| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding | █▁ | 48.698319 | 48.520752 | NA | 48.068438 | 48.07781 | 48.689876 | NA | 49.096196 | 49.039692 | 48.998571 | NA | 49.912084 | 50.007022 | 49.917454 | NA | 49.833141 | 49.848903 | 49.829508 | NA | 49.28428 | 49.165686 | 49.090232 | NA | 49.036332 | 46.611096 | 45.437654 | NA | 45.441983 | 45.421148 | 45.382692 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:WeightedAverageNumberOfSharesOutstandingBasic | █▁ | 48.294952 | 48.096643 | NA | 47.947056 | 47.991283 | 48.689876 | NA | 48.797182 | 48.777732 | 48.712153 | NA | 49.473157 | 49.55192 | 49.420606 | NA | 49.283322 | 49.269786 | 49.109872 | NA | 48.849251 | 48.770948 | 48.756433 | NA | 48.577282 | 46.240869 | 45.000831 | NA | 44.890309 | 44.82337 | 44.742068 | NA | 40698.7 | 39966.869 | 39881.505 | NA | 40081.304 | 40034.649 | 40.025456 | NA | 40.020772 | 40.080402 | 40.070399 | NA | 40.081108 | 40.079714 | 40.089527 |
| us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | NA | NA | NA | 0.534275 | 0.540525 | NA | NA | 0.116376 | 0.118029 | 0.123384 | NA | NA | NA | 0.14187 | NA | 0.150739 | NA | 0.151002 | NA | 0.394863 | NA | 0.660802 | NA | NA | NA | 0.498488 | NA | 0.250911 | NA | 0.258254 | NA | NA | NA | 0.280611 | NA | 0.51085 | 0.521705 | 0.632533 | NA | 0.883294 | 0.765818 | 0.895677 | NA | 1.107949 | 0.68864 | NA | |
| us-gaap:EarningsPerShareBasic | ▅▅█▄▄▁▄▄▄▄▂▄▄▄▆▃▃▃▃▃▃▃▂▂▃▃▂▃▃▂▃▃▃▃▂▃▃▄▂▃▃▃▂▂▂▃ | 1.81 | 1.93 | 3.25 | 1.52 | 1.26 | -0.07 | 1.3600000000000003 | 1.28 | 1.17 | 1.19 | 0.5300000000000002 | 1.17 | 1.12 | 1.15 | 2.2699999999999996 | 0.98 | 0.87 | 0.9 | 0.88 | 0.86 | 0.76 | 0.74 | 0.61 | 0.46 | 0.65 | 0.75 | 0.6 | 0.79 | 0.77 | 0.52 | 0.78 | 0.85 | 0.75 | 0.88 | 0.53 | 0.65 | 0.73 | 1.16 | 0.58 | 0.65 | 0.66 | 0.77 | 0.48 | 0.57 | 0.57 | 0.65 |
| us-gaap:EarningsPerShareDiluted | ▅▅█▄▄▁▄▄▄▄▂▄▃▄▆▃▃▃▃▃▃▃▂▂▃▃▂▃▃▂▃▃▃▃▂▃▃▄▂▃▃▃▂▂▂▃ | 1.79 | 1.91 | 3.2399999999999998 | 1.52 | 1.26 | -0.07 | 1.35 | 1.27 | 1.16 | 1.18 | 0.5300000000000002 | 1.16 | 1.11 | 1.14 | 2.25 | 0.97 | 0.86 | 0.89 | 0.87 | 0.85 | 0.76 | 0.74 | 0.6 | 0.46 | 0.65 | 0.74 | 0.59 | 0.78 | 0.76 | 0.52 | 0.77 | 0.83 | 0.74 | 0.87 | 0.52 | 0.64 | 0.72 | 1.15 | 0.58 | 0.64 | 0.65 | 0.76 | 0.47 | 0.57 | 0.57 | 0.65 |
| us-gaap:IncomeLossFromContinuingOperationsPerBasicShare | NA | NA | 3.2599999999999997e-06 | 1.52e-06 | 1.26e-06 | -7e-08 | 1.3600000000000001e-06 | 1.28e-06 | 1.17e-06 | 1.19e-06 | 5.2e-07 | 1.17e-06 | 1.12e-06 | 1.16e-06 | 9.6e-07 | 9.9e-07 | 9.100000000000001e-07 | 8.5e-07 | 8.900000000000001e-07 | 8.100000000000001e-07 | 7.5e-07 | 7e-07 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare | NA | NA | 3.2400000000000003e-06 | 1.52e-06 | 1.26e-06 | -7e-08 | 1.35e-06 | 1.2700000000000001e-06 | 1.16e-06 | 1.18e-06 | 5.2e-07 | 1.16e-06 | 1.1100000000000002e-06 | 1.15e-06 | 9.499999999999999e-07 | 9.8e-07 | 9.000000000000001e-07 | 8.4e-07 | 8.7e-07 | 8.000000000000001e-07 | 7.4e-07 | 7e-07 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets | NA | NA | 1.21e-05 | NA | NA | NA | 1.233e-07 | NA | NA | NA | 1.289e-07 | NA | NA | NA | 1.2950000000000001e-07 | NA | NA | NA | 1.18e-07 | NA | NA | NA | 1.186e-07 | NA | NA | NA | 1.3289999999999998e-07 | NA | NA | NA | 1.361e-07 | NA | NA | NA | 1.105e-07 | NA | NA | NA | 1.12e-07 | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity umbf:UmbBank | NA | NA | 1.192e-05 | NA | NA | NA | 1.1360000000000001e-07 | NA | NA | NA | 1.165e-07 | NA | NA | NA | 1.119e-07 | NA | NA | NA | 1.073e-07 | NA | NA | NA | 1.063e-07 | NA | NA | NA | 1.168e-07 | NA | NA | NA | 1.173e-07 | NA | NA | NA | 1.0539999999999999e-07 | NA | NA | NA | 1.068e-07 | NA | NA | NA | 1.083e-07 | NA | NA | NA | |
| us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity umbf:UmbFinancialCorporation | NA | NA | 1.21e-05 | NA | NA | NA | 1.233e-07 | NA | NA | NA | 1.289e-07 | NA | NA | NA | 1.2950000000000001e-07 | NA | NA | NA | 1.18e-07 | NA | NA | NA | 1.186e-07 | NA | NA | NA | 1.3289999999999998e-07 | NA | NA | NA | 1.361e-07 | NA | NA | NA | 1.105e-07 | NA | NA | NA | 1.12e-07 | NA | NA | NA | 1.13e-07 | NA | NA | NA | |
| us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity,us-gaap:CapitalUnitsByClass umbf:UmbBank,umbf:CommonEquityTierOneCapital | NA | NA | 1.192e-05 | NA | NA | NA | 1.1360000000000001e-07 | NA | NA | NA | 1.165e-07 | NA | NA | NA | 1.119e-07 | NA | NA | NA | 1.073e-07 | NA | NA | NA | 1.063e-07 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity,us-gaap:CapitalUnitsByClass umbf:UmbFinancialCorporation,umbf:CommonEquityTierOneCapital | NA | NA | 1.21e-05 | NA | NA | NA | 1.233e-07 | NA | NA | NA | 1.289e-07 | NA | NA | NA | 1.2950000000000001e-07 | NA | NA | NA | 1.18e-07 | NA | NA | NA | 1.174e-07 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets us-gaap:CapitalUnitsByClass umbf:CommonEquityTierOneCapital | NA | NA | 1.21e-05 | NA | NA | NA | 1.233e-07 | NA | NA | NA | 1.289e-07 | NA | NA | NA | 1.2950000000000001e-07 | NA | NA | NA | 1.18e-07 | NA | NA | NA | 1.174e-07 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:CapitalToRiskWeightedAssets | NA | NA | 1.4259999999999999e-05 | NA | NA | NA | 1.3259999999999998e-07 | NA | NA | NA | 1.3950000000000002e-07 | NA | NA | NA | 1.4039999999999999e-07 | NA | NA | NA | 1.287e-07 | NA | NA | NA | 1.28e-07 | NA | NA | NA | 1.4039999999999999e-07 | NA | NA | NA | 1.4430000000000001e-07 | NA | NA | NA | 1.192e-07 | NA | NA | NA | 1.22e-07 | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity umbf:UmbBank | NA | NA | 1.2810000000000001e-05 | NA | NA | NA | 1.191e-07 | NA | NA | NA | 1.229e-07 | NA | NA | NA | 1.185e-07 | NA | NA | NA | 1.1360000000000001e-07 | NA | NA | NA | 1.122e-07 | NA | NA | NA | 1.243e-07 | NA | NA | NA | 1.2559999999999999e-07 | NA | NA | NA | 1.1419999999999999e-07 | NA | NA | NA | 1.173e-07 | NA | NA | NA | 1.201e-07 | NA | NA | NA | |
| us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity umbf:UmbFinancialCorporation | NA | NA | 1.4259999999999999e-05 | NA | NA | NA | 1.3259999999999998e-07 | NA | NA | NA | 1.3950000000000002e-07 | NA | NA | NA | 1.4039999999999999e-07 | NA | NA | NA | 1.287e-07 | NA | NA | NA | 1.28e-07 | NA | NA | NA | 1.4039999999999999e-07 | NA | NA | NA | 1.4430000000000001e-07 | NA | NA | NA | 1.192e-07 | NA | NA | NA | 1.22e-07 | NA | NA | NA | 1.245e-07 | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EBT Margin us-gaap:StatementBusinessSegments umbf:CommercialBanking | ▇▄▄▄▁▇▇█▇▇ | 22.763 | 20.192 | 20.724 | 20.689 | 18.023 | 22.339 | 22.781 | 23.431 | 22.952 | 22.336 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| EBT Margin us-gaap:StatementBusinessSegments umbf:InstitutionalBanking | ▇▆▃▃▂█▄▂▁▁ | 58.725 | 56.899 | 51.856 | 52.286 | 49.567 | 60.277 | 53.007 | 51.178 | 48.698 | 49.18 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| EBT Margin us-gaap:StatementBusinessSegments umbf:PersonalBanking | ▁▇▆▅▁▅██▇▅ | 24.172 | 27.297 | 26.609 | 26.448 | 24.336 | 26.45 | 27.831 | 27.92 | 27.292 | 26.073 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
|---|
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:ComprehensiveIncomeNetOfTax | ▇▁█▅▆▇▄▆▇▇▅▄▄▂▅▄▅▄▁▄▅▅▃▄▃▄▄▃▅▄▃▄▁▃▃▄▄▄▄▄▅▃▂▄▄▃ | 141.322 | -56.5 | 175.557 | 87.933 | 125.401 | 132.771 | 53.674 | 95.786 | 137.215 | 135.887 | 85.313 | 31.167 | 43.856 | -15.08 | 89.104 | 49.099 | 63.355 | 57.564 | -57.12 | 29.163 | 60.124 | 72.431 | -0.605 | 51.122 | 1.263 | 49.569 | 36.119 | 20.556 | 64.87 | 42.756 | 17.701 | 40.981 | -55.87 | 12.925 | 5.235 | 46.295 | 46.541 | 29.136 | 27.079 | 48.19 | 61.622 | 25.216 | -22.902 | 29.793 | 46.76 | 22.362 |
| us-gaap:GainLossOnInvestments | █▁ | 15.455 | -8.336 | NA | NA | 4.579 | 3.52 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:IncomeLossFromContinuingOperations | NA | NA | 156.32 | 73.092 | 60.529 | -3.439 | 66.515 | 62.382 | 56.959 | 57.744 | 25.454 | 57.849 | 55.424 | 57.533 | 47.357 | 48.872 | 44.771 | 41.976 | 43.4 | 39.422 | 36.463 | 34.349 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | ▅▅█▄▄▁▄▄▄▄▂▃▄▄▃▃▃▃▃▃▃▃▃▂▃▃▂▃▃ | 107.322 | 109.566 | 191.107 | 83.385 | 68.652 | -4.254 | 77.268 | 72.998 | 67.425 | 68.274 | 24.486 | 65.24 | 66.297 | 67.571 | 63.82 | 61.843 | 56.261 | 57.329 | 53.962 | 53.93 | 50.414 | 48.498 | 39.973 | 31.214 | 39.946 | 48.152 | 36.765 | 48.35 | 48.97 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:IncomeTaxExpenseBenefit | ▆▅█▄▄▃▄▄▄▄▃▄▄▄▅▅▅▅▄▅▅▅▄▄▄▅▄▅▅▄▁▅▄▅▂▄▅▆▄▄▄▅▄▄▄▄ | 19.91 | 16.923 | 34.787 | 10.293 | 8.123 | -0.815 | 10.753 | 10.616 | 10.466 | 10.53 | -0.968 | 7.391 | 10.873 | 10.038 | 16.463 | 12.971 | 11.49 | 13.148 | 11.028 | 11.984 | 13.117 | 12.253 | 10.33 | 8.763 | 9.732 | 14.387 | 9.509 | 12.41 | 13.988 | 8.255 | -12.432 | 13.175 | 10.672 | 13.18 | -6.484 | 10.156 | 12.248 | 18.619 | 6.815 | 10.088 | 10.272 | 12.712 | 8.626 | 7.359 | 9.533 | 10.331 |
| us-gaap:IncomeTaxesPaidNet | █▁▁▃▄▁▁▁▁▁▁▃█▂ | 47.381 | 0.622 | 0.75 | 15.919 | 18.929 | -1.53 | 0.189 | 1.45 | 0.618 | -0.012 | 0.351 | 11.075 | 45.729 | 5.972 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:InsuranceCommissionsAndFees | ▁▅▃▁█▁▇▃▆▃ | 0.245 | 0.42 | 0.318 | 0.259 | 0.533 | 0.259 | 0.511 | 0.32 | 0.465 | 0.338 | NA | NA | NA | 0.301 | 0.388 | 0.425 | 0.513 | 0.646 | 0.833 | 0.698 | 1.16 | 1.497 | 0.894 | 0.48 | 0.586 | 0.57 | 0.765 | 0.911 | 0.732 | 0.603 | 0.661 | 0.869 | 1.236 | 0.961 | 1.146 | 1.028 | 0.913 | 1.009 | 0.968 | 1.038 | 1.165 | 1.204 | 1.025 | 1.554 | 1.287 | 1.699 |
| us-gaap:InterestAndFeeIncomeLoansAndLeases | █▇▇▇▇▇████▇▇▆▆▅▅▅▄▄▄▄▃▃▃▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 154.537 | 150.17 | 152.486 | 142.441 | 140.004 | 151.026 | 156.503 | 162.243 | 161.838 | 157.261 | 154.12 | 143.947 | 135.15 | 126.134 | 122.885 | 119.132 | 112.724 | 106.56 | 102.961 | 98.82 | 93.949 | 90.544 | 88.011 | 84.686 | 71.396 | 64.232 | 64.433 | 61.636 | 60.309 | 58.9 | 59.206 | 59.125 | 56.615 | 54.72 | 54.778 | 54.558 | 54.0 | 54.055 | 54.557 | 55.424 | 55.106 | 53.989 | 55.784 | 56.581 | 55.949 | 53.483 |
| us-gaap:InterestExpense | ▂▂▂▂▃▆▇██▇▇▆▄▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂ | 11.563 | 11.864 | 12.617 | 12.633 | 14.54 | 37.47 | 43.457 | 50.843 | 50.248 | 47.439 | 40.911 | 34.607 | 26.254 | 19.743 | 16.77 | 17.037 | 13.817 | 10.375 | 7.554 | 7.273 | 6.687 | 6.194 | 5.161 | 5.334 | 4.524 | 3.595 | 3.304 | 3.291 | 3.619 | 3.602 | 3.217 | 3.551 | 3.885 | 4.419 | 4.394 | 4.614 | 4.977 | 5.644 | 5.972 | 6.55 | 6.633 | 7.525 | 7.994 | 8.508 | 9.065 | 10.327 |
| us-gaap:InterestIncomeExpenseNet | ███▇▇▆▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 201.071 | 194.115 | 194.675 | 184.384 | 178.229 | 173.941 | 172.363 | 168.26 | 166.414 | 163.868 | 161.808 | 150.49 | 150.226 | 147.922 | 146.346 | 140.858 | 137.394 | 134.315 | 131.456 | 124.765 | 121.21 | 117.892 | 114.454 | 109.895 | 97.36 | 90.358 | 90.914 | 87.526 | 86.17 | 85.445 | 85.914 | 85.545 | 82.327 | 79.483 | 80.229 | 80.365 | 80.373 | 79.089 | 79.533 | 79.074 | 79.918 | 78.448 | 78.788 | 78.383 | 77.668 | 75.774 |
| us-gaap:InterestPaidNet | ▁▂▁▂▂▆▆▇█▅▅▄▃▂▂▂ | 10.051 | 14.337 | 11.02 | 13.501 | 17.45 | 42.134 | 43.638 | 50.433 | 55.987 | 39.524 | 39.097 | 32.165 | 24.733 | 19.168 | 16.575 | 16.612 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:MarketingAndAdvertisingExpense | ▄▁▃▂▂▄█▅▇▄▆▆▅▄▆▄▅▄▆▄▆▃▆▅▆▄▇▅▆▄▇▅▅▃▆▇▅▃▅▄▄▃▅▃▃▃ | 4.797 | 2.345 | 3.717 | 3.038 | 3.284 | 4.64 | 8.385 | 5.655 | 7.304 | 4.913 | 6.483 | 6.671 | 6.184 | 5.034 | 6.54 | 5.056 | 5.732 | 4.503 | 6.256 | 5.332 | 6.313 | 4.441 | 6.816 | 5.766 | 6.53 | 4.618 | 7.182 | 6.057 | 6.307 | 4.602 | 7.189 | 5.536 | 5.705 | 4.272 | 6.989 | 7.368 | 5.986 | 4.26 | 5.958 | 4.912 | 5.158 | 4.122 | 5.787 | 4.426 | 4.43 | 3.705 |
| us-gaap:NetIncomeLoss | ▅▅█▄▄▁▄▄▄▄▂▄▄▄▆▃▃▃▃▃▃▃▂▂▂▃▂▃▃▂▃▃▂▃▂▂▂▃▂▂▂▃▂▂▂▂ | 87.412 | 92.643 | 156.32 | 73.092 | 60.529 | -3.439 | 66.515 | 62.382 | 56.959 | 57.744 | 25.454 | 57.849 | 55.424 | 56.786 | 111.961 | 48.142 | 42.821 | 44.181 | 42.934 | 41.946 | 37.297 | 36.245 | 29.643 | 22.451 | 30.214 | 33.765 | 26.94 | 35.63 | 34.672 | 23.413 | 34.663 | 34.432 | 29.929 | 34.941 | 21.06 | 26.125 | 29.165 | 46.367 | 23.266 | 26.015 | 26.321 | 30.87 | 19.031 | 22.773 | 23.013 | 26.185 |
| us-gaap:OtherComprehensiveIncomeLossNetOfTax | ▆▁▅▅▆█▄▅▇▇▆▄▄▃▄▅▅▅▂▄▅▆▄▅▄▅ | 53.91 | -149.143 | 19.237 | 14.841 | 64.872 | 136.21 | -12.841 | 33.404 | 80.256 | 78.143 | 59.859 | -26.682 | -11.568 | -71.866 | -22.857 | 0.957 | 20.534 | 13.383 | -100.054 | -12.783 | 22.827 | 36.186 | -30.248 | 28.671 | -28.951 | 15.804 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments umbf:BrokerageFees,umbf:CommercialBanking | ▁█▇█▇▇▇▆▇▆ | 0.01 | 0.064 | 0.061 | 0.067 | 0.058 | 0.059 | 0.057 | 0.054 | 0.055 | 0.048 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments umbf:BrokerageFees,umbf:InstitutionalBanking | ▁▂▂▃▄█▇▆▅▆ | 0.673 | 1.319 | 1.888 | 2.775 | 3.822 | 7.59 | 6.731 | 6.052 | 5.026 | 5.422 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments umbf:BrokerageFees,umbf:PersonalBanking | ▃▄▄▄▃█▅▅▅▁ | 1.909 | 1.951 | 1.969 | 1.977 | 1.873 | 2.211 | 2.051 | 1.996 | 1.996 | 1.773 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments umbf:InsuranceFeesAndCommissions,umbf:PersonalBanking | ▁▅▃▁█▁▇▃▆▃ | 0.245 | 0.42 | 0.318 | 0.259 | 0.533 | 0.259 | 0.511 | 0.32 | 0.465 | 0.338 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments umbf:OtherFinancialServices,umbf:CommercialBanking | ▂▃▃▃▁█▄▅▅▆ | 0.196 | 0.231 | 0.238 | 0.24 | 0.161 | 0.4 | 0.277 | 0.288 | 0.292 | 0.339 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments umbf:OtherFinancialServices,umbf:InstitutionalBanking | ▆▆▅▃▃█▃▄▄▁ | 0.411 | 0.404 | 0.394 | 0.363 | 0.37 | 0.438 | 0.371 | 0.377 | 0.381 | 0.339 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments umbf:OtherFinancialServices,umbf:PersonalBanking | ▂▂▁▂▁▄▄▅▇█ | 0.646 | 0.669 | 0.626 | 0.649 | 0.615 | 0.713 | 0.725 | 0.751 | 0.844 | 0.871 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments umbf:TradingAndInvestmentBanking,umbf:InstitutionalBanking | ▄▄▁▂▁█▂▅▂▂ | 0.32 | 0.301 | 0.002 | 0.074 | 0.023 | 0.656 | 0.076 | 0.403 | 0.134 | 0.128 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:CreditCard,umbf:CommercialBanking | ▆▃▄▄▁▇▇█▇▆ | 14.327 | 12.369 | 12.9 | 12.954 | 10.913 | 14.988 | 15.123 | 15.55 | 15.213 | 14.488 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:CreditCard,umbf:InstitutionalBanking | ▅▅▅▅▁▅▇▇▇█ | 4.771 | 4.813 | 4.766 | 4.706 | 3.535 | 4.724 | 5.268 | 5.32 | 5.274 | 5.525 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:CreditCard,umbf:PersonalBanking | █▄▅▄▁▃▆▇▇▄ | 5.775 | 5.107 | 5.243 | 5.213 | 4.677 | 4.99 | 5.533 | 5.617 | 5.646 | 5.115 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:DepositAccount,umbf:CommercialBanking | █▄▄▄▁▁▃▄▄▄ | 8.23 | 7.528 | 7.525 | 7.428 | 6.891 | 6.892 | 7.324 | 7.539 | 7.392 | 7.461 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:DepositAccount,umbf:InstitutionalBanking | ▄▄▁▁▂█▁▁▂▂ | 12.432 | 12.577 | 10.362 | 10.18 | 10.462 | 15.607 | 9.998 | 10.216 | 10.632 | 11.077 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:DepositAccount,umbf:PersonalBanking | ▂▂▄▃▁▆▇█▇▇ | 1.852 | 1.801 | 2.124 | 1.986 | 1.672 | 2.539 | 2.739 | 2.828 | 2.689 | 2.708 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:FiduciaryAndTrust,umbf:InstitutionalBanking | █▇▅▅▃▃▃▂▁▁ | 40.118 | 37.485 | 34.444 | 34.188 | 31.355 | 31.262 | 30.563 | 28.81 | 27.251 | 26.689 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:FiduciaryAndTrust,umbf:PersonalBanking | ▁█▆▆▃▅▆▆▅▄ | 13.745 | 17.349 | 16.329 | 16.364 | 14.966 | 15.738 | 16.272 | 16.408 | 15.652 | 15.268 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments umbf:CommercialBanking | ▇▄▄▄▁▇▇█▇▇ | 22.763 | 20.192 | 20.724 | 20.689 | 18.023 | 22.339 | 22.781 | 23.431 | 22.952 | 22.336 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments umbf:InstitutionalBanking | ▇▆▃▃▂█▄▂▁▁ | 58.725 | 56.899 | 51.856 | 52.286 | 49.567 | 60.277 | 53.007 | 51.178 | 48.698 | 49.18 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments umbf:PersonalBanking | ▁▇▆▅▁▅██▇▅ | 24.172 | 27.297 | 26.609 | 26.448 | 24.336 | 26.45 | 27.831 | 27.92 | 27.292 | 26.073 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
|---|
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:Assets | █▇▇▆▆▅▅▄▄▄▄▄▃▄▄▃▃▃▃▃▃▃▃▃▃▂▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁ | 36619.015 | 34669.389 | 33127.504 | 30250.972 | 29753.608 | 26244.886 | 26561.355 | 24143.092 | 24016.276 | 23556.76 | 23351.119 | 21462.36 | 20531.47 | 20987.904 | 21771.583 | 20279.503 | 20353.599 | 20576.137 | 20682.532 | 19726.146 | 19734.076 | 19302.913 | 19094.245 | 18597.965 | 18418.727 | 16730.123 | 17500.96 | 16284.028 | 15562.69 | 15945.83 | 16911.852 | 16184.233 | 15253.217 | 15705.47 | 14927.196 | 13285.845 | 13182.662 | 13641.157 | 13541.398 | 12139.084 | 12770.576 | 13352.32 | 12404.932 | NA | NA | NA |
| us-gaap:Liabilities | █▇▇▆▆▅▅▄▄▄▄▄▃▃▄▃▃▃▃▃▃▃▃▃▃▂▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁ | 33528.771 | 31711.15 | 30110.556 | 27396.792 | 26976.213 | 23581.445 | 23954.915 | 21579.226 | 21538.486 | 21205.917 | 21122.649 | 19258.896 | 18329.658 | 18820.518 | 19590.052 | 18177.96 | 18282.48 | 18565.259 | 18720.148 | 17701.518 | 17731.344 | 17354.954 | 17200.551 | 16697.108 | 16561.671 | 15047.747 | 15857.202 | 14668.679 | 13961.348 | 14403.632 | 15405.787 | 14720.578 | 14026.745 | 14419.912 | 13647.851 | 11991.67 | 11930.664 | 12428.486 | 12350.266 | 10968.785 | 11637.62 | 12273.331 | 11344.072 | NA | NA | NA |
| us-gaap:LiabilitiesAndStockholdersEquity | █▇▇▆▆▅▅▄▄▄▄▄▃▄▄▃▃▃▃▃▃▃▃▃▃▂▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁ | 36619.015 | 34669.389 | 33127.504 | 30250.972 | 29753.608 | 26244.886 | 26561.355 | 24143.092 | 24016.276 | 23556.76 | 23351.119 | 21462.36 | 20531.47 | 20987.904 | 21771.583 | 20279.503 | 20353.599 | 20576.137 | 20682.532 | 19726.146 | 19734.076 | 19302.913 | 19094.245 | 18597.965 | 18418.727 | 16730.123 | 17500.96 | 16284.028 | 15562.69 | 15945.83 | 16911.852 | 16184.233 | 15253.217 | 15705.47 | 14927.196 | 13285.845 | 13182.662 | 13641.157 | 13541.398 | 12139.084 | 12770.576 | 13352.32 | 12404.932 | NA | NA | NA |
| us-gaap:StockholdersEquity | ███▇▇▇▆▆▆▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁ | 3090.244 | 2958.239 | 3016.948 | 2854.18 | 2777.395 | 2663.441 | 2606.44 | 2563.866 | 2477.79 | 2350.843 | 2228.47 | 2203.464 | 2201.812 | 2167.386 | 2181.531 | 2101.543 | 2071.119 | 2010.878 | 1962.384 | 2024.628 | 2002.732 | 1947.959 | 1893.694 | 1900.857 | 1857.056 | 1682.376 | 1643.758 | 1615.349 | 1601.342 | 1542.198 | 1506.065 | 1463.655 | 1226.472 | 1285.558 | 1279.345 | 1294.175 | 1251.998 | 1212.671 | 1191.132 | 1170.299 | 1132.956 | 1078.989 | 1060.86 | 1090.18 | 1068.498 | 1029.451 |
| us-gaap:TierOneRiskBasedCapital dei:LegalEntity umbf:UmbBank | NA | NA | 2492.571 | NA | NA | NA | 2128.608 | NA | NA | NA | 1921.615 | NA | NA | NA | 1750.297 | NA | NA | NA | 1613.024 | NA | NA | NA | 1491.833 | NA | NA | NA | 1209.096 | NA | NA | NA | 1095.446 | NA | NA | NA | 875.645 | NA | NA | NA | 643.972 | NA | NA | NA | 595.432 | NA | NA | NA | |
| us-gaap:TierOneRiskBasedCapital dei:LegalEntity umbf:UmbFinancialCorporation | NA | NA | 2547.634 | NA | NA | NA | 2330.533 | NA | NA | NA | 2142.469 | NA | NA | NA | 2041.504 | NA | NA | NA | 1789.581 | NA | NA | NA | 1681.222 | NA | NA | NA | 1393.389 | NA | NA | NA | 1285.1 | NA | NA | NA | 926.465 | NA | NA | NA | 823.187 | NA | NA | NA | 738.763 | NA | NA | NA | |
| us-gaap:TierOneRiskBasedCapital dei:LegalEntity,us-gaap:CapitalUnitsByClass umbf:UmbBank,umbf:CommonEquityTierOneCapital | NA | NA | 2492.571 | NA | NA | NA | 2128.608 | NA | NA | NA | 1921.615 | NA | NA | NA | 1750.297 | NA | NA | NA | 1613.024 | NA | NA | NA | 1491.833 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:TierOneRiskBasedCapital dei:LegalEntity,us-gaap:CapitalUnitsByClass umbf:UmbFinancialCorporation,umbf:CommonEquityTierOneCapital | NA | NA | 2547.634 | NA | NA | NA | 2330.533 | NA | NA | NA | 2142.469 | NA | NA | NA | 2041.504 | NA | NA | NA | 1789.581 | NA | NA | NA | 1664.815 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:Cash us-gaap:ConsolidatedEntities srt:ParentCompany | NA | NA | 172.745 | NA | NA | NA | 143.193 | NA | NA | NA | 165.771 | NA | NA | NA | 260.621 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:CashAndCashEquivalentsAtCarryingValue | █▆▅▃▃▂▃▁▂▂▃▂▁▂▃▁▁▁▂▁▁▁▁▂▂▂▃▂▁▂▄▃▂▃▂▁▁▂▂▁▃▃▂▁▁▁ | 5451.606 | 4193.532 | 3497.566 | 2019.238 | 2148.598 | 1419.254 | 1669.17 | 792.958 | 1275.62 | 1490.158 | 1674.121 | 984.693 | 472.423 | 929.454 | 1716.262 | 548.216 | 661.55 | 696.63 | 1063.967 | 710.594 | 625.849 | 599.118 | 819.112 | 1030.8 | 1011.856 | 1034.872 | 1787.23 | 1220.22 | 783.519 | 1278.903 | 2582.428 | 1940.182 | 999.172 | 1927.814 | 1366.394 | 541.474 | 641.459 | 1327.186 | 1459.631 | 571.2 | 1585.849 | 2179.956 | 1033.617 | 800.425 | 757.641 | 740.302 |
| us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents | █▆▅▃▃▂▂▁▂▂▂▁ | 5451.606 | 4193.532 | 3497.566 | 2019.238 | 2148.598 | 1419.254 | 1669.17 | 792.958 | 1275.62 | 1490.158 | 1674.121 | 984.693 | NA | NA | 1716.262 | NA | NA | NA | 1063.967 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:Land | NA | NA | 42.323 | NA | NA | NA | 42.987 | NA | NA | NA | 44.58 | NA | NA | NA | 46.415 | NA | NA | NA | 45.634 | NA | NA | NA | 46.43 | NA | NA | NA | 43.798 | NA | NA | NA | 44.731 | NA | NA | NA | 45.578 | NA | NA | NA | 44.855 | NA | NA | NA | 45.036 | NA | NA | NA | |
| us-gaap:MachineryAndEquipmentGross | NA | NA | 176.018 | NA | NA | NA | 164.029 | NA | NA | NA | 159.717 | NA | NA | NA | 148.425 | NA | NA | NA | 150.955 | NA | NA | NA | 138.127 | NA | NA | NA | 120.745 | NA | NA | NA | 124.992 | NA | NA | NA | 121.979 | NA | NA | NA | 105.244 | NA | NA | NA | 110.739 | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:PropertyPlantAndEquipmentGross | NA | NA | 834.549 | NA | NA | NA | 803.622 | NA | NA | NA | 758.441 | NA | NA | NA | 709.493 | NA | NA | NA | 700.626 | NA | NA | NA | 659.392 | NA | NA | NA | 598.495 | NA | NA | NA | 591.872 | NA | NA | NA | 567.988 | NA | NA | NA | 530.989 | NA | NA | NA | 526.16 | NA | NA | NA | |
| us-gaap:AmortizationOfIntangibleAssets | ▁▂▂▂▂▂▂▁▁▁▁▂▂▂▂▂▃▅▅▅▆▆▆▆▄▅▅▅▅▆▆▆▆▆▇▇▇▇▇███▆▆▄▃ | 1.157 | 1.38 | 1.601 | 1.524 | 1.658 | 1.734 | 1.593 | 1.335 | 1.251 | 1.327 | 1.332 | 1.385 | 1.485 | 1.562 | 1.641 | 1.715 | 1.924 | 2.869 | 2.928 | 2.992 | 3.145 | 3.226 | 3.283 | 3.483 | 2.569 | 2.755 | 2.974 | 3.043 | 3.074 | 3.102 | 3.164 | 3.245 | 3.354 | 3.456 | 3.547 | 3.643 | 3.733 | 3.852 | 3.913 | 4.022 | 4.159 | 4.006 | 3.458 | 3.15 | 2.442 | 2.091 |
| us-gaap:PropertyPlantAndEquipmentNet | ▆▇▇████▇▆▆▇▆▆▆▆▆▆▆▇▇▆▆▆▆▆▅▄▄▄▃▄▃▃▃▃▃▂▂▂▂▁▁▁ | 281.011 | 286.068 | 293.095 | 295.09 | 300.174 | 297.668 | 300.334 | 290.273 | 278.725 | 279.0 | 283.879 | 277.123 | 274.408 | 272.632 | 275.942 | 277.454 | 276.412 | 282.398 | 289.007 | 287.267 | 277.06 | 279.079 | 281.471 | 281.704 | 279.996 | 263.542 | 257.835 | 257.341 | 250.655 | 247.77 | 249.689 | 247.827 | 246.3 | 244.678 | 244.6 | 239.234 | 234.754 | 227.91 | 227.936 | 225.593 | 220.499 | 219.438 | 219.727 | NA | NA | NA |
| us-gaap:Goodwill | ▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂████████▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆ | 174.518 | 174.518 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 180.867 | 228.396 | 228.396 | 228.396 | 228.396 | 228.396 | 228.346 | 227.962 | 228.217 | 209.758 | 209.758 | 209.758 | 209.758 | 209.758 | 209.758 | 209.758 | 209.758 | 209.758 | 209.758 | 209.758 | 211.114 | 211.114 | 211.114 | 211.114 | 211.114 | 211.114 | 211.114 | NA | NA | NA |
