CFR


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted
dei:LegalEntity
us-gaap:CapitalToRiskWeightedAssets

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxesPaid

us-gaap:InsuranceCommissionsAndFees

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestExpense

us-gaap:InterestIncomeExpenseNet
us-gaap:StatementBusinessSegments

us-gaap:NetIncomeLoss
us-gaap:ConsolidationItems, us-gaap:StatementOperatingActivitiesSegment
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:OtherComprehensiveIncomeLocation
us-gaap:StatementEquityComponents

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:Revenues
us-gaap:ConsolidationItems, us-gaap:StatementOperatingActivitiesSegment
us-gaap:StatementBusinessSegments

us-gaap:Assets
us-gaap:ConsolidatedEntities

us-gaap:Liabilities
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents
dei:LegalEntity
us-gaap:TierOneRiskBasedCapital
us-gaap:ConsolidatedEntities
us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:Land

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:FurnitureAndFixturesGross

us-gaap:LeaseholdImprovementsGross

us-gaap:ConstructionInProgressGross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssets

us-gaap:TimeDepositMaturitiesYearOne

us-gaap:OperatingLeaseLiability
us-gaap:BalanceSheetLocation

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:OtherComprehensiveIncomeLocation

us-gaap:TreasuryStockValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ConsolidationItems, us-gaap:StatementOperatingActivitiesSegment
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

cfr:AccretionOfLoanDiscount

cfr:ChargeOffOfPreviouslyRestructuresLoans

cfr:EstimatedIncrementalEffectofCECL

cfr:ImpactOfNewAccountingPronouncement
us-gaap:FinancialInstrument
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:Interchangeanddebitcardtransactionfees

cfr:NetIncomeLossAvailableToCommonStockAfterParticipatingSecuritiesAllocation

cfr:Netchangeinoperatingleaserightofuseasset

cfr:OperatingLeaseNonLeaseComponents

cfr:Operatingleaserightofuseassetamortization

cfr:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax

cfr:OtherComprehensiveIncomeLossTransfersfromAvailableforsaletoHeldtomaturitySecuritiesbeforeTax

cfr:OtherComprehensiveIncomeReclassificationAdjustmentForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax

cfr:Otherchargescommissionsandfees

cfr:PreferredStockDividendsEquivalentPerDepositaryShareDeclared
us-gaap:CreditFacility
cfr:RemainingRevolvingLoansConvertedToTermDuringPeriod
us-gaap:CreditFacility, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:Shorttermoperatingleaserentexpense

cfr:Taxexpensebenefitofsecuritiesgainslosses

cfr:Totaloperatingleaseexpenseexcludingrent

cfr:Trustandinvestmentmanagementfees

cfr:WeightedAverageStrikeRateOutstandingInterestRateCaps

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet

us-gaap:AvailableForSaleSecuritiesGrossRealizedGains

us-gaap:AvailableForSaleSecuritiesTransfersToTradingGainsLossesNet

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CurrentIncomeTaxExpenseBenefit

us-gaap:DebtAndEquitySecuritiesGainLoss
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesHeldToMaturityAllowanceForCreditLossPeriodIncreaseDecrease

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DepreciationAndAmortization
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DistributedEarnings

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:DividendsPreferredStockCash
us-gaap:StatementEquityComponents

us-gaap:EmployeeBenefitsAndShareBasedCompensation

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EquipmentExpense

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities

us-gaap:FederalDepositInsuranceCorporationPremiumExpense
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:GainLossOnSaleOfOtherAssets

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInPayablesToBrokerDealers

us-gaap:IncreaseDecreaseInTradingSecurities

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseFederalFundsPurchased

us-gaap:InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm

us-gaap:InterestExpenseJuniorSubordinatedDebentures

us-gaap:InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:InterestExpenseSubordinatedNotesAndDebentures

us-gaap:InterestIncomeDepositsWithFinancialInstitutions

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeFederalFundsSold

us-gaap:InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell

us-gaap:InterestIncomeSecuritiesPurchasedUnderAgreementsToResell

us-gaap:InterestIncomeSecuritiesTaxExempt

us-gaap:InterestIncomeSecuritiesTaxable

us-gaap:InterestPaid

us-gaap:InvestmentIncomeAmortizationOfDiscount

us-gaap:InvestmentIncomeAmortizationOfPremium

us-gaap:InvestmentIncomeNetAmortizationOfDiscountAndPremium

us-gaap:LaborAndRelatedExpense
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans

us-gaap:NoninterestExpense
us-gaap:StatementBusinessSegments

us-gaap:NoninterestIncome
us-gaap:StatementBusinessSegments

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:OccupancyNet

us-gaap:OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax
us-gaap:OtherComprehensiveIncomeLocation
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherNoncashIncome

us-gaap:OtherNoninterestExpense

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForRepurchaseOfRedeemablePreferredStock

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock
us-gaap:StatementClassOfStock
us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:PaymentsToAcquireAvailableForSaleSecurities

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:PreferredStockAccretionOfRedemptionDiscount
dei:LegalEntity
us-gaap:PreferredStockDividendRatePercentage
us-gaap:StatementClassOfStock

us-gaap:PreferredStockDividendsAndOtherAdjustments
us-gaap:StatementBusinessSegments

us-gaap:PreferredStockDividendsPerShareDeclared
us-gaap:StatementClassOfStock
us-gaap:ProceedsFromIssuanceOfPreferredStockAndPreferenceStock
dei:LegalEntity, us-gaap:DebtInstrument
us-gaap:ProceedsFromIssuanceOfTrustPreferredSecurities

us-gaap:ProceedsFromLifeInsurancePolicies

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfForeclosedAssets

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromStockOptionsExercised
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ProvisionForLoanAndLeaseLosses

us-gaap:ProvisionForLoanLeaseAndOtherLosses
us-gaap:StatementBusinessSegments
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ProvisionForLoanLossesExpensed
us-gaap:OtherComprehensiveIncomeLocation
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:Range, us-gaap:AwardType
us-gaap:Range, us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueTreasuryStockReissued
us-gaap:StatementEquityComponents

us-gaap:StockRedeemedOrCalledDuringPeriodShares

us-gaap:StockRedeemedOrCalledDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:TradingSecuritiesRealizedGain

us-gaap:TradingSecuritiesRealizedGainLoss

us-gaap:TransferToOtherRealEstate

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:UndistributedEarnings

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

cfr:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentPreTax
dei:LegalEntity
cfr:AdditionalTier1CapitalbeyondCommonEquityTier1

cfr:CECLTransitionAmount

cfr:COVID19LoanDeferment
dei:LegalEntity
cfr:CapitalRequiredforCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn
dei:LegalEntity
cfr:CapitalRequiredforCapitalAdequacytoRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn
us-gaap:InformationByCategoryOfDebtSecurity
cfr:CarryValueofSecuritiesPledged

cfr:CertificateOfDepositAccountRegistryServiceCdarsDeposits
dei:LegalEntity
cfr:CommonEquityTierOneCapitalRequiredForCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn
dei:LegalEntity
cfr:CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn

cfr:DebtSecuritiesHeldtoMaturityNetCarryingAmount
us-gaap:FinancialInstrument

cfr:DeferredTaxLiabilitiesDefinedBenefitPostRetirementBenefitPlans

cfr:DeferredTaxLiabilitiesNetUnrealizedGainOnSecuritiesAvailableForSaleAndtransferredSecurities

cfr:Deferredtaxassetleaseliabilitiesunderoperatingleases

cfr:Deferredtaxassetsdeferredloanandleaseoriginationfees

cfr:Deferredtaxliabilitiespartnershipinterest

cfr:Deferredtaxliabilityrightofuseassetsunderoperatingleases

cfr:DefinedBenefitPlanExpectedFutureBenefitPayments

cfr:DepositsPercentage
us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk
cfr:DerivativeAssetsNonmonetaryNotionalAmount
us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk
cfr:DerivativeLiabilitiesNonmonetaryNotionalAmount

cfr:Employeeservicesharebasedcompensationnotyetrecognizedperformancestockunits

cfr:ExpectedDefinedBenefitPlansContributionWithinOneYear
us-gaap:DerivativeInstrumentRisk
cfr:FairValueHedgeLoanLeaseInterestRateSwaps

cfr:FairValueOfForeclosedAssetsRemeasuredSubsequentToInitialRecognition

cfr:FinancialAssetsDerivativeAndResellAgreementsCollateralAmountNotOffset

cfr:FinancialAssetsDerivativeAssetsAndResellAgreementsNetOfAmountNotOffset

cfr:FinancialAssetsDerivativesAndRepurchaseAgreementsNet

cfr:FinancialAssetsDerivativesAndResellAgreementsNet

cfr:FinancialAssetsGross

cfr:FinancialInstrumentsAssetsDerivativesAndResellAgreementsNet

cfr:FinancialInstrumentsAssetsGross

cfr:FinancialInstrumentsDerivativeLiabilitiesAndRepurchaseAgreementsNetOfAmountNotOffset

cfr:FinancialInstrumentsLiabilitiesGross

cfr:FinancialLiabilitiesDerivativeAndRepurchaseAgreementsCollateralAmountNotOffset

cfr:FinancialLiabilitiesDerivativesAndRepurchaseAgreementsNet

cfr:FinancialLiabilitiesGross

cfr:ForeclosedAssetsRemeasuredSubsequenttoInitialRecognitionCarryingValueOfForeclosedAssetsPriorToRemeasurement

cfr:ForeclosedAssetsRemeasuredSubsequenttoinitialRecognitionWriteDownsIncludedInOtherNonInterestExpense
us-gaap:FairValueByFairValueHierarchyLevel
cfr:ImpairedFinancingReceivableRelatedAllowanceReversal
us-gaap:FairValueByFairValueHierarchyLevel
cfr:ImpairedFinancingReceivableReversalofSpecificValuationAllowanceAllocations
us-gaap:ConsolidatedEntities
cfr:InvestmentInSubsidiaries
us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk
cfr:NonHedgingInterestRateSwaps
us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk
cfr:NonHedgingInterestRateSwaps2

cfr:OtherComprehensiveIncomeNetActuarialGainLossExpectedToBeRecognized

cfr:PercentMunicipalBondPortfolioIssuedByPoliticalSubdivisionOrAgenciesWithinStateOfTexasGuaranteedByTexasPermanentSchoolFundOrHaveBeenPreRefunded
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfCommercialAndIndustrialLoansToLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfCommercialRealEstateConstructionLoansToLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfCommercialRealEstateLandLoansToLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfCommercialRealEstateLoanToLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfCommercialRealEstateMortgageLoansToLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfConsumerHomeEquityLoansToLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfConsumerRealEstateHomeEquityLinesOfCreditToLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfLoansAndLeasesReceivableConsumerOtherToLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfLoansAndLeasesReceivableConsumerRealEstateToLoans

cfr:PercentageOfLoansToLoans

cfr:PercentageOfNonInterestBearingDemandDepositsToDeposits
us-gaap:BalanceSheetLocation
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfOtherConsumerRealEstateLoansToLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfPaycheckProtectionProgramLoansToLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfRealEstateLoansToLoans
us-gaap:BalanceSheetLocation
cfr:PercentageOfTimeAccountsOf100000OrMoreToDeposits
us-gaap:BalanceSheetLocation
cfr:PercentageOfTimeAccountsToDeposits
us-gaap:BalanceSheetLocation
cfr:PercentageOfTimeAccountsUnder100000ToDeposits
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:PercentageOfTotalEnergyLoansToTotalLoansExcludingPPPLoans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:Percentageofenergyproductionloanstototalloans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:Percentageofenergyserviceloanstototalloans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:Percentageofotherenergyloanstototalloans
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:Percentageoftotalenergyloanstototalloans
dei:LegalEntity
cfr:PreferredStockValueIssuedIncludeForRegulatoryTierOneCapitalCalculations

cfr:PreviouslyRestructuredLoansPastDue

cfr:Remainingcontractualmaturityoftheagreementsovernightandcontinuous
us-gaap:FinancialInstrument

cfr:Remainingcontractualmaturityoftheagreementstotal
us-gaap:FinancialInstrument

cfr:Restructuredloansonnonaccrualstatusatperiodend

cfr:SegmentReportingAverageAssets
us-gaap:StatementBusinessSegments

cfr:TexasLeadingIndexEconomicConditionIndicator
dei:LegalEntity
cfr:TierOneLeverageCapitalRequiredforCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn
dei:LegalEntity
cfr:TierOneLeverageCapitalRequiredforCapitalAdequacytoAverageAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn
dei:LegalEntity
cfr:TierOneRiskBasedCapitalRequiredForCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn
dei:LegalEntity
cfr:TierOneRiskBasedCapitalRequiredforCapitalAdequacytoRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn

cfr:TotalDepositsAboveFDICInsuranceLimit
us-gaap:FinancialInstrument, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:Unfundedbalances
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LossContingenciesByNatureOfContingency

dei:EntityCommonStockSharesOutstanding

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability

us-gaap:AvailableForSaleSecurities
us-gaap:FairValueByAssetClass
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesAmortizedCost
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
us-gaap:FinancialInstrument

us-gaap:BankOverdrafts

us-gaap:BankOwnedLifeInsurance

us-gaap:BuildingsAndImprovementsGross
dei:LegalEntity
us-gaap:Capital
dei:LegalEntity
us-gaap:CapitalRequiredToBeWellCapitalized
dei:LegalEntity
us-gaap:CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets

us-gaap:CashAndDueFromBanks
us-gaap:ConsolidatedEntities

us-gaap:CashCashEquivalentsAndFederalFundsSold
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:CashCollateralForBorrowedSecurities

us-gaap:CashReserveDepositRequiredAndMade
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:CashSurrenderValueOfLifeInsurance
dei:LegalEntity
us-gaap:CommonEquityTierOneCapital
dei:LegalEntity
us-gaap:CommonEquityTierOneCapitalRatio
dei:LegalEntity
us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreAfter12Months

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreSixMonthsThrough12Months

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsOrLess

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsThroughSixMonths

us-gaap:CreditDerivativeMaximumExposureUndiscounted
us-gaap:DerivativeInstrumentRisk

us-gaap:DebtSecuritiesHeldToMaturityAllowanceForCreditLoss
us-gaap:FinancialInstrument

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBonuses

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssets

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

us-gaap:Deposits
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:DepositsForeign
us-gaap:BalanceSheetLocation
us-gaap:DepositsMoneyMarketDeposits
us-gaap:BalanceSheetLocation
us-gaap:DepositsSavingsDeposits
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation
us-gaap:DerivativeAssetNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash

us-gaap:DerivativeAssets
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument

us-gaap:DerivativeCollateralObligationToReturnCash
us-gaap:CounterpartyName

us-gaap:DerivativeCollateralObligationToReturnSecurities
us-gaap:CounterpartyName

us-gaap:DerivativeCollateralRightToReclaimCash
us-gaap:CounterpartyName

us-gaap:DerivativeCollateralRightToReclaimSecurities
us-gaap:CounterpartyName

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:FinancialInstrument

us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
us-gaap:CounterpartyName

us-gaap:DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
us-gaap:CounterpartyName

us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:FinancialInstrument

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
us-gaap:CounterpartyName

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
us-gaap:CounterpartyName
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeNet
us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue

us-gaap:DerivativeLiabilities
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument
us-gaap:CounterpartyName, us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation
us-gaap:DerivativeLiabilityNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeNotionalAmount

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:AwardType
us-gaap:Range, us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
us-gaap:AwardType
us-gaap:Range, us-gaap:AwardType
dei:LegalEntity
us-gaap:ExcessTierOneRiskBasedCapitalToRiskWeightedAssets
us-gaap:StatementBusinessSegments
us-gaap:FairValueDisclosureOffbalanceSheetRisksAmountAsset
us-gaap:FinancialInstrument
us-gaap:FairValueDisclosureOffbalanceSheetRisksAmountLiability
us-gaap:LossContingenciesByNatureOfContingency

us-gaap:FederalFundsPurchased
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FederalFundsSold

us-gaap:FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableNonaccrualNoAllowance
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancialInstrumentPerformanceStatus
us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancialInstrumentPerformanceStatus
us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancialInstrumentPerformanceStatus
us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancialInstrumentPerformanceStatus
us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancialInstrumentPerformanceStatus
us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancialInstrumentPerformanceStatus
us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentCurrent
cfr:ConsumerLoansYearofOrigination, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:CreditFacility, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentPastDue
cfr:ConsumerLoansYearofOrigination, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cfr:ConsumerLoansYearofOrigination, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:CreditFacility, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:CreditFacility, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancialInstrumentPerformanceStatus
us-gaap:FinancingReceivableRevolving
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:CreditFacility, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRevolvingConvertedToTermLoan
us-gaap:CreditFacility, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancialInstrumentPerformanceStatus
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk
us-gaap:ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk
us-gaap:ForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue

us-gaap:HeldToMaturitySecurities
us-gaap:CreditRatingMoodys, us-gaap:FinancialInstrument
us-gaap:CreditRatingMoodys, us-gaap:FinancialInstrument, us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesFairValue
us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ImpairedFinancingReceivableRecordedInvestment
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ImpairedFinancingReceivableRelatedAllowance

us-gaap:InterestBearingDepositLiabilities
us-gaap:BalanceSheetLocation

us-gaap:InterestBearingDepositsInBanks
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:InterestPayableCurrentAndNoncurrent
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:InterestReceivable
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:ConsolidatedEntities
us-gaap:InterestReceivableAndOtherAssets

us-gaap:JuniorSubordinatedNotes
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:LoansAndLeasesReceivableNetOfDeferredIncome

us-gaap:LoansAndLeasesReceivableNetReportedAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:LoansAndLeasesReceivableRelatedParties
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LoansReceivableFairValueDisclosure

us-gaap:NoninterestBearingDepositLiabilities
us-gaap:BalanceSheetLocation

us-gaap:OffBalanceSheetCreditLossLiability

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeasesFutureMinimumPaymentsDueCurrent

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInFiveYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInFourYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInThreeYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueInTwoYears

us-gaap:OperatingLeasesFutureMinimumPaymentsDueThereafter

us-gaap:OtherLiabilities
us-gaap:ConsolidatedEntities

us-gaap:OtherRealEstateAndForeclosedAssets

us-gaap:PercentageOfInterestBearingDomesticDepositsToDeposits
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation
us-gaap:PercentageOfInterestBearingDomesticDepositsToDepositsMoneyMarket
us-gaap:BalanceSheetLocation
us-gaap:PercentageOfInterestBearingDomesticDepositsToDepositsSavings
us-gaap:StatementClassOfStock
us-gaap:PreferredStockLiquidationPreferenceValue

us-gaap:PreferredStockValue

us-gaap:RelatedPartyDepositLiabilities

us-gaap:ResellAgreementsPeriodEndAmountsExcludingEffectsOfAgreementsReportedNetByCounterparty

us-gaap:SecuritiesBorrowedNotSubjectToMasterNettingArrangement

us-gaap:SecuritiesPurchasedUnderAgreementsToResellGross

us-gaap:SecuritiesSoldUnderAgreementsToRepurchase
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseGross

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseNotSubjectToMasterNettingArrangement
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:Range, us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:Range, us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:AwardType
us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:AwardType
us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchaseProgramAuthorizedAmount1

us-gaap:SubordinatedDebt
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
dei:LegalEntity
us-gaap:TierOneLeverageCapital
dei:LegalEntity
us-gaap:TierOneLeverageCapitalRequiredToBeWellCapitalized
dei:LegalEntity
us-gaap:TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets
dei:LegalEntity
us-gaap:TierOneLeverageCapitalToAverageAssets
dei:LegalEntity
us-gaap:TierOneRiskBasedCapitalRequiredToBeWellCapitalized
dei:LegalEntity
us-gaap:TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets

us-gaap:TimeDepositMaturitiesYearTwo

us-gaap:TimeDeposits
us-gaap:BalanceSheetLocation

us-gaap:TimeDeposits100000OrMore
us-gaap:BalanceSheetLocation

us-gaap:TimeDepositsAtOrAboveFDICInsuranceLimit
us-gaap:BalanceSheetLocation
us-gaap:TimeDepositsLessThan100000

us-gaap:TradingSecurities
us-gaap:FairValueByAssetClass
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument
us-gaap:ConsolidatedEntities, us-gaap:LongtermDebtType
us-gaap:UnamortizedDebtIssuanceExpense
us-gaap:LongtermDebtType

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Allocated Share Based Compensation Expense
Balance Sheet
Intangible Assets Net Excluding Goodwill
Assets
Derivative Assets
NonCurrent Assets
Intangible Assets Net Excluding Goodwill
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Derivative Liabilities
Stockholders Equity
Common Stock Value
Per Share
Common Stock Dividends Per Share Cash Paid
CashFlow
Payments To Acquire Property Plant And Equipment
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Payments To Acquire Property Plant And Equipment
NetCashProvidedByUsedInFinancingActivities
Payments For Repurchase Of Common Stock
DividendsAndRepurchase
Payments For Repurchase Of Common Stock
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
BanksAndOrInsurance
Interest And Dividend Income Operating
AssetsBanks
Federal Funds Sold And Securities Purchased Under Agreements To Resell
LiabilitiesBanks
Deposits

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ██████████████████▇▇▇▇▇▇▇▇▇▇▇▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▁▁0.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.640.6370.6370.6370.6370.6370.6370.6370.6370.6370.6370.6370.6170.6170.6170.6160.6160.6150.6150.6140.6140.6130.6130.6130.6130.6110.6080.6060.605
us-gaap:EarningsPerShareBasic ██▅▆▆▁▇▇▇███▇▇▆▅▅▄▄▄▃▃▂▄▃▃▃▄▃▂▃▂▂▂▂▂▂▃▂▂▂▂▂▂▂▁1.811.781.39000000000000011.51.470.751.60999999999999941.741.731.81.83999999999999991.81.71.631.541.431.31.291.29000000000000051.241.121.070.89999999999999951.181.121.111.121.21.030.971.00.960.950.910.980.950.940.990.90999999999999970.890.910.850.87000000000000010.90.870.79
us-gaap:EarningsPerShareDiluted ██▅▆▆▁▇▇▇███▇▇▆▅▅▄▄▄▃▃▂▄▃▃▃▄▃▂▃▂▂▂▃▂▂▃▂▂▂▂▂▂▂▁1.81.771.38999999999999971.51.470.751.59999999999999961.731.721.791.82000000000000031.781.681.611.52999999999999981.411.291.281.28000000000000021.241.111.070.89000000000000011.171.111.11.10999999999999991.191.020.960.98999999999999980.960.940.910.980.950.940.990.89999999999999990.890.910.850.87000000000000010.90.870.79
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity cfr:CullenFrost███▇▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1.6170000000000003e-051.607e-051.5439999999999998e-051.469e-051.4430000000000001e-071.397e-071.457e-071.463e-071.4599999999999998e-071.4680000000000002e-071.509e-071.544e-071.529e-071.536e-071.515e-071.519e-071.565e-071.562e-071.493e-071.4860000000000002e-071.4360000000000002e-071.439e-071.385e-071.396e-071.406e-071.393e-071.455e-071.481e-071.476e-071.538e-071.579e-071.568e-071.5390000000000002e-071.544e-071.5110000000000002e-071.562e-071.561e-071.61e-071.624e-071.6569999999999998e-071.642e-07NA1.591e-07NANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity cfr:FrostBank████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1.43e-051.425e-051.376e-051.376e-051.363e-071.3189999999999998e-071.34e-071.353e-071.3420000000000002e-071.334e-071.381e-071.377e-071.367e-071.377e-071.3719999999999998e-071.384e-071.374e-071.377e-071.374e-071.385e-071.362e-071.367e-071.3020000000000001e-071.303e-071.276e-071.257e-071.299e-071.321e-071.314e-071.3039999999999998e-071.312e-071.358e-071.3539999999999998e-071.366e-071.343e-071.393e-071.398e-071.448e-071.454e-071.4890000000000002e-071.481e-07NA1.4430000000000001e-07NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 EBT Margin us-gaap:StatementBusinessSegments cfr:Bank█▁307.394295.985NANA290.185419.429NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:StatementBusinessSegments cfr:FrostWealthAdvisors█▁43.04240.095NANA35.60440.607NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AllocatedShareBasedCompensationExpense ██▁▇██▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆3.2452.526-7.4572.4433.2722.5120.00.00.780.00.0010.00.720.00.00.00.5190.00.00.00.520.00.00.00.480.00.0010.00.440.00.00.00.330.0NANANANA0.00.00.33NA0.00.00.3NA
us-gaap:ComprehensiveIncomeNetOfTax ▆▃▅▅▇▆▅▇▇█▇▄▅▃▆▅▆▅▁▄▆▆▄▆▃▅▅▅▅▅▄▄▄▄▄▅▅▄▅▅▅▄▃▅▅▄143.31-9.20796.095111.937217.521151.19865.668197.781237.25273.87196.88839.928101.376-35.921122.36199.496142.713103.714-156.41714.375173.517134.23538.185127.469-4.74590.46859.24272.42384.1963.50257.27850.5690.89531.5123.51380.11766.94157.69559.09595.971103.45752.496-43.93990.471104.6657.617
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▇▅▅▄▁▇▇▇███▇▇▆▅▅▅▄▄▃▃▁▄▄▃▄▄▃▂▃▂▂▂▃▃▂▃133.149123.91296.915104.57291.75858.076117.192125.366126.46130.451132.863133.004125.177117.637109.607103.02399.39196.34292.24791.07179.88578.20861.89587.9885.67984.24588.23394.62279.88573.28477.33272.41372.35768.77980.175.7474.08978.546NANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▆▄▄▄▁▂▅▅▆▅▅▆▅▄▄▄▅▅▄▄▄▄▂▅▅▅▆▆▅▅▆▅▅▅▇▆▆▆▇█▅▅▅▆▆▅15.0817.8978.6459.516-1.3143.32313.51113.5314.87413.95513.6115.1613.83611.1579.0839.89213.83811.4018.52810.8528.4069.4293.65712.1312.60212.08215.52917.00713.41512.09614.76111.96912.69413.59119.91217.07116.02717.51318.73623.65413.65712.65313.75915.19915.62412.994
us-gaap:IncomeTaxesPaid NANA0.011.96632.1740.03.010.49431.8580.00.01.2243.8880.014.3919.16822.8010.011.26713.18125.9790.021.78613.022.30.017.7917.99827.1880.06.5710.32132.6230.020.18924.814NANA18.82523.206NANA15.47919.372NANA
us-gaap:InsuranceCommissionsAndFees ▃▇▄▄▃▇▄▄▃█▄▄▃▇▄▃▃▅▄▄▃▆▄▄▃▆▃▄▃▅▃▃▂▅▂▃▂▄▁▃▂▃▁▂▁▄10.77317.31311.70411.45610.66816.48512.13811.68310.11818.40611.39411.03710.55615.9811.72810.8929.72813.82111.34211.0299.3615.42312.39811.76310.1314.63510.81811.3489.82313.12610.43310.3719.26613.078.4369.9649.17112.3777.459.5697.90810.4946.7778.5887.51211.138
us-gaap:InterestAndFeeIncomeLoansAndLeases ▇▆▆▆▇▇▇███▇▇▆▅▄▄▄▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▂▁▁▁▁▁▁▁▁▁▁▁182.695167.483167.62169.002171.305172.137179.757186.87189.848185.272181.334172.333164.133151.202142.731138.4131.073122.6117.791114.368113.349112.586109.014111.087108.105105.666109.96116.415110.268104.315105.509104.349103.316102.056104.034101.64398.33697.35199.81999.73799.81198.488101.753102.874102.512102.512
us-gaap:InterestExpense ▂▂▂▂▂▅▆███▇▆▅▃▃▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▃▃▃▃▃▄5.8785.736.6497.7439.18321.45926.95633.26634.70634.85231.99627.05120.68113.57810.3818.3754.4863.2833.2652.9822.9492.882.9633.1073.1233.6713.8333.9073.4263.3714.6615.4985.8375.9496.3876.6276.5797.1588.1899.41811.811.83412.61313.27213.41814.577
us-gaap:InterestIncomeExpenseNet █▇▇▇▇▇███▇█▇▇▆▆▆▆▅▅▄▄▄▄▄▄▄▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁257.156240.881242.246243.423245.811244.521251.098253.007253.431246.469249.209241.665237.27229.748223.914219.211214.788208.509201.603194.507190.502189.724186.139186.981182.809180.703178.992177.978169.629160.335159.208155.353153.181152.813154.405151.532149.217149.707150.323145.361144.333141.759141.563142.416141.896137.584
us-gaap:NetIncomeLoss ██▅▆▅▂▆▇▇███▇▇▆▅▅▅▅▄▃▃▂▄▃▃▃▄▃▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▁▁118.068116.01588.2795.05693.07254.753103.681111.836111.586116.496119.253117.844111.341106.48100.52493.13185.55384.94183.71980.21971.47968.77958.23875.8573.07772.16372.70477.61566.4761.18862.57160.44459.66355.18860.18858.66958.06261.03355.41454.50755.68651.92853.05154.99552.947.818
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ██▅▆▆▁▆▇▇███▇▇▆▅▅▅▄▄▃▃▂▄▃▃▃▄▃▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂116.399113.86488.2795.05693.07247.223101.665109.82109.571114.48117.237115.828109.326104.46498.50891.11583.53882.92581.70378.20369.46466.76356.22273.83471.06270.14770.68875.59964.45559.17260.55558.42956.97555.05159.97858.48157.87760.84355.24454.36155.4851.72252.8454.7852.693NA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▆▃▅▆▇▇▅▇▇█▇▄▅▃▆▅▆▆▁▄▇▆▅▆▄▆▅▅▆▅▅▅▄▅▅▆▅▅▅▆25.242-125.2227.82516.881124.44996.445-38.01385.945125.664157.37477.635-77.916-9.965-142.40121.8376.36557.1618.773-240.136-65.844102.03865.456-20.05351.619-77.82218.305-13.462-5.19217.722.314-5.293-9.875-58.768-23.678-36.67521.4488.879-3.3383.68141.464NANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▆▆▆▆▆▆▆▆██▁█████████████████▇▇▇▇▇▇▇▇▇19.84919.99320.8319.81217.5822.65123.45422.941336.069343.254-887.665329.322322.336321.193313.989300.826295.868292.209295.037276.621268.519285.867269.294270.359261.791263.918261.634258.84248.779237.825237.746229.344225.69230.593230.292222.69218.98NANANANANANANANANA
us-gaap:Revenues ▅▄▄▄▄█▅▅▄▅▄▄▄▄▄▃▃▃▃▃▂▃▂▃▂▂▂▂▂▂▂▁▁▁▁▁▁348.403334.117333.583327.024323.412457.436346.353342.231336.069343.254336.327329.322322.336321.193313.989300.826295.868292.209295.037276.621268.519285.867269.294270.359261.791263.918261.634258.84248.779237.825237.746229.344225.69230.593230.292222.69218.98NANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets █▇▇▆▆▅▅▅▅▄▅▄▄▄▅▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁46697.67344046.78742391.31740101.2439377.55334147.30534027.42833098.17631818.86331664.56632292.96631223.40230687.21431459.23231747.8830989.97230206.31430524.70530196.31929602.91228976.24928400.08628567.11828341.35227781.59328158.98228277.77527370.63326523.43924685.08524312.93923529.7622571.51422497.72123124.06921847.54120866.22620417.18120317.24519489.64218478.38617941.64417617.09217738.12617059.87916760.98
us-gaap:Liabilities █▇▇▆▆▅▅▅▄▄▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁42323.85639778.86938098.30136016.21435368.75230320.63930115.7629216.71928077.55628070.98828924.04927915.15627377.70228215.80228450.01727800.92926982.38527427.32727193.79126441.11625839.58125407.84625676.77525436.37924909.92625248.05125426.37224552.78123752.76522119.16621798.77821048.59220143.67620054.3920706.58719428.92418503.61518096.46818033.70817242.76616301.74115844.29315555.41215621.98915019.02814811.74
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▆▆▅▅▅▅▄▅▄▄▄▅▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁46697.67344046.78742391.31740101.2439377.55334147.30534027.42833098.17631818.86331664.56632292.96631223.40230687.21431459.23231747.8830989.97230206.31430524.70530196.31929602.91228976.24928400.08628567.11828341.35227781.59328158.98228277.77527370.63326523.43924685.08524312.93923529.7622571.51422497.72123124.06921847.54120866.22620417.18120317.24519489.64218478.38617941.64417617.09217738.12617059.87916760.98
us-gaap:StockholdersEquity ███▇▇▆▇▇▆▆▅▅▅▅▅▅▅▄▄▅▄▄▄▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁4373.8174267.9184293.0164085.0264008.8013826.6663911.6683881.4573741.3073593.5783368.9173308.2463309.5123243.433297.8633189.0433223.9293097.3783002.5283161.7963136.6682992.242890.3432904.9732871.6672910.9312851.4032817.8522770.6742565.9192514.1612481.1682427.8382443.3312417.4822418.6172362.6112320.7132283.5372246.8762176.6452097.3512061.682116.1372040.8511949.24
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity cfr:CullenFrost██▇▇▆▆▇▆▆▆▆▆▅▅▅▅▅▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁3385.1033304.213203.8993003.0292940.4932884.3853001.7362932.7992877.8632855.0322786.9612803.1312725.6822648.8052570.5342489.9192530.0712459.5452383.6722302.2242210.1212166.5742163.9362157.432174.6352135.1882186.2762134.6552083.8242008.4771958.3361921.8041857.8671813.8121763.5211727.1491691.6721657.7631625.2811591.4361561.794NA1494.375NANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity cfr:FrostBank██▇▇▇▇▇▇▇▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁3166.2993104.4923030.0933010.292977.6722924.0822958.3262910.4462841.1652784.7862743.9732683.1962621.1882560.8282518.9992461.0042401.5542347.4462296.482252.7282207.9672168.6312131.362111.1132064.6812018.0461979.4151932.5261882.6781738.1541707.3071701.9781674.1241646.4631625.9911599.7981574.8651550.7551531.7741507.551485.461NA1432.661NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities srt:ParentCompanyNANA381.24NANANA267.116NANANA236.397NANANA265.301NANANA289.124NANANA206.534NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Land NANA128.739NANANA112.818NANANA104.045NANANA107.249NANANA106.505NANANA111.925NANANA102.334NANANA97.095NANANA105.004NANANA103.359NANANA93.616NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA1347.943NANANA1279.278NANANA802.968NANANA751.923NANANA722.849NANANA760.396NANANA625.636NANANA611.625NANANA608.621NANANA609.072NANANA595.764NANANA
us-gaap:FurnitureAndFixturesGross NANA243.395NANANA226.925NANANA196.871NANANA179.424NANANA167.723NANANA136.983NANANA103.603NANANA212.169NANANA201.843NANANA196.681NANANA196.234NANANA
us-gaap:LeaseholdImprovementsGross NANA183.827NANANA156.144NANANA83.32NANANA74.314NANANA67.54NANANA64.446NANANA60.902NANANA61.221NANANA59.489NANANA56.531NANANA54.221NANANA
us-gaap:ConstructionInProgressGross NANA41.202NANANA44.251NANANA45.456NANANA11.107NANANA19.508NANANA81.991NANANA118.367NANANA10.074NANANA3.503NANANA4.269NANANA7.605NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA302.365NANANA267.331NANANA250.638NANANA230.965NANANA197.028NANANA201.272NANANA182.748NANANA298.294NANANA292.687NANANA290.03NANANA278.855NANANA
us-gaap:AmortizationOfIntangibleAssets ▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▃▃▃▃▄▄▅▅▅▅▆▆▅▄▄▅▅▅▅▆▆▆▆▇▇▇▇███0.1850.2020.2080.2120.2410.2570.2640.2740.3050.3250.3310.3360.3690.3880.4020.4050.4380.4580.560.5860.6190.6640.7660.8160.8490.8940.9961.0290.8060.6890.7530.780.7880.820.9180.9730.9941.0111.0521.1081.1071.121.2171.2761.2991.333
us-gaap:PropertyPlantAndEquipmentNet ███████▇▇▅▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1031.8531040.5721045.5781055.0641044.2611035.8811011.947987.503915.497750.256552.33541.236539.861521.202520.958520.639520.253521.092525.821564.372564.199556.988559.124540.388525.692487.49442.888397.429369.158320.701313.331306.638306.069303.321315.934317.197319.904321.681319.042321.517316.165313.233316.909315.259318.921322.721
us-gaap:Goodwill █████████████████████████████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁654.952654.952654.952654.952654.952654.952654.952654.952654.952654.952654.952654.952654.952654.952654.952654.952654.952654.952654.952654.668654.668654.668654.668654.668654.668654.668653.95653.849649.02536.649536.649535.509535.509535.509535.509535.509535.56535.56528.072528.072528.072527.684527.684527.684527.684527.684
us-gaap:IntangibleAssetsNetExcludingGoodwill NANANA1.7711.9832.2242.4812.7453.0193.3243.6493.984.3164.6855.0735.4755.886.3186.7766.9317.5178.1368.89.56610.38211.23112.12513.12115.75.6566.3455.7596.5397.3278.1479.06610.03911.03310.60411.65612.76413.21514.33515.55216.82818.127
us-gaap:FiniteLivedIntangibleAssetsNet ▁▄█1.1761.3611.563NANANA2.481NANANANANANANANANANANANANANANANANA10.38211.23112.12513.12115.75.6566.3455.7596.5397.3278.147NANANA10.604NANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▇████████▅▁281.9287.5292.087298.6304.9302.0297.736299.5284.5165.50.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:TimeDepositMaturitiesYearOne NANA979.825NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ███▇▇▆▇▇▆▆▅▅▅▅▅▅▅▄▄▅▄▄▄▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁4373.8174267.9184293.0164085.0264008.8013826.6663911.6683881.4573741.3073593.5783368.9173308.2463309.5123243.433297.8633189.0433223.9293097.3783002.5283161.7963136.6682992.242890.3432904.9732871.6672910.9312851.4032817.8522770.6742565.9192514.1612481.1682427.8382443.3312417.4822418.6172362.6112320.7132283.5372246.8762176.6452097.3512061.682116.1372040.8511949.24
us-gaap:CommonStockValue ██████████████████▇▇▇▇▇▇▇▇▇▇▇▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▁▁0.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.640.6370.6370.6370.6370.6370.6370.6370.6370.6370.6370.6370.6170.6170.6170.6160.6160.6150.6150.6140.6140.6130.6130.6130.6130.6110.6080.6060.605
us-gaap:AdditionalPaidInCapitalCommonStock █████████▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▆▃▃▃▂▂▃▃▂▂▂▂▂▂▂▁▁▁1002.939999.694997.168991.477989.034985.762983.25977.997975.322970.958967.304962.917960.121956.536953.361951.893948.593926.005906.732905.348902.892899.87897.35895.035892.563889.112886.476883.121879.58727.677724.197719.972686.92684.141702.968698.038692.625688.15680.803676.079673.62668.237657.335640.398628.227613.989
us-gaap:RetainedEarningsAccumulatedDeficit ███▇▇▇▇▇▇▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁2862.9662797.0642750.7232724.6812678.6862635.5882667.5342617.52558.2962495.2682440.0022369.2592297.0992234.3012187.0692133.2592078.8982032.0971985.5691942.5611914.0221878.9851845.1881823.0451783.2221747.9581710.3241672.5271630.7991599.3371575.2821546.1011524.6381500.0851475.8511445.2411416.0971387.5531354.7591327.5871301.2791273.8261249.4841223.8911196.2541170.642
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▇███▆▅▆▅▄▂▁▂▂▃▃▃▂▂▅▆▄▄▄▃▄▄▄▄▄▄▄▄▅▅▅▅▅▅▅▅▄▄▅▅▄412.99387.748512.97505.145488.264363.815267.37305.383219.43893.774-63.6-141.235-63.319-53.35479.51257.67551.31-5.85-24.623215.513281.357179.319113.863133.91682.297160.119141.814155.276160.468142.748140.434145.727155.602214.37238.048274.723253.275244.396247.734244.053202.589154.818154.25251.24215.764164.004
us-gaap:TreasuryStockValue ▃▄▆▇▇█▇██▆▆▂▂▃▄▅▁▁▁▃▆▆▆▅▂▂▂▃▃▃▄▄51.17262.682113.939136.919147.825159.141151.614164.551156.877111.55119.91727.82329.51739.18167.20798.9120.00.010.27346.749106.726111.057111.18192.14631.53831.38132.33438.19545.29648.94670.85575.735NANA0.0NANANA0.3721.4561.4560.143NANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▃▂█▂▃▂▇▂▅▄▅▂▄▃▄▂▃▃▄▂▃▂▆▁▂▂▇▁▂▁▆▁▂▁▆▂▂▂█▂▄▄▅▃▃▄3.2452.5265.6912.4433.2722.5125.2532.6754.3643.6544.3872.7963.5853.1754.02.7223.1883.1033.8012.5212.9952.4825.0582.3422.7752.5625.5652.2422.562.1364.6532.3252.6432.3424.8942.5442.8432.5555.9472.4333.8463.7374.4453.4223.413.648
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▆▃▇▁▇▃█▅▅▄128.825219.76549.145268.138-41.968248.92848.894293.281145.783146.132102.22NANANANANANANANANANANANANANANANANANANANANANANANA101.76865.545101.9115.02993.66994.43471.237141.827124.91972.60185.186
us-gaap:NetCashProvidedByUsedInInvestingActivities █▅█▅▁▇▅▅▅▄▅1164.832-402.029936.582-489.43-2469.196390.997-178.573-252.252-170.46-785.465-509.447NANANANANANANANANANANANANANANANANANANANANANANANA-531.487-258.232-925.277-2323.26107.453240.312-479.796-150.929-457.731-133.534342.375
us-gaap:NetCashProvidedByUsedInFinancingActivities ▅▄▅▃█▂▃▃▂▁▃2088.4691695.682127.446797.4044915.147-232.5211009.959921.462-311.367-1034.992943.517NANANANANANANANANANANANANANANANANANANANANANANANA886.644359.20444.509728.462865.678387.144286.253-22.805536.883150.009410.697
us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease █▅█▄▇▄▅▅▃▁▄▃▁▃▃▅▂▄▄▄▃▄▃▄▃▃▂▄▃▄▄▅▃▃▄▄▄▂▁▅▄▃▃▄▃▄3382.1261513.4163113.173576.1122403.983407.404880.28962.491-336.044-1674.325536.29104.019-1365.478-372.099-38.8561385.588-822.858387.728146.057630.165-498.24271.94-163.382486.359-576.218-519.359-936.33279.843-157.521622.006236.0641418.706-317.105-306.519772.803456.925166.517-778.858-1579.7691066.8721.89-122.306-31.907204.07189.076838.258
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▄▄▃█▁▁▅▄▄▄▅▅▅▅▃▃▄▃▄▃▃▃▃▃▃▃▄▃▃▃▄▄▄▃▃▄▃▃▄▄▄▄▄▄▄▄1.0164.172-7.02943.13-25.844-26.0899.239-0.950.369-1.04413.72516.31212.47510.411-4.988-5.3320.128-4.3010.031-1.996-5.238-4.395-6.825-4.83-3.656-3.7483.194-2.784-2.607-1.9333.0082.010.379-2.118-1.385-1.043-1.438-2.5398.304-0.3820.384-0.1395.5220.528-1.013-0.393
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▆▃▇▁▇▃█▅▅▄128.825219.76549.145268.138-41.968248.92848.894293.281145.783146.132102.22NANANANANANANANANANANANANANANANANANANANANANANANA101.76865.545101.9115.02993.66994.43471.237141.827124.91972.60185.186
us-gaap:NetIncomeLoss ██▅▆▅▂▆▇▇███▇▇▆▅▅▅▅▄▃▃▂▄▃▃▃▄▃▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▁▁118.068116.01588.2795.05693.07254.753103.681111.836111.586116.496119.253117.844111.341106.48100.52493.13185.55384.94183.71980.21971.47968.77958.23875.8573.07772.16372.70477.61566.4761.18862.57160.44459.66355.18860.18858.66958.06261.03355.41454.50755.68651.92853.05154.99552.947.818
us-gaap:ShareBasedCompensation ▃▂█▂▃▂▇▂▅▄▅▂▄▃▄▂▃▃▄▂▃▂▆▁▂▂▇▁▂▁▆▁▂▁▆▂▂▂█▂▄▄▅▃▃▄3.2452.5265.6912.4433.2722.5125.2532.6754.3643.6544.3872.7963.5853.1754.02.7223.1883.1033.8012.5212.9952.4825.0582.3422.7752.5625.5652.2422.562.1364.6532.3252.6432.3424.8942.5442.8432.5555.9472.4333.8463.7374.4453.4223.413.648
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities █▅█▅▁▇▅▅▅▄▅1164.832-402.029936.582-489.43-2469.196390.997-178.573-252.252-170.46-785.465-509.447NANANANANANANANANANANANANANANANANANANANANANANANA-531.487-258.232-925.277-2323.26107.453240.312-479.796-150.929-457.731-133.534342.375
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▂▂▄▃▄▅█▆▅▃▂▄▃▂▂▂▁▃▂▂▂▄▃▅▆▆▅▄▂▂▁▂▂▁▁▂▂▁▂▂▁▂▁▁▁15.23912.81413.55629.8320.28731.74938.3969.70454.58344.03922.48911.01529.00716.75910.2939.3158.176.31121.0019.18816.0937.36628.0822.24445.00251.80351.41335.93931.40313.21514.8166.26311.6866.8345.1673.6927.7568.2763.45310.9948.6863.5867.463.0191.9074.44
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▅▄▅▃█▂▃▃▂▁▃2088.4691695.682127.446797.4044915.147-232.5211009.959921.462-311.367-1034.992943.517NANANANANANANANANANANANANANANANANANANANANANANANA886.644359.20444.509728.462865.678387.144286.253-22.805536.883150.009410.697
us-gaap:PaymentsOfDividendsCommonStock ███████▇█▇▇▇▇▅▅▅▅▄▄▄▄▃▃▃▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▁▁▁46.27246.12445.82244.95744.87144.93444.87444.70444.82642.60242.72843.09343.07736.55136.41836.36136.73734.65634.33934.03933.58632.93833.14433.14633.58332.28832.28432.23432.17330.48730.35830.31330.16928.77929.57129.52529.51828.23928.2228.19928.21227.57927.45927.35827.28825.922
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▁▁▁▁▂▁▂▄▁█▁▁▁▁█▁▁▁▁▁▁▃▅0.01.2881.7850.0270.013.9731.08417.1950.00.519100.940.00.070.01.431100.00.00.0421.290.00.00.026.2964.353NANA1.4570.00.00.00.6328.80.0115.20.436NANANA0.3720.01.4560.2010.7930.00.00.193
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0640000.0637000.0637000.0637000.0637000.0637000.0637000.0637000.0637000.0637000.0637000.0637000.0617000.0617000.0617000.0616000.0616000.0615000.0615000.0614000.0614000.0613000.0613000.0613000.0613000.0611000.0608000.0606000.0605000.0602000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.811.781.391.51.470.751.611.741.731.81.841.81.71.631.541.431.31.291.291.241.121.070.91.181.121.111.121.21.030.971.00.960.950.910.980.950.940.990.910.890.910.850.870.90.870.79
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.81.771.391.51.470.751.61.731.721.791.821.781.681.611.531.411.291.281.281.241.111.070.891.171.111.11.111.191.020.960.990.960.940.910.980.950.940.990.90.890.910.850.870.90.870.79
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Capital To Risk Weighted Assets