| us-gaap:FiniteLivedIntangibleAssetsNet | ▁▁▂▂▂▂▂▁▁▁▁▁▁▂▂▂▂▃▃▃▃▄▄▄▅▄▄▄▄▅▅▅▅▆▆▆▇▇▇██ | 16.636 | 17.793 | 21.056 | 22.657 | 24.181 | 25.839 | 27.597 | 17.19 | 12.425 | 13.676 | 15.003 | 16.335 | 17.21 | 18.695 | 20.257 | 23.477 | 24.614 | 31.622 | 34.491 | 37.419 | 40.411 | 43.556 | 46.782 | 50.065 | 53.649 | 41.236 | 43.991 | 46.966 | 49.888 | 52.483 | 55.585 | 58.749 | 61.994 | 65.348 | 68.803 | 72.351 | 76.604 | 80.337 | 84.331 | 88.243 | 92.132 | NA | 92.297 | NA | NA | NA |
| us-gaap:OperatingLeaseRightOfUseAsset | NA | NA | 63.4 | NA | NA | NA | 66.8 | 68.5 | 65.1 | 64.3 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
|---|
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:LongTermDebt | ████▃▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁ | 270.558 | 270.074 | 269.595 | 269.044 | 70.996 | 121.582 | 97.49 | 86.951 | 88.569 | 81.608 | 82.671 | 78.523 | 78.692 | 78.687 | 79.281 | 76.071 | 76.083 | 76.104 | 76.772 | 75.418 | 85.32 | 85.238 | 86.07 | 83.534 | 88.346 | 7.6 | 8.81 | 7.067 | 5.745 | 5.815 | 5.055 | 5.13 | 4.063 | 4.393 | 5.879 | 5.632 | 5.26 | 5.423 | 6.529 | 7.841 | 7.545 | 7.718 | 8.884 | NA | NA | NA |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo | NA | NA | 11.647 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree | NA | NA | 9.796 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour | NA | NA | 8.715 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive | NA | NA | 7.806 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive | NA | NA | 30.457 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:StockholdersEquity | ███▇▇▇▆▆▆▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁ | 3090.244 | 2958.239 | 3016.948 | 2854.18 | 2777.395 | 2663.441 | 2606.44 | 2563.866 | 2477.79 | 2350.843 | 2228.47 | 2203.464 | 2201.812 | 2167.386 | 2181.531 | 2101.543 | 2071.119 | 2010.878 | 1962.384 | 2024.628 | 2002.732 | 1947.959 | 1893.694 | 1900.857 | 1857.056 | 1682.376 | 1643.758 | 1615.349 | 1601.342 | 1542.198 | 1506.065 | 1463.655 | 1226.472 | 1285.558 | 1279.345 | 1294.175 | 1251.998 | 1212.671 | 1191.132 | 1170.299 | 1132.956 | 1078.989 | 1060.86 | 1090.18 | 1068.498 | 1029.451 |
| us-gaap:AdditionalPaidInCapitalCommonStock | ████▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▅▅▅▅▅▁▁ | 1098.139 | 1093.667 | 1090.45 | 1085.375 | 1081.713 | 1073.089 | 1073.764 | 1069.51 | 1065.301 | 1060.63 | 1054.601 | 1054.801 | 1050.66 | 1046.673 | 1046.095 | 1042.022 | 1037.898 | 1033.225 | 1033.419 | 1028.869 | 1023.195 | 1017.42 | 1019.889 | 1015.383 | 1009.965 | 892.658 | 894.602 | NA | NA | NA | 882.407 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:RetainedEarningsAccumulatedDeficit | ██▇▇▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁ | 2040.134 | 1968.318 | 1891.246 | 1750.389 | 1692.289 | 1646.751 | 1672.438 | 1621.198 | 1573.586 | 1531.396 | 1488.421 | 1477.732 | 1434.342 | 1393.485 | 1338.11 | 1239.865 | 1204.436 | 1174.587 | 1142.887 | 1112.613 | 1083.28 | 1058.131 | 1033.99 | 1016.206 | 1005.563 | 986.923 | 963.911 | 947.664 | 922.268 | 897.826 | 884.63 | 860.138 | 834.445 | 813.245 | 787.015 | 774.641 | 756.835 | 735.978 | 697.923 | 682.942 | 664.805 | 646.383 | 623.415 | NA | NA | NA |
| us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax | ▇▆██▇▇▅▅▄▃▂▁▁▂▃▃▃▃▂▄▄▄▃▄▃▄▃▃▄▃▃▃▃▄▅▅▄▄▄▄▄▄▄ | 223.107 | 169.197 | 318.34 | 299.103 | 284.262 | 219.39 | 83.18 | 96.021 | 62.617 | -17.639 | -95.782 | -155.641 | -128.959 | -117.391 | -45.525 | -22.668 | -23.625 | -44.159 | -57.542 | 42.512 | 55.295 | 32.468 | -3.718 | 26.53 | -2.141 | 26.81 | 11.006 | 1.827 | 16.901 | -13.297 | -32.64 | -15.678 | -22.227 | 63.572 | 85.588 | 101.413 | 81.244 | 63.868 | 81.099 | 77.286 | 55.111 | 19.811 | 25.465 | NA | NA | NA |
| us-gaap:TreasuryStockValue | ▆▆▆▆▆▆▄▄▄▄▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▄▄▄▄▄▄▅███▇█▇▇▇▇▇▇ | 326.193 | 328.0 | 338.145 | 335.744 | 335.926 | 330.846 | 277.999 | 277.92 | 278.771 | 278.601 | 273.827 | 228.485 | 209.288 | 210.438 | 212.206 | 212.733 | 202.647 | 207.832 | 211.437 | 214.423 | 214.095 | 215.117 | 211.524 | 212.319 | 211.388 | 279.072 | 280.818 | 280.552 | 279.97 | 280.583 | 283.389 | 298.015 | 377.259 | 378.525 | 380.384 | 367.21 | 367.846 | 365.209 | 366.246 | 366.497 | 362.007 | 360.42 | 361.383 | NA | NA | NA |
| us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | ▇██▆▅▄▅▆▆▅▃▅▄▃▅▅▅▄▅▅▄▃▁▅▅▄▂▄▄▃▂▃▃▂▁▂▂▂▂▂▂▂▂▂▁▁ | 4.152 | 4.457 | 4.678 | 3.725 | 3.292 | 2.817 | 3.316 | 3.912 | 3.717 | 3.289 | 2.11 | 3.268 | 2.931 | 2.27 | 3.268 | 3.333 | 3.382 | 2.861 | 3.053 | 3.053 | 2.853 | 2.347 | 1.262 | 3.251 | 3.17 | 2.609 | 1.948 | 2.491 | 2.521 | 2.212 | 1.617 | 2.223 | 2.183 | 1.913 | 1.492 | 1.86 | 1.853 | 1.712 | 1.546 | 1.702 | 1.709 | 1.553 | 1.555 | 1.516 | 1.472 | 1.41 |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInOperatingActivities | ▃▆█▆▅▁█▃▅▃▄▆▄▁▄▆▅▁▇▅ | 61.317 | 115.94 | 157.965 | 113.948 | 92.327 | 9.358 | 150.915 | 56.545 | 87.76 | 46.205 | 73.011 | 125.271 | 79.196 | 19.619 | 82.236 | 125.043 | 102.579 | 16.668 | 126.673 | 87.283 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 102.084 | 71.192 | 86.577 | 35.345 | 46.685 | 81.948 | 84.96 | 10.151 | 80.161 | 14.151 | 47.082 | 71.649 | 41.093 | 46.076 | 46.88 | 45.945 |
| us-gaap:NetCashProvidedByUsedInInvestingActivities | ▆▅▄▆▁█▃▆▆▇▅▆▇▇▇▇█▇▆█ | -581.141 | -1086.59 | -1347.192 | -670.012 | -2705.006 | 231.123 | -1670.01 | -514.968 | -544.92 | -270.531 | -1210.273 | -457.246 | -3.019 | -79.755 | -332.049 | -89.508 | 171.412 | -228.433 | -794.391 | 61.199 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | -110.176 | -6.196 | -667.244 | -237.232 | -839.835 | -208.281 | -241.16 | -252.255 | -548.971 | -331.177 | 8.859 | 148.917 | -886.234 | -205.345 | -301.659 | 414.021 |
| us-gaap:NetCashProvidedByUsedInFinancingActivities | ▅▅▇▃█▁▆▂▃▂▅▄▁▁▅▂▂▂▄▂ | 1777.898 | 1666.616 | 2667.555 | 426.704 | 3342.023 | -490.397 | 2395.307 | -24.239 | 242.622 | 40.363 | 1826.69 | 844.245 | -533.208 | -726.672 | 1417.859 | -148.869 | -309.071 | -155.572 | 1021.091 | -63.737 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 650.338 | 876.014 | -347.975 | 763.307 | 1618.07 | 26.348 | -529.527 | 109.659 | 1357.241 | -697.623 | -650.048 | 925.773 | 1078.333 | 202.053 | 272.118 | -949.309 |
| us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect | ▇▅█▂▅▂▆▁▂▂▅ | 1258.074 | 695.966 | 1478.328 | -129.36 | 729.344 | -249.916 | 876.212 | -482.662 | -214.538 | -183.963 | 689.428 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:AmortizationOfFinancingCosts | ▁█▁ | 0.112 | 0.113 | 0.112 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:DeferredIncomeTaxExpenseBenefit | ▁█ | -9.421 | 10.246 | NA | NA | -5.856 | -11.134 | NA | NA | NA | NA | NA | NA | NA | NA | 58.186 | 3.292 | -1.415 | -0.322 | 1.845 | -1.754 | 4.082 | -1.417 | 1.428 | -3.699 | -1.054 | -1.523 | -5.547 | -1.548 | -1.539 | -2.822 | 0.169 | -2.489 | -0.212 | -2.591 | 2.266 | 0.533 | 2.198 | -1.322 | 3.543 | -1.282 | -2.104 | -0.354 | -3.877 | -3.387 | -2.875 | -3.087 |
| us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet | █▁▄▅▆█▄▇▆▆▆▄▄▄▃▄▅▅▄▅▅▄▅▅▄▅▅▄▄▆▄▄▅▄▅▅▄▅▄▅▅▄▄▄▄▅ | 82.06 | -78.096 | 0.919 | 17.33 | 30.834 | 79.008 | -7.366 | 56.473 | 26.748 | 36.453 | 44.12 | -15.666 | -1.247 | -8.345 | -37.552 | -7.304 | 14.107 | 5.533 | -18.508 | 5.184 | 11.307 | -2.025 | 19.473 | 15.229 | -16.481 | 3.834 | 15.932 | -10.508 | -11.043 | 25.719 | -2.586 | 0.371 | 24.428 | -11.79 | 2.491 | 4.199 | -4.963 | 19.069 | -10.915 | 18.195 | 9.36 | -16.385 | -12.834 | -2.883 | -4.17 | 5.423 |
| us-gaap:NetCashProvidedByUsedInOperatingActivities | ▃▆█▆▅▁█▃▅▃▄▆▄▁▄▆▅▁▇▅ | 61.317 | 115.94 | 157.965 | 113.948 | 92.327 | 9.358 | 150.915 | 56.545 | 87.76 | 46.205 | 73.011 | 125.271 | 79.196 | 19.619 | 82.236 | 125.043 | 102.579 | 16.668 | 126.673 | 87.283 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 102.084 | 71.192 | 86.577 | 35.345 | 46.685 | 81.948 | 84.96 | 10.151 | 80.161 | 14.151 | 47.082 | 71.649 | 41.093 | 46.076 | 46.88 | 45.945 |
| us-gaap:NetIncomeLoss | ▅▅█▄▄▁▄▄▄▄▂▄▄▄▆▃▃▃▃▃▃▃▂▂▂▃▂▃▃▂▃▃▂▃▂▂▂▃▂▂▂▃▂▂▂▂ | 87.412 | 92.643 | 156.32 | 73.092 | 60.529 | -3.439 | 66.515 | 62.382 | 56.959 | 57.744 | 25.454 | 57.849 | 55.424 | 56.786 | 111.961 | 48.142 | 42.821 | 44.181 | 42.934 | 41.946 | 37.297 | 36.245 | 29.643 | 22.451 | 30.214 | 33.765 | 26.94 | 35.63 | 34.672 | 23.413 | 34.663 | 34.432 | 29.929 | 34.941 | 21.06 | 26.125 | 29.165 | 46.367 | 23.266 | 26.015 | 26.321 | 30.87 | 19.031 | 22.773 | 23.013 | 26.185 |
| us-gaap:ShareBasedCompensation | ▆█▇▅▅▅▅▆▅▆▃▅▄▄▅▅▅▅▄▄▄▄▁▅▄▄▂▄▃▃▂▃▃▂▁▂▂▂▂▂▂▂▂▁▁▁ | 4.152 | 5.152 | 4.678 | 3.74 | 3.292 | 3.41 | 3.316 | 3.924 | 3.717 | 3.893 | 2.11 | 3.269 | 2.93 | 2.765 | 3.269 | 3.332 | 3.383 | 3.332 | 3.053 | 3.052 | 2.854 | 2.776 | 1.262 | 3.25 | 3.17 | 3.069 | 1.947 | 2.981 | 2.521 | 2.212 | 1.617 | 2.223 | 2.183 | 1.913 | 1.492 | 1.86 | 1.853 | 1.712 | 1.546 | 1.702 | 1.709 | 1.553 | 1.555 | 1.516 | 1.472 | 1.41 |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInInvestingActivities | ▆▅▄▆▁█▃▆▆▇▅▆▇▇▇▇█▇▆█ | -581.141 | -1086.59 | -1347.192 | -670.012 | -2705.006 | 231.123 | -1670.01 | -514.968 | -544.92 | -270.531 | -1210.273 | -457.246 | -3.019 | -79.755 | -332.049 | -89.508 | 171.412 | -228.433 | -794.391 | 61.199 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | -110.176 | -6.196 | -667.244 | -237.232 | -839.835 | -208.281 | -241.16 | -252.255 | -548.971 | -331.177 | 8.859 | 148.917 | -886.234 | -205.345 | -301.659 | 414.021 |
| us-gaap:PaymentsToAcquirePropertyPlantAndEquipment | ▃▂▄▄▆▆██▄▃▇▅▄▃▄▄▂▂▄▇▃▃▄▄▅▅▃▅▄▂▄▃▃▃▄▄▄▂▃▄▃▂▄▃▂▁ | 9.433 | 5.958 | 13.453 | 11.402 | 17.709 | 17.652 | 24.584 | 24.902 | 12.761 | 10.066 | 21.209 | 14.579 | 13.513 | 8.639 | 11.699 | 13.425 | 6.338 | 4.985 | 11.891 | 21.424 | 9.027 | 8.499 | 11.66 | 12.621 | 14.625 | 14.854 | 9.571 | 15.958 | 12.335 | 6.926 | 11.316 | 9.608 | 9.378 | 8.011 | 12.522 | 11.213 | 13.423 | 6.88 | 8.777 | 11.57 | 8.023 | 7.187 | 12.837 | 9.261 | 7.398 | 3.096 |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| us-gaap:NetCashProvidedByUsedInFinancingActivities | ▅▅▇▃█▁▆▂▃▂▅▄▁▁▅▂▂▂▄▂ | 1777.898 | 1666.616 | 2667.555 | 426.704 | 3342.023 | -490.397 | 2395.307 | -24.239 | 242.622 | 40.363 | 1826.69 | 844.245 | -533.208 | -726.672 | 1417.859 | -148.869 | -309.071 | -155.572 | 1021.091 | -63.737 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 650.338 | 876.014 | -347.975 | 763.307 | 1618.07 | 26.348 | -529.527 | 109.659 | 1357.241 | -697.623 | -650.048 | 925.773 | 1078.333 | 202.053 | 272.118 | -949.309 |
| us-gaap:ProceedsFromIssuanceOfLongTermDebt | NA | NA | 0.0 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | 2.0 | NA | NA | NA | 0.0 | NA | NA | NA | 0.5 | NA | NA | NA | 0.0 | NA | NA | NA | NA | NA | NA | NA | |
| us-gaap:PaymentsOfDividends | ███▇▇██▇▇▇▇▇▇▇▆▆▆▆▆▅▅▅▅▅▅▄▄▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁ | 15.479 | 15.456 | 15.356 | 14.885 | 14.89 | 15.15 | 15.217 | 14.722 | 14.72 | 14.777 | 14.75 | 14.467 | 14.531 | 14.531 | 13.705 | 12.715 | 12.746 | 12.71 | 12.653 | 12.142 | 12.161 | 12.082 | 11.863 | 11.809 | 11.579 | 10.716 | 10.685 | 10.246 | 10.232 | 10.201 | 10.166 | 8.747 | 8.729 | 8.526 | 8.841 | 8.32 | 8.324 | 8.302 | 8.273 | 7.874 | 7.903 | 7.751 | 7.882 | 7.485 | 7.484 | 7.477 |
| us-gaap:Dividends | ███▇▇▇█▇▇▇▇▇▇▇▆▄▅▄▄▃▃▃▃▃▃▂▂▁ | 15.596 | 15.571 | 15.463 | 14.992 | 14.991 | 15.209 | 15.275 | 14.77 | 14.769 | 14.769 | 14.765 | 14.459 | 14.567 | 14.473 | 13.716 | 12.713 | 12.972 | 12.481 | 12.66 | 12.136 | 12.148 | 12.104 | 11.859 | 11.808 | 11.574 | 10.753 | 10.693 | 10.234 | NA | NA | 10.171 | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| us-gaap:PaymentsForRepurchaseOfCommonStock | ▁▁▁▁▁█▁▁▁▁▇▃▁▂▁▂▁▁▁▁▁▃▁▁▁▂▁▁▁▁▁▁▁▁▃▁▁▁▁▂▁▁▁▁▁▁ | 0.061 | 4.027 | 4.201 | 0.106 | 0.073 | 59.386 | 0.161 | 0.221 | 0.028 | 4.086 | 50.09 | 20.206 | 0.26 | 5.951 | 0.907 | 10.09 | 0.251 | 4.028 | 2.178 | 0.608 | 0.701 | 12.88 | 2.284 | 0.794 | 0.07 | 5.309 | 1.883 | 0.693 | 0.298 | 2.867 | 0.95 | 0.801 | 0.094 | 1.656 | 14.357 | 0.778 | 2.618 | 2.666 | 0.707 | 5.053 | 2.009 | 1.373 | 1.325 | 2.343 | 2.25 | 2.961 |
| 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
|---|
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 |
| Value | 48 | 48 | 48 | 48 | 48 | 49 | 49 | 48 | 49 | 50 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 46 | 45 | 45 | 45 | 45 |
| Percentage of WeightedAverageNumberOfDilutedSharesOutstanding | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 48 | 48 | 47 | 47 | 48 | 48 | 48 | 48 | 49 | 49 | 49 | 49 | 49 | 49 | 48 | 48 | 48 | 48 | 46 | 45 | 44 | 44 | 44 | 40698 | 39966 | 39881 | 40081 | 40034 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
| Percentage of WeightedAverageNumberOfSharesOutstandingBasic | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-03-31 | 2017-09-30 | 2017-03-31 | 2016-09-30 | 2016-03-31 | 2015-03-31 | 2014-09-30 | 2014-03-31 | 2013-03-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-09-30 | 2010-06-30 |
| Value | 534280.0 | 540520.0 | 116380.0 | 118030.0 | 123380.0 | 141870.0 | 150740.0 | 151000.0 | 394860.0 | 660800.0 | 498490.0 | 250910.0 | 258250.0 | 280610.0 | 510850.0 | 521700.0 | 632530.0 | 883290.0 | 765820.0 | 895680.0 | 1107900.0 | 688640.0 |
| Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 1.81 | 1.93 | 3.25 | 1.52 | 1.26 | -0.07 | 1.36 | 1.28 | 1.17 | 1.19 | 0.53 | 1.17 | 1.12 | 1.15 | 2.27 | 0.98 | 0.87 | 0.9 | 0.88 | 0.86 | 0.76 | 0.74 | 0.61 | 0.46 | 0.65 | 0.75 | 0.6 | 0.79 | 0.77 | 0.52 | 0.78 | 0.85 | 0.75 | 0.88 | 0.53 | 0.65 | 0.73 | 1.16 | 0.58 | 0.65 | 0.66 | 0.77 | 0.48 | 0.57 | 0.57 | 0.65 |
| Percentage of EarningsPerShareBasic | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 1.79 | 1.91 | 3.24 | 1.52 | 1.26 | -0.07 | 1.35 | 1.27 | 1.16 | 1.18 | 0.53 | 1.16 | 1.11 | 1.14 | 2.25 | 0.97 | 0.86 | 0.89 | 0.87 | 0.85 | 0.76 | 0.74 | 0.6 | 0.46 | 0.65 | 0.74 | 0.59 | 0.78 | 0.76 | 0.52 | 0.77 | 0.83 | 0.74 | 0.87 | 0.52 | 0.64 | 0.72 | 1.15 | 0.58 | 0.64 | 0.65 | 0.76 | 0.47 | 0.57 | 0.57 | 0.65 |
| Percentage of EarningsPerShareDiluted | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 |
| Value | 3.26 | 1.52 | 1.26 | -0.07 | 1.36 | 1.28 | 1.17 | 1.19 | 0.52 | 1.17 | 1.12 | 1.16 | 0.96 | 0.99 | 0.91 | 0.85 | 0.89 | 0.81 | 0.75 | 0.7 |
| Percentage of IncomeLossFromContinuingOperationsPerBasicShare | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 |
| Value | 3.24 | 1.52 | 1.26 | -0.07 | 1.35 | 1.27 | 1.16 | 1.18 | 0.52 | 1.16 | 1.11 | 1.15 | 0.95 | 0.98 | 0.9 | 0.84 | 0.87 | 0.8 | 0.74 | 0.7 |
| Percentage of IncomeLossFromContinuingOperationsPerDilutedShare | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 |
| Value | 12.1 | 0.1233 | 0.1289 | 0.1295 | 0.118 | 0.1186 | 0.1329 | 0.1361 | 0.1105 | 0.112 |
| Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 11.92 | 0.1136 | 0.1165 | 0.1119 | 0.1073 | 0.1063 | 0.1168 | 0.1173 | 0.1054 | 0.1068 | 0.1083 |
| Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets | 98.5 | 92.1 | 90.4 | 86.4 | 90.9 | 89.6 | 87.9 | 86.2 | 95.4 | 95.4 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 12.1 | 0.1233 | 0.1289 | 0.1295 | 0.118 | 0.1186 | 0.1329 | 0.1361 | 0.1105 | 0.112 | 0.113 |
| Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 11.92 | 0.1136 | 0.1165 | 0.1119 | 0.1073 | 0.1063 |
| Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets | 98.5 | 92.1 | 90.4 | 86.4 | 90.9 | 89.6 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 12.1 | 0.1233 | 0.1289 | 0.1295 | 0.118 | 0.1174 |
| Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 99.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 12.1 | 0.1233 | 0.1289 | 0.1295 | 0.118 | 0.1174 |
| Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 99.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 |
| Value | 14.26 | 0.1326 | 0.1395 | 0.1404 | 0.1287 | 0.128 | 0.1404 | 0.1443 | 0.1192 | 0.122 |
| Percentage of CapitalToRiskWeightedAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 12.81 | 0.1191 | 0.1229 | 0.1185 | 0.1136 | 0.1122 | 0.1243 | 0.1256 | 0.1142 | 0.1173 | 0.1201 |
| Percentage of CapitalToRiskWeightedAssets | 89.8 | 89.8 | 88.1 | 84.4 | 88.3 | 87.7 | 88.5 | 87.0 | 95.8 | 96.1 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 14.26 | 0.1326 | 0.1395 | 0.1404 | 0.1287 | 0.128 | 0.1404 | 0.1443 | 0.1192 | 0.122 | 0.1245 |
| Percentage of CapitalToRiskWeightedAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 141 | -56.5 | 175 | 87 | 125 | 132 | 53 | 95 | 137 | 135 | 85 | 31 | 43 | -15.08 | 89 | 49 | 63 | 57 | -57.12 | 29 | 60 | 72 | -0.605 | 51 | 1.263 | 49 | 36 | 20 | 64 | 42 | 17 | 40 | -55.87 | 12 | 5.235 | 46 | 46 | 29 | 27 | 48 | 61 | 25 | -22.902 | 29 | 46 | 22 |
| Percentage of ComprehensiveIncomeNetOfTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 66.5 | -27.4 | 84.7 | 44.6 | 65.1 | 62.8 | 24.9 | 43.7 | 63.3 | 64.3 | 42.1 | 16.8 | 24.9 | -9.0 | 54.6 | 31.1 | 41.9 | 39.8 | -41.1 | 22.1 | 47.0 | 58.4 | -0.5 | 44.4 | 1.2 | 52.8 | 38.3 | 22.6 | 72.2 | 48.0 | 19.9 | 46.0 | -64.8 | 15.4 | 6.2 | 54.5 | 54.5 | 34.4 | 31.7 | 56.3 | 71.2 | 29.3 | -26.4 | 34.3 | 53.9 | 26.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 |
| Value | 53 | -149.143 | 19 | 14 | 64 | 136 | -12.841 | 33 | 80 | 78 | 59 | -26.682 | -11.568 | -71.866 | -22.857 | 0.957 | 20 | 13 | -100.054 | -12.783 | 22 | 36 | -30.248 | 28 | -28.951 | 15 | 9.179 | -15.074 | 30 | 19 | -16.962 | 6.549 | -85.799 | -22.016 | -15.825 | 20 | 17 | -17.231 | 3.813 | 22 | 35 | -5.654 |
| Percentage of ComprehensiveIncomeNetOfTax | 38.1 | 264.0 | 11.0 | 16.9 | 51.7 | 102.6 | -23.9 | 34.9 | 58.5 | 57.5 | 70.2 | -85.6 | -26.4 | 476.6 | -25.7 | 1.9 | 32.4 | 23.2 | 175.2 | -43.8 | 38.0 | 50.0 | 4999.7 | 56.1 | -2292.2 | 31.9 | 25.4 | -73.3 | 46.6 | 45.2 | -95.8 | 16.0 | 153.6 | -170.3 | -302.3 | 43.6 | 37.3 | -59.1 | 14.1 | 46.0 | 57.3 | -22.4 |
| Percentage of InterestAndDividendIncomeOperating | 25.4 | -72.4 | 9.3 | 7.5 | 33.7 | 64.4 | -5.9 | 15.2 | 37.0 | 37.0 | 29.5 | -14.4 | -6.6 | -42.9 | -14.0 | 0.6 | 13.6 | 9.2 | -72.0 | -9.7 | 17.8 | 29.2 | -25.3 | 24.9 | -28.4 | 16.8 | 9.7 | -16.6 | 33.6 | 21.7 | -19.0 | 7.4 | -99.5 | -26.2 | -18.7 | 23.7 | 20.4 | -20.3 | 4.5 | 25.9 | 40.8 | -6.6 |
| Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 |
| Value | 87 | 92 | 156 | 73 | 60 | -3.439 | 66 | 62 | 56 | 57 | 25 | 57 | 55 | 56 | 111 | 48 | 42 | 44 | 42 | 42 | 37 | 36 | 29 | 22 | 30 | 33 | 26 | 35 | 34 | 23 | 34 | 34 | 29 | 34 | 21 | 26 | 29 | 46 | 23 | 26 | 26 | 30 |
| Percentage of ComprehensiveIncomeNetOfTax | 61.9 | -164.0 | 89.0 | 83.1 | 48.3 | -2.6 | 123.9 | 65.1 | 41.5 | 42.5 | 29.8 | 185.6 | 126.4 | -376.6 | 125.7 | 98.1 | 67.6 | 76.8 | -75.2 | 145.1 | 62.0 | 50.0 | -4899.7 | 43.9 | 2392.2 | 68.1 | 74.6 | 173.3 | 53.4 | 54.8 | 195.8 | 84.0 | -53.6 | 270.3 | 402.3 | 56.4 | 62.7 | 159.1 | 85.9 | 54.0 | 42.7 | 122.4 |
| Percentage of InterestAndDividendIncomeOperating | 41.1 | 45.0 | 75.4 | 37.1 | 31.4 | -1.6 | 30.8 | 28.5 | 26.3 | 27.3 | 12.6 | 31.3 | 31.4 | 33.9 | 68.6 | 30.5 | 28.3 | 30.5 | 30.9 | 32.1 | 29.2 | 29.2 | 24.8 | 19.5 | 29.7 | 35.9 | 28.6 | 39.2 | 38.6 | 26.3 | 38.9 | 38.6 | 34.7 | 41.6 | 24.9 | 30.7 | 34.2 | 54.7 | 27.2 | 30.4 | 30.4 | 35.9 |
| Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 15 | -8.336 | 4.579 | 3.52 |
| Percentage of GainLossOnInvestments | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 7.3 | -4.0 | 2.4 | 1.7 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 |
| Value | 156 | 73 | 60 | -3.439 | 66 | 62 | 56 | 57 | 25 | 57 | 55 | 57 | 47 | 48 | 44 | 41 | 43 | 39 | 36 | 34 |
| Percentage of IncomeLossFromContinuingOperations | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 75.4 | 37.1 | 31.4 | -1.6 | 30.8 | 28.5 | 26.3 | 27.3 | 12.6 | 31.3 | 31.4 | 34.3 | 29.0 | 31.0 | 29.6 | 29.0 | 31.2 | 29.9 | 28.5 | 27.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 |
| Value | 107 | 109 | 191 | 83 | 68 | -4.254 | 77 | 72 | 67 | 68 | 24 | 65 | 66 | 67 | 63 | 61 | 56 | 57 | 53 | 53 | 50 | 48 | 39 | 31 | 39 | 48 | 36 | 48 | 48 |
| Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 50.5 | 53.2 | 92.2 | 42.3 | 35.6 | -2.0 | 35.8 | 33.3 | 31.1 | 32.3 | 12.1 | 35.2 | 37.6 | 40.3 | 39.1 | 39.2 | 37.2 | 39.6 | 38.8 | 40.8 | 39.4 | 39.1 | 33.4 | 27.1 | 39.2 | 51.3 | 39.0 | 53.2 | 54.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 80 | 82 | 174 | 65 | 55 | -23.075 | 58 | 50 | 45 | 45 | 3.764 | 47 | 44 | 42 | 43 | 40 | 33 | 35 |
| Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 75.4 | 75.7 | 91.5 | 78.7 | 81.2 | 542.4 | 75.7 | 69.6 | 67.0 | 67.2 | 15.4 | 72.5 | 66.7 | 62.7 | 68.0 | 65.2 | 60.2 | 61.1 |
| Percentage of InterestAndDividendIncomeOperating | 38.0 | 40.3 | 84.3 | 33.3 | 28.9 | -10.9 | 27.1 | 23.2 | 20.8 | 21.7 | 1.9 | 25.6 | 25.0 | 25.3 | 26.6 | 25.5 | 22.4 | 24.2 |
| Percentage of InterestAndDividendIncomeOperating umbf:CommercialBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 17 | 19 | 14 | 16 | 17 | 26 | 15 | 12 | 13 | 13 | 12 | 11 | 11 | 13 | 13 | 14 | 13 | 12 |
| Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 16.1 | 17.4 | 7.5 | 19.4 | 25.3 | -617.3 | 20.3 | 17.8 | 19.8 | 19.9 | 50.3 | 16.9 | 17.8 | 20.7 | 20.6 | 22.8 | 24.3 | 20.9 |
| Percentage of InterestAndDividendIncomeOperating | 8.1 | 9.3 | 6.9 | 8.2 | 9.0 | 12.4 | 7.3 | 5.9 | 6.2 | 6.4 | 6.1 | 6.0 | 6.7 | 8.3 | 8.0 | 8.9 | 9.0 | 8.3 |
| Percentage of InterestAndDividendIncomeOperating umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 9.147 | 7.555 | 1.901 | 1.563 | -4.473 | -7.439 | -5.51 | -0.192 | 1.182 | 0.51 | 1.978 | 1.43 | 4.033 | 4.968 | 2.707 | 1.187 | 3.168 | 0.903 |
| Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 8.5 | 6.9 | 1.0 | 1.9 | -6.5 | 174.9 | -7.1 | -0.3 | 1.8 | 0.7 | 8.1 | 2.2 | 6.1 | 7.4 | 4.2 | 1.9 | 5.6 | 1.6 |
| Percentage of InterestAndDividendIncomeOperating | 4.3 | 3.7 | 0.9 | 0.8 | -2.3 | -3.5 | -2.6 | -0.1 | 0.5 | 0.2 | 1.0 | 0.8 | 2.3 | 3.0 | 1.7 | 0.8 | 2.1 | 0.6 |
| Percentage of InterestAndDividendIncomeOperating umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 19 | 16 | 34 | 10 | 8.123 | -0.815 | 10 | 10 | 10 | 10 | -0.968 | 7.391 | 10 | 10 | 16 | 12 | 11 | 13 | 11 | 11 | 13 | 12 | 10 | 8.763 | 9.732 | 14 | 9.509 | 12 | 13 | 8.255 | -12.432 | 13 | 10 | 13 | -6.484 | 10 | 12 | 18 | 6.815 | 10 | 10 | 12 | 8.626 | 7.359 | 9.533 | 10 |
| Percentage of IncomeTaxExpenseBenefit | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 9.4 | 8.2 | 16.8 | 5.2 | 4.2 | -0.4 | 5.0 | 4.8 | 4.8 | 5.0 | -0.5 | 4.0 | 6.2 | 6.0 | 10.1 | 8.2 | 7.6 | 9.1 | 7.9 | 9.1 | 10.3 | 9.9 | 8.6 | 7.6 | 9.6 | 15.3 | 10.1 | 13.7 | 15.6 | 9.3 | -13.9 | 14.8 | 12.4 | 15.7 | -7.7 | 12.0 | 14.4 | 22.0 | 8.0 | 11.8 | 11.9 | 14.8 | 9.9 | 8.5 | 11.0 | 12.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 15 | 12 | 30 | 8.1 | 6.597 | -4.421 | 8.197 | 7.39 | 7.008 | 7.071 | -2.208 | 5.381 | 7.246 | 6.284 | 11 | 8.454 | 7.188 | 8.007 |
| Percentage of IncomeTaxExpenseBenefit | 75.4 | 75.7 | 87.7 | 78.7 | 81.2 | 542.5 | 76.2 | 69.6 | 67.0 | 67.2 | 228.1 | 72.8 | 66.6 | 62.6 | 67.8 | 65.2 | 62.6 | 60.9 |
| Percentage of InterestAndDividendIncomeOperating | 7.1 | 6.2 | 14.7 | 4.1 | 3.4 | -2.1 | 3.8 | 3.4 | 3.2 | 3.3 | -1.1 | 2.9 | 4.1 | 3.7 | 6.8 | 5.4 | 4.8 | 5.5 |
| Percentage of InterestAndDividendIncomeOperating umbf:CommercialBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 3.206 | 2.943 | 4.347 | 2.0 | 2.055 | 5.032 | 2.196 | 1.891 | 2.071 | 2.097 | 0.78 | 1.241 | 1.939 | 2.08 | 3.509 | 2.965 | 3.137 | 2.734 |
| Percentage of IncomeTaxExpenseBenefit | 16.1 | 17.4 | 12.5 | 19.4 | 25.3 | -617.4 | 20.4 | 17.8 | 19.8 | 19.9 | -80.6 | 16.8 | 17.8 | 20.7 | 21.3 | 22.9 | 27.3 | 20.8 |
| Percentage of InterestAndDividendIncomeOperating | 1.5 | 1.4 | 2.1 | 1.0 | 1.1 | 2.4 | 1.0 | 0.9 | 1.0 | 1.0 | 0.4 | 0.7 | 1.1 | 1.2 | 2.2 | 1.9 | 2.1 | 1.9 |
| Percentage of InterestAndDividendIncomeOperating umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 1.697 | 1.167 | -0.074 | 0.193 | -0.529 | -1.426 | -0.821 | -0.028 | 0.184 | 0.079 | 0.033 | 0.16 | 0.662 | 0.738 | 0.525 | 0.244 | 0.106 | 0.224 |