us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity

us-gaap:CapitalToRiskWeightedAssets

cfr:CullenFrost


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value16.1716.0715.4414.690.14430.13970.14570.14630.1460.14680.15090.15440.15290.15360.15150.15190.15650.15620.14930.14860.14360.14390.13850.13960.14060.13930.14550.14810.14760.15380.15790.15680.15390.15440.15110.15620.15610.1610.16240.16570.16420.1591
Percentage of CapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FrostBank


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value14.314.2513.7613.760.13630.13190.1340.13530.13420.13340.13810.13770.13670.13770.13720.13840.13740.13770.13740.13850.13620.13670.13020.13030.12760.12570.12990.13210.13140.13040.13120.13580.13540.13660.13430.13930.13980.14480.14540.14890.14810.1443
Percentage of CapitalToRiskWeightedAssets88.488.789.193.794.594.492.092.591.990.991.589.289.489.690.691.187.888.292.093.294.895.094.093.390.890.289.389.289.084.883.186.688.088.588.989.289.689.989.589.990.290.7

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value3245000.02526000.0-7457000.02443000.03272000.02512000.000780000.001000.00720000.0000519000.0000520000.0000480000.001000.00440000.0000330000.0000330000.000300000.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.00.00.0100.00.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.0100.0
Percentage of InterestAndDividendIncomeOperating1.21.0-3.01.01.30.90.00.00.30.00.00.00.30.00.00.00.20.00.00.00.30.00.00.00.30.00.00.00.30.00.00.00.20.00.00.00.20.00.00.2

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

cfr:Directordeferredstockunitsoutstanding


Allocated
Period End2021-06-302020-09-302020-06-302019-09-302019-06-30
Value700000.00770000.00780000.0
Percentage of AllocatedShareBasedCompensationExpense21.60.023.50.0100.0
Percentage of InterestAndDividendIncomeOperating0.30.00.30.00.3
Percentage of InterestAndDividendIncomeOperating cfr:Directordeferredstockunitsoutstanding0.00.00.00.00.0

cfr:NonVestedStockAwardsOutstanding


Allocated
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1768000.01883000.01999000.02062000.02264000.01536000.02056000.02135000.0
Percentage of AllocatedShareBasedCompensationExpense54.574.581.863.090.10.0263.60.0
Percentage of InterestAndDividendIncomeOperating0.70.80.80.80.90.50.70.8
Percentage of InterestAndDividendIncomeOperating cfr:NonVestedStockAwardsOutstanding0.00.00.00.00.00.00.00.0

us-gaap:PerformanceShares


Allocated
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value777000.0643000.0444000.0440000.0248000.0809000.01149000.01137000.0
Percentage of AllocatedShareBasedCompensationExpense23.925.518.213.49.90.0147.30.0
Percentage of InterestAndDividendIncomeOperating0.30.30.20.20.10.30.40.4
Percentage of InterestAndDividendIncomeOperating us-gaap:PerformanceShares0.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value143-9.207961112171516519723727319639101-35.92112299142103-156.4171417313438127-4.745905972846357500.8953123806657599510352-43.9399010457
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating54.5-3.738.644.685.356.823.669.182.397.470.014.939.3-14.852.243.765.149.0-76.47.389.769.720.267.1-2.649.132.439.848.638.835.031.40.619.814.650.743.036.837.362.066.334.2-28.558.167.437.9

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value13312396104915811712512613013213312511710910399969291797861878584889479737772726880757478
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating50.650.238.941.636.021.842.143.843.946.447.249.548.548.346.845.345.345.545.046.141.340.632.746.346.145.748.352.046.244.847.245.045.543.349.847.947.650.1

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:StatementBusinessSegments

cfr:Bank


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value1241169155
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest93.394.299.895.1
Percentage of InterestAndDividendIncomeOperating47.347.435.920.8
Percentage of InterestAndDividendIncomeOperating cfr:Bank0.00.00.00.0

cfr:FrostWealthAdvisors


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value13104.9687.072
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest9.88.25.412.2
Percentage of InterestAndDividendIncomeOperating5.04.11.92.7
Percentage of InterestAndDividendIncomeOperating cfr:FrostWealthAdvisors0.00.00.00.0

cfr:NonBanks


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value-4.164-3.017-4.799-4.255
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-3.1-2.4-5.2-7.3
Percentage of InterestAndDividendIncomeOperating-1.6-1.2-1.9-1.6
Percentage of InterestAndDividendIncomeOperating cfr:NonBanks0.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value157.8978.6459.516-1.3143.32313131413131513119.0839.89213118.528108.4069.4293.6571212121517131214111213191716171823131213151512
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating5.73.23.53.8-0.51.24.94.75.25.04.85.65.44.63.94.36.35.44.25.54.34.91.96.46.86.68.59.47.87.49.07.48.08.612.410.810.311.211.815.38.78.28.99.810.18.5

us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementBusinessSegments

cfr:Bank


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value137.177-0.9033.235
Percentage of IncomeTaxExpenseBenefit90.290.968.797.4
Percentage of InterestAndDividendIncomeOperating5.22.9-0.41.2
Percentage of InterestAndDividendIncomeOperating cfr:Bank0.00.00.00.0

cfr:FrostWealthAdvisors


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.7362.1331.0431.485
Percentage of IncomeTaxExpenseBenefit18.127.0-79.444.7
Percentage of InterestAndDividendIncomeOperating1.00.90.40.6
Percentage of InterestAndDividendIncomeOperating cfr:FrostWealthAdvisors0.00.00.00.0

cfr:NonBanks


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1.26-1.413-1.454-1.397
Percentage of IncomeTaxExpenseBenefit-8.4-17.9110.7-42.0
Percentage of InterestAndDividendIncomeOperating-0.5-0.6-0.6-0.5
Percentage of InterestAndDividendIncomeOperating cfr:NonBanks0.00.00.00.0

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-302010-12-312010-09-30
Value0.011320.03.010310.00.01.2243.8880.01419220.01113250.02113220.01717270.06.5710320.0202418231519
Percentage of IncomeTaxesPaid0.0100.0100.00.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.04.812.60.01.13.711.10.00.00.51.50.06.18.410.40.05.56.713.40.011.56.812.00.09.79.915.70.04.06.420.50.012.615.711.915.010.012.4

Insurance Commissions And Fees

us-gaap:InsuranceCommissionsAndFees

us-gaap:InsuranceCommissionsAndFees


Insurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value101711111016121110181111101511109.7281311119.36151211101410119.8231310109.266138.4369.9649.171127.459.5697.908106.7778.5887.51211
Percentage of InsuranceCommissionsAndFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating4.17.04.74.64.26.24.44.13.56.54.14.14.16.65.04.84.46.55.55.64.88.06.66.25.47.95.96.25.78.06.46.45.88.25.26.35.97.94.76.25.16.84.45.54.87.3

Interest And Fee Income Loans And Leases

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestAndFeeIncomeLoansAndLeases


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value182167167169171172179186189185181172164151142138131122117114113112109111108105109116110104105104103102104101989799999998101102102102
Percentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating69.567.967.367.367.264.764.665.365.965.964.564.163.662.160.960.859.857.957.557.958.658.557.658.458.157.360.164.063.763.764.464.965.064.364.764.363.162.163.064.463.964.166.066.166.067.4

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5.8785.736.6497.7439.183212633343431272013108.3754.4863.2833.2652.9822.9492.882.9633.1073.1233.6713.8333.9073.4263.3714.6615.4985.8375.9496.3876.6276.5797.1588.1899.418111112131314
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating2.22.32.73.13.68.19.711.612.012.411.410.18.05.64.43.72.01.61.61.51.51.51.61.61.72.02.12.12.02.12.83.43.73.74.04.24.24.65.26.17.67.78.28.58.69.6

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value257240242243245244251253253246249241237229223219214208201194190189186186182180178177169160159155153152154151149149150145144141141142141137
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating97.897.797.396.996.491.990.388.488.087.688.689.992.094.495.696.398.098.498.498.598.598.598.498.498.398.097.997.998.097.997.296.696.396.396.095.895.895.494.893.992.492.391.891.591.490.4

us-gaap:InterestIncomeExpenseNet us-gaap:StatementBusinessSegments

cfr:Bank


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value258242247246
Percentage of InterestIncomeExpenseNet100.5100.5100.6100.6
Percentage of InterestAndDividendIncomeOperating98.398.297.092.5
Percentage of InterestAndDividendIncomeOperating cfr:Bank0.00.00.00.0

cfr:FrostWealthAdvisors


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.5080.4860.6840.877
Percentage of InterestIncomeExpenseNet0.20.20.30.4
Percentage of InterestAndDividendIncomeOperating0.20.20.30.3
Percentage of InterestAndDividendIncomeOperating cfr:FrostWealthAdvisors0.00.00.00.0

cfr:NonBanks


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1.802-1.81-2.152-2.369
Percentage of InterestIncomeExpenseNet-0.7-0.8-0.9-1.0
Percentage of InterestAndDividendIncomeOperating-0.7-0.7-0.8-0.9
Percentage of InterestAndDividendIncomeOperating cfr:NonBanks0.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1181168895935410311111111611911711110610093858483807168587573727277666162605955605858615554555153545247
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating44.947.035.537.836.520.637.339.138.741.442.443.943.243.842.940.939.040.140.940.636.935.730.839.939.339.139.842.738.437.438.237.637.534.837.437.137.338.935.035.235.733.834.435.334.131.4

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementOperatingActivitiesSegment

us-gaap:OperatingSegments, cfr:FrostWealthAdvisors


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value4.133.9255.5874.1064.8976.46.4425.9015.6346.4176.2795.2944.7974.864.1524.7825.2995.3375.8735.3885.0843.84.2633.2383.298
Percentage of NetIncomeLoss4.34.210.23.74.45.55.55.35.36.97.36.26.06.86.06.37.37.47.68.18.36.37.15.95.6
Percentage of InterestAndDividendIncomeOperating1.61.52.11.41.72.32.42.32.32.82.92.52.42.52.22.52.82.93.23.13.12.42.72.02.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cfr:FrostWealthAdvisors0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cfr:NonBanks


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value-2.581-3.345-2.858-2.853-4.204-2.821-2.812-3.836-2.795-1.654-2.255-1.222-0.925-1.576-1.303-0.334-1.243-0.8920.179-2.790.048-1.259-1.182-1.603-1.507
Percentage of NetIncomeLoss-2.7-3.6-5.2-2.6-3.8-2.4-2.4-3.4-2.6-1.8-2.6-1.4-1.2-2.2-1.9-0.4-1.7-1.20.2-4.20.1-2.1-2.0-2.9-2.6
Percentage of InterestAndDividendIncomeOperating-1.0-1.3-1.1-1.0-1.5-1.0-1.0-1.5-1.1-0.7-1.0-0.6-0.5-0.8-0.7-0.2-0.7-0.50.1-1.60.0-0.8-0.7-1.0-1.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cfr:NonBanks0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:Banking


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value939252110110112114109103
Percentage of NetIncomeLoss98.499.495.098.999.496.996.998.197.3
Percentage of InterestAndDividendIncomeOperating37.236.319.638.638.540.142.542.442.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:Banking0.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

cfr:Bank


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1101099252
Percentage of NetIncomeLoss93.794.599.495.0
Percentage of InterestAndDividendIncomeOperating42.144.436.319.6
Percentage of InterestAndDividendIncomeOperating cfr:Bank0.00.00.00.0

cfr:FrostWealthAdvisors


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value108.0253.9255.587
Percentage of NetIncomeLoss8.76.94.210.2
Percentage of InterestAndDividendIncomeOperating3.93.31.52.1
Percentage of InterestAndDividendIncomeOperating cfr:FrostWealthAdvisors0.00.00.00.0

cfr:NonBanks


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value-2.904-1.604-3.345-2.858
Percentage of NetIncomeLoss-2.5-1.4-3.6-5.2
Percentage of InterestAndDividendIncomeOperating-1.1-0.7-1.3-1.1
Percentage of InterestAndDividendIncomeOperating cfr:NonBanks0.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1181168895935410311111111611911711110610093
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating44.947.035.537.836.520.637.339.138.741.442.443.943.243.842.940.9
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1161138895934710110910911411711510910498918382817869665673717070756459605856555958576055545551525452
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating44.346.235.537.836.517.836.638.438.040.741.743.142.442.942.040.038.139.239.939.635.934.729.738.838.238.038.741.637.236.137.036.335.834.737.337.037.138.834.935.135.533.734.335.233.9

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementBusinessSegments

cfr:Bank


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1101099252
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic95.196.299.4110.2
Percentage of InterestAndDividendIncomeOperating42.144.436.319.6
Percentage of InterestAndDividendIncomeOperating cfr:Bank0.00.00.00.0

cfr:FrostWealthAdvisors


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value108.0253.9255.587
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic8.87.04.211.8
Percentage of InterestAndDividendIncomeOperating3.93.31.52.1
Percentage of InterestAndDividendIncomeOperating cfr:FrostWealthAdvisors0.00.00.00.0

cfr:NonBanks


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value-4.573-3.755-3.345-10.388
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic-3.9-3.3-3.6-22.0
Percentage of InterestAndDividendIncomeOperating-1.7-1.5-1.3-3.9
Percentage of InterestAndDividendIncomeOperating cfr:NonBanks0.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value25-125.2227.8251612496-38.0138512515777-77.916-9.965-142.401216.3655718-240.136-65.84410265-20.05351-77.82218-13.462-5.192172.314-5.293-9.875-58.768-23.678-36.675218.879-3.3383.68141
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating9.6-50.83.16.748.836.3-13.730.043.655.927.6-29.0-3.9-58.59.32.826.18.9-117.2-33.352.734.0-10.627.2-41.99.9-7.4-2.910.21.4-3.2-6.1-37.0-14.9-22.813.65.7-2.12.326.8

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:OtherComprehensiveIncomeLocation

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1.2081.208-8.0491.051.0511.051-1.7691.1111.111.111-4.720.9880.9880.9870.4110.8820.8830.8823.3621.030.5711.009-1.3831.1361.1371.137-23.9540.4370.4360.437191.0661.0651.066-8.7680.9280.9280.799
Percentage of OtherComprehensiveIncomeLossNetOfTax4.8-1.0-102.96.20.81.14.71.30.90.7-6.1-1.3-9.9-0.71.913.91.54.7-1.4-1.60.61.56.92.2-1.56.2177.9-8.42.518.9-373.0-10.8-1.8-4.523.94.310.5-23.9
Percentage of InterestAndDividendIncomeOperating0.50.5-3.20.40.40.4-0.60.40.40.4-1.70.40.40.40.20.40.40.41.60.50.30.5-0.70.60.60.6-13.10.20.30.312.00.70.70.7-5.50.60.60.5
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value25-125.2227.8251612496-38.0138512515777-77.916-9.965-142.401
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating9.6-50.83.16.748.836.3-13.730.043.655.927.6-29.0-3.9-58.5
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AvailableforsaleSecurities


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value24-126.43151512395-36.2448412415682-78.904-10.953-143.388215.4835617-243.498-66.87410164-18.6750-78.95917120.446237.951-19.453-5.585-54.454-19.375-22.52326131.543
Percentage of OtherComprehensiveIncomeLossNetOfTax95.2101.0202.993.899.298.995.398.799.199.3106.1101.3109.9100.798.186.198.595.3101.4101.699.498.593.197.8101.593.8-90.3-8.6131.8343.6367.556.692.781.861.4121.6150.8-46.2
Percentage of InterestAndDividendIncomeOperating9.1-51.36.46.348.435.9-13.029.643.255.529.3-29.4-4.2-58.99.12.425.78.4-118.9-33.952.533.5-9.926.6-42.59.36.70.213.54.9-11.9-3.5-34.2-12.2-14.016.58.61.0
Percentage of InterestAndDividendIncomeOperating us-gaap:AvailableforsaleSecurities0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value25-125.2227.8251612496-38.0138512515777-77.916-9.965-142.401216.365
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating9.6-50.83.16.748.836.3-13.730.043.655.927.6-29.0-3.9-58.59.32.8
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1919201917222322336343-887.665329322321313300295292295276268285269270261263261258248237237229225230230222218
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating7.58.18.47.96.98.58.48.0116.6122.0-315.7122.6125.0132.0134.0132.2134.9138.0144.0140.1138.8148.4142.4142.2140.8143.1143.1142.3143.8145.3145.1142.6141.9145.2143.2140.8140.6

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value348334333327323457346342336343336329322321313300295292295276268285269270261263261258248237237229225230230222218
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating132.5135.5134.0130.2126.8172.0124.6119.5116.6122.0119.6122.6125.0132.0134.0132.2134.9138.0144.0140.1138.8148.4142.4142.2140.8143.1143.1142.3143.8145.3145.1142.6141.9145.2143.2140.8140.6

us-gaap:Revenues us-gaap:ConsolidationItems, us-gaap:StatementOperatingActivitiesSegment

us-gaap:OperatingSegments, cfr:FrostWealthAdvisors


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value3535403736373634353636343332313132323232312828272626
Percentage of Revenues10.811.08.911.010.810.911.210.710.912.112.411.812.112.011.111.712.412.412.613.013.112.612.511.811.712.1
Percentage of InterestAndDividendIncomeOperating14.014.015.313.112.613.313.713.414.416.116.716.317.016.716.516.717.517.718.018.719.017.917.817.116.417.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cfr:FrostWealthAdvisors0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cfr:NonBanks


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value-2.113-2.377-2.6-2.63-2.842-2.71-2.608-2.623-2.449-2.285-2.094-1.29-1.258-1.15-1.129-0.513-0.773-0.5930.0120.2080.517-0.82-0.775-0.89-1.554-1.252
Percentage of Revenues-0.6-0.7-0.6-0.8-0.8-0.8-0.8-0.8-0.8-0.8-0.7-0.4-0.5-0.4-0.4-0.2-0.3-0.20.00.10.2-0.4-0.3-0.4-0.7-0.6
Percentage of InterestAndDividendIncomeOperating-0.8-0.9-1.0-0.9-1.0-1.0-1.0-1.0-1.0-1.0-1.0-0.6-0.6-0.6-0.6-0.3-0.4-0.30.00.10.3-0.5-0.5-0.6-1.0-0.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cfr:NonBanks0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:Banking


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value293290419307302308295290288
Percentage of Revenues89.989.791.789.890.189.989.690.189.8
Percentage of InterestAndDividendIncomeOperating117.0113.8157.7107.3105.1109.7109.8112.6118.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:Banking0.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:StatementBusinessSegments

cfr:Bank


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value307295290419
Percentage of Revenues88.288.689.791.7
Percentage of InterestAndDividendIncomeOperating116.9120.0113.8157.7
Percentage of InterestAndDividendIncomeOperating cfr:Bank0.00.00.00.0

cfr:FrostWealthAdvisors


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value43403540
Percentage of Revenues12.412.011.08.9
Percentage of InterestAndDividendIncomeOperating16.416.314.015.3
Percentage of InterestAndDividendIncomeOperating cfr:FrostWealthAdvisors0.00.00.00.0

cfr:NonBanks


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value-2.033-1.963-2.377-2.6
Percentage of Revenues-0.6-0.6-0.7-0.6
Percentage of InterestAndDividendIncomeOperating-0.8-0.8-0.9-1.0
Percentage of InterestAndDividendIncomeOperating cfr:NonBanks0.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value4669744046423914010139377341473402733098318183166432292312233068731459317473098930206305243019629602289762840028567283412778128158282772737026523246852431223529225712249723124218472086620417203171948918478179411761717738170591676016288
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value4539416636073543
Percentage of Assets10.712.211.211.2
Percentage of Assets10.712.211.211.2
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value4232339778380983601635368303203011529216280772807028924279152737728215284502780026982274272719326441258392540725676254362490925248254262455223752221192179821048201432005420706194281850318096180331724216301158441555515621150191481114393
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets90.690.389.989.889.888.888.588.388.288.789.689.489.289.789.689.789.389.990.189.389.289.589.989.889.789.789.989.789.689.689.789.589.289.189.588.988.788.688.888.588.288.388.388.188.088.488.4

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value246254239245
Percentage of Liabilities0.60.80.80.9
Percentage of Assets0.60.70.70.8
Percentage of Assets srt:ParentCompany5.46.16.66.9

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value4669744046423914010139377341473402733098318183166432292312233068731459317473098930206305243019629602289762840028567283412778128158282772737026523246852431223529225712249723124218472086620417203171948918478179411761717738170591676016288
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value4539416636073543
Percentage of LiabilitiesAndStockholdersEquity10.712.211.211.2
Percentage of Assets10.712.211.211.2
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value4373426742934085400838263911388137413593336833083309324332973189322330973002316131362992289029042871291028512817277025652514248124272443241724182362232022832246217620972061211620401949189417631477
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.49.710.110.210.211.211.511.711.811.310.410.610.810.310.410.310.710.19.910.710.810.510.110.210.310.310.110.310.410.410.310.510.810.910.511.111.311.411.211.511.811.711.711.912.011.611.60.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value4293391133683297
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets10.111.510.410.4
Percentage of Assets srt:ParentCompany94.693.993.493.1

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value41238751250548836326730521993-63.6-141.235-63.319-53.354795751-24.623113141140238247154154137
Percentage of StockholdersEquity9.49.111.912.412.29.56.87.95.92.6-1.9-4.3-1.9-1.62.41.81.6-0.83.95.05.69.810.87.58.17.8
Percentage of Assets0.90.91.21.31.21.10.80.90.70.3-0.2-0.5-0.2-0.20.30.20.2-0.10.40.50.61.01.20.90.90.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value1002999997991989985983977975970967962960956953951948906897886724702680657600589
Percentage of StockholdersEquity22.923.423.224.324.725.825.125.226.127.028.729.129.029.528.929.829.430.231.031.128.829.129.831.931.733.4
Percentage of Assets2.12.32.42.52.52.92.93.03.13.13.03.13.13.03.03.13.13.03.13.13.03.03.43.73.70.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value0.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6370.6370.6370.6170.6150.6130.6110.6020.602
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-31
Value1451451450.00.01441441441441441441441441441441441441441441440.0
Percentage of StockholdersEquity3.33.43.40.00.03.73.73.94.04.34.44.44.54.44.54.54.85.05.15.70.0
Percentage of Assets0.30.30.30.00.00.40.40.50.50.40.50.50.50.50.50.50.50.50.50.60.0
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value28622797275027242678263526672617255824952440236922972234218721332078198518451710157514751354124911501080
Percentage of StockholdersEquity65.565.564.166.766.868.968.267.468.469.472.471.669.468.966.366.964.566.163.860.062.761.059.360.660.761.2
Percentage of Assets6.16.46.56.86.87.77.87.98.07.97.67.67.57.16.96.96.96.66.56.06.56.46.77.17.10.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-51.172-62.682-113.939-136.919-147.825-159.141-151.614-164.551-156.877-111.55-119.917-27.823-29.517-39.181-67.207-98.9120.0-10.273-111.181-32.334-70.8550.0-0.3720.0-10.841-43.594
Percentage of StockholdersEquity-1.2-1.5-2.7-3.4-3.7-4.2-3.9-4.2-4.2-3.1-3.6-0.8-0.9-1.2-2.0-3.10.0-0.3-3.8-1.1-2.80.0-0.00.0-0.6-2.5
Percentage of Assets-0.1-0.1-0.3-0.3-0.4-0.5-0.4-0.5-0.5-0.4-0.4-0.1-0.1-0.1-0.2-0.30.0-0.0-0.4-0.1-0.30.0-0.00.0-0.10.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Tier One Risk Based Capital

us-gaap:TierOneRiskBasedCapital dei:LegalEntity

us-gaap:TierOneRiskBasedCapital

cfr:CullenFrost


Tier
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value338533043203300329402884300129322877285527862803272526482570248925302459238323022210216621632157217421352186213420832008195819211857181317631727169116571625159115611494
Percentage of TierOneRiskBasedCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.27.57.67.57.58.48.88.99.09.08.69.08.98.48.18.08.48.17.97.87.67.67.67.67.87.67.77.87.98.18.18.28.28.17.67.98.18.18.08.28.58.5
Percentage of Assets cfr:CullenFrost0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cfr:FrostBank


Tier
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value316631043030301029772924295829102841278427432683262125602518246124012347229622522207216821312111206420181979193218821738170717011674164616251599157415501531150714851432
Percentage of TierOneRiskBasedCapital93.594.094.6100.2101.3101.498.699.298.797.598.595.796.296.798.098.894.995.496.397.999.9100.198.597.994.994.590.590.590.386.587.288.690.190.892.292.693.193.594.294.795.195.9
Percentage of Assets6.87.07.17.57.68.68.78.88.98.88.58.68.58.17.97.98.07.77.67.67.67.67.57.47.47.27.07.17.17.07.07.27.47.37.07.37.57.67.57.78.08.1
Percentage of Assets cfr:FrostBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

us-gaap:CashAndCashEquivalentsAtCarryingValue

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value381267236265289206
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.80.70.81.00.7
Percentage of Assets srt:ParentCompany8.46.46.67.50.00.0

Land

us-gaap:Land

us-gaap:Land


Land
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1281121041071061111029710510393
Percentage of Land100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.40.40.40.40.50.50.5

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value13471279802751722760625611608609595
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.23.82.52.42.42.72.22.52.63.03.4

Furniture And Fixtures Gross

us-gaap:FurnitureAndFixturesGross

us-gaap:FurnitureAndFixturesGross


Furniture
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value243226196179167136103212201196196
Percentage of FurnitureAndFixturesGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.70.60.60.60.50.40.90.91.01.1

Leasehold Improvements Gross

us-gaap:LeaseholdImprovementsGross

us-gaap:LeaseholdImprovementsGross


Leasehold
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value183156837467646061595654
Percentage of LeaseholdImprovementsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.50.30.20.20.20.20.30.30.30.3

Construction In Progress Gross

us-gaap:ConstructionInProgressGross

us-gaap:ConstructionInProgressGross


Construction
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value414445111981118103.5034.2697.605
Percentage of ConstructionInProgressGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.00.10.30.40.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value302267250230197201182298292290278
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.80.80.70.70.70.61.21.31.41.6

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value185000.0202000.0208000.0212000.0241000.0257000.0264000.0274000.0305000.0325000.0331000.0336000.0369000.0388000.0402000.0405000.0438000.0458000.0560000.0586000.0619000.0664000.0766000.0816000.0849000.0894000.0996000.01029000.0806000.0689000.0753000.0780000.0788000.0820000.0918000.0973000.0994000.01011000.01052000.01108000.01107000.01120000.01217000.01276000.01299000.01333000.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value1031104010451055104410351011987915750552541539521520520520521525564564556559540525487442397369320313306306303315317319321319321316313316315318322324
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.42.52.62.73.03.03.02.92.41.71.71.81.71.61.71.71.71.71.91.92.02.01.91.91.71.61.51.41.31.31.31.41.31.41.51.51.61.61.61.71.71.81.81.91.92.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value654654654654654654654654654654654654654654654654654654654654654654654654654654653653649536536535535535535535535535528528528527527527527527527
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.51.51.61.71.91.92.02.12.12.02.12.12.12.12.12.22.12.22.22.32.32.32.32.42.32.32.42.42.22.22.32.42.42.32.52.62.62.62.72.92.93.03.03.13.13.2

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value1.7711.9832.2242.4812.7453.0193.3243.6493.984.3164.6855.0735.4755.886.3186.7766.9317.5178.1368.89.56610111213155.6566.3455.7596.5397.3278.1479.0661011101112131415161819
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.1

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312019-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value1.1761.3611.5632.48110111213155.6566.3455.7596.5397.3278.14710
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.10.00.00.00.00.00.00.1

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CoreDeposits


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value0.9721.1271.2961.4651.6341.8322.0438.318.9729.67510122.5643.0053.5374.1154.6935.2968.234
Percentage of FiniteLivedIntangibleAssetsNet82.782.882.90.00.00.082.380.079.979.879.881.745.347.461.462.964.165.077.6
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CoreDeposits0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value0.2040.2340.2670.3060.3490.3920.4381.8331.9782.1282.2912.4632.6432.8281.7961.9442.0992.2622.113
Percentage of FiniteLivedIntangibleAssetsNet17.317.217.10.00.00.017.717.717.617.617.515.746.744.631.229.728.627.819.9
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2812872922983043022972992841650.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.60.70.70.70.80.90.90.90.90.50.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value616504584482565518440391450403457431453398400338369332396319362308341288398373341315313266284266326277292293327314363312326333360444457406420
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.11.41.21.41.51.31.21.41.31.41.41.51.31.31.11.21.11.31.11.31.11.21.01.41.31.21.21.21.11.21.11.41.21.31.31.61.51.81.61.81.92.02.52.72.42.6

Time Deposit Maturities Year One

us-gaap:TimeDepositMaturitiesYearOne

us-gaap:TimeDepositMaturitiesYearOne


Time
Period End2020-12-31
Value979
Percentage of TimeDepositMaturitiesYearOne100.0
Percentage of Assets2.3

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value313318323328334331323325291171174
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.80.80.91.01.01.00.90.50.0

us-gaap:OperatingLeaseLiability us-gaap:BalanceSheetLocation

us-gaap:OtherLiabilities


Operating
Period End2020-12-312019-12-312019-01-01
Value323323174
Percentage of OperatingLeaseLiability100.0100.0100.0
Percentage of Assets0.81.00.0
Percentage of Assets us-gaap:OtherLiabilities0.00.00.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value413
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets1.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value90
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.2

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value4373426742934085400838263911388137413593336833083309324332973189322330973002316131362992289029042871291028512817277025652514248124272443241724182362232022832246217620972061211620401949189417631477
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.49.710.110.210.211.211.511.711.811.310.410.610.810.310.410.310.710.19.910.710.810.510.110.210.310.310.110.310.410.410.310.510.810.910.511.111.311.411.211.511.811.711.711.912.011.611.60.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value4293391133683297
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets10.111.510.410.4
Percentage of Assets srt:ParentCompany94.693.993.493.1

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value41238751250548836326730521993-63.6-141.235-63.319-53.354795751-24.623113141140238247154154137
Percentage of StockholdersEquity9.49.111.912.412.29.56.87.95.92.6-1.9-4.3-1.9-1.62.41.81.6-0.83.95.05.69.810.87.58.17.8
Percentage of Assets0.90.91.21.31.21.10.80.90.70.3-0.2-0.5-0.2-0.20.30.20.2-0.10.40.50.61.01.20.90.90.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value1002999997991989985983977975970967962960956953951948906897886724702680657600589
Percentage of StockholdersEquity22.923.423.224.324.725.825.125.226.127.028.729.129.029.528.929.829.430.231.031.128.829.129.831.931.733.4
Percentage of Assets2.12.32.42.52.52.92.93.03.13.13.03.13.13.03.03.13.13.03.13.13.03.03.43.73.70.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value0.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6420.6370.6370.6370.6170.6150.6130.6110.6020.602
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-31
Value1451451450.00.01441441441441441441441441441441441441441441440.0
Percentage of StockholdersEquity3.33.43.40.00.03.73.73.94.04.34.44.44.54.44.54.54.85.05.15.70.0
Percentage of Assets0.30.30.30.00.00.40.40.50.50.40.50.50.50.50.50.50.50.50.50.60.0
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value28622797275027242678263526672617255824952440236922972234218721332078198518451710157514751354124911501080
Percentage of StockholdersEquity65.565.564.166.766.868.968.267.468.469.472.471.669.468.966.366.964.566.163.860.062.761.059.360.660.761.2
Percentage of Assets6.16.46.56.86.87.77.87.98.07.97.67.67.57.16.96.96.96.66.56.06.56.46.77.17.10.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-51.172-62.682-113.939-136.919-147.825-159.141-151.614-164.551-156.877-111.55-119.917-27.823-29.517-39.181-67.207-98.9120.0-10.273-111.181-32.334-70.8550.0-0.3720.0-10.841-43.594
Percentage of StockholdersEquity-1.2-1.5-2.7-3.4-3.7-4.2-3.9-4.2-4.2-3.1-3.6-0.8-0.9-1.2-2.0-3.10.0-0.3-3.8-1.1-2.80.0-0.00.0-0.6-2.5
Percentage of Assets-0.1-0.1-0.3-0.3-0.4-0.5-0.4-0.5-0.5-0.4-0.4-0.1-0.1-0.1-0.2-0.30.0-0.0-0.4-0.1-0.30.0-0.00.0-0.10.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0642000.0640000.0637000.0637000.0637000.0637000.0637000.0637000.0637000.0637000.0637000.0637000.0637000.0617000.0617000.0617000.0616000.0616000.0615000.0615000.0614000.0614000.0613000.0613000.0613000.0613000.0611000.0608000.0606000.0605000.0602000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value1002999997991989985983977975970967962960956953951948926906905902899897895892889886883879727724719686684702698692688680676673668657640628613600
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.32.42.52.52.92.93.03.13.13.03.13.13.03.03.13.13.03.03.13.13.23.13.23.23.23.13.23.32.93.03.13.03.03.03.23.33.43.43.53.63.73.73.63.73.73.7

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value28622797275027242678263526672617255824952440236922972234218721332078203219851942191418781845182317831747171016721630159915751546152415001475144514161387135413271301127312491223119611701150
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.16.46.56.86.87.77.87.98.07.97.67.67.57.16.96.96.96.76.66.66.66.66.56.46.46.26.06.16.16.56.56.66.86.76.46.66.86.86.76.87.07.17.16.97.07.07.1

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value41238751250548836326730521993-63.6-141.235-63.319-53.354795751-5.85-24.62321528117911313382160141155160142140145155214238274253244247244202154154251215164154
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.91.21.31.21.10.80.90.70.3-0.2-0.5-0.2-0.20.30.20.2-0.0-0.10.71.00.60.40.50.30.60.50.60.60.60.60.60.71.01.01.31.21.21.21.31.10.90.91.41.31.00.9

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:OtherComprehensiveIncomeLocation

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-31
Value-48.415-49.623-50.831-42.782-43.832-44.883-45.934-44.165-45.276-46.386-47.497-42.777-43.765-44.753-37.718-38.129-39.011-39.894-40.776-44.138-45.168-45.739-46.748-45.365-46.501-47.638-48.775-24.821-25.258-25.694-26.131-45.874-46.94-48.005-49.071-40.303-41.231-42.159-42.958-28.357-27.78
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-11.7-12.8-9.9-8.5-9.0-12.3-17.2-14.5-20.6-49.574.730.369.183.9-47.4-66.1-76.0681.9165.6-20.5-16.1-25.5-41.1-33.9-56.5-29.8-34.4-16.0-15.7-18.0-18.6-31.5-30.2-22.4-20.6-14.7-16.3-17.3-17.3-18.4-18.0
Percentage of Assets-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value41238751250548836326730521993-63.6-141.235-63.319-53.35479-24.623113
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.91.21.31.21.10.80.90.70.3-0.2-0.5-0.2-0.20.3-0.10.4
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AvailableforsaleSecurities


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-31
Value461437563547532408313349264140-16.103-98.458-19.554-8.6011179590341625932622516017912820719017817715414616617122624526824122822796110
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax111.7112.8109.9108.5109.0112.3117.2114.5120.6149.525.369.730.916.1147.4166.1176.0-581.9-65.6120.5116.1125.5141.1133.9156.5129.8134.4114.9110.9108.3104.4114.0110.4105.5103.197.695.593.591.762.271.4
Percentage of Assets1.01.01.31.41.41.20.91.10.80.4-0.0-0.3-0.1-0.00.40.30.30.10.10.91.10.80.60.60.50.70.70.70.70.60.60.70.81.01.11.21.21.11.10.50.7
Percentage of Assets us-gaap:AvailableforsaleSecurities0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-312011-09-302011-06-302011-03-312009-12-31
Value516211313614715915116415611111927293967980.00.010461061111119231313238454870750.00.3721.4561.4560.14310
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.30.30.40.50.40.50.50.40.40.10.10.10.20.30.00.00.00.20.40.40.40.30.10.10.10.10.20.20.30.30.00.00.00.00.00.1

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.2452.5265.6912.4433.2722.5125.2532.6754.3643.6544.3872.7963.5853.1754.02.7223.1883.1033.8012.5212.9952.4825.0582.3422.7752.5625.5652.2422.562.1364.6532.3252.6432.3424.8942.5442.8432.5555.9472.4333.8463.7374.4453.4223.413.648
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3.2452.5265.6912.4433.2722.5125.2532.6754.3643.6544.3872.7963.5853.1754.02.722
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value12821949268-41.9682484829314514610210165101159394711411247285
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating49.089.119.7106.8-16.593.617.6102.450.651.936.464.342.165.09.560.560.546.492.080.246.756.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1164-402.029936-489.43-2469.196390-178.573-252.252-170.46-785.465-509.447-531.487-258.232-925.277-2323.26107240-479.796-150.929-457.731-133.534342
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating442.8-163.0376.3-194.9-968.3147.0-64.2-88.1-59.2-279.2-181.2-336.0-165.8-589.9-1465.769.4153.9-312.4-97.9-294.0-86.0225.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2088169521277974915-232.5211009921-311.367-1034.99294388635944728865387286-22.805536150410
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating794.0687.6854.8317.51927.6-87.4363.2321.9-108.1-367.9335.5560.6230.628.4459.6559.3248.0186.4-14.8344.896.6269.9

Cash And Cash Equivalents Period Increase Decrease

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3382151331135762403407880962-336.044-1674.325536104-1365.478-372.099-38.8561385-822.858387146630-498.24271-163.382486-576.218-519.359-936.33279-157.5216222361418-317.105-306.519772456166-778.858-1579.7691066721-122.306-31.90720489838
Percentage of CashAndCashEquivalentsPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1285.8613.71250.8229.4942.8153.2316.6336.2-116.6-595.2190.738.7-529.4-152.9-16.6608.8-375.3183.171.3319.1-257.6141.2-86.4255.9-309.9-281.7-512.1153.9-91.0380.0144.1882.0-199.4-193.1480.6288.9106.9-496.5-996.6689.2462.4-79.6-20.7131.157.4550.9

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.0164.172-7.02943-25.844-26.0899.239-0.950.369-1.04413161210-4.988-5.3320.128-4.3010.031-1.996-5.238-4.395-6.825-4.83-3.656-3.7483.194-2.784-2.607-1.9333.0082.010.379-2.118-1.385-1.043-1.438-2.5398.304-0.3820.384-0.1395.5220.528-1.013-0.393
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value12821949268-41.9682484829314514610210165101159394711411247285
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating49.089.119.7106.8-16.593.617.6102.450.651.936.464.342.165.09.560.560.546.492.080.246.756.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1181168895935410311111111611911711110610093858483807168587573727277666162605955605858615554555153545247
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating44.947.035.537.836.520.637.339.138.741.442.443.943.243.842.940.939.040.140.940.636.935.730.839.939.339.139.842.738.437.438.237.637.534.837.437.137.338.935.035.235.733.834.435.334.131.4