| Percentage of IncomeTaxExpenseBenefit | 8.5 | 6.9 | -0.2 | 1.9 | -6.5 | 175.0 | -7.6 | -0.3 | 1.8 | 0.8 | -3.4 | 2.2 | 6.1 | 7.4 | 3.2 | 1.9 | 0.9 | 1.7 |
| Percentage of InterestAndDividendIncomeOperating | 0.8 | 0.6 | -0.0 | 0.1 | -0.3 | -0.7 | -0.4 | -0.0 | 0.1 | 0.0 | 0.0 | 0.1 | 0.4 | 0.4 | 0.3 | 0.2 | 0.1 | 0.2 |
| Percentage of InterestAndDividendIncomeOperating umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 47 | 0.622 | 0.75 | 15 | 18 | -1.53 | 0.189 | 1.45 | 0.618 | -0.012 | 0.351 | 11 | 45 | 5.972 |
| Percentage of IncomeTaxesPaidNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 22.3 | 0.3 | 0.4 | 8.1 | 9.8 | -0.7 | 0.1 | 0.7 | 0.3 | -0.0 | 0.2 | 6.0 | 25.9 | 3.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 245000.0 | 420000.0 | 318000.0 | 259000.0 | 533000.0 | 259000.0 | 511000.0 | 320000.0 | 465000.0 | 338000.0 | 301000.0 | 388000.0 | 425000.0 | 513000.0 | 646000.0 | 833000.0 | 698000.0 | 1160000.0 | 1497000.0 | 894000.0 | 480000.0 | 586000.0 | 570000.0 | 765000.0 | 911000.0 | 732000.0 | 603000.0 | 661000.0 | 869000.0 | 1236000.0 | 961000.0 | 1146000.0 | 1028000.0 | 913000.0 | 1009000.0 | 968000.0 | 1038000.0 | 1165000.0 | 1204000.0 | 1025000.0 | 1554000.0 | 1287000.0 | 1699000.0 |
| Percentage of InsuranceCommissionsAndFees | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 0.1 | 0.2 | 0.2 | 0.1 | 0.3 | 0.1 | 0.2 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.4 | 0.6 | 0.5 | 0.9 | 1.2 | 0.7 | 0.4 | 0.6 | 0.6 | 0.8 | 1.0 | 0.8 | 0.7 | 0.7 | 1.0 | 1.4 | 1.1 | 1.4 | 1.2 | 1.1 | 1.2 | 1.1 | 1.2 | 1.3 | 1.4 | 1.2 | 1.8 | 1.5 | 2.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 154 | 150 | 152 | 142 | 140 | 151 | 156 | 162 | 161 | 157 | 154 | 143 | 135 | 126 | 122 | 119 | 112 | 106 | 102 | 98 | 93 | 90 | 88 | 84 | 71 | 64 | 64 | 61 | 60 | 58 | 59 | 59 | 56 | 54 | 54 | 54 | 54 | 54 | 54 | 55 | 55 | 53 | 55 | 56 | 55 | 53 |
| Percentage of InterestAndFeeIncomeLoansAndLeases | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 72.7 | 72.9 | 73.6 | 72.3 | 72.6 | 71.4 | 72.5 | 74.0 | 74.7 | 74.4 | 76.0 | 77.8 | 76.6 | 75.2 | 75.3 | 75.5 | 74.5 | 73.6 | 74.1 | 74.8 | 73.5 | 73.0 | 73.6 | 73.5 | 70.1 | 68.4 | 68.4 | 67.9 | 67.2 | 66.1 | 66.4 | 66.4 | 65.7 | 65.2 | 64.7 | 64.2 | 63.3 | 63.8 | 63.8 | 64.7 | 63.7 | 62.8 | 64.3 | 65.1 | 64.5 | 62.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 11 | 11 | 12 | 12 | 14 | 37 | 43 | 50 | 50 | 47 | 40 | 34 | 26 | 19 | 16 | 17 | 13 | 10 | 7.554 | 7.273 | 6.687 | 6.194 | 5.161 | 5.334 | 4.524 | 3.595 | 3.304 | 3.291 | 3.619 | 3.602 | 3.217 | 3.551 | 3.885 | 4.419 | 4.394 | 4.614 | 4.977 | 5.644 | 5.972 | 6.55 | 6.633 | 7.525 | 7.994 | 8.508 | 9.065 | 10 |
| Percentage of InterestExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 5.4 | 5.8 | 6.1 | 6.4 | 7.5 | 17.7 | 20.1 | 23.2 | 23.2 | 22.5 | 20.2 | 18.7 | 14.9 | 11.8 | 10.3 | 10.8 | 9.1 | 7.2 | 5.4 | 5.5 | 5.2 | 5.0 | 4.3 | 4.6 | 4.4 | 3.8 | 3.5 | 3.6 | 4.0 | 4.0 | 3.6 | 4.0 | 4.5 | 5.3 | 5.2 | 5.4 | 5.8 | 6.7 | 7.0 | 7.6 | 7.7 | 8.8 | 9.2 | 9.8 | 10.5 | 12.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 201 | 194 | 194 | 184 | 178 | 173 | 172 | 168 | 166 | 163 | 161 | 150 | 150 | 147 | 146 | 140 | 137 | 134 | 131 | 124 | 121 | 117 | 114 | 109 | 97 | 90 | 90 | 87 | 86 | 85 | 85 | 85 | 82 | 79 | 80 | 80 | 80 | 79 | 79 | 79 | 79 | 78 | 78 | 78 | 77 | 75 |
| Percentage of InterestIncomeExpenseNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 94.6 | 94.2 | 93.9 | 93.6 | 92.5 | 82.3 | 79.9 | 76.8 | 76.8 | 77.5 | 79.8 | 81.3 | 85.1 | 88.2 | 89.7 | 89.2 | 90.9 | 92.8 | 94.6 | 94.5 | 94.8 | 95.0 | 95.7 | 95.4 | 95.6 | 96.2 | 96.5 | 96.4 | 96.0 | 96.0 | 96.4 | 96.0 | 95.5 | 94.7 | 94.8 | 94.6 | 94.2 | 93.3 | 93.0 | 92.4 | 92.3 | 91.2 | 90.8 | 90.2 | 89.5 | 88.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 135 | 133 | 133 | 122 | 113 | 106 | 105 | 104 | 102 | 99 | 100 | 94 | 93 | 91 | 92 | 89 | 86 | 85 |
| Percentage of InterestIncomeExpenseNet | 67.5 | 68.5 | 68.3 | 66.4 | 63.4 | 61.5 | 61.2 | 62.0 | 61.6 | 60.9 | 62.3 | 62.9 | 61.9 | 62.2 | 63.0 | 63.5 | 63.2 | 63.6 |
| Percentage of InterestAndDividendIncomeOperating | 63.8 | 64.6 | 64.2 | 62.1 | 58.7 | 50.6 | 48.9 | 47.6 | 47.3 | 47.2 | 49.7 | 51.1 | 52.7 | 54.9 | 56.5 | 56.6 | 57.4 | 59.0 |
| Percentage of InterestAndDividendIncomeOperating umbf:CommercialBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 21 | 22 | 22 | 23 | 28 | 33 | 21 | 18 | 19 | 20 | 19 | 15 | 16 | 15 | 15 | 12 | 12 | 11 |
| Percentage of InterestIncomeExpenseNet | 10.6 | 11.4 | 11.5 | 12.7 | 15.8 | 19.0 | 12.5 | 11.1 | 11.5 | 12.6 | 11.9 | 10.2 | 10.8 | 10.6 | 10.4 | 9.1 | 9.0 | 8.6 |
| Percentage of InterestAndDividendIncomeOperating | 10.0 | 10.7 | 10.8 | 11.9 | 14.6 | 15.6 | 10.0 | 8.5 | 8.8 | 9.8 | 9.5 | 8.3 | 9.2 | 9.4 | 9.3 | 8.1 | 8.2 | 8.0 |
| Percentage of InterestAndDividendIncomeOperating umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 44 | 38 | 39 | 38 | 37 | 33 | 33 | 33 | 33 | 32 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 |
| Percentage of InterestIncomeExpenseNet | 22.0 | 20.1 | 20.2 | 21.0 | 20.8 | 19.5 | 19.2 | 19.8 | 20.0 | 19.7 | 19.7 | 20.7 | 20.7 | 20.9 | 21.1 | 21.8 | 22.3 | 22.4 |
| Percentage of InterestAndDividendIncomeOperating | 20.8 | 18.9 | 19.0 | 19.6 | 19.2 | 16.1 | 15.4 | 15.2 | 15.4 | 15.3 | 15.7 | 16.8 | 17.6 | 18.4 | 18.9 | 19.4 | 20.2 | 20.8 |
| Percentage of InterestAndDividendIncomeOperating umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 |
| Value | 10 | 14 | 11 | 13 | 17 | 42 | 43 | 50 | 55 | 39 | 39 | 32 | 24 | 19 | 16 | 16 |
| Percentage of InterestPaidNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 4.7 | 7.0 | 5.3 | 6.9 | 9.1 | 19.9 | 20.2 | 23.0 | 25.8 | 18.7 | 19.3 | 17.4 | 14.0 | 11.4 | 10.2 | 10.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 4.797 | 2.345 | 3.717 | 3.038 | 3.284 | 4.64 | 8.385 | 5.655 | 7.304 | 4.913 | 6.483 | 6.671 | 6.184 | 5.034 | 6.54 | 5.056 | 5.732 | 4.503 | 6.256 | 5.332 | 6.313 | 4.441 | 6.816 | 5.766 | 6.53 | 4.618 | 7.182 | 6.057 | 6.307 | 4.602 | 7.189 | 5.536 | 5.705 | 4.272 | 6.989 | 7.368 | 5.986 | 4.26 | 5.958 | 4.912 | 5.158 | 4.122 | 5.787 | 4.426 | 4.43 | 3.705 |
| Percentage of MarketingAndAdvertisingExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 2.3 | 1.1 | 1.8 | 1.5 | 1.7 | 2.2 | 3.9 | 2.6 | 3.4 | 2.3 | 3.2 | 3.6 | 3.5 | 3.0 | 4.0 | 3.2 | 3.8 | 3.1 | 4.5 | 4.0 | 4.9 | 3.6 | 5.7 | 5.0 | 6.4 | 4.9 | 7.6 | 6.7 | 7.0 | 5.2 | 8.1 | 6.2 | 6.6 | 5.1 | 8.3 | 8.7 | 7.0 | 5.0 | 7.0 | 5.7 | 6.0 | 4.8 | 6.7 | 5.1 | 5.1 | 4.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 87 | 92 | 156 | 73 | 60 | -3.439 | 66 | 62 | 56 | 57 | 25 | 57 | 55 | 56 | 111 | 48 | 42 | 44 | 42 | 41 | 37 | 36 | 29 | 22 | 30 | 33 | 26 | 35 | 34 | 23 | 34 | 34 | 29 | 34 | 21 | 26 | 29 | 46 | 23 | 26 | 26 | 30 | 19 | 22 | 23 | 26 |
| Percentage of NetIncomeLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 41.1 | 45.0 | 75.4 | 37.1 | 31.4 | -1.6 | 30.8 | 28.5 | 26.3 | 27.3 | 12.6 | 31.3 | 31.4 | 33.9 | 68.6 | 30.5 | 28.3 | 30.5 | 30.9 | 31.8 | 29.2 | 29.2 | 24.8 | 19.5 | 29.7 | 35.9 | 28.6 | 39.2 | 38.6 | 26.3 | 38.9 | 38.6 | 34.7 | 41.6 | 24.9 | 30.7 | 34.2 | 54.7 | 27.2 | 30.4 | 30.4 | 35.9 | 21.9 | 26.2 | 26.5 | 30.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 65 | 70 | 57 | 49 | -18.654 | 43 | 38 | 38 |
| Percentage of NetIncomeLoss | 75.4 | 75.7 | 78.7 | 81.2 | 542.4 | 69.6 | 67.0 | 67.1 |
| Percentage of InterestAndDividendIncomeOperating | 31.0 | 34.1 | 29.2 | 25.5 | -8.8 | 19.8 | 17.6 | 18.4 |
| Percentage of InterestAndDividendIncomeOperating umbf:CommercialBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 14 | 16 | 14 | 15 | 21 | 19 | 17 | 18 |
| Percentage of NetIncomeLoss | 16.1 | 17.4 | 19.4 | 25.3 | -617.3 | 30.6 | 31.3 | 32.1 |
| Percentage of InterestAndDividendIncomeOperating | 6.6 | 7.8 | 7.2 | 7.9 | 10.0 | 8.7 | 8.2 | 8.8 |
| Percentage of InterestAndDividendIncomeOperating umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 7.45 | 6.388 | 1.37 | -3.944 | -6.013 | -0.164 | 0.998 | 0.431 |
| Percentage of NetIncomeLoss | 8.5 | 6.9 | 1.9 | -6.5 | 174.8 | -0.3 | 1.8 | 0.7 |
| Percentage of InterestAndDividendIncomeOperating | 3.5 | 3.1 | 0.7 | -2.0 | -2.8 | -0.1 | 0.5 | 0.2 |
| Percentage of InterestAndDividendIncomeOperating umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 |
| Value | 53 | -149.143 | 19 | 14 | 64 | 136 | -12.841 | 33 | 80 | 78 | 59 | -26.682 | -11.568 | -71.866 | -22.857 | 0.957 | 20 | 13 | -100.054 | -12.783 | 22 | 36 | -30.248 | 28 | -28.951 | 15 |
| Percentage of OtherComprehensiveIncomeLossNetOfTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 25.4 | -72.4 | 9.3 | 7.5 | 33.7 | 64.4 | -5.9 | 15.2 | 37.0 | 37.0 | 29.5 | -14.4 | -6.6 | -42.9 | -14.0 | 0.6 | 13.6 | 9.2 | -72.0 | -9.7 | 17.8 | 29.2 | -25.3 | 24.9 | -28.4 | 16.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 0.01 | 0.064 | 0.061 | 0.067 | 0.058 | 0.059 | 0.057 | 0.054 | 0.055 | 0.048 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of InterestAndDividendIncomeOperating umbf:BrokerageFees umbf:CommercialBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 0.673 | 1.319 | 1.888 | 2.775 | 3.822 | 7.59 | 6.731 | 6.052 | 5.026 | 5.422 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 6730.0 | 2060.9 | 3095.1 | 4141.8 | 6589.7 | 12864.4 | 11808.8 | 11207.4 | 9138.2 | 11295.8 |
| Percentage of InterestAndDividendIncomeOperating | 0.3 | 0.6 | 0.9 | 1.4 | 2.0 | 3.6 | 3.1 | 2.8 | 2.3 | 2.6 |
| Percentage of InterestAndDividendIncomeOperating umbf:BrokerageFees umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 1.909 | 1.951 | 1.969 | 1.977 | 1.873 | 2.211 | 2.051 | 1.996 | 1.996 | 1.773 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 19090.0 | 3048.4 | 3227.9 | 2950.7 | 3229.3 | 3747.5 | 3598.2 | 3696.3 | 3629.1 | 3693.8 |
| Percentage of InterestAndDividendIncomeOperating | 0.9 | 0.9 | 0.9 | 1.0 | 1.0 | 1.0 | 1.0 | 0.9 | 0.9 | 0.8 |
| Percentage of InterestAndDividendIncomeOperating umbf:BrokerageFees umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 0.245 | 0.42 | 0.318 | 0.259 | 0.533 | 0.259 | 0.511 | 0.32 | 0.465 | 0.338 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 2450.0 | 656.2 | 521.3 | 386.6 | 919.0 | 439.0 | 896.5 | 592.6 | 845.5 | 704.2 |
| Percentage of InterestAndDividendIncomeOperating | 0.1 | 0.2 | 0.2 | 0.1 | 0.3 | 0.1 | 0.2 | 0.1 | 0.2 | 0.2 |
| Percentage of InterestAndDividendIncomeOperating umbf:InsuranceFeesAndCommissions umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 0.196 | 0.231 | 0.238 | 0.24 | 0.161 | 0.4 | 0.277 | 0.288 | 0.292 | 0.339 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 1960.0 | 360.9 | 390.2 | 358.2 | 277.6 | 678.0 | 486.0 | 533.3 | 530.9 | 706.2 |
| Percentage of InterestAndDividendIncomeOperating | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.1 | 0.1 | 0.1 | 0.2 |
| Percentage of InterestAndDividendIncomeOperating umbf:OtherFinancialServices umbf:CommercialBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 0.411 | 0.404 | 0.394 | 0.363 | 0.37 | 0.438 | 0.371 | 0.377 | 0.381 | 0.339 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 4110.0 | 631.2 | 645.9 | 541.8 | 637.9 | 742.4 | 650.9 | 698.1 | 692.7 | 706.2 |
| Percentage of InterestAndDividendIncomeOperating | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Percentage of InterestAndDividendIncomeOperating umbf:OtherFinancialServices umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 0.646 | 0.669 | 0.626 | 0.649 | 0.615 | 0.713 | 0.725 | 0.751 | 0.844 | 0.871 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 6460.0 | 1045.3 | 1026.2 | 968.7 | 1060.3 | 1208.5 | 1271.9 | 1390.7 | 1534.5 | 1814.6 |
| Percentage of InterestAndDividendIncomeOperating | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 | 0.4 |
| Percentage of InterestAndDividendIncomeOperating umbf:OtherFinancialServices umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 0.32 | 0.301 | 0.002 | 0.074 | 0.023 | 0.656 | 0.076 | 0.403 | 0.134 | 0.128 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 3200.0 | 470.3 | 3.3 | 110.4 | 39.7 | 1111.9 | 133.3 | 746.3 | 243.6 | 266.7 |
| Percentage of InterestAndDividendIncomeOperating | 0.2 | 0.1 | 0.0 | 0.0 | 0.0 | 0.3 | 0.0 | 0.2 | 0.1 | 0.1 |
| Percentage of InterestAndDividendIncomeOperating umbf:TradingAndInvestmentBanking umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 14 | 12 | 12 | 12 | 10 | 14 | 15 | 15 | 15 | 14 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 143270.0 | 19326.6 | 21147.5 | 19334.3 | 18815.5 | 25403.4 | 26531.6 | 28796.3 | 27660.0 | 30183.3 |
| Percentage of InterestAndDividendIncomeOperating | 6.7 | 6.0 | 6.2 | 6.6 | 5.7 | 7.1 | 7.0 | 7.1 | 7.0 | 6.9 |
| Percentage of InterestAndDividendIncomeOperating us-gaap:CreditCard umbf:CommercialBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 4.771 | 4.813 | 4.766 | 4.706 | 3.535 | 4.724 | 5.268 | 5.32 | 5.274 | 5.525 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 47710.0 | 7520.3 | 7813.1 | 7023.9 | 6094.8 | 8006.8 | 9242.1 | 9851.9 | 9589.1 | 11510.4 |
| Percentage of InterestAndDividendIncomeOperating | 2.2 | 2.3 | 2.3 | 2.4 | 1.8 | 2.2 | 2.4 | 2.4 | 2.4 | 2.6 |
| Percentage of InterestAndDividendIncomeOperating us-gaap:CreditCard umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 5.775 | 5.107 | 5.243 | 5.213 | 4.677 | 4.99 | 5.533 | 5.617 | 5.646 | 5.115 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 57750.0 | 7979.7 | 8595.1 | 7780.6 | 8063.8 | 8457.6 | 9707.0 | 10401.9 | 10265.5 | 10656.2 |
| Percentage of InterestAndDividendIncomeOperating | 2.7 | 2.5 | 2.5 | 2.6 | 2.4 | 2.4 | 2.6 | 2.6 | 2.6 | 2.4 |
| Percentage of InterestAndDividendIncomeOperating us-gaap:CreditCard umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 8.23 | 7.528 | 7.525 | 7.428 | 6.891 | 6.892 | 7.324 | 7.539 | 7.392 | 7.461 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 82300.0 | 11762.5 | 12336.1 | 11086.6 | 11881.0 | 11681.4 | 12849.1 | 13961.1 | 13440.0 | 15543.8 |
| Percentage of InterestAndDividendIncomeOperating | 3.9 | 3.7 | 3.6 | 3.8 | 3.6 | 3.3 | 3.4 | 3.4 | 3.4 | 3.5 |
| Percentage of InterestAndDividendIncomeOperating us-gaap:DepositAccount umbf:CommercialBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 12 | 12 | 10 | 10 | 10 | 15 | 9.998 | 10 | 10 | 11 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 124320.0 | 19651.6 | 16986.9 | 15194.0 | 18037.9 | 26452.5 | 17540.4 | 18918.5 | 19330.9 | 23077.1 |
| Percentage of InterestAndDividendIncomeOperating | 5.8 | 6.1 | 5.0 | 5.2 | 5.4 | 7.4 | 4.6 | 4.7 | 4.9 | 5.2 |
| Percentage of InterestAndDividendIncomeOperating us-gaap:DepositAccount umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 1.852 | 1.801 | 2.124 | 1.986 | 1.672 | 2.539 | 2.739 | 2.828 | 2.689 | 2.708 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 18520.0 | 2814.1 | 3482.0 | 2964.2 | 2882.8 | 4303.4 | 4805.3 | 5237.0 | 4889.1 | 5641.7 |
| Percentage of InterestAndDividendIncomeOperating | 0.9 | 0.9 | 1.0 | 1.0 | 0.9 | 1.2 | 1.3 | 1.3 | 1.2 | 1.3 |
| Percentage of InterestAndDividendIncomeOperating us-gaap:DepositAccount umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 40 | 37 | 34 | 34 | 31 | 31 | 30 | 28 | 27 | 26 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 401180.0 | 58570.3 | 56465.6 | 51026.9 | 54060.3 | 52986.4 | 53619.3 | 53351.9 | 49547.3 | 55602.1 |
| Percentage of InterestAndDividendIncomeOperating | 18.9 | 18.2 | 16.6 | 17.4 | 16.3 | 14.8 | 14.2 | 13.1 | 12.6 | 12.6 |
| Percentage of InterestAndDividendIncomeOperating us-gaap:FiduciaryAndTrust umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 13 | 17 | 16 | 16 | 14 | 15 | 16 | 16 | 15 | 15 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 137450.0 | 27107.8 | 26768.9 | 24423.9 | 25803.4 | 26674.6 | 28547.4 | 30385.2 | 28458.2 | 31808.3 |
| Percentage of InterestAndDividendIncomeOperating | 6.5 | 8.4 | 7.9 | 8.3 | 7.8 | 7.4 | 7.5 | 7.5 | 7.2 | 7.2 |
| Percentage of InterestAndDividendIncomeOperating us-gaap:FiduciaryAndTrust umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 22 | 20 | 20 | 20 | 18 | 22 | 22 | 23 | 22 | 22 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 227630.0 | 31550.0 | 33973.8 | 30879.1 | 31074.1 | 37862.7 | 39966.7 | 43390.7 | 41730.9 | 46533.3 |
| Percentage of InterestAndDividendIncomeOperating | 10.7 | 9.8 | 10.0 | 10.5 | 9.3 | 10.6 | 10.6 | 10.7 | 10.6 | 10.6 |
| Percentage of InterestAndDividendIncomeOperating umbf:CommercialBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 58 | 56 | 51 | 52 | 49 | 60 | 53 | 51 | 48 | 49 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 587250.0 | 88904.7 | 85009.8 | 78038.8 | 85460.3 | 102164.4 | 92994.7 | 94774.1 | 88541.8 | 102458.3 |
| Percentage of InterestAndDividendIncomeOperating | 27.6 | 27.6 | 25.0 | 26.5 | 25.7 | 28.5 | 24.6 | 23.4 | 22.5 | 23.3 |
| Percentage of InterestAndDividendIncomeOperating umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 24 | 27 | 26 | 26 | 24 | 26 | 27 | 27 | 27 | 26 |
| Percentage of RevenueFromContractWithCustomerExcludingAssessedTax | 241720.0 | 42651.6 | 43621.3 | 39474.6 | 41958.6 | 44830.5 | 48826.3 | 51703.7 | 49621.8 | 54318.8 |
| Percentage of InterestAndDividendIncomeOperating | 11.4 | 13.3 | 12.8 | 13.4 | 12.6 | 12.5 | 12.9 | 12.7 | 12.6 | 12.3 |
| Percentage of InterestAndDividendIncomeOperating umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 36619 | 34669 | 33127 | 30250 | 29753 | 26244 | 26561 | 24143 | 24016 | 23556 | 23351 | 21462 | 20531 | 20987 | 21771 | 20279 | 20353 | 20576 | 20682 | 19726 | 19734 | 19302 | 19094 | 18597 | 18418 | 16730 | 17500 | 16284 | 15562 | 15945 | 16911 | 16184 | 15253 | 15705 | 14927 | 13285 | 13182 | 13641 | 13541 | 12139 | 12770 | 13352 | 12404 | 11663 |
| Percentage of Assets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 3354 | 2735 | 2344 | 2299 |
| Percentage of Assets | 10.1 | 10.3 | 10.0 | 10.6 |
| Percentage of Assets | 10.1 | 10.3 | 10.0 | 10.6 |
| Percentage of Assets srt:ParentCompany | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 33528 | 31711 | 30110 | 27396 | 26976 | 23581 | 23954 | 21579 | 21538 | 21205 | 21122 | 19258 | 18329 | 18820 | 19590 | 18177 | 18282 | 18565 | 18720 | 17701 | 17731 | 17354 | 17200 | 16697 | 16561 | 15047 | 15857 | 14668 | 13961 | 14403 | 15405 | 14720 | 14026 | 14419 | 13647 | 11991 | 11930 | 12428 | 12350 | 10968 | 11637 | 12273 | 11344 | 10647 |
| Percentage of Liabilities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 91.6 | 91.5 | 90.9 | 90.6 | 90.7 | 89.9 | 90.2 | 89.4 | 89.7 | 90.0 | 90.5 | 89.7 | 89.3 | 89.7 | 90.0 | 89.6 | 89.8 | 90.2 | 90.5 | 89.7 | 89.9 | 89.9 | 90.1 | 89.8 | 89.9 | 89.9 | 90.6 | 90.1 | 89.7 | 90.3 | 91.1 | 91.0 | 92.0 | 91.8 | 91.4 | 90.3 | 90.5 | 91.1 | 91.2 | 90.4 | 91.1 | 91.9 | 91.4 | 91.3 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 337 | 128 | 115 | 117 |
| Percentage of Liabilities | 1.1 | 0.5 | 0.5 | 0.6 |
| Percentage of Assets | 1.0 | 0.5 | 0.5 | 0.5 |
| Percentage of Assets srt:ParentCompany | 10.1 | 4.7 | 4.9 | 5.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 36619 | 34669 | 33127 | 30250 | 29753 | 26244 | 26561 | 24143 | 24016 | 23556 | 23351 | 21462 | 20531 | 20987 | 21771 | 20279 | 20353 | 20576 | 20682 | 19726 | 19734 | 19302 | 19094 | 18597 | 18418 | 16730 | 17500 | 16284 | 15562 | 15945 | 16911 | 16184 | 15253 | 15705 | 14927 | 13285 | 13182 | 13641 | 13541 | 12139 | 12770 | 13352 | 12404 | 11663 |
| Percentage of LiabilitiesAndStockholdersEquity | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 3354 | 2735 | 2344 | 2299 |
| Percentage of LiabilitiesAndStockholdersEquity | 10.1 | 10.3 | 10.0 | 10.6 |
| Percentage of Assets | 10.1 | 10.3 | 10.0 | 10.6 |
| Percentage of Assets srt:ParentCompany | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | 3090 | 2958 | 3016 | 2854 | 2777 | 2663 | 2606 | 2563 | 2477 | 2350 | 2228 | 2203 | 2201 | 2167 | 2181 | 2101 | 2071 | 2010 | 1962 | 2024 | 2002 | 1947 | 1893 | 1900 | 1857 | 1682 | 1643 | 1615 | 1601 | 1542 | 1506 | 1463 | 1226 | 1285 | 1279 | 1294 | 1251 | 1212 | 1191 | 1170 | 1132 | 1078 | 1060 | 1090 | 1068 | 1029 | 1015 | 974 | 890 |
| Percentage of StockholdersEquity | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 8.4 | 8.5 | 9.1 | 9.4 | 9.3 | 10.1 | 9.8 | 10.6 | 10.3 | 10.0 | 9.5 | 10.3 | 10.7 | 10.3 | 10.0 | 10.4 | 10.2 | 9.8 | 9.5 | 10.3 | 10.1 | 10.1 | 9.9 | 10.2 | 10.1 | 10.1 | 9.4 | 9.9 | 10.3 | 9.7 | 8.9 | 9.0 | 8.0 | 8.2 | 8.6 | 9.7 | 9.5 | 8.9 | 8.8 | 9.6 | 8.9 | 8.1 | 8.6 | 0.0 | 0.0 | 0.0 | 8.7 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 3016 | 2606 | 2228 | 2181 |
| Percentage of StockholdersEquity | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 9.1 | 9.8 | 9.5 | 10.0 |
| Percentage of Assets srt:ParentCompany | 89.9 | 95.3 | 95.1 | 94.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | 223 | 169 | 318 | 299 | 284 | 219 | 83 | 96 | 62 | -17.639 | -95.782 | -155.641 | -128.959 | -117.391 | -45.525 | -22.668 | -23.625 | -44.159 | -57.542 | 42 | 55 | 32 | -3.718 | 26 | -2.141 | 26 | 11 | 1.827 | 16 | -13.297 | -32.64 | -15.678 | -22.227 | 63 | 85 | 101 | 81 | 63 | 81 | 77 | 55 | 19 | 25 | 67 | 60 | 36 | 40 | 41 | 12 |
| Percentage of StockholdersEquity | 7.2 | 5.7 | 10.6 | 10.5 | 10.2 | 8.2 | 3.2 | 3.7 | 2.5 | -0.8 | -4.3 | -7.1 | -5.9 | -5.4 | -2.1 | -1.1 | -1.1 | -2.2 | -2.9 | 2.1 | 2.8 | 1.7 | -0.2 | 1.4 | -0.1 | 1.6 | 0.7 | 0.1 | 1.1 | -0.9 | -2.2 | -1.1 | -1.8 | 4.9 | 6.7 | 7.8 | 6.5 | 5.3 | 6.8 | 6.6 | 4.9 | 1.8 | 2.4 | 6.2 | 5.7 | 3.6 | 4.0 | 4.2 | 1.4 |
| Percentage of Assets | 0.6 | 0.5 | 1.0 | 1.0 | 1.0 | 0.8 | 0.3 | 0.4 | 0.3 | -0.1 | -0.4 | -0.7 | -0.6 | -0.6 | -0.2 | -0.1 | -0.1 | -0.2 | -0.3 | 0.2 | 0.3 | 0.2 | -0.0 | 0.1 | -0.0 | 0.2 | 0.1 | 0.0 | 0.1 | -0.1 | -0.2 | -0.1 | -0.1 | 0.4 | 0.6 | 0.8 | 0.6 | 0.5 | 0.6 | 0.6 | 0.4 | 0.1 | 0.2 | 0.0 | 0.0 | 0.0 | 0.3 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | 1098 | 1093 | 1090 | 1085 | 1081 | 1073 | 1073 | 1069 | 1065 | 1060 | 1054 | 1054 | 1050 | 1046 | 1046 | 1042 | 1037 | 1033 | 1033 | 1028 | 1023 | 1017 | 1019 | 1015 | 1009 | 892 | 894 | 891 | 887 | 883 | 882 | 862 | 736 | 732 | 732 | 730 | 726 | 722 | 723 | 721 | 719 | 718 | 718 | 716 | 715 | 713 | 712 | 707 | 702 |
| Percentage of StockholdersEquity | 35.5 | 37.0 | 36.1 | 38.0 | 38.9 | 40.3 | 41.2 | 41.7 | 43.0 | 45.1 | 47.3 | 47.9 | 47.7 | 48.3 | 48.0 | 49.6 | 50.1 | 51.4 | 52.7 | 50.8 | 51.1 | 52.2 | 53.9 | 53.4 | 54.4 | 53.1 | 54.4 | 55.2 | 55.4 | 57.3 | 58.6 | 58.9 | 60.0 | 57.0 | 57.2 | 56.4 | 58.0 | 59.6 | 60.7 | 61.7 | 63.5 | 66.6 | 67.7 | 65.7 | 66.9 | 69.3 | 70.2 | 72.6 | 78.9 |
| Percentage of Assets | 3.0 | 3.2 | 3.3 | 3.6 | 3.6 | 4.1 | 4.0 | 4.4 | 4.4 | 4.5 | 4.5 | 4.9 | 5.1 | 5.0 | 4.8 | 5.1 | 5.1 | 5.0 | 5.0 | 5.2 | 5.2 | 5.3 | 5.3 | 5.5 | 5.5 | 5.3 | 5.1 | 5.5 | 5.7 | 5.5 | 5.2 | 5.3 | 4.8 | 4.7 | 4.9 | 5.5 | 5.5 | 5.3 | 5.3 | 5.9 | 5.6 | 5.4 | 5.8 | 0.0 | 0.0 | 0.0 | 6.1 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AdditionalPaidInCapital | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | 2040 | 1968 | 1891 | 1750 | 1692 | 1646 | 1672 | 1621 | 1573 | 1531 | 1488 | 1477 | 1434 | 1393 | 1338 | 1239 | 1204 | 1174 | 1142 | 1112 | 1083 | 1058 | 1033 | 1016 | 1005 | 986 | 963 | 947 | 922 | 897 | 884 | 860 | 834 | 813 | 787 | 774 | 756 | 735 | 697 | 682 | 664 | 646 | 623 | 612 | 596 | 581 | 562 | 502 | 430 |
| Percentage of StockholdersEquity | 66.0 | 66.5 | 62.7 | 61.3 | 60.9 | 61.8 | 64.2 | 63.2 | 63.5 | 65.1 | 66.8 | 67.1 | 65.1 | 64.3 | 61.3 | 59.0 | 58.2 | 58.4 | 58.2 | 55.0 | 54.1 | 54.3 | 54.6 | 53.5 | 54.1 | 58.7 | 58.6 | 58.7 | 57.6 | 58.2 | 58.7 | 58.8 | 68.0 | 63.3 | 61.5 | 59.9 | 60.5 | 60.7 | 58.6 | 58.4 | 58.7 | 59.9 | 58.8 | 56.2 | 55.9 | 56.5 | 55.4 | 51.5 | 48.4 |