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementOperatingActivitiesSegment

us-gaap:OperatingSegments, cfr:FrostWealthAdvisors


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value4.133.9255.5874.1064.8976.46.4425.9015.6346.4176.2795.2944.7974.864.1524.7825.2995.3375.8735.3885.0843.84.2633.2383.298
Percentage of NetIncomeLoss4.34.210.23.74.45.55.55.35.36.97.36.26.06.86.06.37.37.47.68.18.36.37.15.95.6
Percentage of InterestAndDividendIncomeOperating1.61.52.11.41.72.32.42.32.32.82.92.52.42.52.22.52.82.93.23.13.12.42.72.02.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cfr:FrostWealthAdvisors0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cfr:NonBanks


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value-2.581-3.345-2.858-2.853-4.204-2.821-2.812-3.836-2.795-1.654-2.255-1.222-0.925-1.576-1.303-0.334-1.243-0.8920.179-2.790.048-1.259-1.182-1.603-1.507
Percentage of NetIncomeLoss-2.7-3.6-5.2-2.6-3.8-2.4-2.4-3.4-2.6-1.8-2.6-1.4-1.2-2.2-1.9-0.4-1.7-1.20.2-4.20.1-2.1-2.0-2.9-2.6
Percentage of InterestAndDividendIncomeOperating-1.0-1.3-1.1-1.0-1.5-1.0-1.0-1.5-1.1-0.7-1.0-0.6-0.5-0.8-0.7-0.2-0.7-0.50.1-1.60.0-0.8-0.7-1.0-1.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cfr:NonBanks0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:Banking


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value939252110110112114109103
Percentage of NetIncomeLoss98.499.495.098.999.496.996.998.197.3
Percentage of InterestAndDividendIncomeOperating37.236.319.638.638.540.142.542.442.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:Banking0.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

cfr:Bank


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1101099252
Percentage of NetIncomeLoss93.794.599.495.0
Percentage of InterestAndDividendIncomeOperating42.144.436.319.6
Percentage of InterestAndDividendIncomeOperating cfr:Bank0.00.00.00.0

cfr:FrostWealthAdvisors


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value108.0253.9255.587
Percentage of NetIncomeLoss8.76.94.210.2
Percentage of InterestAndDividendIncomeOperating3.93.31.52.1
Percentage of InterestAndDividendIncomeOperating cfr:FrostWealthAdvisors0.00.00.00.0

cfr:NonBanks


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value-2.904-1.604-3.345-2.858
Percentage of NetIncomeLoss-2.5-1.4-3.6-5.2
Percentage of InterestAndDividendIncomeOperating-1.1-0.7-1.3-1.1
Percentage of InterestAndDividendIncomeOperating cfr:NonBanks0.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1181168895935410311111111611911711110610093
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating44.947.035.537.836.520.637.339.138.741.442.443.943.243.842.940.9
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.2452.5265.6912.4433.2722.5125.2532.6754.3643.6544.3872.7963.5853.1754.02.7223.1883.1033.8012.5212.9952.4825.0582.3422.7752.5625.5652.2422.562.1364.6532.3252.6432.3424.8942.5442.8432.5555.9472.4333.8463.7374.4453.4223.413.648
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1164-402.029936-489.43-2469.196390-178.573-252.252-170.46-785.465-509.447-531.487-258.232-925.277-2323.26107240-479.796-150.929-457.731-133.534342
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating442.8-163.0376.3-194.9-968.3147.0-64.2-88.1-59.2-279.2-181.2-336.0-165.8-589.9-1465.769.4153.9-312.4-97.9-294.0-86.0225.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1512132920313869544422112916109.3158.176.311219.188167.3662822455151353113146.263116.8345.1673.6927.7568.2763.453108.6863.5867.463.0191.9074.44
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2088169521277974915-232.5211009921-311.367-1034.99294388635944728865387286-22.805536150410
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating794.0687.6854.8317.51927.6-87.4363.2321.9-108.1-367.9335.5560.6230.628.4459.6559.3248.0186.4-14.8344.896.6269.9

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value46464544444444444442424343363636363434343332333333323232323030303028292929282828282727272725
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.01.2881.7850.0270.0131.08417500.5191000.00.070.01.4311000.00.0421.290.00.00.026641.4570.00.00.00.63280.01150.4360.3720.01.4560.2010.7930.00.00.193
Percentage of PaymentsForRepurchaseOfCommonStock0.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.00.00.00.0100.0100.0100.00.00.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.00.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value11.36.41.29.1-0.0140.0570.0010.1080.1180.107-0.0010.1140.1110.095-0.010.0960.1390.118-0.0060.1190.1050.121-0.0160.1380.1470.1430.180.1680.1650.1650.1750.1980.2250.2160.2230.3030.1970.1960.2170.228
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:EmployeeStockOption


Share
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value1739600.01887000.01954400.01980900.02104800.02209000.02264400.02352000.02433300.02457800.02569900.02917100.03271300.03311300.03629200.04089000.04662200.05506000.05583600.05612200.04780800.04839200.05010100.05029900.04738700.05513500.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value68.1567.8966.1165.4165.0464.6564.664.2663.9163.7263.5563.5963.5763.6563.3463.3763.3663.4162.6761.760.3160.2660.359.2959.259.058.9954.3551.94
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value9688117122746775651035322153141209215146
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:AccretionOfLoanDiscount

cfr:AccretionOfLoanDiscount


Accretion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value3.1523.4253.7874.2253.624.063.8334.0393.5683.7573.8713.5663.5263.3784.4954.1643.493.9133.6893.7084.4583.7273.9023.5943.383.5714.0063.5283.533.5033.2313.6332.892.92.5672.658
Percentage of AccretionOfLoanDiscount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:ChargeOffOfPreviouslyRestructuresLoans

cfr:ChargeOffOfPreviouslyRestructuresLoans


Charge
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value1433000.01706000.02188000.0-1533000.01533000.01500000.00003000000.03000000.001650000.0-49000.008000000.02000000.000
Percentage of ChargeOffOfPreviouslyRestructuresLoans100.0100.0100.0100.0100.0100.00.00.00.0100.0100.00.0100.0100.00.0100.0100.00.00.0

cfr:EstimatedIncrementalEffectofCECL

cfr:EstimatedIncrementalEffectofCECL


Estimated
Period End2020-12-31
Value68
Percentage of EstimatedIncrementalEffectofCECL100.0

cfr:ImpactOfNewAccountingPronouncement

cfr:ImpactOfNewAccountingPronouncement


Impact
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.039
Percentage of ImpactOfNewAccountingPronouncement0.00.00.0100.0

cfr:ImpactOfNewAccountingPronouncement us-gaap:FinancialInstrument

us-gaap:DebtSecurities


Impact
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.00.215
Percentage of ImpactOfNewAccountingPronouncement0.00.00.00.5

cfr:ImpactOfNewAccountingPronouncement us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:CommercialandIndustrialTotalEnergyLoans


Impact
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.0-10.453
Percentage of ImpactOfNewAccountingPronouncement0.00.00.0-26.5

cfr:Totalconsumerrealestateloans


Impact
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.02.392
Percentage of ImpactOfNewAccountingPronouncement0.00.00.06.1

us-gaap:CommercialPortfolioSegment


Impact
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.021
Percentage of ImpactOfNewAccountingPronouncement0.00.00.054.0

us-gaap:CommercialRealEstatePortfolioSegment


Impact
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.0-13.519
Percentage of ImpactOfNewAccountingPronouncement0.00.00.0-34.3

us-gaap:ConsumerLoan


Impact
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.0-2.248
Percentage of ImpactOfNewAccountingPronouncement0.00.00.0-5.7

us-gaap:LoansReceivable


Impact
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.0-2.565
Percentage of ImpactOfNewAccountingPronouncement0.00.00.0-6.5

cfr:Interchangeanddebitcardtransactionfees

cfr:Interchangeanddebitcardtransactionfees


Interchangeanddebitcardtransactionfees
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.6414.0933.7463.5032.9663.2553.6084.1173.8683.283.7743.4993.4463.158
Percentage of Interchangeanddebitcardtransactionfees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:NetIncomeLossAvailableToCommonStockAfterParticipatingSecuritiesAllocation

cfr:NetIncomeLossAvailableToCommonStockAfterParticipatingSecuritiesAllocation


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value11511287949246100108108113116115108103979083828177696656737069707564586058565459585760
Percentage of NetIncomeLossAvailableToCommonStockAfterParticipatingSecuritiesAllocation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:Netchangeinoperatingleaserightofuseasset

cfr:Netchangeinoperatingleaserightofuseasset


Netchangeinoperatingleaserightofuseasset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5.8085.8896.5145.9285.8715.625.5065.4514.3344.8330.00.0
Percentage of Netchangeinoperatingleaserightofuseasset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

cfr:OperatingLeaseNonLeaseComponents

cfr:OperatingLeaseNonLeaseComponents


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2.3373.0042.9862.5862.8972.9272.8743.1142.175
Percentage of OperatingLeaseNonLeaseComponents100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:Operatingleaserightofuseassetamortization

cfr:Operatingleaserightofuseassetamortization


Operatingleaserightofuseassetamortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-31
Value8.1298.2838.2278.5218.157.8747.9287.4156.4874.8330.0
Percentage of Operatingleaserightofuseassetamortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

cfr:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax

cfr:OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-193000.0-205000.0-219000.0-232000.0-243000.0-298000.0-265000.0-241000.0-243000.0-272000.0-310000.0-2974000.0-1612000.0-2069000.0-1646000.0-2284000.0-2509000.0-4086000.0-4926000.0-4731000.0-5970000.0-5308000.0-5640000.0-5740000.0-5334000.0-5127000.0
Percentage of OtherComprehensiveIncomeLossTransfersFromAvailableForSaleToHeldToMaturitySecuritiesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:OtherComprehensiveIncomeLossTransfersfromAvailableforsaletoHeldtomaturitySecuritiesbeforeTax

cfr:OtherComprehensiveIncomeLossTransfersfromAvailableforsaletoHeldtomaturitySecuritiesbeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-245000.0-259000.0-277000.0-294000.0-308000.0-377000.0-335000.0-305000.0-308000.0-344000.0-394000.0-3764000.0-2041000.0-2619000.0-2533000.0-3514000.0-3860000.0-6286000.0-7578000.0-7278000.0-9185000.0-8166000.0-8676000.0-8831000.0-8207000.0-7887000.0-8322000.0-8746000.0-9175000.0-9198000.0-9424000.0-8054000.0-9745000.0-8459000.0
Percentage of OtherComprehensiveIncomeLossTransfersfromAvailableforsaletoHeldtomaturitySecuritiesbeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:OtherComprehensiveIncomeReclassificationAdjustmentForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax

cfr:OtherComprehensiveIncomeReclassificationAdjustmentForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-52000.0-54000.0-58000.0-62000.0-65000.0-79000.0-70000.0-64000.0-65000.0-72000.0-84000.0-790000.0-429000.0-550000.0-887000.0-1230000.0-1351000.0-2200000.0-2652000.0-2547000.0-3215000.0-2858000.0-3036000.0-3091000.0-2873000.0-2760000.0
Percentage of OtherComprehensiveIncomeReclassificationAdjustmentForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:Otherchargescommissionsandfees

cfr:Otherchargescommissionsandfees


Otherchargescommissionsandfees
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8.648.3049.4278.377.6639.3659.02108.9339.0629.3719.589.2739.007
Percentage of Otherchargescommissionsandfees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:PreferredStockDividendsEquivalentPerDepositaryShareDeclared

cfr:PreferredStockDividendsEquivalentPerDepositaryShareDeclared


Preferred
Period End2021-06-302021-03-31
Value0.280.36
Percentage of PreferredStockDividendsEquivalentPerDepositaryShareDeclared100.0100.0

cfr:RemainingRevolvingLoansConvertedToTermDuringPeriod us-gaap:CreditFacility

cfr:RemainingRevolvingLoansConvertedToTermDuringPeriod

cfr:RevolvingLoansConvertedtoTerm


Remaining
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value324521234735
Percentage of RemainingRevolvingLoansConvertedToTermDuringPeriod100.0100.0100.0100.0100.0100.0

cfr:RemainingRevolvingLoansConvertedToTermDuringPeriod us-gaap:CreditFacility, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:RevolvingLoansConvertedtoTerm, cfr:CommercialRealEstateBuildingsLandAndOtherLoans


Remaining
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value8.195232.4110.6370.07.639
Percentage of RemainingRevolvingLoansConvertedToTermDuringPeriod25.051.011.22.70.021.6

cfr:RevolvingLoansConvertedtoTerm, cfr:CommercialandIndustrialTotalEnergyLoans


Remaining
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.2945.928-5.4927.1442615
Percentage of RemainingRevolvingLoansConvertedToTermDuringPeriod0.913.0-25.629.956.543.4

cfr:RevolvingLoansConvertedtoTerm, cfr:Totalconsumerrealestateloans


Remaining
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.2050.7930.1320.4210.9051.071
Percentage of RemainingRevolvingLoansConvertedToTermDuringPeriod0.61.70.61.81.93.0

cfr:RevolvingLoansConvertedtoTerm, us-gaap:CommercialPortfolioSegment


Remaining
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value221122109.40511
Percentage of RemainingRevolvingLoansConvertedToTermDuringPeriod67.525.9103.542.719.832.0

cfr:RevolvingLoansConvertedtoTerm, us-gaap:ConsumerLoan


Remaining
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.9613.8611.0575.49410
Percentage of RemainingRevolvingLoansConvertedToTermDuringPeriod6.08.44.923.021.8

cfr:Shorttermoperatingleaserentexpense

cfr:Shorttermoperatingleaserentexpense


Shorttermoperatingleaserentexpense
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value530000.0204000.0456000.0172000.0610000.0561000.01276000.01199000.01038000.01079000.0
Percentage of Shorttermoperatingleaserentexpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:Taxexpensebenefitofsecuritiesgainslosses

cfr:Taxexpensebenefitofsecuritiesgainslosses


Taxexpensebenefitofsecuritiesgainslosses
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.00.00.0-22.8880.0060.0210.0350.0-0.009-0.007-0.013-0.004-0.008-1.703-0.0180.00.047-0.0130.03.897-0.038-0.0180.00.080.0010.011
Percentage of Taxexpensebenefitofsecuritiesgainslosses0.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

cfr:Totaloperatingleaseexpenseexcludingrent

cfr:Totaloperatingleaseexpenseexcludingrent


Totaloperatingleaseexpenseexcludingrent
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value10111111111112119.78.608
Percentage of Totaloperatingleaseexpenseexcludingrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:Trustandinvestmentmanagementfees

cfr:Trustandinvestmentmanagementfees


Trustandinvestmentmanagementfees
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3735323131343231303129302929
Percentage of Trustandinvestmentmanagementfees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:WeightedAverageStrikeRateOutstandingInterestRateCaps

cfr:WeightedAverageStrikeRateOutstandingInterestRateCaps


Weighted
Period End2021-06-302021-03-312020-12-31
Value-0.033.29-0.31
Percentage of WeightedAverageStrikeRateOutstandingInterestRateCaps100.0100.0100.0

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments


Accretion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-29836000.0-30598000.0-30705000.0-30903000.0-30417000.0-31760000.0-30595000.0-28237000.0-28030000.0-28696000.0-26780000.0-24812000.0-24676000.0-24260000.0-23478000.0-22803000.0-22014000.0-21638000.0-20634000.0-20265000.0-19081000.0-19725000.0-19439000.0-18835000.0-18203000.0-17308000.0-17303000.0-15606000.0-14549000.0-13810000.0-11867000.0-11930000.0-9414000.0-8710000.0-6749000.0-5730000.0-4683000.0-4539000.0-3851000.0-2685000.0-2537000.0-2368000.0-2091000.0-1800000.0-1677000.0-2497000.0
Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet

cfr:CommercialandIndustrialTotalEnergyLoans


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-0.0650.284.4890.035332.8741.261.971-0.047
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

cfr:Totalconsumerrealestateloans


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.093-0.4320.5410.515-0.476-0.0950.3790.1030.2861.689
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet-143.1-154.312.10.0-1.4-0.313.28.214.5-3593.6

us-gaap:CommercialPortfolioSegment


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-0.280.9863.0817.4840.952.6544.2191.522.4541.938
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet430.8352.168.60.02.77.9146.8120.6124.5-4123.4

us-gaap:CommercialRealEstatePortfolioSegment


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.101-0.6263.4120.23.481-0.040.354-0.0460.528-0.03
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet-155.4-223.676.00.09.9-0.112.3-3.726.863.8

us-gaap:ConsumerLoan


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.7421.7112.0421.9772.0512.3934.9213.5342.5823.235
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet-2680.0611.145.50.05.97.1171.2280.5131.0-6883.0

us-gaap:LoansReceivable


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.5911.91913104138126.3717.8216.785
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet-2447.7685.4302.20.0117.1114.6443.5505.6396.8-14436.2

us-gaap:AvailableForSaleSecuritiesGrossRealizedGains

us-gaap:AvailableForSaleSecuritiesGrossRealizedGains


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.00.00.01080.0310.0960.8030.00.00.00.0030.00.0010.00.00.02.1550.0010.0110.00.00.00.2280.0030.0330.0030.01.1950.00.0060.0054.4350.00.3712.1370.06.4090.00.0090.00.00.001
Percentage of AvailableForSaleSecuritiesGrossRealizedGains0.00.00.0100.0100.0100.0100.00.00.00.0100.00.0100.00.00.00.0100.0100.00.0100.00.00.00.0100.0100.0100.0100.00.0100.00.0100.0100.0100.00.0100.0100.00.0100.00.0100.00.00.0100.0

us-gaap:AvailableForSaleSecuritiesTransfersToTradingGainsLossesNet

us-gaap:AvailableForSaleSecuritiesTransfersToTradingGainsLossesNet


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value0-69000.0-9000.01000.0-22000.0115000.0-6000.0-201000.027000.04000.0126000.0-8000.023000.0-36000.08000.0-8000.0-56000.013000.0-156000.00-2000.01000.0-13000.06000.0-32000.0-14000.0-10000.013000.00-3000.0-20000.0-29000.0-377000.0-3000.0-104000.022000.0-19000.0-60000.0-26000.04000.07000.02000.020000.071000.0
Percentage of AvailableForSaleSecuritiesTransfersToTradingGainsLossesNet0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareCashPaid


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.720.720.720.710.710.710.710.710.710.670.670.670.670.570.570.570.570.540.540.540.540.530.530.530.530.510.510.510.510.50.50.50.50.480.480.480.480.460.460.460.460.450.450.450.450.43
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CurrentIncomeTaxExpenseBenefit

us-gaap:CurrentIncomeTaxExpenseBenefit


Current
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value143.72515-33.61424294.272141414-0.115-1.1521.3610.746141513158.4971213131016161512191614119.959121521181720102413128.2371416
Percentage of CurrentIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndEquitySecuritiesGainLoss

us-gaap:DebtAndEquitySecuritiesGainLoss


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.01080.0280.0960.1690.0-0.043-0.034-0.06-0.019
Percentage of DebtAndEquitySecuritiesGainLoss0.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesHeldToMaturityAllowanceForCreditLossPeriodIncreaseDecrease us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesHeldToMaturityAllowanceForCreditLossPeriodIncreaseDecrease

us-gaap:DebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0-2000.00-12000.0-28000.0-15000.0
Percentage of DebtSecuritiesHeldToMaturityAllowanceForCreditLossPeriodIncreaseDecrease0.0100.00.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-1529000.0-1529000.0-1330000.0-1330000.0-1329000.0-1330000.0-1405000.0-1406000.0-1406000.0-1406000.0-1251000.0-1250000.0-1251000.0-1250000.0-1357000.0-1357000.0-1358000.0-1357000.0-1556000.0-1585000.0-1553000.0-1553000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.213.213.0723.0733.0723.0722.6932.6932.6932.6932.9792.9792.9792.9792.7792.7792.782.7792.8892.892.8892.892.9832.9832.9832.9833.1283.1293.1283.1292.7712.7722.7722.7722.6032.6032.6032.6032.8582.8592.8582.8592.7522.7522.752
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanInterestCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value836000.0835000.01253000.01252000.01253000.01252000.01618000.01618000.01618000.01618000.01474000.01475000.01474000.01475000.01547000.01547000.01548000.01547000.01728000.01732000.01749000.01749000.02053000.02052000.02053000.02052000.02000000.02001000.02000000.02001000.01835000.01835000.01836000.01835000.01950000.01951000.01950000.01950000.01973000.01973000.01973000.01973000.01931000.01931000.01931000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-845000.0-846000.0-489000.0-491000.0-490000.0-490000.0330000.0331000.0331000.0331000.0-254000.0-254000.0-254000.0-254000.0125000.0125000.0126000.0125000.01235000.0427000.0600000.0412000.0819000.0817000.0819000.0818000.0-456000.0-456000.0-457000.0-456000.0703000.0703000.0703000.0703000.0972000.0775000.0775000.0576000.0-103000.0-103000.0-103000.0-103000.0-92000.0-92000.0-92000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value171616161515141312121212121211111112121111111110109.98910109.7559.7029.6369.7549.6179.4649.4029.4329.4459.497
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation

us-gaap:DerivativeGainLossOnDerivativeNet

cfr:CommercialLoanLeaseInterestRateSwaps, us-gaap:DesignatedAsHedgingInstrument, us-gaap:InterestIncome


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-25000.0-28000.0-32000.0-36000.0-35000.0-8000.08000.024000.028000.026000.024000.012000.031000.0-42000.0-134000.0-149000.0-198000.0-245000.0-305000.0-331000.0-338000.0-388000.0-446000.0-462000.0-463000.0-425000.0-466000.0-493000.0-516000.0-539000.0-596000.0-609000.0-609000.0-623000.0-640000.0-632000.0-648000.0
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:CommercialLoanLeaseInterestRateSwaps, us-gaap:DesignatedAsHedgingInstrument, us-gaap:OtherExpense


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value2000.03000.03000.02000.03000.01000.00-1000.01000.0000-1000.00-9000.0-2000.0-2000.0-1000.0-41000.04000.0-7000.005000.006000.00-9000.012000.0-9000.09000.0-13000.011000.0-9000.015000.0-2000.031000.05000.0
Percentage of DerivativeGainLossOnDerivativeNet-8.0-10.7-9.4-5.6-8.6-12.50.0-4.23.60.00.00.0-3.2-0.06.71.31.00.413.4-1.22.1-0.0-1.1-0.0-1.3-0.01.9-2.41.7-1.72.2-1.81.5-2.40.3-4.9-0.8

us-gaap:CommodityContract, us-gaap:Nondesignated, us-gaap:OtherIncome


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value969000.01154000.0711000.0379000.0539000.0139000.0181000.0109000.0110000.0103000.0303000.0456000.0-54000.090000.053000.0231000.0104000.052000.0166000.0110000.013000.0132000.0141000.01000.038000.028000.018000.07000.011000.082000.0165000.075000.089000.0167000.08000.052000.027000.0
Percentage of DerivativeGainLossOnDerivativeNet-3876.0-4121.4-2221.9-1052.8-1540.0-1737.52262.5454.2392.9396.21262.53800.0-174.2-214.3-39.6-155.0-52.5-21.2-54.4-33.2-3.8-34.0-31.6-0.2-8.2-6.6-3.9-1.4-2.1-15.2-27.7-12.3-14.6-26.8-1.2-8.2-4.2

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated, us-gaap:OtherIncome


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value030000.0010000.011000.07000.010000.012000.012000.017000.043000.053000.091000.059000.0199000.083000.09000.09000.08000.08000.08000.06000.04000.0-37000.066000.045000.044000.043000.038000.037000.072000.030000.021000.052000.00-5000.05000.0
Percentage of DerivativeGainLossOnDerivativeNet-0.0-107.1-0.0-27.8-31.4-87.5125.050.042.965.4179.2441.7293.5-140.5-148.5-55.7-4.5-3.7-2.6-2.4-2.4-1.5-0.98.0-14.3-10.6-9.4-8.7-7.4-6.9-12.1-4.9-3.4-8.3-0.00.8-0.8

us-gaap:InterestRateContract, us-gaap:Nondesignated, us-gaap:OtherExpense


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0-1000.001000.00-1000.00002000.02000.017000.0-21000.0002000.0-1000.000000-40000.0-5000.02000.01000.0-5000.02000.00-13000.0-28000.0-37000.0-18000.0-64000.0-15000.010000.0
Percentage of DerivativeGainLossOnDerivativeNet-0.03.6-0.0-2.8-0.0-12.50.00.00.08.316.754.850.0-0.0-0.0-1.00.4-0.0-0.0-0.0-0.0-0.08.71.1-0.5-0.21.0-0.4-0.02.24.66.12.910.02.4-1.5

us-gaap:InterestRateContract, us-gaap:Nondesignated, us-gaap:OtherIncome


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value141000.01587000.0798000.0280000.0296000.02039000.0817000.0215000.0387000.0586000.01223000.0699000.0702000.01488000.01061000.01085000.0607000.0370000.01095000.0374000.0979000.0435000.0725000.0293000.0240000.01322000.0507000.0414000.0644000.0221000.01202000.054000.067000.0118000.02459000.01284000.0197000.0
Percentage of DerivativeGainLossOnDerivativeNet-564.0-5667.9-2493.8-777.8-845.7-25487.510212.5895.81382.12253.85095.85825.02264.5-3542.9-791.8-728.2-306.6-151.0-359.0-113.0-289.6-112.1-162.6-63.4-51.8-311.1-108.8-84.0-124.8-41.0-201.7-8.9-11.0-18.9-384.2-203.2-30.4

us-gaap:PutOption, us-gaap:Nondesignated, us-gaap:OtherIncome


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value12000.0006000000.000
Percentage of DerivativeGainLossOnDerivativeNet-37.5-0.0-0.0-75000.00.00.0

us-gaap:DistributedEarnings

us-gaap:DistributedEarnings


Distributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value4545454444444444444242424236363636343433333233333332-32.175-32.113-32.05-30.371-208.1123030-28.675-203.4762929-28.152
Percentage of DistributedEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value46464544444444444442424343363636363434343332333333323232323030303028292929282828282727272725
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value46464544444444444442424343363636
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPreferredStockCash

us-gaap:DividendsPreferredStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1669000.02151000.00002016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02015000.02688000.00
Percentage of DividendsPreferredStockCash100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DividendsPreferredStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1669000.02151000.00002016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.0
Percentage of DividendsPreferredStockCash100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeBenefitsAndShareBasedCompensation

us-gaap:EmployeeBenefitsAndShareBasedCompensation


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1822151618242121
Percentage of EmployeeBenefitsAndShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value514000.0367000.0603000.0450000.0624000.0465000.0591000.0452000.0732000.0584000.0824000.0587000.0753000.0667000.01400000.0953000.01116000.01086000.01331000.0882000.01048000.0869000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquipmentExpense

us-gaap:EquipmentExpense


Equipment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value27282726262525222221212120191918181717171717161615151516151414141414131413131313121212121111
Percentage of EquipmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities

us-gaap:ExcessTaxBenefitFromShareBasedCompensationOperatingActivities


Excess
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1082000.0-3136000.0-158000.0-138000.0-220000.0-336000.0-845000.0-471000.0-415000.0-716000.0-487000.0-218000.0-949000.0-2211000.0-3218000.0-265000.0-2064000.0-3515000.0-3453000.0-1735000.084000.041000.0509000.0127000.0678000.075000.0921000.0610000.0317000.01335000.0436000.01875000.0253000.0122000.061000.034000.035000.041000.029000.026000.0213000.0154000.070000.0194000.0160000.0259000.0
Percentage of ExcessTaxBenefitFromShareBasedCompensationOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FederalDepositInsuranceCorporationPremiumExpense


Federal
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.8772.9282.7062.3722.82.6242.3742.4912.4532.8082.2194.6944.6054.8794.7814.8625.574.9155.0164.5584.1973.6573.6673.6763.5633.6133.5493.4213.1453.1173.0372.9212.8352.8893.1592.5932.8382.4972.7732.5832.5984.764.9184.6615.4295.443
Percentage of FederalDepositInsuranceCorporationPremiumExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

cfr:CommercialandIndustrialTotalEnergyLoans


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0651.1532.7760.00.00.0660.6260.740.0290.047
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.00.00.0100.0100.0100.0100.0100.0

cfr:Totalconsumerrealestateloans


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.2950.7160.1370.5730.6110.380.350.4540.3150.089
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery453.862.14.90.00.0575.855.961.41086.2189.4

us-gaap:CommercialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.9651.2031.0121.1210.8911.7151.1161.1850.9350.75
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery1484.6104.336.50.00.02598.5178.3160.13224.11595.7

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.0360.6260.2610.0420.030.1130.0540.0460.0290.09
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery55.454.39.40.00.0171.28.66.2100.0191.5

us-gaap:ConsumerLoan


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.142.3492.3862.2422.1272.6122.6472.8232.5212.462
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery3292.3203.786.00.00.03957.6422.8381.58693.15238.3

us-gaap:LoansReceivable


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.5016.0476.5723.9783.6594.8864.7935.2483.8293.438
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery5386.2524.5236.70.00.07403.0765.7709.213203.47314.9

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

cfr:CommercialandIndustrialTotalEnergyLoans


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.01.4337.2650.035333.52.02.00.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0100.0100.00.0100.0100.0100.0100.0100.00.0

cfr:Totalconsumerrealestateloans


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.3880.2840.6781.0880.1350.2850.7290.5570.6011.778
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.019.89.30.00.40.820.827.930.10.0

us-gaap:CommercialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.6852.1894.0938.6051.8414.3695.3352.7053.3892.688
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0152.856.30.05.312.9152.4135.2169.40.0

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.1373.6730.2423.5110.0730.4080.00.5570.06
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.050.60.010.00.211.70.027.90.0

us-gaap:ConsumerLoan


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.8824.064.4284.2194.1785.0057.5686.3575.1035.697
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0283.360.90.011.914.8216.2317.9255.20.0

us-gaap:LoansReceivable


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.0927.9662014444317111110
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.0555.9277.20.0127.6128.8501.1581.0582.50.0

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2


Financing
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-0.733-3.269102.198-0.1313.9421.6726.1910.0-0.843-13.38614-0.414451.889111011-38.36761-0.018-0.03-0.0290.6131.815-0.2175.9480.793-1.3897.5353.1811.888
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment2100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2 us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:CommercialRealEstateBuildingsLandAndOtherFinancingReceivable


Financing
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-0.0216.6060.02.1861.415.8980.00.00.00.00.00.0-1.455-0.0010.00.0-0.06-0.0613.0690.0-1.2533.2742.1131.613
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment20.663.80.055.584.395.30.0-0.0-0.00.0-0.00.0-13.5-0.0-0.0-0.0-3.328.151.60.090.243.566.485.4

us-gaap:CommercialPortfolioSegment


Financing
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1.223-2.2371.4542.198-0.0271.6330.2620.2930.0-0.843-1.3282.171-0.1093.2320.6430.00.5170.00.4880.017-0.018-0.03-0.0290.613
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment2166.868.414.0100.020.641.415.74.70.0100.09.915.326.37.134.00.04.80.0-1.30.0100.0100.0100.0100.0

us-gaap:ConstructionLoans


Financing
Period End2020-12-312020-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-0.164-0.0110.3880.00.00.0-0.221-0.003-0.0110.2350.00.00.00.0
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment222.40.3-93.70.00.00.0-2.1-0.00.00.4-0.0-0.0-0.00.0

us-gaap:ConsumerLoan


Financing
Period End2020-09-30
Value-1.0
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment230.6

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2


Financing
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value4.9620.0102.1910.0015.4011.8166.2080.00.00.0150.387462.4811115111.947620.00.00.00.7092.0420.06.0550.8191.07.534.3481.9551.871
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment2100.00.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2 us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:CommercialRealEstateBuildingsLandAndOtherFinancingReceivable


Financing
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value0.06.6060.02.1091.4465.9010.00.00.00.00.00.00.0-0.0010.00.0-0.0010.03.1220.00.5213.2782.4851.680.714
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment20.063.70.039.079.695.10.00.00.00.00.00.00.0-0.00.00.0-0.00.051.60.052.143.557.285.938.2

us-gaap:CommercialPortfolioSegment


Financing
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.0010.01.4692.1910.03.1680.370.3070.00.00.02.2030.03.2420.7840.01.6380.00.4910.0190.423-0.018-0.010.314
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment20.00.014.2100.00.058.720.44.90.00.00.013.80.07.031.60.010.80.025.20.00.00.00.044.3

us-gaap:ConstructionLoans


Financing
Period End2020-12-312020-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-0.1750.00.3880.00.00.00.00.00.00.2430.00.00.00.0
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment2-3.50.0100.30.00.00.00.00.00.00.40.00.00.00.0

us-gaap:GainLossOnSaleOfOtherAssets

us-gaap:GainLossOnSaleOfOtherAssets


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1742000.0134000.0-530000.0-133000.0536000.0-397000.0-304000.0881000.0698000.04437000.0-850000.0669000.01471000.03982000.02652000.0662000.0850000.0533000.03245000.0-223000.0-36000.0632000.0979000.0-59000.066000.0779000.0102000.076000.0-792000.0-147000.0-277000.065000.0319000.0-3342000.0-421000.0-1584000.0-2121000.0-477000.0-437000.0-1937000.0-706000.0-1597000.0-1434000.0-1274000.0-1357000.0-1864000.0
Percentage of GainLossOnSaleOfOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInDeposits


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value18081909151682045385015551098-309.84-854.341800352-681.279-194.611469789-528.591330704820130-186.6219483-308.46813645973-173.0737670990034-453.4621252968368152692959394230-50.745577218420
Percentage of IncreaseDecreaseInDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet

us-gaap:IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value320-193.57350819418-524.364494-118.85292-140.399283106-54.751-115.6031497329-81.7921727139-199.63626139-11.843-198.912222-32.02647-153.018813739-50.959-40.143-54.82118-85.1046384207744-7.759-42.957-0.595
Percentage of IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value112-73.164105-78.93508153-55.71550-32.63466-23.91266-23.55565-30.61175-55.70518-37.92956-29.41855-107.4052836298.75149-14.63319-54.01751-9.464.944-29.85918-41.76957-9.843-4.124-27.621-72.294-18.99531-10.488
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value68-26.2873.938-19.903-153.703196-74.7357636-56.098-6.6368.631-54.55228110-3.30312-48.702-3.1391.6681.24-5.714-23.72129-8.388-9.42333-14.497-14.666-29.0980.593-7.312-22.951-140.719-25.344-5.5429.883-9.286-9.371167.245-25.293-12.9962712-4.067
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPayablesToBrokerDealers

us-gaap:IncreaseDecreaseInPayablesToBrokerDealers


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value33621-210.15720511
Percentage of IncreaseDecreaseInPayablesToBrokerDealers100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInTradingSecurities

us-gaap:IncreaseDecreaseInTradingSecurities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-2.4722.153-0.0390.0-12.62212-2.922.0642.65-1.5821.564-1.1693.589-1.3260.824-4.1026.0321.0880.542-0.241-0.6210.4440.3350.606-0.0240.236-0.2620.1990.0-0.9090.099-1.488-5.887-7.4115-1.74-0.2833.237-2.2141.306-6.2295.6450.167-0.899-0.7780.485
Percentage of IncreaseDecreaseInTradingSecurities100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeOperating


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value263246248251254265278286288281281268257243234227219211204197193192189190185184182181173163163160159158160158155156158154156153154155155152
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseDeposits


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.4993.5174.3415.3976.2271620252627242217107.4795.6682.1731.8681.9391.7491.7731.7871.9482.1382.1822.7562.9032.9912.5672.5613.0473.5223.8824.0084.3824.5984.5474.5724.9765.3065.9465.9516.7017.3347.3778.561
Percentage of InterestExpenseDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseFederalFundsPurchased

us-gaap:InterestExpenseFederalFundsPurchased


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value7000.08000.06000.079000.0
Percentage of InterestExpenseFederalFundsPurchased100.0100.0100.0100.0

us-gaap:InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.4770.4820.4863.0374.3995.045.225.0164.4642.2920.6310.6340.6730.5230.1870.1390.0520.0440.0520.0560.0540.0390.0380.0360.0380.0350.0340.0270.0320.030.0290.030.0350.0370.0340.0340.0350.0630.0830.1310.1470.1160.1160.058
Percentage of InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm

us-gaap:InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm


Interest
Period End2020-12-312020-09-302020-06-302019-06-30
Value00318000.00
Percentage of InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm0.00.0100.00.0

us-gaap:InterestExpenseJuniorSubordinatedDebentures

us-gaap:InterestExpenseJuniorSubordinatedDebentures


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.6380.6460.6670.70.9881.2051.3051.4251.4781.4981.4441.3941.3111.1421.0651.020.9620.9080.8890.8390.8030.750.7090.6890.6720.6550.6670.6590.6010.5611.3531.711.691.6731.711.7111.7111.6741.711.711.6911.6721.6851.7411.7831.773
Percentage of InterestExpenseJuniorSubordinatedDebentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value570000.0395000.0480000.02958000.0
Percentage of InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase100.0100.0100.0100.0

us-gaap:InterestExpenseSubordinatedNotesAndDebentures

us-gaap:InterestExpenseSubordinatedNotesAndDebentures


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value1.1641.1641.1641.1641.1641.1641.1651.1641.164
Percentage of InterestExpenseSubordinatedNotesAndDebentures100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeDepositsWithFinancialInstitutions

us-gaap:InterestIncomeDepositsWithFinancialInstitutions


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.6142.4331.9991.5121.2578.1258.3648.7597.828101414131414109.0766.8364.7374.1113.6023.6532.381.9371.8361.972.682.962.6812.4042.3562.0771.4981.3531.3521.1150.9030.931.9031.8111.4721.1711.6191.4380.9890.855
Percentage of InterestIncomeDepositsWithFinancialInstitutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value25724022822321369242245247235245239229222215208206200192189181161152180179172174177164153153150149146150149146148150136135132130132133124
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeFederalFundsSold

us-gaap:InterestIncomeFederalFundsSold


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value8000.03000.033000.0683000.0
Percentage of InterestIncomeFederalFundsSold100.0100.0100.0100.0

us-gaap:InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell

us-gaap:InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.0110.0190.0630.8021.2011.1941.5411.5881.9251.3991.4150.7610.4220.2440.1630.1070.1070.0480.0590.0580.0380.0280.0210.020.020.020.0230.020.0150.0160.0290.0220.0290.0270.0330.0150.0170.0150.0130.0160.0150.0280.0210.01
Percentage of InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesPurchasedUnderAgreementsToResell

us-gaap:InterestIncomeSecuritiesPurchasedUnderAgreementsToResell


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value4000.01000.030000.0119000.0
Percentage of InterestIncomeSecuritiesPurchasedUnderAgreementsToResell100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesTaxExempt

us-gaap:InterestIncomeSecuritiesTaxExempt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value56565758595858575859605957565554555656535050504948464339373533312827252322222223232220202019
Percentage of InterestIncomeSecuritiesTaxExempt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeSecuritiesTaxable

us-gaap:InterestIncomeSecuritiesTaxable


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value20202122232629323024232121202023232525252525262727302622222122232527293234363430313129303129
Percentage of InterestIncomeSecuritiesTaxable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaid

us-gaap:InterestPaid


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value6.2179.7197.6669.9228.5442324333234292718138.768.9453.4093.2573.1552.9612.9762.7943.0763.0613.2063.6394.1864.0582.9663.4954.7685.6425.9836.0566.4656.9066.639.3776.992157.839168.94817
Percentage of InterestPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeAmortizationOfDiscount

us-gaap:InvestmentIncomeAmortizationOfDiscount


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.7050.6370.6320.6370.5710.5851.3921.2741.3781.1831.5992.5692.011.7761.631.7832.1052.392.8272.4973.1382.6152.8362.5192.6292.6981.9051.8651.4461.5862.3031.596
Percentage of InvestmentIncomeAmortizationOfDiscount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeAmortizationOfPremium

us-gaap:InvestmentIncomeAmortizationOfPremium


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value3031313130323129292928272626252424242322222222212020191715151413
Percentage of InvestmentIncomeAmortizationOfPremium100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeNetAmortizationOfDiscountAndPremium

us-gaap:InvestmentIncomeNetAmortizationOfDiscountAndPremium


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-29836000.0-30598000.0-30705000.0-30903000.0-30417000.0-31760000.0-30595000.0-28237000.0-28030000.0-28696000.0-26780000.0-24812000.0-24679000.0-24260000.0-23478000.0-22803000.0-22014000.0-21638000.0-20634000.0-20265000.0-19081000.0-19725000.0-19439000.0-18835000.0-18203000.0-17308000.0-17303000.0-15606000.0-14549000.0-13810000.0-11867000.0-11930000.0
Percentage of InvestmentIncomeNetAmortizationOfDiscountAndPremium100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value97931049390989793
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans

cfr:NonAccrualLoans


Loans
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value427000.0453000.0600000.0670000.0570000.01000000.0900000.0900000.01100000.01000000.01000000.01300000.01400000.01500000.01268000.0783000.0798000.0851000.0700000.0647000.0936000.0844000.0488000.0352000.0364000.0397000.0400000.0414000.0355000.0358000.0400000.0568000.0591000.0608000.0700000.0646000.0639000.0642000.0700000.0823000.01000000.0944000.0
Percentage of LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense

us-gaap:NoninterestExpense


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value215210222202199224220208203201199193188196196186188187193180179179173175173171169163163157154151149155146144142142143137136140133132134134
Percentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense us-gaap:StatementBusinessSegments

cfr:Bank


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value183179166188
Percentage of NoninterestExpense85.185.383.484.3

cfr:FrostWealthAdvisors


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value30293033
Percentage of NoninterestExpense13.914.215.315.0

cfr:NonBanks


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.1311.0542.4221.655
Percentage of NoninterestExpense1.00.51.20.7

us-gaap:NoninterestIncome

us-gaap:NoninterestIncome


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value919391837721295898296878785919081818393827896838378838280797778737277757169716779707270706971
Percentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome us-gaap:StatementBusinessSegments

cfr:Bank


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value485342173
Percentage of NoninterestIncome53.657.755.381.4

cfr:FrostWealthAdvisors


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value42393439
Percentage of NoninterestIncome46.642.545.018.7

cfr:NonBanks


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.231-0.153-0.225-0.231
Percentage of NoninterestIncome-0.3-0.2-0.3-0.1

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:NoninterestIncomeOtherOperatingIncome