| Percentage of Assets | 5.6 | 5.7 | 5.7 | 5.8 | 5.7 | 6.3 | 6.3 | 6.7 | 6.6 | 6.5 | 6.4 | 6.9 | 7.0 | 6.6 | 6.1 | 6.1 | 5.9 | 5.7 | 5.5 | 5.6 | 5.5 | 5.5 | 5.4 | 5.5 | 5.5 | 5.9 | 5.5 | 5.8 | 5.9 | 5.6 | 5.2 | 5.3 | 5.5 | 5.2 | 5.3 | 5.8 | 5.7 | 5.4 | 5.2 | 5.6 | 5.2 | 4.8 | 5.0 | 0.0 | 0.0 | 0.0 | 4.8 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:RetainedEarnings | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | -326.193 | -328.0 | -338.145 | -335.744 | -335.926 | -330.846 | -277.999 | -277.92 | -278.771 | -278.601 | -273.827 | -228.485 | -209.288 | -210.438 | -212.206 | -212.733 | -202.647 | -207.832 | -211.437 | -214.423 | -214.095 | -215.117 | -211.524 | -212.319 | -211.388 | -279.072 | -280.818 | -280.552 | -279.97 | -280.583 | -283.389 | -298.015 | -377.259 | -378.525 | -380.384 | -367.21 | -367.846 | -365.209 | -366.246 | -366.497 | -362.007 | -360.42 | -361.383 | -360.819 | -358.948 | -356.742 | -355.482 | -331.236 | -310.467 |
| Percentage of StockholdersEquity | -10.6 | -11.1 | -11.2 | -11.8 | -12.1 | -12.4 | -10.7 | -10.8 | -11.3 | -11.9 | -12.3 | -10.4 | -9.5 | -9.7 | -9.7 | -10.1 | -9.8 | -10.3 | -10.8 | -10.6 | -10.7 | -11.0 | -11.2 | -11.2 | -11.4 | -16.6 | -17.1 | -17.4 | -17.5 | -18.2 | -18.8 | -20.4 | -30.8 | -29.4 | -29.7 | -28.4 | -29.4 | -30.1 | -30.7 | -31.3 | -32.0 | -33.4 | -34.1 | -33.1 | -33.6 | -34.7 | -35.0 | -34.0 | -34.9 |
| Percentage of Assets | -0.9 | -0.9 | -1.0 | -1.1 | -1.1 | -1.3 | -1.0 | -1.2 | -1.2 | -1.2 | -1.2 | -1.1 | -1.0 | -1.0 | -1.0 | -1.0 | -1.0 | -1.0 | -1.0 | -1.1 | -1.1 | -1.1 | -1.1 | -1.1 | -1.1 | -1.7 | -1.6 | -1.7 | -1.8 | -1.8 | -1.7 | -1.8 | -2.5 | -2.4 | -2.5 | -2.8 | -2.8 | -2.7 | -2.7 | -3.0 | -2.8 | -2.7 | -2.9 | 0.0 | 0.0 | 0.0 | -3.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:TreasuryStock | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 2492 | 2128 | 1921 | 1750 | 1613 | 1491 | 1209 | 1095 | 875 | 643 | 595 |
| Percentage of TierOneRiskBasedCapital | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 7.5 | 8.0 | 8.2 | 8.0 | 7.8 | 7.8 | 6.9 | 6.5 | 5.9 | 4.8 | 4.8 |
| Percentage of Assets umbf:UmbBank | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 2547 | 2330 | 2142 | 2041 | 1789 | 1681 | 1393 | 1285 | 926 | 823 | 738 |
| Percentage of TierOneRiskBasedCapital | 102.2 | 109.5 | 111.5 | 116.6 | 110.9 | 112.7 | 115.2 | 117.3 | 105.8 | 127.8 | 124.1 |
| Percentage of Assets | 7.7 | 8.8 | 9.2 | 9.4 | 8.7 | 8.8 | 8.0 | 7.6 | 6.2 | 6.1 | 6.0 |
| Percentage of Assets umbf:UmbFinancialCorporation | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 2492 | 2128 | 1921 | 1750 | 1613 | 1491 |
| Percentage of TierOneRiskBasedCapital | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 7.5 | 8.0 | 8.2 | 8.0 | 7.8 | 7.8 |
| Percentage of Assets umbf:UmbBank umbf:CommonEquityTierOneCapital | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 2547 | 2330 | 2142 | 2041 | 1789 | 1664 |
| Percentage of TierOneRiskBasedCapital | 102.2 | 109.5 | 111.5 | 116.6 | 110.9 | 111.6 |
| Percentage of Assets | 7.7 | 8.8 | 9.2 | 9.4 | 8.7 | 8.7 |
| Percentage of Assets umbf:UmbFinancialCorporation umbf:CommonEquityTierOneCapital | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 172 | 143 | 165 | 260 |
| Percentage of Cash | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.5 | 0.5 | 0.7 | 1.2 |
| Percentage of Assets srt:ParentCompany | 5.1 | 5.2 | 7.1 | 11.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | 5451 | 4193 | 3497 | 2019 | 2148 | 1419 | 1669 | 792 | 1275 | 1490 | 1674 | 984 | 472 | 929 | 1716 | 548 | 661 | 696 | 1063 | 710 | 625 | 599 | 819 | 1030 | 1011 | 1034 | 1787 | 1220 | 783 | 1278 | 2582 | 1940 | 999 | 1927 | 1366 | 541 | 641 | 1327 | 1459 | 571 | 1585 | 2179 | 1033 | 800 | 757 | 740 | 1229 | 887 | 806 |
| Percentage of CashAndCashEquivalentsAtCarryingValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 14.9 | 12.1 | 10.6 | 6.7 | 7.2 | 5.4 | 6.3 | 3.3 | 5.3 | 6.3 | 7.2 | 4.6 | 2.3 | 4.4 | 7.9 | 2.7 | 3.3 | 3.4 | 5.1 | 3.6 | 3.2 | 3.1 | 4.3 | 5.5 | 5.5 | 6.2 | 10.2 | 7.5 | 5.0 | 8.0 | 15.3 | 12.0 | 6.6 | 12.3 | 9.2 | 4.1 | 4.9 | 9.7 | 10.8 | 4.7 | 12.4 | 16.3 | 8.3 | 0.0 | 0.0 | 0.0 | 10.5 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 172 | 143 | 165 | 260 | 65 | 74 |
| Percentage of CashAndCashEquivalentsAtCarryingValue | 4.9 | 8.6 | 9.9 | 15.2 | 6.1 | 9.1 |
| Percentage of Assets | 0.5 | 0.5 | 0.7 | 1.2 | 0.3 | 0.4 |
| Percentage of Assets srt:ParentCompany | 5.1 | 5.2 | 7.1 | 11.3 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2017-12-31 | 2016-12-31 |
| Value | 5451 | 4193 | 3497 | 2019 | 2148 | 1419 | 1669 | 792 | 1275 | 1490 | 1674 | 984 | 1716 | 1063 |
| Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 14.9 | 12.1 | 10.6 | 6.7 | 7.2 | 5.4 | 6.3 | 3.3 | 5.3 | 6.3 | 7.2 | 4.6 | 7.9 | 5.1 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 42 | 42 | 44 | 46 | 45 | 46 | 43 | 44 | 45 | 44 | 45 |
| Percentage of Land | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 176 | 164 | 159 | 148 | 150 | 138 | 120 | 124 | 121 | 105 | 110 |
| Percentage of MachineryAndEquipmentGross | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.5 | 0.6 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.8 | 0.8 | 0.9 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 834 | 803 | 758 | 709 | 700 | 659 | 598 | 591 | 567 | 530 | 526 |
| Percentage of PropertyPlantAndEquipmentGross | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 2.5 | 3.0 | 3.2 | 3.3 | 3.4 | 3.5 | 3.4 | 3.5 | 3.8 | 3.9 | 4.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 1.157 | 1.38 | 1.601 | 1.524 | 1.658 | 1.734 | 1.593 | 1.335 | 1.251 | 1.327 | 1.332 | 1.385 | 1.485 | 1.562 | 1.641 | 1.715 | 1.924 | 2.869 | 2.928 | 2.992 | 3.145 | 3.226 | 3.283 | 3.483 | 2.569 | 2.755 | 2.974 | 3.043 | 3.074 | 3.102 | 3.164 | 3.245 | 3.354 | 3.456 | 3.547 | 3.643 | 3.733 | 3.852 | 3.913 | 4.022 | 4.159 | 4.006 | 3.458 | 3.15 | 2.442 | 2.091 |
| Percentage of AmortizationOfIntangibleAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 281 | 286 | 293 | 295 | 300 | 297 | 300 | 290 | 278 | 279 | 283 | 277 | 274 | 272 | 275 | 277 | 276 | 282 | 289 | 287 | 277 | 279 | 281 | 281 | 279 | 263 | 257 | 257 | 250 | 247 | 249 | 247 | 246 | 244 | 244 | 239 | 234 | 227 | 227 | 225 | 220 | 219 | 219 | 217 |
| Percentage of PropertyPlantAndEquipmentNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.8 | 0.8 | 0.9 | 1.0 | 1.0 | 1.1 | 1.1 | 1.2 | 1.2 | 1.2 | 1.2 | 1.3 | 1.3 | 1.3 | 1.3 | 1.4 | 1.4 | 1.4 | 1.4 | 1.5 | 1.4 | 1.4 | 1.5 | 1.5 | 1.5 | 1.6 | 1.5 | 1.6 | 1.6 | 1.6 | 1.5 | 1.5 | 1.6 | 1.6 | 1.6 | 1.8 | 1.8 | 1.7 | 1.7 | 1.9 | 1.7 | 1.6 | 1.8 | 1.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 174 | 174 | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 180 | 228 | 228 | 228 | 228 | 228 | 228 | 227 | 228 | 209 | 209 | 209 | 209 | 209 | 209 | 209 | 209 | 209 | 209 | 209 | 211 | 211 | 211 | 211 | 211 | 211 | 211 | 131 |
| Percentage of Goodwill | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.5 | 0.5 | 0.5 | 0.6 | 0.6 | 0.7 | 0.7 | 0.7 | 0.8 | 0.8 | 0.8 | 0.8 | 0.9 | 0.9 | 0.8 | 0.9 | 0.9 | 1.1 | 1.1 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.3 | 1.2 | 1.3 | 1.3 | 1.3 | 1.2 | 1.3 | 1.4 | 1.3 | 1.4 | 1.6 | 1.6 | 1.5 | 1.6 | 1.7 | 1.7 | 1.6 | 1.7 | 1.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2018-12-31 |
| Value | 63 | 63 | 70 | 70 | 70 | 70 | 70 | 70 |
| Percentage of Goodwill | 36.5 | 36.5 | 38.8 | 38.8 | 38.8 | 38.8 | 38.8 | 38.8 |
| Percentage of Assets | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 |
| Percentage of Assets umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 16 | 17 | 21 | 22 | 24 | 25 | 27 | 17 | 12 | 13 | 15 | 16 | 17 | 18 | 20 | 23 | 24 | 31 | 34 | 37 | 40 | 43 | 46 | 50 | 53 | 41 | 43 | 46 | 49 | 52 | 55 | 58 | 61 | 65 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 92 |
| Percentage of FiniteLivedIntangibleAssetsNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 | 0.7 | 0.7 | 0.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 0.792 | 1.003 | 1.313 | 1.696 | 2.028 | 2.452 | 2.919 | 3.386 | 3.87 | 4.444 | 5.061 | 5.684 | 6.331 | 7.069 | 7.85 | 8.635 | 8.849 | 7.67 | 8.487 | 9.309 | 10 | 11 | 2.884 | 3.082 | 3.311 | 3.543 | 3.776 | 4.013 | 4.28 | 4.551 | 4.823 | 5.098 | 5.404 | 5.715 | 6.094 | 6.513 | 6.962 | 7.415 | 7.868 | 8.325 | 8.813 | 9.797 |
| Percentage of FiniteLivedIntangibleAssetsNet | 4.8 | 5.6 | 6.2 | 7.5 | 8.4 | 9.5 | 10.6 | 19.7 | 31.1 | 32.5 | 33.7 | 34.8 | 36.8 | 37.8 | 38.8 | 36.8 | 36.0 | 24.3 | 24.6 | 24.9 | 25.1 | 25.5 | 6.2 | 6.2 | 6.2 | 8.6 | 8.6 | 8.5 | 8.6 | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.9 | 9.0 | 9.1 | 9.2 | 9.3 | 9.4 | 9.6 | 10.6 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Percentage of Assets us-gaap:CoreDeposits | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2010-12-31 |
| Value | 15 | 16 | 19 | 20 | 22 | 23 | 24 | 13 | 8.555 | 9.232 | 9.942 | 10 | 10 | 11 | 12 | 14 | 15 | 23 | 25 | 27 | 29 | 31 | 31 | 33 | 35 | 37 | 39 | 42 | 44 | 47 | 49 | 52 | 55 | 58 | 61 | 64 | 68 | 71 | 74 | 78 | 81 | 80 |
| Percentage of FiniteLivedIntangibleAssetsNet | 95.2 | 94.4 | 93.8 | 92.5 | 91.6 | 90.5 | 89.4 | 80.3 | 68.9 | 67.5 | 66.3 | 65.2 | 63.2 | 62.2 | 61.2 | 63.2 | 64.0 | 75.1 | 74.3 | 73.6 | 73.1 | 72.5 | 66.4 | 66.0 | 65.3 | 90.0 | 90.0 | 90.0 | 89.9 | 89.8 | 89.8 | 89.7 | 89.7 | 89.6 | 89.5 | 89.3 | 89.2 | 89.0 | 88.8 | 88.6 | 88.4 | 86.9 |
| Percentage of Assets | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 | 0.6 |
| Percentage of Assets us-gaap:CustomerRelationships | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 63 | 66 | 68 | 65 | 64 |
| Percentage of OperatingLeaseRightOfUseAsset | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 901 | 756 | 764 | 718 | 682 | 675 | 596 | 620 | 576 | 570 | 515 | 516 | 508 | 458 | 438 | 655 | 436 | 424 | 425 | 383 | 380 | 360 | 373 | 343 | 163 | 238 | 132 | 116 | 120 | 150 | 118 | 183 | 120 | 128 | 102 | 98 | 101 | 106 | 89 | 90 | 94 | 82 | 99 | 85 |
| Percentage of OtherAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 2.5 | 2.2 | 2.3 | 2.4 | 2.3 | 2.6 | 2.2 | 2.6 | 2.4 | 2.4 | 2.2 | 2.4 | 2.5 | 2.2 | 2.0 | 3.2 | 2.1 | 2.1 | 2.1 | 1.9 | 1.9 | 1.9 | 2.0 | 1.8 | 0.9 | 1.4 | 0.8 | 0.7 | 0.8 | 0.9 | 0.7 | 1.1 | 0.8 | 0.8 | 0.7 | 0.7 | 0.8 | 0.8 | 0.7 | 0.7 | 0.7 | 0.6 | 0.8 | 0.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 270 | 270 | 269 | 269 | 70 | 121 | 97 | 86 | 88 | 81 | 82 | 78 | 78 | 78 | 79 | 76 | 76 | 76 | 76 | 75 | 85 | 85 | 86 | 83 | 88 | 7.6 | 8.81 | 7.067 | 5.745 | 5.815 | 5.055 | 5.13 | 4.063 | 4.393 | 5.879 | 5.632 | 5.26 | 5.423 | 6.529 | 7.841 | 7.545 | 7.718 | 8.884 | 25 |
| Percentage of LongTermDebt | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.7 | 0.8 | 0.8 | 0.9 | 0.2 | 0.5 | 0.4 | 0.4 | 0.4 | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.5 | 0.4 | 0.5 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 269 | 70 | 69 | 68 |
| Percentage of LongTermDebt | 100.0 | 72.2 | 83.9 | 86.1 |
| Percentage of Assets | 0.8 | 0.3 | 0.3 | 0.3 |
| Percentage of Assets srt:ParentCompany | 8.0 | 2.6 | 3.0 | 3.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 17 | 17 | 16 | 16 | 16 | 16 |
| Percentage of LongTermDebt | 6.5 | 17.6 | 20.5 | 21.0 | 21.3 | 18.7 |
| Percentage of Assets | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Percentage of Assets umbf:MarquetteCapitalTrustI | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 18 | 17 | 17 | 17 | 17 | 16 |
| Percentage of LongTermDebt | 6.7 | 18.3 | 21.2 | 21.8 | 22.2 | 19.5 |
| Percentage of Assets | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Percentage of Assets umbf:MarquetteCapitalTrustII | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 7.139 | 7.008 | 6.906 | 6.804 | 6.705 | 6.598 |
| Percentage of LongTermDebt | 2.6 | 7.2 | 8.4 | 8.6 | 8.7 | 7.7 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets umbf:MarquetteCapitalTrustIII | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 28 | 28 | 27 | 27 | 27 | 26 |
| Percentage of LongTermDebt | 10.7 | 29.1 | 33.8 | 34.8 | 35.4 | 31.1 |
| Percentage of Assets | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Percentage of Assets umbf:MarquetteCapitalTrustIV | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 |
| Value | 197 |
| Percentage of LongTermDebt | 73.4 |
| Percentage of Assets | 0.6 |
| Percentage of Assets us-gaap:SubordinatedDebt | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 |
| Value | 289 | 293 | 299 | 300 | 71 | 137 | 97 | 87 | 88 | 81 | 82 | 78 | 78 | 78 | 79 | 76 | 76 | 74 | 77 | 75 | 85 | 85 | 86 | 83 | 90 | 7.9 | 9.1 | 7.3 | 5.9 | 6.0 | 4.5 |
| Percentage of LongTermDebt | 107.2 | 108.6 | 111.2 | 111.7 | 100.5 | 112.7 | 100.3 | 100.3 | 100.3 | 100.3 | 100.2 | 100.3 | 100.4 | 100.3 | 100.3 | 100.3 | 100.3 | 97.7 | 100.3 | 100.5 | 100.7 | 100.5 | 100.4 | 100.3 | 102.2 | 103.9 | 103.3 | 103.3 | 102.7 | 103.2 | 89.0 |
| Percentage of Assets | 0.8 | 0.8 | 0.9 | 1.0 | 0.2 | 0.5 | 0.4 | 0.4 | 0.4 | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:FairValueInputsLevel2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 289 | 293 | 299 | 300 | 71 | 137 | 97 | 87 | 88 | 81 | 82 | 78 | 78 | 78 | 79 | 76 | 76 | 74 | 77 | 86 |
| Percentage of LongTermDebt | 107.2 | 108.6 | 111.2 | 111.7 | 100.5 | 112.7 | 100.3 | 100.3 | 100.3 | 100.3 | 100.2 | 100.3 | 100.4 | 100.3 | 100.3 | 100.3 | 100.3 | 97.7 | 100.3 | 100.4 |
| Percentage of Assets | 0.8 | 0.8 | 0.9 | 1.0 | 0.2 | 0.5 | 0.4 | 0.4 | 0.4 | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.5 |
| Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 |
| Value | 11 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo | 100.0 |
| Percentage of Assets | 0.0 |
| Period End | 2020-12-31 |
| Value | 9796000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree | 100.0 |
| Percentage of Assets | 0.0 |
| Period End | 2020-12-31 |
| Value | 8715000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour | 100.0 |
| Percentage of Assets | 0.0 |
| Period End | 2020-12-31 |
| Value | 7806000.0 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive | 100.0 |
| Percentage of Assets | 0.0 |
| Period End | 2020-12-31 |
| Value | 30 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive | 100.0 |
| Percentage of Assets | 0.1 |
| Period End | 2020-12-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 71 | 73 | 74 | 70 | 69 |
| Percentage of OperatingLeaseLiability | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 |
| Period End | 2020-12-31 |
| Value | 81 |
| Percentage of LesseeOperatingLeaseLiabilityPaymentsDue | 100.0 |
| Percentage of Assets | 0.2 |
| Period End | 2020-12-31 |
| Value | 9466000.0 |
| Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount | 100.0 |
| Percentage of Assets | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | 3090 | 2958 | 3016 | 2854 | 2777 | 2663 | 2606 | 2563 | 2477 | 2350 | 2228 | 2203 | 2201 | 2167 | 2181 | 2101 | 2071 | 2010 | 1962 | 2024 | 2002 | 1947 | 1893 | 1900 | 1857 | 1682 | 1643 | 1615 | 1601 | 1542 | 1506 | 1463 | 1226 | 1285 | 1279 | 1294 | 1251 | 1212 | 1191 | 1170 | 1132 | 1078 | 1060 | 1090 | 1068 | 1029 | 1015 | 974 | 890 |
| Percentage of StockholdersEquity | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 8.4 | 8.5 | 9.1 | 9.4 | 9.3 | 10.1 | 9.8 | 10.6 | 10.3 | 10.0 | 9.5 | 10.3 | 10.7 | 10.3 | 10.0 | 10.4 | 10.2 | 9.8 | 9.5 | 10.3 | 10.1 | 10.1 | 9.9 | 10.2 | 10.1 | 10.1 | 9.4 | 9.9 | 10.3 | 9.7 | 8.9 | 9.0 | 8.0 | 8.2 | 8.6 | 9.7 | 9.5 | 8.9 | 8.8 | 9.6 | 8.9 | 8.1 | 8.6 | 0.0 | 0.0 | 0.0 | 8.7 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 3016 | 2606 | 2228 | 2181 |
| Percentage of StockholdersEquity | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 9.1 | 9.8 | 9.5 | 10.0 |
| Percentage of Assets srt:ParentCompany | 89.9 | 95.3 | 95.1 | 94.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | 223 | 169 | 318 | 299 | 284 | 219 | 83 | 96 | 62 | -17.639 | -95.782 | -155.641 | -128.959 | -117.391 | -45.525 | -22.668 | -23.625 | -44.159 | -57.542 | 42 | 55 | 32 | -3.718 | 26 | -2.141 | 26 | 11 | 1.827 | 16 | -13.297 | -32.64 | -15.678 | -22.227 | 63 | 85 | 101 | 81 | 63 | 81 | 77 | 55 | 19 | 25 | 67 | 60 | 36 | 40 | 41 | 12 |
| Percentage of StockholdersEquity | 7.2 | 5.7 | 10.6 | 10.5 | 10.2 | 8.2 | 3.2 | 3.7 | 2.5 | -0.8 | -4.3 | -7.1 | -5.9 | -5.4 | -2.1 | -1.1 | -1.1 | -2.2 | -2.9 | 2.1 | 2.8 | 1.7 | -0.2 | 1.4 | -0.1 | 1.6 | 0.7 | 0.1 | 1.1 | -0.9 | -2.2 | -1.1 | -1.8 | 4.9 | 6.7 | 7.8 | 6.5 | 5.3 | 6.8 | 6.6 | 4.9 | 1.8 | 2.4 | 6.2 | 5.7 | 3.6 | 4.0 | 4.2 | 1.4 |
| Percentage of Assets | 0.6 | 0.5 | 1.0 | 1.0 | 1.0 | 0.8 | 0.3 | 0.4 | 0.3 | -0.1 | -0.4 | -0.7 | -0.6 | -0.6 | -0.2 | -0.1 | -0.1 | -0.2 | -0.3 | 0.2 | 0.3 | 0.2 | -0.0 | 0.1 | -0.0 | 0.2 | 0.1 | 0.0 | 0.1 | -0.1 | -0.2 | -0.1 | -0.1 | 0.4 | 0.6 | 0.8 | 0.6 | 0.5 | 0.6 | 0.6 | 0.4 | 0.1 | 0.2 | 0.0 | 0.0 | 0.0 | 0.3 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | 1098 | 1093 | 1090 | 1085 | 1081 | 1073 | 1073 | 1069 | 1065 | 1060 | 1054 | 1054 | 1050 | 1046 | 1046 | 1042 | 1037 | 1033 | 1033 | 1028 | 1023 | 1017 | 1019 | 1015 | 1009 | 892 | 894 | 891 | 887 | 883 | 882 | 862 | 736 | 732 | 732 | 730 | 726 | 722 | 723 | 721 | 719 | 718 | 718 | 716 | 715 | 713 | 712 | 707 | 702 |
| Percentage of StockholdersEquity | 35.5 | 37.0 | 36.1 | 38.0 | 38.9 | 40.3 | 41.2 | 41.7 | 43.0 | 45.1 | 47.3 | 47.9 | 47.7 | 48.3 | 48.0 | 49.6 | 50.1 | 51.4 | 52.7 | 50.8 | 51.1 | 52.2 | 53.9 | 53.4 | 54.4 | 53.1 | 54.4 | 55.2 | 55.4 | 57.3 | 58.6 | 58.9 | 60.0 | 57.0 | 57.2 | 56.4 | 58.0 | 59.6 | 60.7 | 61.7 | 63.5 | 66.6 | 67.7 | 65.7 | 66.9 | 69.3 | 70.2 | 72.6 | 78.9 |
| Percentage of Assets | 3.0 | 3.2 | 3.3 | 3.6 | 3.6 | 4.1 | 4.0 | 4.4 | 4.4 | 4.5 | 4.5 | 4.9 | 5.1 | 5.0 | 4.8 | 5.1 | 5.1 | 5.0 | 5.0 | 5.2 | 5.2 | 5.3 | 5.3 | 5.5 | 5.5 | 5.3 | 5.1 | 5.5 | 5.7 | 5.5 | 5.2 | 5.3 | 4.8 | 4.7 | 4.9 | 5.5 | 5.5 | 5.3 | 5.3 | 5.9 | 5.6 | 5.4 | 5.8 | 0.0 | 0.0 | 0.0 | 6.1 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AdditionalPaidInCapital | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | 2040 | 1968 | 1891 | 1750 | 1692 | 1646 | 1672 | 1621 | 1573 | 1531 | 1488 | 1477 | 1434 | 1393 | 1338 | 1239 | 1204 | 1174 | 1142 | 1112 | 1083 | 1058 | 1033 | 1016 | 1005 | 986 | 963 | 947 | 922 | 897 | 884 | 860 | 834 | 813 | 787 | 774 | 756 | 735 | 697 | 682 | 664 | 646 | 623 | 612 | 596 | 581 | 562 | 502 | 430 |
| Percentage of StockholdersEquity | 66.0 | 66.5 | 62.7 | 61.3 | 60.9 | 61.8 | 64.2 | 63.2 | 63.5 | 65.1 | 66.8 | 67.1 | 65.1 | 64.3 | 61.3 | 59.0 | 58.2 | 58.4 | 58.2 | 55.0 | 54.1 | 54.3 | 54.6 | 53.5 | 54.1 | 58.7 | 58.6 | 58.7 | 57.6 | 58.2 | 58.7 | 58.8 | 68.0 | 63.3 | 61.5 | 59.9 | 60.5 | 60.7 | 58.6 | 58.4 | 58.7 | 59.9 | 58.8 | 56.2 | 55.9 | 56.5 | 55.4 | 51.5 | 48.4 |
| Percentage of Assets | 5.6 | 5.7 | 5.7 | 5.8 | 5.7 | 6.3 | 6.3 | 6.7 | 6.6 | 6.5 | 6.4 | 6.9 | 7.0 | 6.6 | 6.1 | 6.1 | 5.9 | 5.7 | 5.5 | 5.6 | 5.5 | 5.5 | 5.4 | 5.5 | 5.5 | 5.9 | 5.5 | 5.8 | 5.9 | 5.6 | 5.2 | 5.3 | 5.5 | 5.2 | 5.3 | 5.8 | 5.7 | 5.4 | 5.2 | 5.6 | 5.2 | 4.8 | 5.0 | 0.0 | 0.0 | 0.0 | 4.8 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:RetainedEarnings | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 | 2009-12-31 | 2008-12-31 | 2007-12-31 |
| Value | -326.193 | -328.0 | -338.145 | -335.744 | -335.926 | -330.846 | -277.999 | -277.92 | -278.771 | -278.601 | -273.827 | -228.485 | -209.288 | -210.438 | -212.206 | -212.733 | -202.647 | -207.832 | -211.437 | -214.423 | -214.095 | -215.117 | -211.524 | -212.319 | -211.388 | -279.072 | -280.818 | -280.552 | -279.97 | -280.583 | -283.389 | -298.015 | -377.259 | -378.525 | -380.384 | -367.21 | -367.846 | -365.209 | -366.246 | -366.497 | -362.007 | -360.42 | -361.383 | -360.819 | -358.948 | -356.742 | -355.482 | -331.236 | -310.467 |
| Percentage of StockholdersEquity | -10.6 | -11.1 | -11.2 | -11.8 | -12.1 | -12.4 | -10.7 | -10.8 | -11.3 | -11.9 | -12.3 | -10.4 | -9.5 | -9.7 | -9.7 | -10.1 | -9.8 | -10.3 | -10.8 | -10.6 | -10.7 | -11.0 | -11.2 | -11.2 | -11.4 | -16.6 | -17.1 | -17.4 | -17.5 | -18.2 | -18.8 | -20.4 | -30.8 | -29.4 | -29.7 | -28.4 | -29.4 | -30.1 | -30.7 | -31.3 | -32.0 | -33.4 | -34.1 | -33.1 | -33.6 | -34.7 | -35.0 | -34.0 | -34.9 |
| Percentage of Assets | -0.9 | -0.9 | -1.0 | -1.1 | -1.1 | -1.3 | -1.0 | -1.2 | -1.2 | -1.2 | -1.2 | -1.1 | -1.0 | -1.0 | -1.0 | -1.0 | -1.0 | -1.0 | -1.0 | -1.1 | -1.1 | -1.1 | -1.1 | -1.1 | -1.1 | -1.7 | -1.6 | -1.7 | -1.8 | -1.8 | -1.7 | -1.8 | -2.5 | -2.4 | -2.5 | -2.8 | -2.8 | -2.7 | -2.7 | -3.0 | -2.8 | -2.7 | -2.9 | 0.0 | 0.0 | 0.0 | -3.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:TreasuryStock | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2013-12-31 |
| Value | 1098 | 1093 | 1090 | 1085 | 1081 | 1073 | 1073 | 1069 | 1065 | 1060 | 1054 | 1054 | 1050 | 1046 | 1046 | 1042 | 1037 | 1033 | 1033 | 1028 | 1023 | 1017 | 1019 | 1015 | 1009 | 892 | 894 | 882 |
| Percentage of AdditionalPaidInCapitalCommonStock | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 3.0 | 3.2 | 3.3 | 3.6 | 3.6 | 4.1 | 4.0 | 4.4 | 4.4 | 4.5 | 4.5 | 4.9 | 5.1 | 5.0 | 4.8 | 5.1 | 5.1 | 5.0 | 5.0 | 5.2 | 5.2 | 5.3 | 5.3 | 5.5 | 5.5 | 5.3 | 5.1 | 5.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 2040 | 1968 | 1891 | 1750 | 1692 | 1646 | 1672 | 1621 | 1573 | 1531 | 1488 | 1477 | 1434 | 1393 | 1338 | 1239 | 1204 | 1174 | 1142 | 1112 | 1083 | 1058 | 1033 | 1016 | 1005 | 986 | 963 | 947 | 922 | 897 | 884 | 860 | 834 | 813 | 787 | 774 | 756 | 735 | 697 | 682 | 664 | 646 | 623 | 562 |
| Percentage of RetainedEarningsAccumulatedDeficit | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 5.6 | 5.7 | 5.7 | 5.8 | 5.7 | 6.3 | 6.3 | 6.7 | 6.6 | 6.5 | 6.4 | 6.9 | 7.0 | 6.6 | 6.1 | 6.1 | 5.9 | 5.7 | 5.5 | 5.6 | 5.5 | 5.5 | 5.4 | 5.5 | 5.5 | 5.9 | 5.5 | 5.8 | 5.9 | 5.6 | 5.2 | 5.3 | 5.5 | 5.2 | 5.3 | 5.8 | 5.7 | 5.4 | 5.2 | 5.6 | 5.2 | 4.8 | 5.0 | 4.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | -7.0 | -7.0 | 7.0 | -7.0 | -7.0 |
| Percentage of RetainedEarningsAccumulatedDeficit | -0.3 | -0.4 | 0.4 | -0.4 | -0.4 |
| Percentage of Assets | -0.0 | -0.0 | 0.0 | -0.0 | -0.0 |
| Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:AccountingStandardsUpdate201613 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 223 | 169 | 318 | 299 | 284 | 219 | 83 | 96 | 62 | -17.639 | -95.782 | -155.641 | -128.959 | -117.391 | -45.525 | -22.668 | -23.625 | -44.159 | -57.542 | 42 | 55 | 32 | -3.718 | 26 | -2.141 | 26 | 11 | 1.827 | 16 | -13.297 | -32.64 | -15.678 | -22.227 | 63 | 85 | 101 | 81 | 63 | 81 | 77 | 55 | 19 | 25 | 40 |
| Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.6 | 0.5 | 1.0 | 1.0 | 1.0 | 0.8 | 0.3 | 0.4 | 0.3 | -0.1 | -0.4 | -0.7 | -0.6 | -0.6 | -0.2 | -0.1 | -0.1 | -0.2 | -0.3 | 0.2 | 0.3 | 0.2 | -0.0 | 0.1 | -0.0 | 0.2 | 0.1 | 0.0 | 0.1 | -0.1 | -0.2 | -0.1 | -0.1 | 0.4 | 0.6 | 0.8 | 0.6 | 0.5 | 0.6 | 0.6 | 0.4 | 0.1 | 0.2 | 0.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 326 | 328 | 338 | 335 | 335 | 330 | 277 | 277 | 278 | 278 | 273 | 228 | 209 | 210 | 212 | 212 | 202 | 207 | 211 | 214 | 214 | 215 | 211 | 212 | 211 | 279 | 280 | 280 | 279 | 280 | 283 | 298 | 377 | 378 | 380 | 367 | 367 | 365 | 366 | 366 | 362 | 360 | 361 | 355 |
| Percentage of TreasuryStockValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.9 | 0.9 | 1.0 | 1.1 | 1.1 | 1.3 | 1.0 | 1.2 | 1.2 | 1.2 | 1.2 | 1.1 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.7 | 1.6 | 1.7 | 1.8 | 1.8 | 1.7 | 1.8 | 2.5 | 2.4 | 2.5 | 2.8 | 2.8 | 2.7 | 2.7 | 3.0 | 2.8 | 2.7 | 2.9 | 3.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 4.152 | 4.457 | 4.678 | 3.725 | 3.292 | 2.817 | 3.316 | 3.912 | 3.717 | 3.289 | 2.11 | 3.268 | 2.931 | 2.27 | 3.268 | 3.333 | 3.382 | 2.861 | 3.053 | 3.053 | 2.853 | 2.347 | 1.262 | 3.251 | 3.17 | 2.609 | 1.948 | 2.491 | 2.521 | 2.212 | 1.617 | 2.223 | 2.183 | 1.913 | 1.492 | 1.86 | 1.853 | 1.712 | 1.546 | 1.702 | 1.709 | 1.553 | 1.555 | 1.516 | 1.472 | 1.41 |
| Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 4.152 | 4.457 | 4.678 | 3.725 | 3.292 | 2.817 | 3.316 | 3.912 | 3.717 | 3.289 | 2.11 | 3.268 | 2.931 | 2.27 | 3.268 | 3.333 | 3.382 | 2.861 | 3.053 | 3.053 | 2.853 | 2.347 | 1.262 | 3.251 | 3.17 | 2.609 | 1.948 | 2.491 | 2.521 | 2.212 | 1.617 | 2.223 | 2.183 | 1.913 | 1.492 | 1.86 | 1.853 | 1.712 | 1.546 | 1.702 | 1.709 | 1.553 | 1.555 | 1.516 | 1.472 | 1.41 |
| Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of Assets us-gaap:AdditionalPaidInCapital | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 61 | 115 | 157 | 113 | 92 | 9.358 | 150 | 56 | 87 | 46 | 73 | 125 | 79 | 19 | 82 | 125 | 102 | 16 | 126 | 87 | 102 | 71 | 86 | 35 | 46 | 81 | 84 | 10 | 80 | 14 | 47 | 71 | 41 | 46 | 46 | 45 |
| Percentage of NetCashProvidedByUsedInOperatingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 28.8 | 56.3 | 76.2 | 57.8 | 47.9 | 4.4 | 69.9 | 25.8 | 40.5 | 21.9 | 36.0 | 67.7 | 44.9 | 11.7 | 50.4 | 79.2 | 67.8 | 11.5 | 91.1 | 66.1 | 114.5 | 79.9 | 100.4 | 42.1 | 55.2 | 96.4 | 99.5 | 12.0 | 93.8 | 16.5 | 54.4 | 83.3 | 47.4 | 53.0 | 54.1 | 53.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | -581.141 | -1086.59 | -1347.192 | -670.012 | -2705.006 | 231 | -1670.01 | -514.968 | -544.92 | -270.531 | -1210.273 | -457.246 | -3.019 | -79.755 | -332.049 | -89.508 | 171 | -228.433 | -794.391 | 61 | -110.176 | -6.196 | -667.244 | -237.232 | -839.835 | -208.281 | -241.16 | -252.255 | -548.971 | -331.177 | 8.859 | 148 | -886.234 | -205.345 | -301.659 | 414 |
| Percentage of NetCashProvidedByUsedInInvestingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | -273.3 | -527.5 | -649.9 | -340.1 | -1403.2 | 109.3 | -773.8 | -235.0 | -251.5 | -128.0 | -597.0 | -247.0 | -1.7 | -47.6 | -203.6 | -56.7 | 113.4 | -157.9 | -571.5 | 46.3 | -123.6 | -7.0 | -774.0 | -282.7 | -992.4 | -245.1 | -282.6 | -297.7 | -642.0 | -386.8 | 10.2 | 173.2 | -1021.2 | -236.3 | -347.8 | 480.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 1777 | 1666 | 2667 | 426 | 3342 | -490.397 | 2395 | -24.239 | 242 | 40 | 1826 | 844 | -533.208 | -726.672 | 1417 | -148.869 | -309.071 | -155.572 | 1021 | -63.737 | 650 | 876 | -347.975 | 763 | 1618 | 26 | -529.527 | 109 | 1357 | -697.623 | -650.048 | 925 | 1078 | 202 | 272 | -949.309 |
| Percentage of NetCashProvidedByUsedInFinancingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 836.1 | 809.1 | 1286.9 | 216.6 | 1733.7 | -232.0 | 1109.9 | -11.1 | 112.0 | 19.1 | 901.1 | 456.1 | -302.1 | -433.4 | 869.2 | -94.3 | -204.4 | -107.5 | 734.5 | -48.3 | 729.6 | 983.2 | -403.6 | 909.8 | 1912.1 | 31.0 | -620.4 | 129.4 | 1587.3 | -814.8 | -751.1 | 1076.8 | 1242.6 | 232.5 | 313.7 | -1102.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 |
| Value | 1258 | 695 | 1478 | -129.36 | 729 | -249.916 | 876 | -482.662 | -214.538 | -183.963 | 689 |
| Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 591.7 | 337.9 | 713.2 | -65.7 | 378.4 | -118.2 | 406.0 | -220.3 | -99.0 | -87.1 | 340.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 112000.0 | 113000.0 | 112000.0 |
| Percentage of AmortizationOfFinancingCosts | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | -9.421 | 10 | -5.856 | -11.134 | 58 | 3.292 | -1.415 | -0.322 | 1.845 | -1.754 | 4.082 | -1.417 | 1.428 | -3.699 | -1.054 | -1.523 | -5.547 | -1.548 | -1.539 | -2.822 | 0.169 | -2.489 | -0.212 | -2.591 | 2.266 | 0.533 | 2.198 | -1.322 | 3.543 | -1.282 | -2.104 | -0.354 | -3.877 | -3.387 | -2.875 | -3.087 |
| Percentage of DeferredIncomeTaxExpenseBenefit | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 82 | -78.096 | 0.919 | 17 | 30 | 79 | -7.366 | 56 | 26 | 36 | 44 | -15.666 | -1.247 | -8.345 | -37.552 | -7.304 | 14 | 5.533 | -18.508 | 5.184 | 11 | -2.025 | 19 | 15 | -16.481 | 3.834 | 15 | -10.508 | -11.043 | 25 | -2.586 | 0.371 | 24 | -11.79 | 2.491 | 4.199 | -4.963 | 19 | -10.915 | 18 | 9.36 | -16.385 | -12.834 | -2.883 | -4.17 | 5.423 |
| Percentage of IncreaseDecreaseInOtherOperatingCapitalNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 61 | 115 | 157 | 113 | 92 | 9.358 | 150 | 56 | 87 | 46 | 73 | 125 | 79 | 19 | 82 | 125 | 102 | 16 | 126 | 87 | 102 | 71 | 86 | 35 | 46 | 81 | 84 | 10 | 80 | 14 | 47 | 71 | 41 | 46 | 46 | 45 |
| Percentage of NetCashProvidedByUsedInOperatingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 28.8 | 56.3 | 76.2 | 57.8 | 47.9 | 4.4 | 69.9 | 25.8 | 40.5 | 21.9 | 36.0 | 67.7 | 44.9 | 11.7 | 50.4 | 79.2 | 67.8 | 11.5 | 91.1 | 66.1 | 114.5 | 79.9 | 100.4 | 42.1 | 55.2 | 96.4 | 99.5 | 12.0 | 93.8 | 16.5 | 54.4 | 83.3 | 47.4 | 53.0 | 54.1 | 53.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 87 | 92 | 156 | 73 | 60 | -3.439 | 66 | 62 | 56 | 57 | 25 | 57 | 55 | 56 | 111 | 48 | 42 | 44 | 42 | 41 | 37 | 36 | 29 | 22 | 30 | 33 | 26 | 35 | 34 | 23 | 34 | 34 | 29 | 34 | 21 | 26 | 29 | 46 | 23 | 26 | 26 | 30 | 19 | 22 | 23 | 26 |
| Percentage of NetIncomeLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 41.1 | 45.0 | 75.4 | 37.1 | 31.4 | -1.6 | 30.8 | 28.5 | 26.3 | 27.3 | 12.6 | 31.3 | 31.4 | 33.9 | 68.6 | 30.5 | 28.3 | 30.5 | 30.9 | 31.8 | 29.2 | 29.2 | 24.8 | 19.5 | 29.7 | 35.9 | 28.6 | 39.2 | 38.6 | 26.3 | 38.9 | 38.6 | 34.7 | 41.6 | 24.9 | 30.7 | 34.2 | 54.7 | 27.2 | 30.4 | 30.4 | 35.9 | 21.9 | 26.2 | 26.5 | 30.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 65 | 70 | 57 | 49 | -18.654 | 43 | 38 | 38 |
| Percentage of NetIncomeLoss | 75.4 | 75.7 | 78.7 | 81.2 | 542.4 | 69.6 | 67.0 | 67.1 |
| Percentage of InterestAndDividendIncomeOperating | 31.0 | 34.1 | 29.2 | 25.5 | -8.8 | 19.8 | 17.6 | 18.4 |
| Percentage of InterestAndDividendIncomeOperating umbf:CommercialBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 14 | 16 | 14 | 15 | 21 | 19 | 17 | 18 |
| Percentage of NetIncomeLoss | 16.1 | 17.4 | 19.4 | 25.3 | -617.3 | 30.6 | 31.3 | 32.1 |
| Percentage of InterestAndDividendIncomeOperating | 6.6 | 7.8 | 7.2 | 7.9 | 10.0 | 8.7 | 8.2 | 8.8 |
| Percentage of InterestAndDividendIncomeOperating umbf:InstitutionalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 7.45 | 6.388 | 1.37 | -3.944 | -6.013 | -0.164 | 0.998 | 0.431 |
| Percentage of NetIncomeLoss | 8.5 | 6.9 | 1.9 | -6.5 | 174.8 | -0.3 | 1.8 | 0.7 |
| Percentage of InterestAndDividendIncomeOperating | 3.5 | 3.1 | 0.7 | -2.0 | -2.8 | -0.1 | 0.5 | 0.2 |
| Percentage of InterestAndDividendIncomeOperating umbf:PersonalBanking | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 4.152 | 5.152 | 4.678 | 3.74 | 3.292 | 3.41 | 3.316 | 3.924 | 3.717 | 3.893 | 2.11 | 3.269 | 2.93 | 2.765 | 3.269 | 3.332 | 3.383 | 3.332 | 3.053 | 3.052 | 2.854 | 2.776 | 1.262 | 3.25 | 3.17 | 3.069 | 1.947 | 2.981 | 2.521 | 2.212 | 1.617 | 2.223 | 2.183 | 1.913 | 1.492 | 1.86 | 1.853 | 1.712 | 1.546 | 1.702 | 1.709 | 1.553 | 1.555 | 1.516 | 1.472 | 1.41 |
| Percentage of ShareBasedCompensation | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | -581.141 | -1086.59 | -1347.192 | -670.012 | -2705.006 | 231 | -1670.01 | -514.968 | -544.92 | -270.531 | -1210.273 | -457.246 | -3.019 | -79.755 | -332.049 | -89.508 | 171 | -228.433 | -794.391 | 61 | -110.176 | -6.196 | -667.244 | -237.232 | -839.835 | -208.281 | -241.16 | -252.255 | -548.971 | -331.177 | 8.859 | 148 | -886.234 | -205.345 | -301.659 | 414 |
| Percentage of NetCashProvidedByUsedInInvestingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | -273.3 | -527.5 | -649.9 | -340.1 | -1403.2 | 109.3 | -773.8 | -235.0 | -251.5 | -128.0 | -597.0 | -247.0 | -1.7 | -47.6 | -203.6 | -56.7 | 113.4 | -157.9 | -571.5 | 46.3 | -123.6 | -7.0 | -774.0 | -282.7 | -992.4 | -245.1 | -282.6 | -297.7 | -642.0 | -386.8 | 10.2 | 173.2 | -1021.2 | -236.3 | -347.8 | 480.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 9.433 | 5.958 | 13 | 11 | 17 | 17 | 24 | 24 | 12 | 10 | 21 | 14 | 13 | 8.639 | 11 | 13 | 6.338 | 4.985 | 11 | 21 | 9.027 | 8.499 | 11 | 12 | 14 | 14 | 9.571 | 15 | 12 | 6.926 | 11 | 9.608 | 9.378 | 8.011 | 12 | 11 | 13 | 6.88 | 8.777 | 11 | 8.023 | 7.187 | 12 | 9.261 | 7.398 | 3.096 |
| Percentage of PaymentsToAcquirePropertyPlantAndEquipment | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 1777 | 1666 | 2667 | 426 | 3342 | -490.397 | 2395 | -24.239 | 242 | 40 | 1826 | 844 | -533.208 | -726.672 | 1417 | -148.869 | -309.071 | -155.572 | 1021 | -63.737 | 650 | 876 | -347.975 | 763 | 1618 | 26 | -529.527 | 109 | 1357 | -697.623 | -650.048 | 925 | 1078 | 202 | 272 | -949.309 |
| Percentage of NetCashProvidedByUsedInFinancingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Percentage of InterestAndDividendIncomeOperating | 836.1 | 809.1 | 1286.9 | 216.6 | 1733.7 | -232.0 | 1109.9 | -11.1 | 112.0 | 19.1 | 901.1 | 456.1 | -302.1 | -433.4 | 869.2 | -94.3 | -204.4 | -107.5 | 734.5 | -48.3 | 729.6 | 983.2 | -403.6 | 909.8 | 1912.1 | 31.0 | -620.4 | 129.4 | 1587.3 | -814.8 | -751.1 | 1076.8 | 1242.6 | 232.5 | 313.7 | -1102.6 |
| Period End | 2020-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 |
| Value | 0.0 | 2.0 | 0.0 | 0.5 | 0.0 |
| Percentage of ProceedsFromIssuanceOfLongTermDebt | 0.0 | 100.0 | 0.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 15 | 15 | 15 | 14 | 14 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 8.747 | 8.729 | 8.526 | 8.841 | 8.32 | 8.324 | 8.302 | 8.273 | 7.874 | 7.903 | 7.751 | 7.882 | 7.485 | 7.484 | 7.477 |
| Percentage of PaymentsOfDividends | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2013-12-31 |
| Value | 15 | 15 | 15 | 14 | 14 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 |
| Percentage of Dividends | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2013-12-31 |
| Value | 15 | 15 | 15 | 14 | 14 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 |
| Percentage of Dividends | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 0.061 | 4.027 | 4.201 | 0.106 | 0.073 | 59 | 0.161 | 0.221 | 0.028 | 4.086 | 50 | 20 | 0.26 | 5.951 | 0.907 | 10 | 0.251 | 4.028 | 2.178 | 0.608 | 0.701 | 12 | 2.284 | 0.794 | 0.07 | 5.309 | 1.883 | 0.693 | 0.298 | 2.867 | 0.95 | 0.801 | 0.094 | 1.656 | 14 | 0.778 | 2.618 | 2.666 | 0.707 | 5.053 | 2.009 | 1.373 | 1.325 | 2.343 | 2.25 | 2.961 |
| Percentage of PaymentsForRepurchaseOfCommonStock | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 |
| Value | 54.89 | 53.72 | 53.16 | 52.13 | 47.1 | 45.73 | 44.03 | 40.45 | 38.97 | 38.3 |
| Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 95 | 30 | 64 | 54 | 49 | 42 | 88 | 78 | 47 |
| Percentage of DeferredTaxLiabilities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 96 | 60 | 84 | 64 | 122 | 81 | 68 | 75 | 48 | 44 | 45 |
| Percentage of DeferredTaxAssetsNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 | 2009-12-31 |
| Value | 6700000.0 | 5800000.0 | 4859000.0 | 3846000.0 | 4375000.0 | 4680000.0 | 4025000.0 | 4997000.0 | 4347000.0 | 4101000.0 | 3898000.0 | 2948000.0 |
| Percentage of UnrecognizedTaxBenefits | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 3278000.0 | 2332000.0 | 2150000.0 | 3498000.0 | 2860000.0 | 2850000.0 | 3417000.0 | 2680000.0 | 2775000.0 | 2605000.0 | 2378000.0 |
| Percentage of DeferredTaxAssetsValuationAllowance | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 |
| Value | 11 | 0.0 | 19 | 27 | 11 | 0.0 |
| Percentage of AcquisitionOfLowIncomeHousingTaxCreditInvestments | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | 34264 | 33052 | 677 | 29481 | 28136 | 26040 | 436 | 23937 | 23270 | 22854 | 296 | 20750 | 20620 | 20747 | 108 | 20313 | 20315 | 20234 | 105 | 19692 | 19436 | 19335 | 326 | 18120 | 17413 | 16832 | 78 | 15638 | 15618 | 16504 | 170 | 14924 | 14875 | 14783 | 165 | 13172 | 13202 | 13298 | 43 | 12157 | 12363 | 12606 | 153 | 11002 |
| Percentage of AverageAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 14993 | 14204 | 296 | 12957 | 12390 | 11609 | 131 | 10760 | 10651 | 10446 | 68 | 9838 | 9740 | 9785 | -6.0 | 9710 | 9842 | 9611 |
| Percentage of AverageAssets | 43.8 | 43.0 | 43.7 | 44.0 | 44.0 | 44.6 | 30.0 | 45.0 | 45.8 | 45.7 | 23.0 | 47.4 | 47.2 | 47.2 | -5.6 | 47.8 | 48.4 | 47.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 11611 | 11603 | 174 | 10019 | 9671 | 9006 | 286 | 5409 | 4821 | 4555 | 100 | 3920 | 3934 | 3826 | 165 | 3582 | 3316 | 3466 |
| Percentage of AverageAssets | 33.9 | 35.1 | 25.7 | 34.0 | 34.4 | 34.6 | 65.6 | 22.6 | 20.7 | 19.9 | 33.8 | 18.9 | 19.1 | 18.4 | 152.8 | 17.6 | 16.3 | 17.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 7660 | 7245 | 207 | 6505 | 6075 | 5425 | -8.0 | 5264 | 5353 | 5394 | 106 | 4791 | 4799 | 4982 | -73.0 | 5072 | 5293 | 5347 |
| Percentage of AverageAssets | 22.4 | 21.9 | 30.6 | 22.1 | 21.6 | 20.8 | -1.8 | 22.0 | 23.0 | 23.6 | 35.8 | 23.1 | 23.3 | 24.0 | -67.6 | 25.0 | 26.1 | 26.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 9.0 | 7.8 | 7.3 | 7.8 | 6.5 | 8.4 | 10.0 | 9.9 | 9.9 | 8.3 | 9.4 | 9.5 | 9.0 | 8.1 | 7.6 | 8.1 | 5.3 | 6.8 |
| Percentage of BankcardExpenses | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 16 | 14 | 15 | 15 | 12 | 16 | 16 | 16 | 16 | 17 |
| Percentage of BankcardFees | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 62.84 | 59.43 | 57.84 | 55.33 | 53.09 | 52.23 | 50.5 | 47.92 | 45.37 | 44.2 | 43.96 | 43.31 | 43.72 | 42.15 | 41.42 | 40.34 | 39.51 | 40.86 | 40.44 | 39.38 | 38.34 | 38.56 | 37.68 | 36.76 | 36.1 | 35.51 | 35.21 | 33.94 | 33.3 | 32.85 | 30.2 | 31.73 | 31.71 | 31.88 | 30.89 | 29.9 | 29.46 | 28.97 | 27.97 | 26.62 | 26.24 | 26.98 | 26.42 | 25.43 |
| Percentage of BookValuePerShare | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 2.592 | 3.334 | 3.918 | 4.819 | 5.753 | 9.86 | 8.839 | 8.102 | 7.077 | 7.243 |
| Percentage of BrokerageFees | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 |
| Value | 75 | -201.758 | 24 | 20 | 80 | 162 | -14.964 | 51 | 108 | 105 | 81 | -36.542 | -16.248 | -80.801 | -41.561 | 2.674 | 34 | 21 | -168.433 | -19.924 | 39 | 62 | -48.68 | 46 | -46.52 | 25 | 14 | -24.239 | 48 | 30 | -26.769 | 10 | -137.886 | -32.941 | -25.456 | 31 | 27 | -27.157 | 5.931 | 35 | 55 | -8.946 | -66.416 | 11 |
| Percentage of ChangeInUnrealizedHoldingGainsNetOfRealizedNetHoldingGains | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 |
| Value | 11 | 0.0 | 19 | 27 | 11 | 0.0 |
| Percentage of CommitmentToFundLowIncomeHousingTaxCreditInvestments | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 11 | 0.994 | -5.856 | -11.134 | -1.484 | 1.895 | -0.859 | 0.295 | 2.274 | 12 | -26.943 | -7.76 | 58 | 3.292 | -1.415 | -0.322 |
| Percentage of DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | -5417000.0 | -2862000.0 | -573000.0 | -2293000.0 |
| Percentage of EquitySecuritiesWithOutReadilyDeterminableFairValuesAdjustmentsNet | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | -8.738 | 13 |
| Percentage of EquitySecuritiesWithReadilyDeterminableFairValuesAdjustmentsNet | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | 1771000.0 | 1721000.0 | 1932000.0 | 2059000.0 | 1407000.0 |
| Percentage of GainLossReclassifiedFromAccumulatedOtherComprehensiveIncomeIntoEarningsIncludedComponentBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | -333000.0 | -324000.0 | -329000.0 | -320000.0 | -257000.0 | -132000.0 | -84000.0 | -50000.0 | -20000.0 | 5000.0 |
| Percentage of GainLossReclassifiedFromAccumulatedOtherComprehensiveIncomeIntoEarningsIncludedComponentBeforeTax | -18.8 | -18.8 | -17.0 | -15.5 | -18.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 1438000.0 | 1397000.0 | 1603000.0 | 1739000.0 | 1150000.0 | -132000.0 | -84000.0 | -50000.0 | -20000.0 | 5000.0 |
| Percentage of GainLossReclassifiedFromAccumulatedOtherComprehensiveIncomeIntoEarningsIncludedComponentBeforeTax | 81.2 | 81.2 | 83.0 | 84.5 | 81.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 |
| Value | 0.0 | -0.576 | 6.197 | 29 | -0.079 | -4.166 |
| Percentage of GainLossRecognizedInOtherComprehensiveIncomeIncludedComponentOnDerivativeBeforeReclassificationAndTax | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | -3.422 | 6.503 | 1.964 | 1.109 | -0.075 | -10.409 | 2.945 | -3.836 | -3.061 | -2.088 |
| Percentage of GainLossRecognizedInOtherComprehensiveIncomeIncludedComponentOnDerivativeBeforeReclassificationAndTax | 0.0 | 0.0 | 0.0 | -192.5 | -1.2 | -35.5 | -3727.8 | 92.1 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | -3.422 | 6.503 | 1.964 | 0.533 | 6.122 | 18 | 2.866 | -8.002 | -3.061 | -2.088 |
| Percentage of GainLossRecognizedInOtherComprehensiveIncomeIncludedComponentOnDerivativeBeforeReclassificationAndTax | 0.0 | 0.0 | 0.0 | -92.5 | 98.8 | 64.5 | -3627.8 | 192.1 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 |
| Value | 1753 | 1441 | 2123 | 384 | 3476 | -186.38 | 2034 | -52.452 | -71.792 | 332 | 1448 |
| Percentage of IncreaseDecreaseInDemandAndSavingsDeposits | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-03-31 | 2014-12-31 |
| Value | 9.656 | 9.35 | -16.18 | -3.011 | -9.196 | 17 | -41.509 | 2.646 | 27 | -4.507 | -19.694 | 14 | 1.114 | 13 | -6.875 | -1.529 | -16.069 | 35 | -18.215 | 3.344 | 30 | -3.219 | 0.247 | 1.335 | -9.073 |
| Percentage of IncreaseDecreaseInTradingSecuritiesAndOtherEarningAssets | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 189000.0 | 159000.0 | 202000.0 | 259000.0 | 312000.0 | 654000.0 | 504000.0 | 425000.0 | 842000.0 | 434000.0 | 581000.0 | 428000.0 | 709000.0 | 430000.0 |
| Percentage of InterestAndDividendIncomeOnTradingSecurities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 |
| Value | -3210000.0 | -3180000.0 | -2936000.0 | -1619000.0 | -1347000.0 | -1357000.0 | -1130000.0 | -1386000.0 | -1385000.0 | -1341000.0 | -956000.0 | -1291000.0 | -1254000.0 | -1176000.0 | -766000.0 | -1045000.0 | -988000.0 | -940000.0 | -661000.0 | -753000.0 | -925000.0 | -909000.0 | -929000.0 | -1044000.0 | -532000.0 | -55000.0 | 95000.0 | 82000.0 |
| Percentage of InterestIncomeExpenseOther | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | -134000.0 | -117000.0 | -99000.0 | 275000.0 | -80000.0 | 138000.0 | -138000.0 | -135000.0 | 205000.0 | 9000.0 | 174000.0 | 10000.0 |
| Percentage of NetAmortizationAccretionOfPremiumsAndDiscountsFromAcquisition | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 9030000.0 |
| Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption | 0.0 | 0.0 | 0.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 3677000.0 |
| Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption | 0.0 | 0.0 | 0.0 | 40.7 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 152000.0 |
| Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption | 0.0 | 0.0 | 0.0 | 1.7 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 914000.0 |
| Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption | 0.0 | 0.0 | 0.0 | 10.1 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 3120000.0 |
| Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption | 0.0 | 0.0 | 0.0 | 34.6 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 62000.0 |
| Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption | 0.0 | 0.0 | 0.0 | 0.7 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 5910000.0 |
| Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption | 0.0 | 0.0 | 0.0 | 65.4 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 148000.0 |
| Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption | 0.0 | 0.0 | 0.0 | 1.6 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 926000.0 |
| Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption | 0.0 | 0.0 | 0.0 | 10.3 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0 | 0 | 0 | 31000.0 |
| Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoption | 0.0 | 0.0 | 0.0 | 0.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 4.529 | 4.956 | 4.711 | 4.834 | 4.549 | 4.86 | 4.061 | 4.643 | 4.701 | 4.345 | 4.316 | 4.407 | 4.165 | 4.626 | 4.405 | 5.13 | 5.033 | 4.903 | 4.558 | 5.015 | 5.369 | 5.815 | 5.301 | 5.266 | 4.953 | 4.768 | 6.812 | 4.097 | 4.997 | 3.688 | 4.564 | 4.561 | 4.709 | 4.547 | 4.582 | 4.7 | 4.63 | 4.242 | 3.528 | 4.001 | 4.219 | 3.852 | 4.872 | 4.292 | 4.36 | 3.19 |
| Percentage of NoninterestExpensePaymentProcessing | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 |
| Value | 4.522 | 1.173 | 35 | 1.756 | 1.443 | 4.039 | 1.579 | 1.884 |
| Percentage of PaymentOnLowIncomeHousingTaxCreditInvestmentCommitments | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0.282 | 0.226 |
| Percentage of PaymentsToAcquireEquitySecuritiesWithReadilyDeterminableFairValues | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 4.784 | 7.144 | 3.132 | 1.081 |
| Percentage of PaymentsToAcquireEquitySecuritiesWithoutReadilyDeterminableFairValues | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2018-12-31 |
| Value | -1.808 | -16.623 | 0.0 | 0.0 | 0.0 | -0.024 | 12 | 11 |
| Percentage of PaymentsToProceedsFromAcquisitionAndDivestitures | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 |
| Value | 0 |
| Percentage of PostClosingPurchaseAdjustment | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 |
| Value | 0.322 | 2.177 | 3.067 | 3.725 |
| Percentage of ProceedsFromEquitySecuritiesRepaymentsAndCallsWithoutReadilyDeterminableFairValues | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 2.188 | 12 | 2.197 | 0.21 | 0.325 | 2.454 | 1.02 | 1.357 | 0.812 | 1.448 | 2.438 | 1.881 | 2.467 | 5.532 | 2.238 | 0.796 | 6.726 | 4.107 |
| Percentage of ProceedsFromExerciseOfStockOptionsAndSalesOfTreasuryShare | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 2.769 | 2.546 | 2.393 | 2.309 | 3.211 | 2.366 | 2.94 | 2.749 | 2.91 | 2.89 | 2.681 | 3.337 | 3.772 | 2.905 | 3.825 | 3.798 | 4.071 | 3.833 | 3.687 | 3.37 | 3.692 | 3.429 | 3.32 | 3.176 | 2.873 | 2.756 | 2.643 | 2.577 | 2.709 | 2.516 | 2.063 | 2.67 | 2.484 | 1.911 | 2.351 | 2.363 | 2.314 | 2.419 | 2.154 | 2.13 | 2.394 | 3.716 | 3.474 | 3.219 | 3.516 | 3.238 |
| Percentage of RegulatoryAssessments | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | -6349000.0 |
| Percentage of SaleOfComponentOfBusinessSegment | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | -6349000.0 |
| Percentage of SaleOfComponentOfBusinessSegment | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 22 | 21 | 20 | 19 | 19 | 25 | 20 | 20 | 20 | 21 |
| Percentage of ServiceChargesOnDepositAccounts | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 53 | 54 | 50 | 50 | 46 | 47 | 46 | 45 | 42 | 41 |
| Percentage of TrustAndSecuritiesProcessingIncome | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | -0.9 | 12 | -1.0 |
| Percentage of UnrealizedGainLossOnInterestRateCashFlowHedgesNetOfTaxAccumulatedOtherComprehensiveIncomeLoss | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | -14497000.0 | -14876000.0 | -12245000.0 | -12067000.0 | -11195000.0 | -8795000.0 | -9290000.0 | -8349000.0 | -8462000.0 | -8859000.0 | -9867000.0 | -11259000.0 | -11007000.0 | -11640000.0 | -11530000.0 | -12432000.0 | -12058000.0 | -12081000.0 | -11000000.0 | -14387000.0 | -14527000.0 | -14553000.0 | -16330000.0 | -14506000.0 | -12918000.0 | -13547000.0 | -12943000.0 | -12710000.0 | -12613000.0 | -13276000.0 | -12909000.0 | -13295000.0 | -13611000.0 | -13433000.0 | -13158000.0 | -12411000.0 | -12237000.0 | -12629000.0 | -12817000.0 | -11470000.0 | -10492000.0 | -10130000.0 | -9349000.0 | -8155000.0 | -7285000.0 | -7299000.0 |
| Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 |
| Value | -1400000.0 |
| Percentage of AllowanceForLoanAndLeaseLossesLoansAcquired | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 2200000.0 | 600000.0 |
| Percentage of AllowanceForLoanAndLeaseLossesLoansAcquired | 0.0 | 0.0 |
| Period End | 2020-10-15 |
| Value | 4050000.0 |
| Percentage of BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-06-30 | 2020-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-09-30 | 2017-06-30 |
| Value | 15 | -8.336 | 4.579 | 3.52 | 2.943 | 0.211 | 0.228 | 2.39 | 1.28 |
| Percentage of DebtAndEquitySecuritiesGainLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 1300000.0 | 2700000.0 | 1600000.0 | 300000.0 | 4177000.0 | 1200000.0 | 700000.0 | 3076000.0 | 15000.0 | 809000.0 | 0 | 211000.0 | 228000.0 | 142000.0 |
| Percentage of DebtSecuritiesAvailableForSaleRealizedGain | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 103000.0 | 0 | 171000.0 | 0 | 0 | 0 | 1400000.0 | 0 | 0 | 0 | 0 | 3000.0 |
| Percentage of DebtSecuritiesAvailableForSaleRealizedLoss | 100.0 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 115 | 0.311 | 4.006 | 1.227 | 0.755 | 3.057 | -1.403 | 0.809 | 0.0 | 0.211 | 0.228 | 0.139 |
| Percentage of DebtSecuritiesRealizedGainLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 41000.0 | -40000.0 | -12000.0 | 24000.0 | -149000.0 | 150000.0 | 98000.0 | -282000.0 | 133000.0 | 52000.0 | 424000.0 | -406000.0 | -159000.0 | 123000.0 |
| Percentage of DebtSecuritiesTradingUnrealizedGainLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 13 | 14 | 16 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 10 | 10 | 9.509 | 9.17 |
| Percentage of DepreciationAndAmortization | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | -8953000.0 | 9328000.0 | 34000.0 | 33000.0 | -3000.0 | -203000.0 | 48000.0 | -35000.0 | -105000.0 | -58000.0 | -111000.0 | 36000.0 | 53000.0 | 81000.0 | -1000.0 | -56000.0 | -86000.0 | -46000.0 |
| Percentage of DerivativeGainLossOnDerivativeNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 8896000.0 | -9251000.0 | -34000.0 | -32000.0 | 3000.0 | 202000.0 | -48000.0 | 35000.0 | 104000.0 | 59000.0 | 109000.0 | -37000.0 | -49000.0 | -81000.0 | 4000.0 | 55000.0 | 88000.0 | 46000.0 |
| Percentage of DerivativeGainLossOnDerivativeNet | -99.4 | -99.2 | -100.0 | -97.0 | -100.0 | -99.5 | -100.0 | -100.0 | -99.0 | -101.7 | -98.2 | -102.8 | -92.5 | -100.0 | -400.0 | -98.2 | -102.3 | -100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 | 2017-09-30 | 2017-06-30 |
| Value | -57000.0 | 77000.0 | 1000.0 | 0 | -1000.0 | -1000.0 | 1000.0 | -2000.0 | -1000.0 | 4000.0 | 3000.0 | -1000.0 | 2000.0 |
| Percentage of DerivativeGainLossOnDerivativeNet | 0.6 | 0.8 | 3.0 | -0.0 | 0.5 | 1.0 | -1.7 | 1.8 | -2.8 | 7.5 | -300.0 | 1.8 | -2.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 |
| Value | -245000.0 | 489000.0 | -487000.0 | 10000.0 | 16000.0 | -259000.0 | 3936000.0 | -1123000.0 | -1500000.0 | -873000.0 | -632000.0 | 67000.0 | 137000.0 | 336000.0 | -1235000.0 | 140000.0 | 168000.0 | 348000.0 | -673000.0 | 76000.0 | -440000.0 | -352000.0 | 101000.0 | -125000.0 | 20000.0 | -106000.0 | -22000.0 | -133000.0 | 31000.0 | -83000.0 | 103000.0 | -40000.0 | 48000.0 | 106000.0 |
| Percentage of DerivativeGainLossOnDerivativeNet | 2.7 | 5.2 | -1432.4 | 30.3 | -533.3 | 127.6 | 8200.0 | 3208.6 | 1428.6 | 1505.2 | 569.4 | 186.1 | 258.5 | 414.8 | 123500.0 | -250.0 | -195.3 | -756.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 19 | 19 | 22 | 20 | 21 | 21 | 20 | 19 | 18 | 19 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 16 | 17 | 16 | 16 | 17 | 15 | 14 | 14 | 13 | 12 | 12 | 13 | 12 | 11 | 11 | 11 | 10 | 11 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 10 |
| Percentage of EquipmentExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 |
| Value | -664000.0 | -1079000.0 | -115000.0 | 49000.0 | 33000.0 | -312000.0 | -123000.0 | -80000.0 | -24000.0 | -539000.0 | -123000.0 | -182000.0 | -346000.0 | -1713000.0 | -463000.0 | -49000.0 | -1317000.0 | -1783000.0 | -1334000.0 | 511000.0 | -284000.0 | 34000.0 | -212000.0 |
| Percentage of ExcessTaxBenefitFromShareBasedCompensationOperatingActivities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 6.199 | -0.003 | -3.444 | 0.881 | -0.219 | -6.607 |
| Percentage of FairValueOptionChangesInFairValueGainLoss1 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 |
| Value | 6.199 | -0.003 | -4.382 | 0.881 | -0.219 | -6.607 | 8.255 | -6.233 | 2.897 | -0.939 | -0.095 | -0.149 | 0.652 | 1.57 | -3.485 | 5.224 | -0.137 | -0.338 | -1.481 | -1.713 | 0.633 | 0.491 | -3.015 | -1.27 | -6.687 | 7.015 | -8.429 | 3.885 | -7.462 | 17 | -0.523 | 4.207 |
| Percentage of FairValueOptionChangesInFairValueGainLoss1 | 100.0 | 100.0 | 127.2 | 100.0 | 100.0 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 5199000.0 | 1292000.0 | 1282000.0 | 4373000.0 | 817000.0 | 2092000.0 |
| Percentage of FinancingReceivableAllowanceForCreditLossesRecovery | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 3635000.0 | 126000.0 | 833000.0 | 3923000.0 | 241000.0 | 1476000.0 |
| Percentage of FinancingReceivableAllowanceForCreditLossesRecovery | 69.9 | 9.8 | 65.0 | 89.7 | 29.5 | 70.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 54000.0 | 59000.0 | 12000.0 | 9000.0 | 34000.0 | 14000.0 |
| Percentage of FinancingReceivableAllowanceForCreditLossesRecovery | 1.0 | 4.6 | 0.9 | 0.2 | 4.2 | 0.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 572000.0 | 442000.0 | 386000.0 | 379000.0 | 369000.0 | 484000.0 |
| Percentage of FinancingReceivableAllowanceForCreditLossesRecovery | 11.0 | 34.2 | 30.1 | 8.7 | 45.2 | 23.1 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 0 | 18000.0 |
| Percentage of FinancingReceivableAllowanceForCreditLossesRecovery | 0.0 | 1.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 5199000.0 | 1292000.0 | 1282000.0 | 4373000.0 | 817000.0 | 2092000.0 |
| Percentage of FinancingReceivableAllowanceForCreditLossesRecovery | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 |
| Value | 36000.0 | 115000.0 |
| Percentage of FinancingReceivableAllowanceForCreditLossesRecovery | 0.7 | 8.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 838000.0 | 509000.0 | 9000.0 | 6000.0 | 55000.0 | 21000.0 |
| Percentage of FinancingReceivableAllowanceForCreditLossesRecovery | 16.1 | 39.4 | 0.7 | 0.1 | 6.7 | 1.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 64000.0 | 23000.0 | 36000.0 | 56000.0 | 118000.0 | 97000.0 |
| Percentage of FinancingReceivableAllowanceForCreditLossesRecovery | 1.2 | 1.8 | 2.8 | 1.3 | 14.4 | 4.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 33 | 6.602 | 3.083 | 9.484 | 6.358 | 9.764 |
| Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.002 | 4.717 | 1.597 | 4.554 | 1.121 | 1.315 |
| Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs | 0.0 | 71.4 | 51.8 | 48.0 | 17.6 | 13.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.01 | 0.076 | 0.0 | 0.0 | 0.206 | 0.013 |
| Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs | 0.0 | 1.2 | 0.0 | 0.0 | 3.2 | 0.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 1.477 | 1.692 | 1.373 | 1.823 | 2.004 | 2.126 |
| Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs | 4.4 | 25.6 | 44.5 | 19.2 | 31.5 | 21.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | 0.0 | 0.008 | 0.0 | 0.0 | 0.011 |
| Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs | 0.0 | 0.1 | 0.0 | 0.0 | 0.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 33 | 6.602 | 3.083 | 9.484 | 6.358 | 9.764 |
| Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 |
| Value | 31 |
| Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs | 95.2 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.019 | 3.0 | 2.858 | 6.062 |
| Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs | 0.6 | 31.6 | 45.0 | 62.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.139 | 0.109 | 0.094 | 0.107 | 0.158 | 0.248 |
| Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs | 0.4 | 1.7 | 3.0 | 1.1 | 2.5 | 2.5 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | -440.559 | 440 | 0.441 |
| Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 |
| Value | -0.94 | 4.298 | -0.973 | 0.003 | -0.155 | 1.922 | 0.127 | -0.365 | 0.376 | 0.236 | 2.564 | 0.369 | -0.07 | -0.142 | 102 | 0.503 | -1.039 | 1.02 | 0.626 | -0.584 | 0.452 | 0.268 | -0.001 | 0.104 | 0.076 | -0.081 | 0.086 |
| Percentage of GainLossOnDispositionOfAssets1 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 1640000.0 | 1602000.0 | 2044000.0 | 1110000.0 | 490000.0 | 320000.0 | 450000.0 | 484000.0 | 259000.0 | 177000.0 | 217000.0 | 416000.0 | 280000.0 | 270000.0 | 373000.0 | 443000.0 | 446000.0 | 299000.0 | 493000.0 | 410000.0 | 672000.0 | 199000.0 | 200000.0 | 304000.0 | 485000.0 | 342000.0 | 323000.0 | 319000.0 | 306000.0 | 189000.0 | 278000.0 | 174000.0 | 224000.0 | 211000.0 | 484000.0 | 607000.0 | 615000.0 | 304000.0 | 459000.0 | 88000.0 | 571000.0 | 480000.0 | 731000.0 | 402000.0 | 76000.0 | 170000.0 |
| Percentage of GainLossOnSaleOfLoansAndLeases | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 6.3 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of GoodwillWrittenOffRelatedToSaleOfBusinessUnit | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | -0.345 | -4.156 | 7.318 | 5.612 | 15 | -12.629 | 5.484 | -5.372 | 7.389 | 6.839 | 6.156 | 3.879 | 2.501 | -1.231 | 5.17 | 3.954 | 2.087 | -2.01 | 6.029 | 0.366 | 2.648 | -0.125 | 2.264 | 2.884 | 1.141 | 0.786 | 2.034 | 3.458 | -1.579 | -2.832 | 6.186 | 0.213 | 1.307 | 0.761 | -0.35 | -1.297 | -2.547 | -2.054 | 0.808 | -2.94 | 4.379 | -2.903 | 12 | 2.18 | 0.295 | -3.434 |
| Percentage of IncreaseDecreaseInAccruedInvestmentIncomeReceivable | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 27 | -88.201 | 53 | 15 | 25 | -2.803 | 10 | 23 | 56 | -13.319 | 6.169 | 23 | 17 | -61.711 | -61.817 | 32 | 18 | -29.98 | 9.323 | 16 | 28 | -40.439 | -4.649 | 13 | 12 | -25.614 | 18 | 30 | 19 | -28.557 | 32 | 10 | 29 | -11.956 | 3.012 | 15 | 9.242 | -19.282 | -0.491 | 11 | 2.986 | 2.687 | 3.359 | -7.214 | 3.461 | 0.64 |
| Percentage of IncreaseDecreaseInAccruedLiabilities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 23 | 444 | 386 | -34.69 | 72 | -5.591 | 105 | 82 | 214 | -24.872 | 325 | -473.173 | 311 | 93 | -596.133 | -29.533 | -503.994 | 533 | -164.186 | 232 | 106 | -136.339 | 475 | -431.835 | 55 | -306.052 | 313 | 104 | -366.442 | 390 | 55 | -630.015 | 498 | -127.927 | 623 | -236.367 | -102.139 | -448.122 | 610 | -165.244 | -181.415 | -396.99 | 652 | 31 | 89 | -616.311 |
| Percentage of IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 13 | -211.53 | 189 | -105.695 | -192.862 | -241.344 | 259 | -38.433 | 106 | -248.535 | 110 | 120 | -67.225 | -293.085 | 155 | -109.739 | 163 | -65.002 | 54 | -63.434 | 107 | -217.851 | 0.515 | -49.502 | 90 | -394.08 | 302 | -58.891 | -186.978 | -234.922 | 277 | 123 | -25.919 | -215.696 | 149 | -64.975 | -82.391 | -274.617 | 205 | -55.777 | -51.435 | -243.459 | 149 | 37 | -92.278 | -255.508 |
| Percentage of IncreaseDecreaseInTimeDeposits | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 212 | 205 | 207 | 197 | 192 | 211 | 215 | 219 | 216 | 211 | 202 | 185 | 176 | 167 | 163 | 157 | 151 | 144 | 139 | 132 | 127 | 124 | 119 | 115 | 101 | 93 | 94 | 90 | 89 | 89 | 89 | 89 | 86 | 83 | 84 | 84 | 85 | 84 | 85 | 85 | 86 | 85 | 86 | 86 | 86 | 86 |
| Percentage of InterestAndDividendIncomeOperating | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 54 | 52 | 51 | 51 | 50 | 51 | 51 | 50 | 48 | 46 | 41 | 38 | 38 | 38 | 36 | 36 | 36 | 36 | 34 | 31 | 32 | 32 | 30 | 29 | 29 | 28 | 29 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 29 | 29 | 30 | 29 | 29 | 29 | 30 | 30 | 29 | 29 | 29 | 31 |
| Percentage of InterestAndDividendIncomeSecurities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 6.574 | 6.798 | 7.955 | 9.284 | 11 | 29 | 35 | 41 | 39 | 37 | 34 | 25 | 18 | 13 | 12 | 10 | 7.835 | 5.966 | 5.119 | 4.626 | 4.136 | 4.055 | 3.836 | 3.863 | 3.522 | 3.048 | 3.076 | 3.015 | 3.092 | 3.059 | 2.961 | 3.097 | 3.333 | 3.792 | 3.973 | 4.079 | 4.376 | 4.988 | 5.66 | 6.139 | 6.163 | 6.666 | 7.462 | 7.9 | 8.462 | 9.624 |
| Percentage of InterestExpenseDeposits | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 1.779 | 1.886 | 1.726 | 1.73 | 1.95 | 6.381 | 6.629 | 8.313 | 9.347 | 8.264 | 5.815 | 7.524 | 6.666 | 4.732 | 3.632 | 5.811 | 4.994 | 3.469 | 1.774 | 1.894 | 1.626 | 1.23 | 0.396 | 0.427 | 0.47 | 0.492 | 0.323 | 0.358 | 0.454 | 0.481 | 0.296 | 0.385 | 0.491 | 0.567 | 0.482 | 0.454 | 0.508 | 0.439 | 0.307 | 0.339 | 0.398 | 0.668 | 0.544 | 0.525 | 0.503 | 0.444 |
| Percentage of InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 0.833 | 0.703 | 0.384 | 0.299 | 0.398 | 2.663 | 2.765 | 3.45 | 2.768 | 3.899 | 3.761 | 1.513 | 1.056 | 1.58 | 1.987 | 0.753 | 0.58 | 0.551 | 0.569 | 0.445 | 0.436 | 0.891 | 0.595 | 0.475 | 0.434 | 0.852 | 0.51 | 0.426 | 0.466 | 1.123 | 0.642 | 0.276 | 0.33 | 0.669 | 0.367 | 0.225 | 0.362 | 0.835 | 0.651 | 0.628 | 0.843 | 1.162 | 0.815 | 0.749 | 1.032 | 1.319 |
| Percentage of InterestIncomeDepositsWithFinancialInstitutions | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 177 | 201 | 189 | 168 | 156 | 85 | 170 | 160 | 155 | 151 | 113 | 144 | 143 | 137 | 140 | 129 | 122 | 125 | 123 | 111 | 114 | 112 | 109 | 107 | 92 | 87 | 87 | 83 | 81 | 80 | 81 | 79 | 77 | 77 | 76 | 75 | 75 | 74 | 74 | 74 | 74 | 71 | 71 | 70 | 69 | 67 |
| Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 2.552 | 2.821 | 2.567 | 2.248 | 1.573 | 5.452 | 4.875 | 2.817 | 2.526 | 3.625 | 2.353 | 0.665 | 0.752 | 1.038 | 1.062 | 1.008 | 0.711 | 0.919 | 0.769 | 0.79 | 0.642 | 0.507 | 0.32 | 0.175 | 0.151 | 0.051 | 0.093 | 0.087 | 0.046 | 0.033 | 0.067 | 0.062 | 0.04 | 0.024 | 0.033 | 0.048 | 0.025 | 0.016 | 0.029 | 0.045 | 0.013 | 0.015 | 0.022 | 0.029 | 0.047 | 0.061 |
| Percentage of InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 24 | 24 | 25 | 25 | 24 | 24 | 24 | 23 | 21 | 20 | 19 | 18 | 18 | 18 | 19 | 18 | 18 | 17 | 16 | 14 | 13 | 12 | 11 | 11 | 10 | 9.915 | 9.759 | 9.745 | 9.798 | 9.907 | 6.897 | 10 | 10 | 9.76 | 7.515 | 9.602 | 9.468 | 9.375 | 7.734 | 8.825 | 8.282 | 8.238 | 6.323 | 7.33 | 7.028 | 7.317 |
| Percentage of InterestIncomeSecuritiesTaxExempt | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 29 | 27 | 26 | 26 | 25 | 27 | 26 | 26 | 26 | 25 | 22 | 20 | 20 | 19 | 17 | 17 | 18 | 19 | 18 | 17 | 18 | 19 | 18 | 18 | 19 | 18 | 19 | 18 | 19 | 18 | 18 | 19 | 18 | 18 | 19 | 20 | 21 | 20 | 20 | 20 | 22 | 22 | 22 | 22 | 22 | 23 |
| Percentage of InterestIncomeSecuritiesTaxable | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 8.67 | 9.356 | 9.693 | 8.678 | 12 | 1.723 | 6.72 | 5.712 | 5.453 | 5.581 | 3.119 | 3.711 | 4.653 | 4.101 | 5.015 | 4.453 | 6.173 | 7.542 | 5.04 | 6.114 | 5.638 | 4.63 | 5.559 | 2.969 | 5.568 | 6.122 | 4.84 | 3.826 | 6.409 | 4.323 | 4.317 | 3.792 | 5.423 | 7.109 | 6.421 | 7.12 | 7.14 | 9.678 | 7.271 | 4.952 | 6.478 | 9.019 | 8.757 | 7.897 | 5.53 | 7.027 |
| Percentage of InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 120 | 127 | 129 | 124 | 130 | 111 | 120 | 110 | 114 | 116 | 103 | 102 | 104 | 107 | 107 | 99 | 102 | 113 | 107 | 109 | 108 | 107 | 103 | 104 | 99 | 98 | 90 | 90 | 89 | 88 | 88 | 83 | 83 | 83 | 83 | 78 | 78 | 79 | 74 | 74 | 72 | 72 | 72 | 69 | 63 | 62 |
| Percentage of LaborAndRelatedExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 8.147 | 5.755 | 10 | 7.244 | 6.22 | 6.11 | 10 | 8.374 | 7.496 | 5.633 | 11 | 8.47 | 6.46 | 3.844 | 6.045 | 5.844 | 6.467 | 5.3 | 7.056 | 4.45 | 4.937 | 4.799 | 7.447 | 8.648 | 5.917 | 4.378 | 7.907 | 4.496 | 4.632 | 3.372 | 5.826 | 4.433 | 4.844 | 3.6 | 6.142 | 4.311 | 4.012 | 3.515 | 5.636 | 3.272 | 4.075 | 2.617 | 5.546 | 4.108 | 2.77 | 1.622 |
| Percentage of LegalFees | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 201 | 200 | 226 | 197 | 208 | 188 | 203 | 191 | 193 | 190 | 184 | 180 | 177 | 175 | 182 | 171 | 176 | 188 | 186 | 179 | 185 | 180 | 182 | 185 | 171 | 164 | 166 | 161 | 166 | 172 | 170 | 153 | 150 | 150 | 157 | 145 | 144 | 141 | 142 | 139 | 145 | 135 | 138 | 130 | 126 | 117 |
| Percentage of NoninterestExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 69 | 65 | 85 | 65 | 62 | 59 | 65 | 66 | 68 | 66 | 64 | 64 | 62 | 62 | 64 | 60 | 62 | 62 |
| Percentage of NoninterestExpense | 34.3 | 32.7 | 37.9 | 32.9 | 29.8 | 31.3 | 32.2 | 34.7 | 35.4 | 35.1 | 35.1 | 35.5 | 35.5 | 35.4 | 35.3 | 35.3 | 35.3 | 33.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 72 | 71 | 71 | 69 | 76 | 68 | 59 | 55 | 52 | 52 | 48 | 47 | 47 | 46 | 48 | 44 | 46 | 44 |
| Percentage of NoninterestExpense | 36.0 | 35.5 | 31.5 | 35.2 | 36.9 | 36.3 | 29.1 | 28.9 | 27.1 | 27.6 | 26.2 | 26.1 | 26.8 | 26.6 | 26.6 | 26.0 | 26.3 | 23.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 59 | 64 | 69 | 63 | 69 | 61 | 66 | 58 | 60 | 58 | 59 | 56 | 54 | 54 | 57 | 56 | 56 | 55 |
| Percentage of NoninterestExpense | 29.6 | 31.9 | 30.6 | 31.9 | 33.3 | 32.4 | 32.6 | 30.5 | 31.0 | 30.6 | 32.3 | 31.4 | 30.6 | 31.3 | 31.7 | 32.7 | 31.9 | 29.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 16 | 15 | 14 | 12 | 13 | 13 | 13 | 13 | 13 | 12 | 11 | 12 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 11 | 11 | 11 | 13 | 12 | 12 | 12 | 13 | 14 | 14 | 13 | 14 | 14 | 14 | 14 | 12 | 12 | 12 | 12 | 11 | 12 | 13 | 12 | 11 | 11 | 11 | 11 |
| Percentage of NoninterestExpenseTransferAgentAndCustodianFees | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 131 | 108 | 228 | 112 | 120 | 98 | 110 | 103 | 105 | 107 | 94 | 100 | 100 | 105 | 106 | 104 | 110 | 120 | 116 | 121 | 121 | 116 | 112 | 109 | 119 | 125 | 115 | 126 | 134 | 122 | 135 | 121 | 113 | 121 | 109 | 106 | 110 | 132 | 97 | 100 | 107 | 107 | 94 | 90 | 89 | 86 |
| Percentage of NoninterestIncome | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 2.592 | 3.334 | 3.918 | 4.819 | 5.753 | 9.86 | 8.839 | 8.102 | 7.077 | 7.243 |
| Percentage of NoninterestIncome | 2.0 | 3.1 | 1.7 | 4.3 | 4.8 | 10.0 | 8.0 | 7.8 | 6.7 | 6.7 |
| Period End | 2020-09-30 | 2020-03-31 | 2019-09-30 | 2019-03-31 |
| Value | 0.311 | 1.227 | 3.057 | 0.809 |
| Percentage of NoninterestIncome | 0.3 | 1.2 | 2.9 | 0.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 0.245 | 0.42 | 0.318 | 0.259 | 0.533 | 0.259 | 0.511 | 0.32 | 0.465 | 0.338 |
| Percentage of NoninterestIncome | 0.2 | 0.4 | 0.1 | 0.2 | 0.4 | 0.3 | 0.5 | 0.3 | 0.4 | 0.3 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | -8.336 | 3.52 |
| Percentage of NoninterestIncome | -7.7 | 3.6 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 15 | 4.579 |
| Percentage of NoninterestIncome | 11.7 | 3.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 12 | 12 | 12 | 13 | 19 | -3.271 | 11 | 3.711 | 13 | 13 |
| Percentage of NoninterestIncome | 9.2 | 11.6 | 5.5 | 11.9 | 15.8 | -3.3 | 10.2 | 3.6 | 13.0 | 12.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 8.67 | 9.356 | 9.693 | 8.678 | 12 | 1.723 | 6.72 | 5.712 | 5.453 | 5.581 |
| Percentage of NoninterestIncome | 6.6 | 8.6 | 4.2 | 7.7 | 10.7 | 1.8 | 6.1 | 5.5 | 5.2 | 5.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 16 | 14 | 15 | 15 | 12 | 16 | 16 | 16 | 16 | 17 |
| Percentage of NoninterestIncome | 12.2 | 13.5 | 6.9 | 13.5 | 10.7 | 16.8 | 14.8 | 16.3 | 15.6 | 15.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 22 | 21 | 20 | 19 | 19 | 25 | 20 | 20 | 20 | 21 |
| Percentage of NoninterestIncome | 17.2 | 20.2 | 8.8 | 17.4 | 15.8 | 25.5 | 18.2 | 19.9 | 19.7 | 19.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 53 | 54 | 50 | 50 | 46 | 47 | 46 | 45 | 42 | 41 |
| Percentage of NoninterestIncome | 40.9 | 50.4 | 22.2 | 44.7 | 38.5 | 47.8 | 42.4 | 43.6 | 40.7 | 39.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 36 | 7.385 | 131 | 22 | 24 | 11 | 19 | 18 | 20 | 23 | 14 | 20 | 19 | 20 | 20 | 21 | 21 | 19 |
| Percentage of NoninterestIncome | 27.7 | 6.8 | 57.7 | 19.9 | 20.0 | 11.4 | 17.4 | 18.2 | 19.3 | 21.6 | 15.1 | 20.6 | 19.1 | 19.5 | 19.1 | 20.2 | 19.7 | 15.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 68 | 68 | 63 | 62 | 66 | 61 | 53 | 49 | 46 | 45 | 41 | 43 | 43 | 45 | 46 | 46 | 48 | 45 |
| Percentage of NoninterestIncome | 52.2 | 62.8 | 27.9 | 55.5 | 55.2 | 62.9 | 48.5 | 48.1 | 44.4 | 42.6 | 43.8 | 42.8 | 43.3 | 43.0 | 44.1 | 44.5 | 43.7 | 37.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 |
| Value | 26 | 33 | 32 | 27 | 29 | 25 | 28 | 26 | 29 | 28 | 30 | 28 | 28 | 30 | 30 | 28 | 31 | 28 |
| Percentage of NoninterestIncome | 20.1 | 30.4 | 14.4 | 24.6 | 24.8 | 25.6 | 26.2 | 25.2 | 27.9 | 26.4 | 32.3 | 28.0 | 28.6 | 29.1 | 29.2 | 27.1 | 28.2 | 23.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 12 | 12 | 12 | 13 | 19 | -3.271 | 10 | 3.711 | 13 | 13 | 5.808 | 9.032 | 8.026 | 10 | 10 | 7.81 | 8.87 | 7.13 | 7.786 | 6.716 | 7.112 | 4.524 | 5.138 | 3.153 | 3.577 | 4.144 | 3.6 | 3.149 | 6.585 | 3.479 | 2.106 | 8.232 | 2.121 | 3.833 | 5.339 | 4.882 | 4.652 | 13 | 3.897 | 3.239 | 3.256 | 2.953 | 4.207 | 4.306 | 6.792 | 2.875 |
| Percentage of NoninterestIncomeOtherOperatingIncome | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 12 | 11 | 11 | 12 | 11 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 10 | 10 | 10 | 10 | 9.705 | 9.705 | 10 | 10 | 9.273 | 9.887 | 9.568 | 9.87 | 9.211 | 9.278 | 9.824 | 9.398 | 9.579 | 9.605 | 9.244 | 9.162 | 8.924 | 8.921 |
| Percentage of OccupancyNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | -2000000.0 | -890000.0 | 0 | 3500000.0 |
| Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal | 100.0 | 100.0 | 0.0 | 100.0 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | -1515000.0 | -1558000.0 | 0 | 3154000.0 |
| Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal | 75.8 | 175.1 | 0.0 | 90.1 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | -3000.0 | -169000.0 | 0 | 212000.0 |
| Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal | 0.1 | 19.0 | 0.0 | 6.1 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | 36000.0 | -2000.0 | 0 | -13000.0 |
| Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal | -1.8 | 0.2 | 0.0 | -0.4 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | -150000.0 | 241000.0 | 0 | -38000.0 |
| Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal | 7.5 | -27.1 | 0.0 | -1.1 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | -2036000.0 | -888000.0 | 0 | 3513000.0 |
| Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal | 101.8 | 99.8 | 0.0 | 100.4 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | -74000.0 | 206000.0 | 0 | 28000.0 |
| Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal | 3.7 | -23.1 | 0.0 | 0.8 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | -121000.0 | 44000.0 | 0 | 146000.0 |
| Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal | 6.0 | -4.9 | 0.0 | 4.2 |
| Period End | 2021-06-30 | 2020-12-31 | 2020-09-30 | 2020-06-30 |
| Value | -173000.0 | 348000.0 | 0 | 11000.0 |
| Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal | 8.7 | -39.1 | 0.0 | 0.3 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | -2000000.0 | 3500000.0 |
| Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 70 | -196.097 | 25 | 19 | 84 | 178 | -16.936 | 43 | 105 | 103 |
| Percentage of OtherComprehensiveIncomeLossBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | -4.299 | 5.661 | 0.928 | -1.245 | 4.098 | 15 | -1.972 | -7.189 | -3.041 | -2.093 |
| Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | -3.422 | 6.503 | 1.964 | -0.122 | 4.612 | 14 | -2.7 | -7.469 | -3.061 | -2.088 |
| Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 |
| Value | 0.0 | -1.231 | 4.687 | 24 | -0.079 | -4.166 |
| Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax | 0.0 | 1009.0 | 101.6 | 171.7 | 2.9 | 55.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 |
| Value | -3.422 | 6.503 | 1.964 | 1.109 | -0.075 | -10.409 | 2.945 | -3.836 | -3.0 | -2.093 | -2.368 | 1.162 | 0.91 | 2.202 | 0.03 | -0.169 | -1.157 |
| Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax | 100.0 | 100.0 | 100.0 | -909.0 | -1.6 | -71.7 | -109.1 | 51.4 | 98.0 | 100.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 |
| Value | -3.422 | 6.503 | 1.964 | -0.122 | 4.612 | 14 | 2.866 | -8.002 | -3.041 | -2.093 | -2.368 | 1.162 | 0.91 | 2.202 | 0.03 | -0.169 | -1.157 |
| Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | -106.1 | 107.1 | 99.3 | 100.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 877000.0 | 842000.0 | 1036000.0 | 1123000.0 | 514000.0 | -768000.0 | -728000.0 | -280000.0 | -20000.0 | 5000.0 |
| Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 |
| Value | 1210000.0 | 1166000.0 | 1365000.0 | 1443000.0 | 771000.0 | -636000.0 | -644000.0 | -230000.0 |
| Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax | 138.0 | 138.5 | 131.8 | 128.5 | 150.0 | 82.8 | 88.5 | 82.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | -333000.0 | -324000.0 | -329000.0 | -320000.0 | -257000.0 | -132000.0 | -85000.0 | -50000.0 | -20000.0 | 5000.0 |
| Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax | -38.0 | -38.5 | -31.8 | -28.5 | -50.0 | 17.2 | 11.7 | 17.9 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 877000.0 | 842000.0 | 1036000.0 | 1123000.0 | 514000.0 | -768000.0 | -85000.0 | -50000.0 | -20000.0 | 5000.0 |
| Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 11.7 | 17.9 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 |
| Value | -561000.0 | -555000.0 | -567000.0 | -616000.0 | -636000.0 | -636000.0 | -644000.0 | -230000.0 |
| Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAdjustmentsBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 |
| Value | -561000.0 | -555000.0 | -567000.0 | -616000.0 | -636000.0 | -636000.0 | -644000.0 | -230000.0 |
| Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAdjustmentsBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 |
| Value | 0 | -655000.0 | -1510000.0 | -4362000.0 | -5566000.0 | 533000.0 |
| Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 |
| Value | 0 | -655000.0 | -1510000.0 | -4362000.0 | -5566000.0 | 533000.0 |
| Percentage of OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2012-12-31 | 2012-09-30 | 2012-06-30 |
| Value | 1.3 | 2.72 | 1.436 | 0.311 | 4.006 | 1.227 | 0.755 | 3.057 | -1.403 | 0.809 | 0.0 | 0.211 | 0.228 | 0.139 | 0.054 | 2.39 | 1.28 | 0.468 | 0.0 | 2.978 | 2.598 | 2.933 | 1.998 | 0.101 | 0.967 | 7.336 | 0.062 | 0.026 | 2.569 | 1.47 | -0.01 | 1.14 | 1.519 | 0.21 | 0.259 | 3.222 |
| Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 |
| Value | 16 | -46.954 | 5.831 | 4.578 | 20 | 41 | -4.095 | 10 | 25 | 25 | 19 | -8.698 | -3.77 | -19.782 | -18.674 | 1.548 | 12 | 8.666 | -61.218 | -7.784 | 13 | 22 | -18.442 | 17 | -17.569 | 9.536 |
| Percentage of OtherComprehensiveIncomeLossTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 |
| Value | 76 | -199.038 | 25 | 20 | 84 | 164 | -14.209 | 54 | 107 | 106 | 81 | -36.331 | -16.02 | -80.662 | -41.507 | 5.064 | 35 |
| Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 8.062 | 5.824 | 22 | 5.603 | 8.372 | 6.853 | 2.981 | 8.593 | 7.527 | 8.054 | 7.987 | 6.139 | 5.639 | 5.237 | 7.16 | 6.137 | 6.387 | 9.126 | 9.321 | 5.742 | 8.536 | 8.219 | 6.406 | 7.065 | 6.558 | 5.311 | 5.251 | 8.365 | 6.992 | 10 | 14 | 7.432 | 4.848 | 8.492 | 11 | 6.548 | 7.984 | 5.9 | 9.301 | 8.147 | 5.605 | 6.009 | 5.713 | 5.72 | 9.021 | 5.752 |
| Percentage of OtherNoninterestExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 38 | 45 | 53 | -224.318 | 221 | 77 | 93 | 67 | 35 | 19 | 18 | 15 | 12 | 12 | 11 | 20 | 21 | 10 | 20 | 28 | 28 | 14 | 17 | 19 | 33 | 25 | 20 | 19 | 20 | 11 | 16 | 24 | 37 | 39 | 58 | 71 | 56 | 51 | 57 | 52 | 38 | 55 | 86 | 51 | 53 | 26 |
| Percentage of PaymentsForOriginationAndPurchasesOfLoansHeldForSale | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 448 | 398 | 155 | 650 | 1363 | 525 | 392 | 145 | 362 | 383 | 261 | 335 | 185 | 188 | 289 | 158 | 99 | 222 | 252 | 216 | 386 | 274 | 383 | 130 | 439 | 33 | 366 | 186 | 167 | 242 | 15 | 171 | 331 | 327 | 296 | 77 | 177 | 187 | 191 | 49 | 72 | 93 | 8.975 | 140 | 85 | -19.334 |
| Percentage of PaymentsForProceedsFromLoansAndLeases | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 |
| Value | -78000.0 |
| Percentage of PaymentsOfDebtIssuanceCosts | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 999 | 1322 | 1042 | 1032 | 1875 | 422 | 627 | 607 | 532 | 579 | 726 | 244 | 174 | 340 |
| Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 102 | 77 | 22 | 9.253 | 42 | 18 | 130 | 53 | 13 | 1.893 | 12 | 9.852 | 3.551 | 6.756 | 11 | 28 | 89 | 108 | 127 | 135 | 91 | 146 | 109 | 143 | 113 | 84 | 50 | 9.743 | 32 | 16 | 41 | 38 | 33 | 22 | 20 | 8.655 | 1.173 | 9.676 | 2.489 | 21 | 4.689 | 6.104 | 5.244 | 5.021 | 4.25 | 1.678 |
| Percentage of PaymentsToAcquireHeldToMaturitySecurities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 |
| Value | 50 | 0.0 | 0.0 | 0.0 | 0.0 |
| Percentage of PaymentsToAcquireLifeInsurancePolicies | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2018-12-31 |
| Value | 0 | 15000.0 | 1455000.0 | 19000.0 | 1743000.0 | 0 |
| Percentage of ProceedsFromInsuranceSettlementInvestingActivities | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 437 | 520 | 405 | 786 | 949 | 313 | 465 | 254 | 268 | 267 | 191 | 225 | 271 | 328 | 193 | 264 | 335 | 405 | 491 | 520 | 388 | 391 | 275 | 279 | 307 | 338 | 286 | 242 | 275 | 516 | 302 | 295 | 382 | 514 | 518 | 346 | 384 | 441 | 339 | 293 | 373 | 554 | 343 | 422 | 603 | 624 |
| Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 60 | 49 | 82 | 52 | 39 | 19 | 88 | 60 | 35 | 22 | 32 | 15 | 44 | 21 | 23 | 31 | 16 | 16 | 18 | 7.218 | 13 | 8.672 | 28 | 4.747 | 10 | 15 | 8.466 | 9.043 | 3.261 | 4.5 | 6.824 | 17 | 2.136 | 7.996 | 3.429 | 2.397 | 1.767 | 2.163 | 1.661 | 2.072 | 3.525 | 1.556 | 1.31 | 2.267 | 3.371 | 2.626 |
| Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 483 | 20 | -549.022 | 246 | -562.893 | 793 | -1114.953 | -179.789 | -18.831 | 362 | -420.589 | -136.066 | 56 | 64 | 52 | -59.915 | 11 | 127 | -79.436 | -48.608 | -25.459 | 2.803 | -74.865 | -7.436 | -56.615 | 93 | -52.85 | 17 | 26 | -21.968 | -32.584 | 12 | -47.927 | 70 | -48.696 | -10.439 | -21.07 | 56 | 20 | -42.209 | -40.693 | 231 | -212.777 | 7.237 | -8.459 | 308 |
| Percentage of ProceedsFromPaymentsForFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResellNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | -17.719 | -11.347 | -8.018 | -6.367 | 1.824 | -1.274 | -5.7 | 0.0 | -0.88 | -3.867 | 14 | -12.112 | 0.662 | 6.674 | 11 | 9.879 | 1.923 | 22 | 22 | 12 | 18 | 33 | -6.113 | 21 | 6.509 | 12 | -34.29 | -50.353 | -26.301 | -53.471 | -9.749 | 1.496 | -0.903 | -1.004 | 7.997 | 27 | 77 | 16 | -15.406 | -2.599 | 9.824 | 28 | 19 | 81 | 32 | -18.458 |
| Percentage of ProceedsFromPaymentsForInInterestBearingDepositsInBanks | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 |
| Value | 47 | 129 | 58 | 6.542 | 166 | 84 | 80 | 186 | 91 | 53 | 0.0 | 54 | -0.001 | 41 |
| Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 45 | 43 | 60 | -225.973 | 223 | 75 | 97 | 59 | 34 | 21 | 18 | 17 | 14 | 9.664 | 15 | 19 | 20 | 14 | 27 | 27 | 23 | 10 | 18 | 21 | 34 | 23 | 21 | 20 | 19 | 11 | 18 | 28 | 37 | 37 | 69 | 69 | 55 | 51 | 59 | 47 | 38 | 64 | 83 | 50 | 61 | 26 |
| Percentage of ProceedsFromSaleOfLoansHeldForSale | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 45 | 43 | -225.9 | 223 | 75 | 59 | 34 | 21 |
| Percentage of ProceedsFromSaleOfLoansHeldForSale | 99.9 | 100.1 | 100.0 | 100.0 | 100.0 | 100.1 | 99.8 | 100.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 1755000.0 | 73000.0 | 71000.0 | 77000.0 | 31000.0 | 8389000.0 | 1373000.0 | 298000.0 | 961000.0 | 2904000.0 | 4916000.0 | 437000.0 | 1387000.0 | 1617000.0 | -140000.0 | 173000.0 | -404000.0 | 541000.0 | 943000.0 | 680000.0 | 922000.0 | 30000.0 | 88000.0 | 29000.0 | 198000.0 | 267000.0 | 3594000.0 | 1153000.0 | 1778000.0 | -2000.0 | 2000.0 | 808000.0 | 439000.0 | 373000.0 | -179000.0 | 840000.0 | 22000.0 | 117000.0 | -75000.0 | 118000.0 | 2363000.0 | 145000.0 | 116000.0 | 169000.0 |
| Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.0 | 0.0 | 0.0 | 15 |
| Percentage of ProceedsFromShortTermDebt | 0.0 | 0.0 | 0.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 5.0 | 16 | 21 | 88 | 2.0 | 7.5 | 11 | 12 | 48 | 5.75 | 7.0 | 10.0 | 6.0 | 11 | 14 | 9.0 | 7.5 | 13 | 7.0 | 5.0 | 5.0 | 2.5 | 5.0 | 3.0 | 3.0 | 4.5 | 5.0 | 4.5 | 4.0 | 6.5 | 5.0 | 2.0 | -4.0 | 4.5 | 4.5 | 4.5 | 5.0 | 4.5 | 5.6 | 7.1 | 7.4 | 7.7 | 8.1 | 8.31 |
| Percentage of ProvisionForLoanAndLeaseLosses | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 24 | -7.5 | 5.0 | 16 | 21 | 88 | 2.0 | 7.5 | 11 | 12 |
| Percentage of ProvisionForLoanLeaseAndOtherLosses | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 22 | -8.182 | 3.891 | 14 | 19 | 82 | 0.557 | 5.966 | 9.306 | 10 |
| Percentage of ProvisionForLoanLeaseAndOtherLosses | 91.7 | 109.1 | 77.8 | 87.7 | 89.7 | 93.4 | 27.9 | 79.5 | 84.6 | 83.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 0.147 | 0.22 | 0.116 | 0.193 | 0.298 | 0.275 | 0.252 | 0.256 | 0.181 | 0.286 |
| Percentage of ProvisionForLoanLeaseAndOtherLosses | 0.6 | -2.9 | 2.3 | 1.2 | 1.4 | 0.3 | 12.6 | 3.4 | 1.6 | 2.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 1.844 | 0.462 | 0.993 | 1.775 | 1.921 | 5.505 | 1.191 | 1.278 | 1.513 | 1.735 |
| Percentage of ProvisionForLoanLeaseAndOtherLosses | 7.7 | -6.2 | 19.9 | 11.1 | 8.9 | 6.3 | 59.5 | 17.0 | 13.8 | 14.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 26 | -7.5 | 5.89 | 16 | 18 | 88 |
| Percentage of ProvisionForLoanLossesExpensed | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | -5.08 | 1.459 | 3.605 | 5.88 | -7.042 | 55 |
| Percentage of ProvisionForLoanLossesExpensed | -19.5 | -19.5 | 61.2 | 36.8 | -39.1 | 62.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 1.58 | -2.386 | -1.031 | 1.644 | 1.947 | 1.401 |
| Percentage of ProvisionForLoanLossesExpensed | 6.1 | 31.8 | -17.5 | 10.3 | 10.8 | 1.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.504 | -2.392 | -0.544 | -0.824 | 2.397 | 3.812 |
| Percentage of ProvisionForLoanLossesExpensed | 1.9 | 31.9 | -9.2 | -5.2 | 13.3 | 4.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | -0.123 | 0.349 | -0.196 | -0.499 | 0.07 | 0.115 |
| Percentage of ProvisionForLoanLossesExpensed | -0.5 | -4.7 | -3.3 | -3.1 | 0.4 | 0.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | -0.2 | -0.681 | 0.387 | 0.094 | -0.513 | 1.172 |
| Percentage of ProvisionForLoanLossesExpensed | -0.8 | 9.1 | 6.6 | 0.6 | -2.9 | 1.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 26 | -7.849 | 6.086 | 16 | 17 | 87 |
| Percentage of ProvisionForLoanLossesExpensed | 100.5 | 104.7 | 103.3 | 103.1 | 99.6 | 99.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 33 | -0.661 | 1.636 | 2.654 | -2.62 | 0.856 |
| Percentage of ProvisionForLoanLossesExpensed | 127.5 | 8.8 | 27.8 | 16.6 | -14.6 | 1.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | -4.147 | -2.397 | 2.907 | 6.194 | 23 | 24 |
| Percentage of ProvisionForLoanLossesExpensed | -15.9 | 32.0 | 49.4 | 38.7 | 129.1 | 27.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.329 | -0.791 | -0.874 | 0.857 | 0.519 | 0.704 |
| Percentage of ProvisionForLoanLossesExpensed | 1.3 | 10.5 | -14.8 | 5.4 | 2.9 | 0.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 25 | 4.509 | 129 | 13 | 28 | -10.642 | 6.736 | 1.106 | 6.456 | 9.793 |
| Percentage of RevenueNotFromContractWithCustomer | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2020-03-31 | 2019-09-30 | 2019-03-31 |
| Value | 0.311 | 1.227 | 3.057 | 0.809 |
| Percentage of RevenueNotFromContractWithCustomer | 2.3 | -11.5 | 276.4 | 8.3 |
| Period End | 2021-03-31 | 2020-03-31 |
| Value | -8.336 | 3.52 |
| Percentage of RevenueNotFromContractWithCustomer | -184.9 | -33.1 |
| Period End | 2021-06-30 | 2020-06-30 |
| Value | 15 | 4.579 |
| Percentage of RevenueNotFromContractWithCustomer | 59.6 | 16.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 10 | 11 | 11 | 12 | 17 | -4.822 | 9.869 | 2.295 | 12 | 11 |
| Percentage of RevenueNotFromContractWithCustomer | 41.9 | 251.4 | 8.8 | 89.7 | 62.6 | 45.3 | 146.5 | 207.5 | 189.0 | 118.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 8.35 | 9.055 | 9.691 | 8.604 | 12 | 1.067 | 6.644 | 5.309 | 5.319 | 5.453 |
| Percentage of RevenueNotFromContractWithCustomer | 32.2 | 200.8 | 7.5 | 63.4 | 45.0 | -10.0 | 98.6 | 480.0 | 82.4 | 55.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | -8.81 | -7.616 | -7.121 | -7.578 | -6.209 | -8.157 | -9.598 | -9.592 | -9.694 | -8.061 |
| Percentage of RevenueNotFromContractWithCustomer | -34.0 | -168.9 | -5.5 | -55.8 | -21.8 | 76.6 | -142.5 | -867.3 | -150.2 | -82.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 0.078 | 0.07 | 0.063 | 0.056 | 0.049 | 0.043 | 0.039 | 0.037 | 0.034 | 0.035 |
| Percentage of RevenueNotFromContractWithCustomer | 0.3 | 1.6 | 0.0 | 0.4 | 0.2 | -0.4 | 0.6 | 3.3 | 0.5 | 0.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 0 | 695000.0 | 0 | 15000.0 | 0 | 593000.0 | 0 | 12000.0 | 0 | 604000.0 | 0 | 1000.0 | -1000.0 | 495000.0 | 1000.0 | -1000.0 | 1000.0 | 471000.0 | 0 | -1000.0 | 1000.0 | 429000.0 | 0 | -1000.0 | 0 | 460000.0 | -1000.0 | 20000.0 | 1000.0 | 469000.0 | 1000.0 | -1000.0 | 1000.0 | 449000.0 | 1000.0 | 0 | -1000.0 | 245000.0 | 0 | 1000.0 | 0 | 239000.0 | 0 | 0 | 1000.0 | 124000.0 |
| Percentage of StockIssuedDuringPeriodValueShareBasedCompensation | 0.0 | 100.0 | 0.0 | 100.0 | 0.0 | 100.0 | 0.0 | 100.0 | 0.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 0.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 0.0 | 100.0 | 0.0 | 100.0 | 0.0 | 0.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | -79000.0 | -4043000.0 | 59000.0 | -111000.0 | 155000.0 | 521000.0 | 707000.0 | 6000.0 | 724000.0 | 2383000.0 | 0 | 453000.0 | 502000.0 | -2959000.0 | 493000.0 | 565000.0 | 211000.0 | -4140000.0 | 362000.0 | 1084000.0 | 1742000.0 | -6199000.0 | 902000.0 | 1329000.0 | 339000.0 | -5848000.0 | 286000.0 | 771000.0 | 253000.0 | -3648000.0 | 538000.0 | 277000.0 | 126000.0 | -2592000.0 | -299000.0 | 86000.0 | 1039000.0 | -2737000.0 | 0 | -326000.0 | 0 | -1918000.0 | -56000.0 | -392000.0 | 149000.0 | -1374000.0 |
| Percentage of StockIssuedDuringPeriodValueShareBasedCompensation | 0.0 | -581.7 | 0.0 | -740.0 | 0.0 | 87.9 | 0.0 | 50.0 | 0.0 | 394.5 | 0.0 | 45300.0 | -50200.0 | -597.8 | 49300.0 | -56500.0 | 21100.0 | -879.0 | 0.0 | -108400.0 | 174200.0 | -1445.0 | 0.0 | -132900.0 | 0.0 | -1271.3 | -28600.0 | 3855.0 | 25300.0 | -777.8 | 53800.0 | -27700.0 | 12600.0 | -577.3 | -29900.0 | 0.0 | -103900.0 | -1117.1 | 0.0 | -32600.0 | 0.0 | -802.5 | 0.0 | 0.0 | 14900.0 | -1108.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 79000.0 | 4738000.0 | -59000.0 | 126000.0 | -155000.0 | 72000.0 | -707000.0 | 6000.0 | -724000.0 | -1779000.0 | 0 | -452000.0 | -503000.0 | 3454000.0 | -492000.0 | -566000.0 | -210000.0 | 4611000.0 | -362000.0 | -1085000.0 | -1741000.0 | 6628000.0 | -902000.0 | -1330000.0 | -339000.0 | 6308000.0 | -287000.0 | -751000.0 | -252000.0 | 4117000.0 | -537000.0 | -278000.0 | -125000.0 | 3041000.0 | 300000.0 | -86000.0 | -1040000.0 | 2982000.0 | 0 | 327000.0 | 0 | 2157000.0 | 56000.0 | 392000.0 | -148000.0 | 1498000.0 |
| Percentage of StockIssuedDuringPeriodValueShareBasedCompensation | 0.0 | 681.7 | 0.0 | 840.0 | 0.0 | 12.1 | 0.0 | 50.0 | 0.0 | -294.5 | 0.0 | -45200.0 | 50300.0 | 697.8 | -49200.0 | 56600.0 | -21000.0 | 979.0 | 0.0 | 108500.0 | -174100.0 | 1545.0 | 0.0 | 133000.0 | 0.0 | 1371.3 | 28700.0 | -3755.0 | -25200.0 | 877.8 | -53700.0 | 27800.0 | -12500.0 | 677.3 | 30000.0 | 0.0 | 104000.0 | 1217.1 | 0.0 | 32700.0 | 0.0 | 902.5 | 0.0 | 0.0 | -14800.0 | 1208.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 2.038 | 12 | 2.051 | 0.062 | 0.188 | 2.27 | 0.834 | 1.171 | 0.614 | 1.187 | 2.191 | 1.619 | 2.199 | 5.247 | 1.967 | 0.512 | 6.428 | 3.84 | 6.401 | 1.547 | 4.054 | 3.813 | 5.846 | 1.675 | 1.807 | 1.222 | 2.309 | 1.322 | 1.907 | 2.492 | 3.461 | 1.646 | 3.016 | 0.895 | 1.093 | 2.764 | 1.564 | 1.133 | 1.025 | 0.195 | 0.383 | 0.23 | 0.92 | 0.025 | 0.266 | 0.231 |
| Percentage of StockIssuedDuringPeriodValueStockOptionsExercised | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 0.316 | 2.738 | 0.294 | 0.01 | 0.037 | 0.392 | 0.152 | 0.211 | 0.145 | 0.257 | 0.382 | 0.289 | 0.421 | 1.122 | 0.172 | 0.079 | 0.909 | 0.935 | 1.017 | 0.347 | 0.759 | 1.294 | 1.994 | 0.601 | 0.919 | 0.569 | 0.501 | 0.545 | 0.826 | 1.013 | 1.07 | 0.86 | 1.611 | 0.445 | 0.343 | 1.331 | 0.63 | 0.514 | 0.177 | 0.048 | 0.059 | 0.069 | 0.325 | 0.008 | 0.136 | 0.091 |
| Percentage of StockIssuedDuringPeriodValueStockOptionsExercised | 15.5 | 22.7 | 14.3 | 16.1 | 19.7 | 17.3 | 18.2 | 18.0 | 23.6 | 21.7 | 17.4 | 17.9 | 19.1 | 21.4 | 8.7 | 15.4 | 14.1 | 24.3 | 15.9 | 22.4 | 18.7 | 33.9 | 34.1 | 35.9 | 50.9 | 46.6 | 21.7 | 41.2 | 43.3 | 40.7 | 30.9 | 52.2 | 53.4 | 49.7 | 31.4 | 48.2 | 40.3 | 45.4 | 17.3 | 24.6 | 15.4 | 30.0 | 35.3 | 32.0 | 51.1 | 39.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 1.722 | 9.348 | 1.757 | 0.052 | 0.151 | 1.878 | 0.682 | 0.96 | 0.469 | 0.93 | 1.809 | 1.33 | 1.778 | 4.125 | 1.795 | 0.433 | 5.519 | 2.905 | 5.384 | 1.2 | 3.295 | 2.519 | 3.852 | 1.074 | 0.888 | 0.653 | 1.808 | 0.777 | 1.081 | 1.479 | 2.391 | 0.786 | 1.405 | 0.45 | 0.75 | 1.433 | 0.934 | 0.619 | 0.848 | 0.147 | 0.324 | 0.161 | 0.595 | 0.017 | 0.13 | 0.14 |
| Percentage of StockIssuedDuringPeriodValueStockOptionsExercised | 84.5 | 77.3 | 85.7 | 83.9 | 80.3 | 82.7 | 81.8 | 82.0 | 76.4 | 78.3 | 82.6 | 82.1 | 80.9 | 78.6 | 91.3 | 84.6 | 85.9 | 75.7 | 84.1 | 77.6 | 81.3 | 66.1 | 65.9 | 64.1 | 49.1 | 53.4 | 78.3 | 58.8 | 56.7 | 59.3 | 69.1 | 47.8 | 46.6 | 50.3 | 68.6 | 51.8 | 59.7 | 54.6 | 82.7 | 75.4 | 84.6 | 70.0 | 64.7 | 68.0 | 48.9 | 60.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 150000.0 | 151000.0 | 146000.0 | 148000.0 | 137000.0 | 184000.0 | 186000.0 | 186000.0 | 198000.0 | 261000.0 | 247000.0 | 262000.0 | 268000.0 | 285000.0 | 271000.0 | 284000.0 | 298000.0 | 267000.0 | 260000.0 | 267000.0 | 306000.0 | 263000.0 | 266000.0 | 287000.0 | 268000.0 | 235000.0 | 237000.0 | 240000.0 | 239000.0 | 220000.0 | 237000.0 | 237000.0 | 236000.0 | 66000.0 | 366000.0 | 187000.0 | 216000.0 | 207000.0 | 192000.0 | 187000.0 | 192000.0 | 39000.0 | 317000.0 | 163000.0 | 182000.0 | 176000.0 |
| Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 83000.0 | 65000.0 | 43000.0 | 38000.0 | 25000.0 | 95000.0 | 79000.0 | 80000.0 | 85000.0 | 100000.0 | 115000.0 | 131000.0 | 133000.0 | 145000.0 | 140000.0 | 147000.0 | 171000.0 | 150000.0 | 118000.0 | 102000.0 | 137000.0 | 123000.0 | 136000.0 | 169000.0 | 165000.0 | 141000.0 | 141000.0 | 155000.0 | 157000.0 | 143000.0 | 153000.0 | 169000.0 | 156000.0 | 42000.0 | 233000.0 | 120000.0 | 129000.0 | 105000.0 | 82000.0 | 98000.0 | 94000.0 | 21000.0 | 207000.0 | 100000.0 | 120000.0 | 113000.0 |
| Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued | 55.3 | 43.0 | 29.5 | 25.7 | 18.2 | 51.6 | 42.5 | 43.0 | 42.9 | 38.3 | 46.6 | 50.0 | 49.6 | 50.9 | 51.7 | 51.8 | 57.4 | 56.2 | 45.4 | 38.2 | 44.8 | 46.8 | 51.1 | 58.9 | 61.6 | 60.0 | 59.5 | 64.6 | 65.7 | 65.0 | 64.6 | 71.3 | 66.1 | 63.6 | 63.7 | 64.2 | 59.7 | 50.7 | 42.7 | 52.4 | 49.0 | 53.8 | 65.3 | 61.3 | 65.9 | 64.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 67000.0 | 86000.0 | 103000.0 | 110000.0 | 112000.0 | 89000.0 | 107000.0 | 106000.0 | 113000.0 | 161000.0 | 132000.0 | 131000.0 | 135000.0 | 140000.0 | 131000.0 | 137000.0 | 127000.0 | 117000.0 | 142000.0 | 165000.0 | 169000.0 | 140000.0 | 130000.0 | 118000.0 | 103000.0 | 94000.0 | 96000.0 | 85000.0 | 82000.0 | 77000.0 | 84000.0 | 68000.0 | 80000.0 | 24000.0 | 133000.0 | 67000.0 | 87000.0 | 102000.0 | 110000.0 | 89000.0 | 98000.0 | 18000.0 | 110000.0 | 63000.0 | 62000.0 | 63000.0 |
| Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued | 44.7 | 57.0 | 70.5 | 74.3 | 81.8 | 48.4 | 57.5 | 57.0 | 57.1 | 61.7 | 53.4 | 50.0 | 50.4 | 49.1 | 48.3 | 48.2 | 42.6 | 43.8 | 54.6 | 61.8 | 55.2 | 53.2 | 48.9 | 41.1 | 38.4 | 40.0 | 40.5 | 35.4 | 34.3 | 35.0 | 35.4 | 28.7 | 33.9 | 36.4 | 36.3 | 35.8 | 40.3 | 49.3 | 57.3 | 47.6 | 51.0 | 46.2 | 34.7 | 38.7 | 34.1 | 35.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 3.469 | 3.492 | 4.125 | 3.442 | 3.785 | 4.185 | 6.28 | 4.261 | 4.285 | 3.873 | 3.669 | 4.528 | 4.146 | 3.76 | 4.211 | 4.076 | 4.792 | 4.281 | 4.788 | 4.624 | 4.719 | 4.949 | 4.28 | 5.371 | 4.603 | 4.325 | 5.403 | 4.817 | 5.554 | 4.637 | 5.776 | 4.761 | 5.362 | 4.487 | 5.789 | 4.995 | 5.218 | 5.043 | 5.496 | 5.513 | 5.577 | 5.58 | 4.632 | 4.822 | 4.68 | 4.707 |
| Percentage of SuppliesExpense | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 0.061 | 4.027 | 4.201 | 0.106 | 0.073 | 59 | 0.161 | 0.221 | 0.028 | 4.086 | 50 | 20 | 0.26 | 5.951 | 0.907 | 10 | 0.251 | 4.028 | 2.178 | 0.608 | 0.701 | 12 | 2.285 | 0.793 | 0.07 | 5.309 | 1.883 | 0.693 | 0.298 | 2.867 | 0.95 | 0.801 | 0.094 | 1.656 | 14 | 0.778 | 2.618 | 2.666 | 0.707 | 5.053 | 2.009 | 1.373 | 1.325 | 2.343 | 2.25 | 2.961 |
| Percentage of TreasuryStockValueAcquiredCostMethod | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | -0.001 | 0.0 | -5.115 | 4.5 |
| Percentage of TreasuryStockValueAcquiredCostMethod | -0.0 | 0.0 | -7006.8 | 7.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 | 2010-03-31 |
| Value | 0.061 | 4.027 | 4.202 | 0.106 | 5.188 | 54 | 0.161 | 0.221 | 0.028 | 4.086 | 47 | 20 | 0.26 | 5.951 | 0.907 | 10 | 0.251 | 4.028 | 2.178 | 0.608 | 0.701 | 12 | 2.285 | 0.793 | 0.07 | 5.309 | 1.883 | 0.693 | 0.298 | 2.867 | 0.95 | 0.801 | 0.094 | 1.656 | 14 | 0.778 | 2.618 | 2.666 | 0.707 | 5.053 | 2.009 | 1.373 | 1.325 | 2.343 | 2.25 | 2.961 |
| Percentage of TreasuryStockValueAcquiredCostMethod | 100.0 | 100.0 | 100.0 | 100.0 | 7106.8 | 92.4 | 100.0 | 100.0 | 100.0 | 100.0 | 94.4 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | -1.2 | 15 | -1.4 |
| Percentage of UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 42 | 33 | 42 | 32 |
| Percentage of AccruedInterestReceivableOnDebtSecuritiesAvailableForSale | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 5600000.0 | 6700000.0 | 5300000.0 | 6800000.0 |
| Percentage of AccruedInterestReceivableOnDebtSecuritiesHeldToMaturity | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 200 | 172 | 154 | 133 | 122 | 109 | 94 | 94 | 86 | 79 | 79 |
| Percentage of AccumulatedAmortization | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 | 2011-12-31 | 2010-12-31 |
| Value | 341 | 330 | 320 | 300 | 288 | 268 | 246 | 247 | 237 | 223 | 226 |
| Percentage of AccumulatedDepreciation | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 |
| Value | 71 |
| Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesFairValueOfLongtermDebt | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 3.439 | 1.583 | 6.405 | 4.563 | 2.847 | 1.463 | 5.908 | 4.189 | 1.329 | 1.288 | 5.425 | 3.97 | 2.691 | 1.544 | 6.654 | 5.14 | 3414 | 1879 | 5603 | 4925 |
| Percentage of CommitmentsToExtendCreditForLoans | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 |
| Value | 97 | 29 |
| Percentage of DeferredTaxLiabilitiesNetUnrealizedGainOnSecuritiesAvailableForSale | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 |
| Value | 1969000.0 | 2455000.0 | 3002000.0 | 2580000.0 | 4507000.0 | 4328000.0 | 4311000.0 | 4439000.0 | 4505000.0 |
| Percentage of DeferredTaxLiabilitiesOriginalIssueDiscount | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 |
| Value | 6948000.0 | 2091000.0 | 3369000.0 | 1005000.0 | 3776000.0 | 3933000.0 | 7838000.0 | 6540000.0 |
| Percentage of DeferredTaxLiabilitiesPartnershipInvestment | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 |
| Value | 13 | 0.023 |
| Percentage of DeferredTaxLiabilitiesSecurities | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Value | 7.538 | 7.833 | 8.374 | 7.202 | 13 | 14 |
| Percentage of DeferredTaxLiabilitiesTrustPreferredSecurities | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2010-09-30 | 2010-06-30 |
| Value | 4981 | 3806 | 3066 | 1578 | 1685 | 1078 | 1196 | 134 | 852 | 1090 | 1028 | 635 | 92 | 649 | 1323 | 182 | 282 | 322 | 641 | 356 | 270 | 273 | 360 | 691 | 521 | 585 | 1342 | 824 | 143 | 684 | 2061 | 1335 | 583 | 1608 | 698 | 144 | 238 | 923 | 1013 | 187 | 1238 | 1870 | 677 | 467 | 446 |
| Percentage of DueFromFederalReserve | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 70 | 133 | 134 |
| Percentage of EquitySecuritiesWithReadilyDeterminableFairValues | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 |
| Value | 70 | 133 | 134 |
| Percentage of EquitySecuritiesWithReadilyDeterminableFairValues | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 50 | 33 | 41 | 49 | 56 | 67 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 17 | 11 | 9.916 | 16 | 19 | 22 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 34.4 | 32.8 | 23.8 | 33.1 | 35.1 | 32.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 4.813 | 5.456 | 5.429 | 5.626 | 5.655 | 5.608 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 9.6 | 16.2 | 13.0 | 11.4 | 10.1 | 8.3 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.023 | 0.023 | 0.069 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 0.0 | 0.0 | 0.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 16 | 1.674 | 0.242 | 0.274 | 0.538 | 1.011 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 32.7 | 5.0 | 0.6 | 0.6 | 1.0 | 1.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 11 | 15 | 25 | 27 | 30 | 38 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 23.1 | 45.8 | 62.3 | 54.7 | 53.5 | 57.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.092 | 0.073 | 0.088 | 0.088 | 0.208 | 0.184 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 0.2 | 0.2 | 0.2 | 0.2 | 0.4 | 0.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 1.934 | 2.188 | 4.086 | 4.407 | 6.511 | 7.977 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 3.9 | 6.5 | 9.8 | 8.9 | 11.6 | 11.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 15 | 8.872 | 5.83 | 11 | 13 | 14 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 30.6 | 26.3 | 14.0 | 24.2 | 23.5 | 20.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 1.883 | 1.974 | 2.047 | 2.151 | 2.015 | 2.082 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 3.8 | 5.9 | 4.9 | 4.4 | 3.6 | 3.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 2.764 | 3.301 | 3.17 | 3.267 | 3.426 | 3.351 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 5.5 | 9.8 | 7.6 | 6.6 | 6.1 | 5.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.166 | 0.181 | 0.212 | 0.208 | 0.214 | 0.175 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 0.3 | 0.5 | 0.5 | 0.4 | 0.4 | 0.3 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.023 | 0.023 | 0.069 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 0.0 | 0.0 | 0.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 16 | 0.234 | 0.242 | 0.245 | 0.466 | 0.907 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 32.7 | 0.7 | 0.6 | 0.5 | 0.8 | 1.3 |
| Period End | 2021-03-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 1.44 | 0.029 | 0.072 | 0.104 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 4.3 | 0.1 | 0.1 | 0.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.943 | 1.829 | 8.625 | 9.026 | 9.203 | 9.316 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 1.9 | 5.4 | 20.7 | 18.3 | 16.4 | 13.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 3.403 | 2.719 | 0.77 | 0.086 | 0.092 | 0.777 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 6.8 | 8.1 | 1.9 | 0.2 | 0.2 | 1.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 7.242 | 10 | 16 | 17 | 20 | 27 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 14.4 | 32.3 | 39.7 | 36.2 | 36.9 | 40.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.034 | 0.018 | 0.019 | 0.024 | 0.021 | 0.004 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 0.058 | 0.055 | 0.069 | 0.064 | 0.064 | 0.056 |
| Percentage of FinancingReceivableWithNoRelatedAllowanceForCreditLosses | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 |
| Value | 5.297 | 4.02 | 12 | 16 | 17 | 11 | 0.389 | 0.799 | 0.32 | 0.706 | 1.894 | 4.639 | 3.376 | 4.692 | 5.006 | 5.04 | 5.334 | 3.606 | 8.854 |
| Percentage of HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedGains | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 |
| Value | 4.555 | 6.858 | 1.566 | 0.819 | 0.457 | 0.76 | 8.4 | 3.876 | 8.425 | 15 | 24 | 23 | 20 | 17 | 14 | 21 | 19 | 18 | 3.021 |
| Percentage of HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedLosses | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 |
| Value | 1.748 | 1.703 | 3.402 | 3.345 | 4.251 | 2.785 | 0.374 | 0.524 | 0.587 | 12 | 0.467 | 0.237 | 0.226 | 0.258 | 3.111 | 2.756 | 2.239 | 1.964 | 2.376 |
| Percentage of HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedGains | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 |
| Value | 362000.0 | 137000.0 | 144000.0 | 118000.0 | 127000.0 | 135000.0 | 699000.0 | 482000.0 | 687000.0 | 671000.0 | 7988000.0 | 9363000.0 | 9188000.0 | 6386000.0 | 2834000.0 | 2652000.0 | 2089000.0 | 2262000.0 | 1474000.0 |
| Percentage of HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsUnrealizedLosses | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 |
| Value | 2.854 | 1.821 | 13 | 19 | 27 | 22 | 0.494 | 1.468 | 14 | 18 | 2.163 | 5.2 | 5.28 | 6.217 | 6.952 | 5.816 | 7.226 | 12 | 15 |
| Percentage of HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsUnrealizedGains | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 |
| Value | 24 | 31 | 13 | 9.782 | 9.215 | 2.925 | 25 | 10 | 24 | 40 | 72 | 83 | 80 | 76 | 51 | 84 | 88 | 89 | 31 |
| Percentage of HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsUnrealizedLosses | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 | 2017-09-30 | 2017-03-31 | 2016-12-31 |
| Value | 725000.0 | 15000.0 | 29000.0 | 23000.0 | 11000.0 | 20000.0 | 5000.0 | 30000.0 | 29000.0 | 41000.0 | 38000.0 | 3000.0 | 3000.0 | 2000.0 | 5000.0 |
| Percentage of HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearUnrealizedGains | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 |
| Value | 1081 | 1039 | 1012 | 1067 | 1111 | 1110 | 1116 |
| Percentage of HeldToMaturitySecuritiesNetOfAllowanceForCreditLosses | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 |
| Value | 77 | 54 | 43 | 35 | 28 | 30 | 29 | 23 | 23 | 22 | 18 | 33 | 20 | 21 | 28 | 39 | 49 | 51 | 74 | 96 | 109 | 128 | 162 | 155 | 177 | 180 | 196 | 157 | 111 | 85 | 32 |
| Percentage of InterestBearingOtherAccounts | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 2902 | 2338 | 1934 | 1815 |
| Percentage of InvestmentsInBankSubsidiaries | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 138 | 149 | 156 | 149 |
| Percentage of InvestmentsInNonBankSubsidiaries | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 3041 | 2488 | 2090 | 1965 |
| Percentage of InvestmentsInSubsidiaries | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2018-12-31 |
| Value | 16916 | 16507 | 16110 | 15961 | 15313 | 13959 | 13439 | 12181 |
| Percentage of LoansAndLeasesReceivableGrossCarryingAmountIncludedLoansHeldForSale | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2018-12-31 |
| Value | 17166 | 16820 | 16413 | 16323 | 15644 | 14291 | 13601 | 12190 |
| Percentage of LoansAndLeasesReceivableGrossCarryingAmountIncludedLoansHeldForSale | 101.5 | 101.9 | 101.9 | 102.3 | 102.2 | 102.4 | 101.2 | 100.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2018-12-31 |
| Value | 17166 | 16820 | 16413 | 16323 | 15644 | 14291 | 13601 | 12190 |
| Percentage of LoansAndLeasesReceivableGrossCarryingAmountIncludedLoansHeldForSale | 101.5 | 101.9 | 101.9 | 102.3 | 102.2 | 102.4 | 101.2 | 100.1 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 6424 | 5928 | 5266 | 4745 |
| Percentage of MortgageBackedSecuritiesAvailableForSaleAmortizedCost | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 | 2014-12-31 | 2013-12-31 | 2012-12-31 |
| Value | 21 | 18 | 23 | 36 | 40 | 89 | 51 | 12 | 68 |
| Percentage of NotionalAmountOfForeignCurrencyDerivativesGross | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 |
| Value | 3.638 | 4.852 | 3.16 | 1.155 | 3.301 | 5.32 | 4.46 | 2.042 | 4.842 | 4.496 | 1.892 | 4.248 | 4.987 | 5.059 | 0.000813 | 0.659 | 7.17 | 3.99 | 1.098 | 1.393 | 6.024 | 9.706 | 11 | 4.655 | 6.403 | 3.223 | 1.334 | 1.415 | 1.842 | 1.562 | 5.949 |
| Percentage of NotionalAmountOfOffBalanceSheetFinancialInstruments | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 |
| Value | 9835 | 9353 | 8851 | 8366 | 8426 | 7254 | 7409 | 7064 | 6975 | 6853 | 6870 | 6452 | 6146 | 6245 | 6.689467 | 6451 | 6363 | 6255 | 6471 | 6517 | 6406 | 6392 | 6671 | 5838 | 4464 | 4201 | 3509 | 3167 | 2736 | 2793 | 2690 |
| Percentage of NotionalAmountOfOffBalanceSheetFinancialInstruments | 270358.5 | 192780.5 | 280105.5 | 724397.0 | 255275.1 | 136353.8 | 166128.7 | 345950.4 | 144071.8 | 152431.3 | 363131.7 | 151890.4 | 123243.3 | 123449.4 | 822812.7 | 979020.6 | 88754.0 | 156790.0 | 589381.1 | 467878.1 | 106344.9 | 65860.0 | 57809.5 | 125414.2 | 69721.1 | 130357.1 | 263106.5 | 223844.4 | 148586.9 | 178844.7 | 45222.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2013-12-31 |
| Value | 3604 | 3537 | 3472 | 3422 | 3378 | 3285 | 3188 | 3079 | 3240 | 3186 | 3152 | 3071 | 3053 | 3007 | 2.975507 | 2952 | 2916 | 2865 | 2798 | 2735 | 2729 | 3049 | 2986 | 2910 | 2851 | 2752 | 2690 | 2384 | 2305 | 2215 |
| Percentage of NotionalAmountOfOffBalanceSheetFinancialInstruments | 99074.4 | 72904.5 | 109884.1 | 296302.5 | 102341.5 | 61761.0 | 71500.1 | 150824.0 | 66933.4 | 70875.6 | 166619.4 | 72300.8 | 61226.8 | 59455.3 | 365991.0 | 447961.2 | 40683.1 | 71817.9 | 254866.4 | 196373.8 | 45316.0 | 31415.2 | 25878.0 | 62516.6 | 44534.3 | 85396.4 | 201705.5 | 168495.6 | 125178.6 | 37237.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 |
| Value | 2.524 | 3.923 | 0.68 | 1.778 | 2.384 | 4.375 | 1.98 | 0.724 | 2.493 | 7.473 | 11 | 10 | 0.665 | 4.575 | 0.000628 | 1.185 | 1.887 | 3.309 | 3.725 | 4.145 | 6.35 | 2.084 | 10 | 9.46 | 6.39 | 67 | 14 | 1.425 | 1.01 | 1.342 | 8.001 |
| Percentage of NotionalAmountOfOffBalanceSheetFinancialInstruments | 69.4 | 80.9 | 21.5 | 153.9 | 72.2 | 82.2 | 44.4 | 35.5 | 51.5 | 166.2 | 591.1 | 238.0 | 13.3 | 90.4 | 77.2 | 179.8 | 26.3 | 82.9 | 339.3 | 297.6 | 105.4 | 21.5 | 90.0 | 203.2 | 99.8 | 2098.7 | 1103.5 | 100.7 | 54.8 | 85.9 | 134.5 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 |
| Value | 55 | 53 | 51 | 78 | 230 | 218 | 58 | 83 | 47 | 31 | 29 | 29 | 33 | 25 | 0.029007 | 46 | 48 | 51 | 49 | 64 | 64 | 42 | 75 | 53 | 90 | 123 | 144 | 66 | 29 | 16 | 21 |
| Percentage of NotionalAmountOfOffBalanceSheetFinancialInstruments | 1538.8 | 1093.7 | 1622.6 | 6819.7 | 6980.9 | 4111.8 | 1306.9 | 4071.9 | 973.7 | 691.3 | 1574.8 | 697.6 | 673.3 | 501.4 | 3567.9 | 7100.6 | 671.4 | 1282.9 | 4494.7 | 4595.3 | 1071.3 | 433.5 | 655.2 | 1155.0 | 1414.7 | 3837.0 | 10865.8 | 4730.7 | 1609.4 | 1075.7 | 361.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 |
| Value | 355 | 331 | 346 | 362 | 339 | 301 | 299 | 304 | 304 | 307 | 298 | 304 | 330 | 321 | 0.316054 | 305 | 321 | 334 | 376 | 381 | 382 | 352 | 360 | 378 | 364 | 355 | 375 | 374 | 385 | 387 | 356 |
| Percentage of NotionalAmountOfOffBalanceSheetFinancialInstruments | 9778.9 | 6823.0 | 10968.9 | 31355.6 | 10271.6 | 5665.7 | 6725.0 | 14916.9 | 6280.7 | 6843.6 | 15798.9 | 7165.4 | 6626.8 | 6359.9 | 38875.0 | 46397.0 | 4481.0 | 8377.7 | 34300.3 | 27371.4 | 6348.7 | 3632.0 | 3123.4 | 8132.4 | 5697.7 | 11026.7 | 28111.2 | 26438.8 | 20939.4 | 24832.8 | 5985.1 |
| Period End | 2020-09-30 |
| Value | 6.804 |
| Percentage of OtherMarketableSecuritiesFairValue | 100.0 |
| Period End | 2020-09-30 |
| Value | 6.804 |
| Percentage of OtherMarketableSecuritiesFairValue | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 157 | 151 | 132 | 103 | 81 | 78 | 66 | 65 | 57 | 58 | 59 |
| Percentage of OtherSecuritiesAmortizedCost | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| Percentage of OtherSecuritiesAmortizedCost | 21.0 | 22.0 | 25.0 | 32.3 | 41.0 | 42.3 | 50.1 | 51.0 | 58.1 | 56.6 | 55.6 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 117 | 117 | 99 | 69 | 47 | 45 | 33 | 32 | 23 | 25 | 26 |
| Percentage of OtherSecuritiesAmortizedCost | 74.7 | 78.0 | 75.0 | 67.7 | 59.0 | 57.7 | 49.9 | 49.0 | 41.9 | 43.4 | 44.4 |
| Period End | 2020-09-30 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 6.71 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.003 |
| Percentage of OtherSecuritiesAmortizedCost | 4.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 116000.0 | 210000.0 | 29000.0 | 5000.0 | 5000.0 | 8000.0 | 27000.0 | 0 | 2000.0 | 452000.0 | 0 |
| Percentage of OtherSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInvestments | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 107000.0 | 210000.0 | 29000.0 | 5000.0 | 5000.0 | 8000.0 | 27000.0 | 0 | 2000.0 | 452000.0 | 0 |
| Percentage of OtherSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInvestments | 92.2 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 0.0 | 100.0 | 100.0 | 0.0 |
| Period End | 2020-09-30 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 9000.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Percentage of OtherSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInvestments | 7.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 |
| Value | 254 | 298 | 296 | 159 | 154 | 135 | 108 | 88 | 89 | 75 | 73 | 65 | 66 | 67 | 65 | 63 | 65 | 67 | 68 | 66 | 66 | 64 | 65 | 68 | 77 | 67 | 68 |
| Percentage of OtherSecuritiesFairValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 |
| Value | 70 | 133 | 134 | 6.804 |
| Percentage of OtherSecuritiesFairValue | 27.6 | 44.9 | 45.3 | 4.3 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2014-12-31 |
| Value | 184 | 164 | 161 | 153 | 154 | 135 | 108 | 88 | 89 | 75 | 73 | 65 | 66 | 67 | 65 | 63 | 65 | 67 | 68 | 66 | 66 | 64 | 65 | 68 | 77 | 68 |
| Percentage of OtherSecuritiesFairValue | 72.4 | 55.1 | 54.7 | 95.7 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 254 | 298 | 296 | 159 | 154 | 135 | 108 | 88 | 89 | 75 | 73 | 65 | 66 | 67 | 65 | 63 | 65 | 67 | 68 | 65 |
| Percentage of OtherSecuritiesFairValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 159 | 154 | 135 | 108 | 88 | 89 | 73 | 65 | 66 | 65 |
| Percentage of OtherSecuritiesFairValue | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| Percentage of OtherSecuritiesFairValue | 20.8 | 21.6 | 24.6 | 30.7 | 37.7 | 37.2 | 45.1 | 51.0 | 50.0 | 50.5 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 119 | 120 | 101 | 75 | 52 | 51 | 36 | 26 | 28 | 27 |
| Percentage of OtherSecuritiesFairValue | 75.0 | 78.4 | 75.4 | 69.3 | 59.0 | 57.2 | 48.9 | 41.2 | 42.5 | 42.5 |
| Period End | 2020-09-30 | 2019-09-30 | 2019-06-30 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 6.804 | 2.914 | 4.952 | 4.385 | 5.091 | 5.018 | 4.64 |
| Percentage of OtherSecuritiesFairValue | 4.3 | 3.3 | 5.5 | 6.0 | 7.8 | 7.5 | 7.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 2.252 | 3.27 | 2.428 | 5.295 | 7.085 | 10 | 8.957 | 8.419 | 8.005 | 8.205 | 6.026 |
| Percentage of OtherSecuritiesGrossUnrealizedGainAccumulatedInvestments | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 2.149 | 3.27 | 2.428 | 5.295 | 4.171 | 5.753 | 4.009 | 4.034 | 2.914 | 3.187 | 1.389 |
| Percentage of OtherSecuritiesGrossUnrealizedGainAccumulatedInvestments | 95.4 | 100.0 | 100.0 | 100.0 | 58.9 | 53.7 | 44.8 | 47.9 | 36.4 | 38.8 | 23.1 |
| Period End | 2020-09-30 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 0.103 | 2.914 | 4.952 | 4.948 | 4.385 | 5.091 | 5.018 | 4.637 |
| Percentage of OtherSecuritiesGrossUnrealizedGainAccumulatedInvestments | 4.6 | 41.1 | 46.3 | 55.2 | 52.1 | 63.6 | 61.2 | 76.9 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2013-12-31 |
| Value | 29370 | 27616 | 26175 | 24051 | 23667 | 20190 | 20376 | 18342 | 18395 | 18467 | 18134 | 16696 | 15466 | 16231 | 16742 | 14875 | 14862 | 14824 | 15434 | 14297 | 14503 | 14380 | 13836 | 13805 | 13190 | 12286 | 12353 | 12191 |
| Percentage of SavingsAndDemandDeposits | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2013-12-31 |
| Value | 29370 | 27616 | 26175 | 24051 | 23667 | 20190 | 20376 | 18342 | 18395 | 18467 | 18134 | 16696 | 15466 | 16231 | 16742 | 14875 | 14862 | 14824 | 15434 | 14297 | 14503 | 14380 | 13836 | 13805 | 13190 | 12286 | 12353 | 12191 |
| Percentage of SavingsAndDemandDeposits | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 29370 | 27616 | 26175 | 24051 | 23667 | 20190 | 20376 | 18342 | 18395 | 18467 | 18134 | 16696 | 15466 | 16231 | 16742 | 14875 | 14862 | 14824 | 15434 | 13836 |
| Percentage of SavingsAndDemandDeposits | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 1.775 | 0.777 | 3.365 | 2.394 | 1.585 | 0.956 | 2.966 | 2.22 | 0.737 | 0.647 | 2.658 | 1.935 | 1.291 | 0.647 | 2.514 | 1.887 | 1281 | 673 | 2526 | 2550 |
| Percentage of StandbyLettersOfCredit | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 247 | 207 | 398 | 195 | 246 | 389 | 614 | 348 | 394 | 306 | 552 | 445 | 407 | 433 | 732 | 548 | 664 | 475 | 522 | 483 |
| Percentage of TimeDeposits250000OrMore | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 430 | 457 | 477 | 491 | 546 | 595 | 611 | 618 | 610 | 591 | 593 | 594 | 512 | 553 | 547 | 576 | 569 | 594 | 613 | 771 |
| Percentage of TimeDepositsLessThan250000 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-03-31 |
| Value | 1900000.0 |
| Percentage of UnamortizedCustomerRelationshipIntangibles | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 |
| Value | 71 | 69 | 62 | 59 | 53 | 55 | 58 | 53 | 49 | 50 | 52 | 50 | 54 | 53 | 53 |
| Percentage of AccountsReceivableNet | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 131 | 131 | 139 | 132 | 126 | 111 | 124 | 119 | 124 | 117 | 110 | 104 | 100 | 97 | 98 | 103 | 99 | 97 | 99 | 93 | 92 | 90 | 90 | 87 | 84 | 80 | 79 | 77 | 73 | 75 | 78 | 72 | 71 | 70 | 69 | 70 | 71 | 73 | 75 | 75 | 78 | 73 | 76 | 64 |
| Percentage of AccruedInvestmentIncomeReceivable | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Value | 67 | 58 | 46 | 49 |
| Percentage of AccruedLiabilitiesAndOtherLiabilities | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2015-06-30 | 2015-03-31 | 2014-12-31 | 2014-09-30 | 2014-06-30 | 2014-03-31 | 2013-12-31 | 2013-09-30 | 2013-06-30 | 2013-03-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2011-09-30 | 2011-06-30 | 2011-03-31 | 2010-12-31 | 2009-12-31 |
| Value | 254 | 239 | 319 | 255 | 239 | 216 | 232 | 223 | 198 | 142 | 177 | 171 | 147 | 129 | 191 | 193 | 161 | 142 | 172 | 163 | 149 | 116 | 161 | 168 | 155 | 135 | 180 | 161 | 131 | 118 | 153 | 130 | 117 | 152 | 182 | 191 | 169 | 148 | 186 | 181 | 166 | 145 | 145 | 107 |
| Percentage of AccruedLiabilitiesCurrentAndNoncurrent | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2017-12-31 |
| Value | 3000000.0 | 4300000.0 | 5600000.0 | 7000000.0 | 5800000.0 | 7400000.0 | 5600000.0 | 5800000.0 | 4600000.0 | 4800000.0 | 3400000.0 |
| Percentage of AlternativeInvestment | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 3.829 | 32 | 35 | 37 | 18 | 21 |
| Percentage of AssetsFairValueDisclosure | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 2.798 | 2.798 | 2.83 | 0.003 | 0.055 | 0.017 | 0.12 | 0.12 | 3.132 | 3.619 | 3.683 | 0.093 | 1.488 | 0.712 | 0.377 | 0.124 | 0.089 | 3.269 |
| Percentage of AssetsFairValueDisclosure | 7.8 | 7.5 | 15.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 |
| Value | 3.829 | 32 | 35 | 37 | 18 | 21 |
| Percentage of AssetsFairValueDisclosure | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2015-12-31 |
| Value | 2.798 | 2.798 | 2.83 | 0.003 | 0.055 | 0.017 | 0.12 | 0.12 | 3.132 | 3.619 | 3.683 | 0.093 | 1.488 | 0.712 | 0.377 | 0.124 | 0.089 | 3.269 |
| Percentage of AssetsFairValueDisclosure | 7.8 | 7.5 | 15.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2014-12-31 |
| Value | 3.829 | 32 | 38 | 40 | 21 | 21 | 5.194 | 19 | 2.652 | 16 | 13 | 14 | 13 | 22 | 16 | 18 | 15 | 17 | 23 | 20 | 15 | 25 | 26 | 24 | 5.33 |
| Percentage of AssetsFairValueDisclosure | 100.0 | 100.0 | 107.8 | 107.5 | 115.3 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2018-09-30 | 2018-06-30 | 2018-03-31 | 2017-12-31 | 2017-09-30 | 2017-06-30 | 2017-03-31 | 2016-12-31 | 2016-09-30 | 2016-06-30 | 2016-03-31 | 2015-12-31 | 2015-09-30 | 2014-12-31 |
| Value | 3.829 | 32 | 38 | 40 | 21 | 21 | 5.194 | 19 | 2.652 | 16 | 13 | 14 | 13 | 22 | 16 | 18 | 15 | 17 | 23 | 20 | 15 | 25 | 26 | 24 | 5.33 |
| Percentage of AssetsFairValueDisclosure | 100.0 | 100.0 | 107.8 | 107.5 | 115.3 | 100.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 |
| Value | 326 | 296 | 413 | 390 | 367 | 294 | 143 | 156 | 114 | 56 | 13 | 13 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 3.802 | 3.191 | 3.649 | 3.181 | 3.309 | 1.368 | 3.259 | 3.064 | 2.146 | 0.197 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 1.2 | 1.1 | 0.9 | 0.8 | 0.9 | 0.5 | 2.3 | 2.0 | 1.9 | 0.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 |
| Value | 142 | 140 | 202 | 208 | 200 | 171 | 58 | 66 | 49 | 23 | 6.145 | 1.914 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 43.7 | 47.3 | 49.1 | 53.3 | 54.4 | 58.2 | 40.4 | 42.7 | 43.0 | 41.6 | 44.0 | 13.8 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 |
| Value | 4.944 | 5.431 | 6.395 | 6.787 | 7.065 | 6.421 | 3.154 | 3.608 | 3.025 | 1.347 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 1.5 | 1.8 | 1.5 | 1.7 | 1.9 | 2.2 | 2.2 | 2.3 | 2.6 | 2.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 |
| Value | 174 | 146 | 199 | 171 | 156 | 114 | 78 | 82 | 59 | 30 | 7.643 | 11 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 53.4 | 49.5 | 48.3 | 43.9 | 42.5 | 38.8 | 54.8 | 52.6 | 51.6 | 54.6 | 54.7 | 86.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 |
| Value | 0.567 | 0.687 | 0.829 | 0.932 | 1.016 | 1.056 | 0.408 | 0.806 | 0.99 | 0.595 | 0.192 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.4 | 0.3 | 0.5 | 0.9 | 1.1 | 1.4 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 |
| Value | 41 | 95 | 1.711 | 3.048 | 0.757 | 8.307 | 20 | 18 | 27 | 77 | 141 | 89 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2017-12-31 |
| Value | 0.077 | 0.185 | 0.016 | 2.453 | 0.021 | 0.117 | 0.014 | 0.034 | 0.012 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | 0.2 | 0.2 | 0.9 | 29.5 | 0.1 | 0.6 | 0.1 | 0.0 | 0.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 |
| Value | 35 | 79 | 1.157 | 1.032 | 0.371 | 4.578 | 17 | 15 | 24 | 67 | 108 | 72 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | 85.5 | 83.1 | 67.6 | 33.9 | 49.0 | 55.1 | 83.3 | 86.0 | 91.4 | 86.4 | 76.6 | 80.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 |
| Value | 5.958 | 15 | 0.538 | 2.016 | 0.336 | 1.276 | 3.226 | 2.224 | 2.005 | 9.392 | 31 | 15 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | 14.2 | 16.4 | 31.4 | 66.1 | 44.4 | 15.4 | 15.7 | 12.1 | 7.4 | 12.1 | 22.3 | 17.7 |
| Period End | 2021-06-30 | 2021-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 |
| Value | 0.034 | 0.345 | 0.165 | 0.239 | 0.307 | 1.149 | 1.556 | 1.449 |
| Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | 0.1 | 0.4 | 0.8 | 1.3 | 1.1 | 1.5 | 1.1 | 1.6 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 | 2012-12-31 | 2012-09-30 | 2012-06-30 | 2012-03-31 | 2011-12-31 | 2010-12-31 |
| Value | 10062 | 9552 | 8887 | 8331 | 8116 | 7353 | 7323 | 7273 | 7089 | 6913 | 6670 | 6334 | 6802 | 6326 | 6201 | 6099 | 5979 | 5573 |
| Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2017-12-31 |
| Value | 148 | 93 | 77 | 59 | 56 | 179 | 185 | 173 | 125 | 44 | 13 |
| Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis | 1.5 | 1.0 | 0.9 | 0.7 | 0.7 | 2.4 | 2.5 | 2.4 | 1.8 | 0.6 | 0.2 |
| Period End | 2021-06-30 | 2021-03-31 | 2020-12-31 | 2020-09-30 | 2020-06-30 | 2020-03-31 | 2019-12-31 | 2019-09-30 | 2019-06-30 | 2019-03-31 | 2018-12-31 | 2017-12-31 |
| Value | 6424 | 5928 | 5266 | 4745 | 4549 | 4067 | 4030 | 3942 | 3976 | 3962 | 3914 | 3719 |
| Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis | 63.8 | 62.1 | 59.3 | 57.0 | 56.1 | 55.3 | 55.0 | 54.2 | 56.1 | 57.3 | 58.7 | 58.7 |