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9.478.219138.9917.66417148.637.304131111111212106.8877.474197.9937.3216.0449.833107.3178.339.4577.3328.9386.5299.1776.5587.786119.2418.0956.1877.181012111114121211
Percentage of NoninterestIncomeOtherOperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OccupancyNet

us-gaap:OccupancyNet


Occupancy
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value26262625252524242119171919191819191917181817161716151514131212131211111312111112111111121111
Percentage of OccupancyNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal

us-gaap:OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal


Off
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value4379000.065000.0489000.0-3276000.04775000.02287000.000
Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal100.0100.0100.0100.0100.0100.00.00.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value8.08.17.88.08.17.77.87.66.16.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value30-160.0382020156120-45.878107157197104-99.877-13.865-181.504238.4358627-374.613-102.88215699-28.72377-121.47526180.6853512-29.928-8.591-83.776-29.808-34.65240202.373387282
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value24-126.43151512395-36.2448412415682-78.904-10.953-143.388215.4835617-243.498-66.87410164-18.6750-78.95917120.446237.951-19.453-5.585-54.454-19.375-22.52326131.5432546
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value6.389-33.6084.2214.2073225-9.63422334121-20.973-2.912-38.1161.7982.952309.634-131.115-36.0085434-10.05327-42.5169.2446.550.239124.282-10.475-3.006-29.322-10.433-12.129147.210.83132528
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:OtherComprehensiveIncomeLocation

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value24-126.436.77515123181-39.1028412415676-78.931-11.0-143.403
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableforsaleSecurities


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value24-126.431515123181-36.2238412415682-78.931-11.0-143.403212.3195617-243.427-66.89910174-18.73950-78.95917120.467237.951-18.687-5.594-54.45-19.372-19.71926
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0234.3100.0100.0100.092.6100.0100.0100.0107.5100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value31-158.5099.90721157122-48.11710815919998-98.627-12.614-180.254239.7928728-369.441-101.297156100-30.85179-119.72628-20.709-7.988273.56-8.144-15.191-90.412-36.428-56.4253213-5.137
Percentage of OtherComprehensiveIncomeLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302012-09-302012-06-302011-09-302011-06-30
Value-1529000.0-1529000.010188000.0-1330000.0-1329000.0-1330000.02239000.0-1406000.0-1406000.0-1406000.05974000.0-1250000.0-1251000.0-1250000.0-760000.0-1357000.0-1358000.0-1357000.0-5172000.0-1585000.0-878000.0-1553000.0-66674000.0-1748000.0-1749000.0-1427000.0-1428000.0-783000.0-782000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-1.208-1.2088.049-1.05-1.051-1.0511.769-1.111-1.11-1.1114.72-0.988-0.988-0.987-0.411-0.882-0.883-0.882-3.362-1.03-0.571-1.009-43.338-1.136-1.137-1.13723-0.437-0.436-0.437-19.743-1.066-1.065-1.0668.768-0.928-0.928-0.79916-0.509
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302012-09-302012-06-302011-09-302011-06-30
Value-321000.0-321000.02139000.0-280000.0-278000.0-279000.0470000.0-295000.0-296000.0-295000.01254000.0-262000.0-263000.0-263000.0-349000.0-475000.0-475000.0-475000.0-1810000.0-555000.0-307000.0-544000.0-23336000.0-612000.0-612000.0-499000.0-500000.0-274000.0-274000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.00.00.01080.0270.0970.1690.0-0.043-0.034-0.06-0.019-0.024-4.867-0.050.00.109-0.0370.014-0.107-0.0520.00.2280.0030.0330.0020.01.179-0.0140.0060.0054.4350.00.37
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax0.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.00.00.0860.0210.0760.1340.0-0.034-0.027-0.047-0.015-0.016-3.164-0.0320.00.071-0.0250.09.687-0.069-0.0340.00.1480.0020.0210.0020.00.766-0.0090.0040.0032.8830.00.24
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax0.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.00.00.0220.0060.0210.0350.0-0.009-0.007-0.013-0.004-0.008-1.703-0.0180.00.038-0.0120.05.216-0.038-0.0180.00.080.0010.0120.00.00.413-0.0050.0020.0021.5520.00.13
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax0.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-1.529-1.529-1.33-1.33-1.329-1.33-1.405-1.406-1.406-1.406-1.251-1.25-1.251-1.25-1.357-1.357-1.358-1.357-2.583-1.585-1.553-1.5532.128-1.748-1.749-1.74936-0.672-0.671-0.672-30.374-1.64-1.639-1.6413-1.427-1.428
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1.208-1.208-1.05-1.05-1.051-1.051-1.11-1.111-1.11-1.111-0.988-0.988-0.988-0.987-0.882-0.882-0.883-0.882-1.679-1.03-1.01-1.0091.383-1.136-1.137-1.137
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-0.321-0.321-0.28-0.28-0.278-0.279-0.295-0.295-0.296-0.295-0.263-0.262-0.263-0.263-0.475-0.475-0.475-0.475-0.904-0.555-0.543-0.5440.745-0.612-0.612-0.61212-0.235-0.235-0.235-10.631-0.574-0.574-0.5744.721-0.499-0.5
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:OtherComprehensiveIncomeLossTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value6.71-33.2872.0824.4873325-10.10422334120-20.711-2.649-37.8532.1473.4273010-129.305-35.4535435-10.79827-41.9049.856-7.247-2.7969.5411.246-2.851-5.316-31.644-12.75-19.75114.782-1.7991.98322250.306
Percentage of OtherComprehensiveIncomeLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value30-159.7792020156230-45.516107158198104-96.147-11.884-178.904257.0829033-366.926-95.641165122-20.15486-113.26834279.4644521-19.325-0.551-74.025-21.344-30.21740201.8823878828.29-135.024556
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value24-126.2251616123181-35.9588512415682-75.957-9.388-141.334234.6035821-238.501-62.16810779-13.09956-73.62522176.1522913-12.562-0.358-48.116-13.874-19.6426131.2242551535.388
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.441-33.5544.2794.2693248-9.55822334121-20.19-2.496-37.572.6772.4793111-128.425-33.4735742-7.05530-39.643129.4633.312157.501-6.763-0.193-25.909-7.47-10.577147.340.6581327282.902-47.2571519
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncome

us-gaap:OtherNoncashIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value603000.0740000.0836000.0960000.01013000.0922000.0939000.0914000.0932000.0898000.0870000.0847000.0843000.0820000.0823000.0802000.0782000.0783000.0921000.0933000.0878000.0867000.0896000.0875000.0928000.0886000.0907000.0897000.0732000.0682000.0704000.0700000.0806000.0893000.0996000.0968000.01006000.01068000.01068000.01016000.0973000.0988000.01164000.01179000.01078000.01096000.0
Percentage of OtherNoncashIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoninterestExpense

us-gaap:OtherNoninterestExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value41364538364647444641474140434741454153414240414142404240453836363741353436323634333230293330
Percentage of OtherNoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForProceedsFromLoansAndLeases


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1291.635406-695.255258267162212417868322290117373227441196335214396-1.4948954132-41.759184225242662532372157573-47.259417322367133-87.9483656-75.42778-4.123-94.641-156.791
Percentage of PaymentsForProceedsFromLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRepurchaseOfRedeemablePreferredStock

us-gaap:PaymentsForRepurchaseOfRedeemablePreferredStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.00.00.01500.00.0
Percentage of PaymentsForRepurchaseOfRedeemablePreferredStock0.00.00.0100.00.00.0

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1669000.02151000.00002016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02015000.02688000.000
Percentage of PaymentsOfDividendsPreferredStockAndPreferenceStock100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:PaymentsOfStockIssuanceCosts us-gaap:StatementClassOfStock

us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:SeriesBPreferredStock


Payments
Period End2020-11-19
Value4500000.0
Percentage of PaymentsOfStockIssuanceCosts100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecurities

us-gaap:PaymentsToAcquireAvailableForSaleSecurities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3464551251745843051687134905260302915263207352982073245439031283594666340856570081383044912158772106855495268561720492174412449884342360761098425570.0120.01619519060733287068
Percentage of PaymentsToAcquireAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:PaymentsToAcquireHeldToMaturitySecurities


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312011-09-302010-12-312010-09-30
Value0.00.00.01.56490.00.00.00.00.00.01.50.00.00.00.00.00.00.00.01.350.00.00.00.00.00.00.00.036871332370.016273.833
Percentage of PaymentsToAcquireHeldToMaturitySecurities0.00.00.0100.0100.00.00.00.00.00.00.0100.00.00.00.00.00.00.00.00.0100.00.00.00.00.00.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:PreferredStockAccretionOfRedemptionDiscount

us-gaap:PreferredStockAccretionOfRedemptionDiscount


Preferred
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0005514000.000
Percentage of PreferredStockAccretionOfRedemptionDiscount0.00.00.0100.00.00.0

us-gaap:PreferredStockDividendRatePercentage dei:LegalEntity

us-gaap:PreferredStockDividendRatePercentage

cfr:CullenFrost


Preferred
Period End2021-06-302021-03-312020-11-192020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value04.454.4500.053750000.05375
Percentage of PreferredStockDividendRatePercentage0.0100.0100.00.0100.00.00.00.0100.0

us-gaap:PreferredStockDividendRatePercentage us-gaap:StatementClassOfStock

us-gaap:SeriesBPreferredStock


Preferred
Period End2020-11-19
Value4.45
Percentage of PreferredStockDividendRatePercentage100.0

us-gaap:PreferredStockDividendsAndOtherAdjustments

us-gaap:PreferredStockDividendsAndOtherAdjustments


Preferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value1669000.02151000.00002016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02016000.02015000.02016000.02016000.02015000.02688000.0000
Percentage of PreferredStockDividendsAndOtherAdjustments100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:PreferredStockDividendsAndOtherAdjustments us-gaap:StatementBusinessSegments

cfr:NonBanks


Preferred
Period End2021-06-302021-03-312020-06-302020-03-31
Value1669000.02151000.002016000.0
Percentage of PreferredStockDividendsAndOtherAdjustments100.0100.00.0100.0

us-gaap:PreferredStockDividendsPerShareDeclared

us-gaap:PreferredStockDividendsPerShareDeclared


Preferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value11.1314.340000.340.330.340.330.340.330.340.330.340.330.340.330.340.330.340.330.340.330.340.330.340.330.340.330.340.340.330.450
Percentage of PreferredStockDividendsPerShareDeclared100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromIssuanceOfPreferredStockAndPreferenceStock us-gaap:StatementClassOfStock

us-gaap:ProceedsFromIssuanceOfPreferredStockAndPreferenceStock

us-gaap:SeriesBPreferredStock


Proceeds
Period End2020-11-19
Value145
Percentage of ProceedsFromIssuanceOfPreferredStockAndPreferenceStock100.0

us-gaap:ProceedsFromIssuanceOfTrustPreferredSecurities dei:LegalEntity, us-gaap:DebtInstrument

us-gaap:ProceedsFromIssuanceOfTrustPreferredSecurities

cfr:CullenFrost, cfr:TrustPreferredSecuritiesTierTwoCapitalAllowablePortion


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.01330.00.00.0133
Percentage of ProceedsFromIssuanceOfTrustPreferredSecurities0.0100.00.00.00.0100.0

us-gaap:ProceedsFromLifeInsurancePolicies

us-gaap:ProceedsFromLifeInsurancePolicies


Proceeds
Period End2021-06-302021-03-312020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value541000.0968000.000000000384000.00135000.001000.0461000.00315000.0591000.00219000.0225000.00
Percentage of ProceedsFromLifeInsurancePolicies100.0100.00.00.00.00.00.00.00.00.0100.00.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value22535112731437032105813687299586121397345621044119561076510473917710998372591112521061163118675196321455216182218142129309148150149343249
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.3871200.244129.70641129.19636230.2921173.9911792.614145355990.88163151491.8771038.127951.0641091.158421.333.8381.598.1331.3340.2770.1740.3150.2010.1630.1450.1560.1670.1880.1630.19
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecurities


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.00.051111110424494423469442967294879052984296974682470.0580779800.01060796144970.0223849936492.0280.015581.474399744986000.0600299850.0390.84555470.00.029996998
Percentage of ProceedsFromSaleOfAvailableForSaleSecurities0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.0

us-gaap:ProceedsFromSaleOfForeclosedAssets

us-gaap:ProceedsFromSaleOfForeclosedAssets


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.00.10.00.0650.00.0080.5320.1260.0050.02.260.120.6790.3070.00.1720.00.3450.0440.00.240.0570.5650.171.0462.9012.8695.0021.6911.7191.8372.2821.9392.1425.1011.1855.0084.5226.7372.9495.2773.5991.8092.3275.6089.961
Percentage of ProceedsFromSaleOfForeclosedAssets0.0100.00.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.4330.0032.9340.03.0530.0010.0193.3420.014.6670.7690.0151.527112.9720.0030.0061.544570.0010.0031.5132.4640.0640.010.00.0140.0070.0130.0152.1690.0113.751121.320.1523.3990.2140.0830.1250.1430.9880.1580.1780.150.577
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.285295.0132.6983.3831.4637.2645.6652.9564.8855.081.1196.28319221.274192430443.490.0963.0232.888.2220.7283.5855.4642.83173.6273013200.4242.8811.6695.5420.1990.01.475.769105.3587.30715
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanAndLeaseLosses us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ProvisionForLoanAndLeaseLosses

cfr:CommercialandIndustrialTotalEnergyLoans


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value13-27.3421106.918.7882.446-3.756
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.0100.0100.0100.0100.0

cfr:Totalconsumerrealestateloans


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.7940.3521.57-0.392-0.650.2621.247
Percentage of ProvisionForLoanAndLeaseLosses13.0-1.31.4-5.7-7.410.7-33.2

us-gaap:CommercialPortfolioSegment


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-18.5477.334213.145-3.5271.597110.9471.0853.5285.794164.0968.184-4.6037.8664.6326.463.223-11.0034.1935.6946.371-7.4522.224-0.2485.96
Percentage of ProvisionForLoanAndLeaseLosses-134.3-26.820.045.5-40.165.3-317.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommercialRealEstatePortfolioSegment


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value254434-3.962-0.607-0.013-2.352-0.4540.250.847.443-7.0974.805-1.473.7510.9791.8862.993-0.794-1.7120.746-2.4640.2480.7644.651.1510.008
Percentage of ProvisionForLoanAndLeaseLosses183.6-163.131.6-57.3-6.9-0.562.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsumerLoan


Provision
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.1612.2974.6382.6543.9972.1083.935
Percentage of ProvisionForLoanAndLeaseLosses8.4-8.44.238.445.586.2-104.8

us-gaap:LoansReceivable


Provision
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value23271728.0016.411
Percentage of ProvisionForLoanAndLeaseLosses170.8-99.6157.291.0261.7-292.9

us-gaap:ProvisionForLoanLeaseAndOtherLosses

us-gaap:ProvisionForLoanLeaseAndOtherLosses


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.0631320311758.3558.0016.411
Percentage of ProvisionForLoanLeaseAndOtherLosses0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses us-gaap:StatementBusinessSegments

cfr:Bank


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.00.06331175
Percentage of ProvisionForLoanLeaseAndOtherLosses0.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ProvisionForLoanLossesExpensed

cfr:CommercialandIndustrialTotalEnergyLoans


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value-5.527-5.801-27.342110
Percentage of ProvisionForLoanLossesExpensed100.0100.0100.0100.0

cfr:Totalconsumerrealestateloans


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.611-2.7220.3521.57
Percentage of ProvisionForLoanLossesExpensed-11.146.9-1.31.4

us-gaap:CommercialPortfolioSegment


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value-5.901-1.9657.33421
Percentage of ProvisionForLoanLossesExpensed106.833.9-26.820.0

us-gaap:CommercialRealEstatePortfolioSegment


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value3.6548.9224434
Percentage of ProvisionForLoanLossesExpensed-66.1-153.8-163.131.6

us-gaap:ConsumerLoan


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.7841.5662.2974.638
Percentage of ProvisionForLoanLossesExpensed-50.4-27.0-8.44.2

us-gaap:LoansReceivable


Provision
Period End2021-06-302020-06-302020-03-31
Value-4.37927172
Percentage of ProvisionForLoanLossesExpensed79.2-99.6157.2

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:OtherComprehensiveIncomeLocation

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-1.208-1.208-1.05-1.05-1.051-1.051-1.11-1.111-1.11-1.111-0.988-0.988-0.988-0.987-0.882-0.882-0.883-0.882-4.6070.0-0.1210.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1.208-1.208-1.05-1.05-1.05185-1.089-1.035-0.976-1.111-1.022-1.015-1.035-1.002
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0-8092.398.193.287.9100.0103.4102.7104.8101.5

us-gaap:AvailableforsaleSecurities


Reclassification
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.00.00.0860.0210.0760.1340.0-0.034-0.027-0.047-0.015-0.016-3.164-0.0320.00.071-0.0250.09.687-0.069-0.0340.00.1480.0020.0210.0020.00.766-0.0090.0040.0032.8040.079
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax-0.0-0.0-0.0-8192.3-1.9-6.8-12.1-0.03.42.74.81.51.8358.73.6-0.0-1.50.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.2261.3260.0-0.3958.7879.8923.744201241700.00.0
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

cfr:NonVestedStockAwardsOutstanding


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-2.8991.570.870.910.688.69
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:Range, us-gaap:AwardType

srt:Maximum, us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value092.2700081.33
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue-0.0100.80.00.00.091.7

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:Range, us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

srt:Maximum, us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value092.2700
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue0.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312015-06-302015-03-31
Value0.7261.41-0.421.4650.74
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0065.11-0.280.510.5269.670.130.31.8867.47
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.285295.0132.6983.3831.4637.2645.6652.9564.8855.081.1196.28319221.273192430443.490.0963.0232.888.2220.7283.5855.4642.83173.6273013200.4242.8811.6695.5420.1990.01.475.769105.3587.30715
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-4.225-21.342-15.587-2.502-4.142-4.983-6.757-3.851-1.717-4.001-3.766-0.575-3.451-8.861-8.28-0.393
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised-58.0-72.6-310.9-92.7-122.4-340.6-93.0-68.0-58.1-81.9-74.1-51.4-54.9-46.2-37.1-30.9

us-gaap:TreasuryStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1150205.27.5256.446149.5164.6738.8868.8461.6949.73428331.088
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised158.0172.6410.9192.7222.4440.6193.0168.0158.1181.9174.1151.4154.9146.2148.485.5

us-gaap:StockIssuedDuringPeriodValueTreasuryStockReissued

us-gaap:StockIssuedDuringPeriodValueTreasuryStockReissued


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.01.7493.3464.1312.83
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued0.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueTreasuryStockReissued us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.0-0.057-0.819-1.602-0.961
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued0.0-3.3-24.5-38.8-34.0

us-gaap:TreasuryStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.01.8064.1655.7333.791
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued0.0103.3124.5138.8134.0

us-gaap:StockRedeemedOrCalledDuringPeriodShares

us-gaap:StockRedeemedOrCalledDuringPeriodShares


Stock
Period End2020-09-302020-06-302020-03-162020-03-312019-03-31
Value006000000.06000000.00
Percentage of StockRedeemedOrCalledDuringPeriodShares0.00.0100.0100.00.0

us-gaap:StockRedeemedOrCalledDuringPeriodValue

us-gaap:StockRedeemedOrCalledDuringPeriodValue


Stock
Period End2020-12-312020-09-302020-06-302020-03-162020-03-31
Value0.03000.0150-150.0
Percentage of StockRedeemedOrCalledDuringPeriodValue0.0100.00.0100.0100.0

us-gaap:StockRedeemedOrCalledDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:PreferredStock


Stock
Period End2020-12-312020-09-302020-06-302020-03-162020-03-31
Value0.02880.0144-144.486
Percentage of StockRedeemedOrCalledDuringPeriodValue0.096.30.096.396.3

us-gaap:RetainedEarnings


Stock
Period End2020-12-312020-09-302020-06-302020-03-162020-03-31
Value0.0110.05.5-5.514
Percentage of StockRedeemedOrCalledDuringPeriodValue0.03.70.03.73.7

us-gaap:TradingSecuritiesRealizedGain

us-gaap:TradingSecuritiesRealizedGain


Trading
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value293000.0109000.0169000.0159000.0304000.0470000.0384000.0731000.0552000.0506000.0412000.0465000.0434000.0505000.0390000.0414000.0293000.0311000.0204000.0379000.0351000.0302000.0274000.0277000.0278000.0280000.0169000.0167000.0253000.0240000.0194000.0108000.0282000.0294000.0287000.0310000.0299000.0323000.0835000.0303000.0161000.0308000.0299000.0509000.0398000.0
Percentage of TradingSecuritiesRealizedGain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TradingSecuritiesRealizedGainLoss

us-gaap:TradingSecuritiesRealizedGainLoss


Trading
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value293000.040000.0160000.0160000.0282000.0585000.0378000.0530000.0579000.0510000.0538000.0457000.0457000.0469000.0398000.0406000.0237000.0324000.048000.0379000.0349000.0303000.0261000.0283000.0246000.0266000.0159000.0180000.0253000.0237000.0174000.079000.0-95000.0291000.0183000.0332000.0280000.0263000.0809000.0307000.0168000.0308000.0301000.0529000.0469000.0
Percentage of TradingSecuritiesRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TransferToOtherRealEstate

us-gaap:TransferToOtherRealEstate


Transfer
Period End2020-09-302019-09-30
Value140000.0686000.0
Percentage of TransferToOtherRealEstate100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.01.2881.7850.0270.0131.08417500.5191000.00.070.01.4311000.00.0421.290.00.00.026641.4570.00.00.00.63280.01150.4360.3720.01.4560.2010.7930.00.00.193
Percentage of TreasuryStockValueAcquiredCostMethod0.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.00.00.00.0100.0100.0100.00.00.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.00.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value0.01.2881.7850.0270.0131.08417500.5191000.00.071.431100
Percentage of TreasuryStockValueAcquiredCostMethod0.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:UndistributedEarnings

us-gaap:UndistributedEarnings


Undistributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value69674249472.2665664647173726567615446484744353322403737384332283028262630292832272627242527
Percentage of UndistributedEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic


Undistributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1141000.01162000.0900000.0877000.0868000.0445000.0926000.0876000.0906000.0980000.0991000.0750000.0726000.0702000.0670000.0475000.0436000.0435000.0376000.0282000.0252000.0235000.0197000.0260000.0247000.0237000.0243000.0285000.0247000.0226000.0
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentPreTax

cfr:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentPreTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value3.03.23.53.84.14.44.82.711276093129165
Percentage of AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentPreTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:AdditionalTier1CapitalbeyondCommonEquityTier1 dei:LegalEntity

cfr:AdditionalTier1CapitalbeyondCommonEquityTier1

cfr:CullenFrost


Additional
Period End2021-06-302021-03-312020-12-312020-06-302019-12-31
Value1451451450.0144
Percentage of AdditionalTier1CapitalbeyondCommonEquityTier1100.0100.0100.00.0100.0

cfr:CECLTransitionAmount

cfr:CECLTransitionAmount


C
Period End2021-06-302021-03-312020-12-312020-09-30
Value626363-63.7
Percentage of CECLTransitionAmount100.0100.0100.0100.0

cfr:COVID19LoanDeferment

cfr:COVID19LoanDeferment


C
Period End2021-03-312020-12-312020-09-30
Value1145157
Percentage of COVID19LoanDeferment100.0100.0100.0

cfr:CapitalRequiredforCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn dei:LegalEntity

cfr:CapitalRequiredforCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn

cfr:CullenFrost


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value25012465249724812474251924262370233523052193215821352072205119891954191218771826182217951834179517921779
Percentage of CapitalRequiredforCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FrostBank


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value24962460249224762469251424222364232822992187215121292067204619831949190718711820181617891828178917861773
Percentage of CapitalRequiredforCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn99.899.899.899.899.899.899.899.899.799.799.799.799.899.899.899.799.799.799.799.799.799.799.799.799.799.7

cfr:CapitalRequiredforCapitalAdequacytoRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn dei:LegalEntity

cfr:CapitalRequiredforCapitalAdequacytoRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn

cfr:CullenFrost


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value10.510.510.510.50.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.105
Percentage of CapitalRequiredforCapitalAdequacytoRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FrostBank


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value10.510.510.510.50.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.1050.105
Percentage of CapitalRequiredforCapitalAdequacytoRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:CarryValueofSecuritiesPledged us-gaap:InformationByCategoryOfDebtSecurity

cfr:CarryValueofSecuritiesPledged

us-gaap:AvailableforsaleSecurities


Carry
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value4600430044003800320026003400
Percentage of CarryValueofSecuritiesPledged100.0100.0100.0100.0100.0100.0100.0

us-gaap:HeldtomaturitySecurities


Carry
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value530541659663557647561
Percentage of CarryValueofSecuritiesPledged11.512.615.017.517.424.916.5

cfr:CertificateOfDepositAccountRegistryServiceCdarsDeposits

cfr:CertificateOfDepositAccountRegistryServiceCdarsDeposits


Certificate
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value374000.0372000.0369000.0366000.0361000.0
Percentage of CertificateOfDepositAccountRegistryServiceCdarsDeposits100.0100.0100.0100.0100.0

cfr:CommonEquityTierOneCapitalRequiredForCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn dei:LegalEntity

cfr:CommonEquityTierOneCapitalRequiredForCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn

cfr:CullenFrost


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value16671643166416541649167916171580155615371462143914231381136713261303127512511217121511971222119711941186
Percentage of CommonEquityTierOneCapitalRequiredForCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FrostBank


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value16641640166116511646167616151576155215331458143414191378136413221299127112471213121111931218119211911182
Percentage of CommonEquityTierOneCapitalRequiredForCapitalAdequacyMinimumCapitalRequiredBaselIIIFullyPhasedIn99.899.899.899.899.899.899.899.899.799.799.799.799.899.899.899.799.799.799.799.799.799.799.799.799.799.7

cfr:CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn dei:LegalEntity

cfr:CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn

cfr:CullenFrost


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7.07.07.07.00.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.07
Percentage of CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FrostBank


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7.07.07.07.00.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.070.07
Percentage of CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssetsMinimumCapitalRequiredBaselIIIFullyPhasedIn100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:DebtSecuritiesHeldtoMaturityNetCarryingAmount

cfr:DebtSecuritiesHeldtoMaturityNetCarryingAmount


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1813182019451951196819842030
Percentage of DebtSecuritiesHeldtoMaturityNetCarryingAmount100.0100.0100.0100.0100.0100.0100.0

cfr:DebtSecuritiesHeldtoMaturityNetCarryingAmount us-gaap:FinancialInstrument

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value527528528529529530530
Percentage of DebtSecuritiesHeldtoMaturityNetCarryingAmount29.129.027.227.126.926.726.2

us-gaap:USStatesAndPoliticalSubdivisions


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1283129014151420143714521497
Percentage of DebtSecuritiesHeldtoMaturityNetCarryingAmount70.870.972.772.873.073.273.8

cfr:DeferredTaxLiabilitiesDefinedBenefitPostRetirementBenefitPlans

cfr:DeferredTaxLiabilitiesDefinedBenefitPostRetirementBenefitPlans


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value109.4199.4529.01214141514141513
Percentage of DeferredTaxLiabilitiesDefinedBenefitPostRetirementBenefitPlans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:DeferredTaxLiabilitiesNetUnrealizedGainOnSecuritiesAvailableForSaleAndtransferredSecurities

cfr:DeferredTaxLiabilitiesNetUnrealizedGainOnSecuritiesAvailableForSaleAndtransferredSecurities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value149830.0358.69986
Percentage of DeferredTaxLiabilitiesNetUnrealizedGainOnSecuritiesAvailableForSaleAndtransferredSecurities100.0100.00.0100.0100.0100.0

cfr:Deferredtaxassetleaseliabilitiesunderoperatingleases

cfr:Deferredtaxassetleaseliabilitiesunderoperatingleases


Deferredtaxassetleaseliabilitiesunderoperatingleases
Period End2020-12-312019-12-312018-12-31
Value67670.0
Percentage of Deferredtaxassetleaseliabilitiesunderoperatingleases100.0100.00.0

cfr:Deferredtaxassetsdeferredloanandleaseoriginationfees

cfr:Deferredtaxassetsdeferredloanandleaseoriginationfees


Deferredtaxassetsdeferredloanandleaseoriginationfees
Period End2020-12-312019-12-312018-12-312017-12-31
Value102.2542.1531.28
Percentage of Deferredtaxassetsdeferredloanandleaseoriginationfees100.0100.0100.0100.0

cfr:Deferredtaxliabilitiespartnershipinterest

cfr:Deferredtaxliabilitiespartnershipinterest


Deferredtaxliabilitiespartnershipinterest
Period End2020-12-312019-12-312018-12-31
Value2913000.02894000.00
Percentage of Deferredtaxliabilitiespartnershipinterest100.0100.00.0

cfr:Deferredtaxliabilityrightofuseassetsunderoperatingleases

cfr:Deferredtaxliabilityrightofuseassetsunderoperatingleases


Deferredtaxliabilityrightofuseassetsunderoperatingleases
Period End2020-12-312019-12-312018-12-31
Value61630.0
Percentage of Deferredtaxliabilityrightofuseassetsunderoperatingleases100.0100.00.0

cfr:DefinedBenefitPlanExpectedFutureBenefitPayments

cfr:DefinedBenefitPlanExpectedFutureBenefitPayments


Defined
Period End2020-12-31
Value115
Percentage of DefinedBenefitPlanExpectedFutureBenefitPayments100.0

cfr:DepositsPercentage

cfr:DepositsPercentage


Deposits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value100.0100.0100.0100.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.0
Percentage of DepositsPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:DerivativeAssetsNonmonetaryNotionalAmount us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk

cfr:DerivativeAssetsNonmonetaryNotionalAmount

cfr:CustomerCounterparties, cfr:NaturalGasCommodityDerivative


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value37171719124.3132.6893.5433.06610109.5885.6976.1333.9171.5460.9381.5551.2992.3133.3250.0
Percentage of DerivativeAssetsNonmonetaryNotionalAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

cfr:CustomerCounterparties, cfr:OilCommodityDerivative


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value108.9066.3913.1062.0540.5762.1720.731.2051.650.4152.8892.7612.6992.7311.0960.1780.4270.9440.5490.6270.045
Percentage of DerivativeAssetsNonmonetaryNotionalAmount27.649.936.215.616.713.480.820.639.315.54.130.148.544.069.770.919.027.572.723.718.90.0

cfr:FinancialInstitutionCounterparties, cfr:NaturalGasCommodityDerivative


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value152.4229.2815.623105.8078.2958.716104.0615.7457.9396.086.9635.9273.3511.0610.9760.00.00.00.76
Percentage of DerivativeAssetsNonmonetaryNotionalAmount41.913.652.628.284.7134.6308.5246.0332.638.156.182.8106.7113.5151.3216.8113.162.80.00.00.00.0

cfr:FinancialInstitutionCounterparties, cfr:OilCommodityDerivative


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4.4044.623.0562.2962.5122.6391.2142.281.7451.522.4160.6220.5850.4620.2530.9770.9350.6190.2270.8190.9121.184
Percentage of DerivativeAssetsNonmonetaryNotionalAmount11.925.917.311.520.461.245.164.456.914.323.66.510.37.56.563.299.739.817.535.427.40.0

cfr:DerivativeLiabilitiesNonmonetaryNotionalAmount us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk

cfr:DerivativeLiabilitiesNonmonetaryNotionalAmount

cfr:CustomerCounterparties, cfr:NaturalGasCommodityDerivative


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value152.4226.7243.8648.8915.8078.2958.613104.0314.8236.7345.9837.065.9273.3511.0610.9760.00.00.00.76
Percentage of DerivativeLiabilitiesNonmonetaryNotionalAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0

cfr:CustomerCounterparties, cfr:OilCommodityDerivative


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value4.3334.623.0562.2792.5122.6391.192.2771.6751.4162.4160.6220.5850.4260.2530.9630.9350.5940.2270.8190.9121.184
Percentage of DerivativeLiabilitiesNonmonetaryNotionalAmount27.8190.845.459.028.345.414.326.416.435.150.19.29.86.04.328.788.160.90.00.00.0155.8

cfr:FinancialInstitutionCounterparties, cfr:NaturalGasCommodityDerivative


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value37171518104.3132.6893.4393.066109.3148.3825.66.233.9171.5460.9381.5551.2992.3133.3250.0
Percentage of DerivativeLiabilitiesNonmonetaryNotionalAmount238.6737.3224.3470.5121.274.332.439.930.1263.7193.1124.593.688.266.146.188.4159.30.00.00.00.0

cfr:FinancialInstitutionCounterparties, cfr:OilCommodityDerivative


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value108.9066.3913.0892.0540.5762.1480.7271.1351.5460.4152.8892.7612.6632.7311.0820.1780.4020.9440.5490.6270.045
Percentage of DerivativeLiabilitiesNonmonetaryNotionalAmount65.5367.795.079.923.19.925.98.411.138.48.642.946.137.746.132.316.841.20.00.00.05.9

cfr:Employeeservicesharebasedcompensationnotyetrecognizedperformancestockunits

cfr:Employeeservicesharebasedcompensationnotyetrecognizedperformancestockunits


Employeeservicesharebasedcompensationnotyetrecognizedperformancestockunits
Period End2020-12-31
Value7034000.0
Percentage of Employeeservicesharebasedcompensationnotyetrecognizedperformancestockunits100.0

cfr:ExpectedDefinedBenefitPlansContributionWithinOneYear

cfr:ExpectedDefinedBenefitPlansContributionWithinOneYear


Expected
Period End2020-12-31
Value1200000.0
Percentage of ExpectedDefinedBenefitPlansContributionWithinOneYear100.0

cfr:FairValueHedgeLoanLeaseInterestRateSwaps us-gaap:DerivativeInstrumentRisk

cfr:FairValueHedgeLoanLeaseInterestRateSwaps

cfr:WeightedAverageInterestRatePaid


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2.973.143.273.390.03470.03540.02660.02330.02290.02350.0240.02450.02490.03270.03090.02320.02340.02410.0240.02270.0228
Percentage of FairValueHedgeLoanLeaseInterestRateSwaps100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:WeightedAverageInterestRateReceived


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.090.110.150.150.00180.01260.01750.02050.02410.02490.02460.02160.02050.01770.01470.01230.01170.00920.00710.00520.0045
Percentage of FairValueHedgeLoanLeaseInterestRateSwaps3.03.54.64.45.235.665.888.0105.2106.0102.588.282.354.147.653.050.038.229.622.919.7

cfr:FairValueOfForeclosedAssetsRemeasuredSubsequentToInitialRecognition

cfr:FairValueOfForeclosedAssetsRemeasuredSubsequentToInitialRecognition


Fair
Period End2020-12-312020-09-302020-06-302020-03-312018-12-31
Value97000.097000.097000.097000.01350000.0
Percentage of FairValueOfForeclosedAssetsRemeasuredSubsequentToInitialRecognition100.0100.0100.0100.0100.0

cfr:FinancialAssetsDerivativeAndResellAgreementsCollateralAmountNotOffset

cfr:FinancialAssetsDerivativeAndResellAgreementsCollateralAmountNotOffset


Financial
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value7.9037.9032031653114109.87733151212101711109.7069.642141416151617155.114.9386.0959.2585.2824.8984.8984.8988.052
Percentage of FinancialAssetsDerivativeAndResellAgreementsCollateralAmountNotOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FinancialAssetsDerivativeAssetsAndResellAgreementsNetOfAmountNotOffset

cfr:FinancialAssetsDerivativeAssetsAndResellAgreementsNetOfAmountNotOffset


Financial
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value6000.01665000.0305000.030000.02477000.0131000.0525000.055000.0212000.0225000.0228000.0115000.0229000.0389000.0110000.0169000.0000993000.0470000.0501000.01495000.03450000.0269000.0135000.0081000.00493000.03000.03000.0
Percentage of FinancialAssetsDerivativeAssetsAndResellAgreementsNetOfAmountNotOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0

cfr:FinancialAssetsDerivativesAndRepurchaseAgreementsNet

cfr:FinancialAssetsDerivativesAndRepurchaseAgreementsNet


Financial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value2223114054843626201739201717132117151311172327293037391713172417197.3227.14414
Percentage of FinancialAssetsDerivativesAndRepurchaseAgreementsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FinancialAssetsDerivativesAndResellAgreementsNet

cfr:FinancialAssetsDerivativesAndResellAgreementsNet


Financial
Period End2021-06-302021-03-312020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value222311843626201739201717132117151311172327293037391713172417197.3227.14414
Percentage of FinancialAssetsDerivativesAndResellAgreementsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FinancialAssetsGross

cfr:FinancialAssetsGross


Financial
Period End2021-06-302021-03-312020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value222311843626201739201717132117151311172327293037391713172417197.3227.14414
Percentage of FinancialAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FinancialInstrumentsAssetsDerivativesAndResellAgreementsNet

cfr:FinancialInstrumentsAssetsDerivativesAndResellAgreementsNet


Financial
Period End2020-09-302020-06-302019-12-31
Value405436
Percentage of FinancialInstrumentsAssetsDerivativesAndResellAgreementsNet100.0100.0100.0

cfr:FinancialInstrumentsAssetsGross

cfr:FinancialInstrumentsAssetsGross


Financial
Period End2020-09-302020-06-302019-12-31
Value405436
Percentage of FinancialInstrumentsAssetsGross100.0100.0100.0

cfr:FinancialInstrumentsDerivativeLiabilitiesAndRepurchaseAgreementsNetOfAmountNotOffset

cfr:FinancialInstrumentsDerivativeLiabilitiesAndRepurchaseAgreementsNetOfAmountNotOffset


Financial
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value1751000.01181000.02194000.018000.064000.0084000.079000.0285000.0421000.02267000.02019000.0793000.01299000.094000.0283000.0375000.01622000.02241000.02292000.02504000.0570000.01007000.01182000.01363000.01155000.0753000.02263000.0279000.0767000.03669000.04176000.05306000.03143000.01206000.0
Percentage of FinancialInstrumentsDerivativeLiabilitiesAndRepurchaseAgreementsNetOfAmountNotOffset100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FinancialInstrumentsLiabilitiesGross

cfr:FinancialInstrumentsLiabilitiesGross


Financial
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value21371626160011851694121313321231137111151006104311441004943904995853789742924670621649839615664561710632598577633718
Percentage of FinancialInstrumentsLiabilitiesGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FinancialLiabilitiesDerivativeAndRepurchaseAgreementsCollateralAmountNotOffset

cfr:FinancialLiabilitiesDerivativeAndRepurchaseAgreementsCollateralAmountNotOffset


Financial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value237819692125160315791165168912031321122313641108999103811391001937899990849783730912655605628817602653549695617580569628710
Percentage of FinancialLiabilitiesDerivativeAndRepurchaseAgreementsCollateralAmountNotOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FinancialLiabilitiesDerivativesAndRepurchaseAgreementsNet

cfr:FinancialLiabilitiesDerivativesAndRepurchaseAgreementsNet


Financial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value2394198521371626160011851694121313321231137111151006104311441004943904995853789742924670621649839615664561710632598577633718
Percentage of FinancialLiabilitiesDerivativesAndRepurchaseAgreementsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FinancialLiabilitiesGross

cfr:FinancialLiabilitiesGross


Financial
Period End2021-06-302021-03-312020-12-31
Value239419852137
Percentage of FinancialLiabilitiesGross100.0100.0100.0

cfr:ForeclosedAssetsRemeasuredSubsequenttoInitialRecognitionCarryingValueOfForeclosedAssetsPriorToRemeasurement

cfr:ForeclosedAssetsRemeasuredSubsequenttoInitialRecognitionCarryingValueOfForeclosedAssetsPriorToRemeasurement


Foreclosed
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value328000.0328000.0328000.0328000.000001823000.01823000.01823000.01823000.089000.089000.089000.089000.0492000.0492000.000205000.0205000.0205000.0138000.05026000.05002000.04299000.0499000.04979000.0
Percentage of ForeclosedAssetsRemeasuredSubsequenttoInitialRecognitionCarryingValueOfForeclosedAssetsPriorToRemeasurement100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:ForeclosedAssetsRemeasuredSubsequenttoinitialRecognitionWriteDownsIncludedInOtherNonInterestExpense

cfr:ForeclosedAssetsRemeasuredSubsequenttoinitialRecognitionWriteDownsIncludedInOtherNonInterestExpense


Foreclosed
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value231000.0231000.0231000.0231000.00000473000.0473000.0473000.0473000.016000.016000.016000.016000.0217000.0217000.00036000.036000.036000.022000.01289000.01277000.0994000.0244000.0895000.0
Percentage of ForeclosedAssetsRemeasuredSubsequenttoinitialRecognitionWriteDownsIncludedInOtherNonInterestExpense100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:ImpairedFinancingReceivableRelatedAllowanceReversal us-gaap:FairValueByFairValueHierarchyLevel

cfr:ImpairedFinancingReceivableRelatedAllowanceReversal

us-gaap:FairValueInputsLevel3


Impaired
Period End2020-09-30
Value14
Percentage of ImpairedFinancingReceivableRelatedAllowanceReversal100.0

cfr:ImpairedFinancingReceivableReversalofSpecificValuationAllowanceAllocations us-gaap:FairValueByFairValueHierarchyLevel

cfr:ImpairedFinancingReceivableReversalofSpecificValuationAllowanceAllocations

us-gaap:FairValueInputsLevel2


Impaired
Period End2021-06-302020-06-302020-03-31
Value-336000.0-731000.070000.0
Percentage of ImpairedFinancingReceivableReversalofSpecificValuationAllowanceAllocations100.0100.0100.0

us-gaap:FairValueInputsLevel3


Impaired
Period End2021-06-302021-03-312018-12-31
Value-3273000.0600000.09260000.0
Percentage of ImpairedFinancingReceivableReversalofSpecificValuationAllowanceAllocations974.10.00.0

cfr:InvestmentInSubsidiaries us-gaap:ConsolidatedEntities

cfr:InvestmentInSubsidiaries

srt:ParentCompany


Investment
Period End2020-12-312019-12-312018-12-312017-12-31
Value4155389633623274
Percentage of InvestmentInSubsidiaries100.0100.0100.0100.0

cfr:NonHedgingInterestRateSwaps us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk

cfr:NonHedgingInterestRateSwaps

cfr:FinancialInstitutionCounterparties, cfr:WeightedAverageInterestRatePaid


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value3.823.813.974.00.04030.04050.04120.04170.04190.04180.04130.04090.04090.03960.03930.03960.03990.03990.03970.040.0403
Percentage of NonHedgingInterestRateSwaps100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:FinancialInstitutionCounterparties, cfr:WeightedAverageInterestRateReceived


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1.821.851.951.930.02090.02930.03450.03710.04030.04110.04020.03730.03670.03280.02970.02840.02770.02570.02390.02270.022
Percentage of NonHedgingInterestRateSwaps47.648.649.148.251.972.383.789.096.298.397.391.289.782.875.671.769.464.460.256.854.6

cfr:NonHedgingInterestRateSwaps2 us-gaap:CounterpartyName, us-gaap:DerivativeInstrumentRisk

cfr:NonHedgingInterestRateSwaps2

cfr:CustomerCounterparties, cfr:WeightedAverageInterestRatePaid


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1.821.851.951.930.02090.02930.03450.03710.04030.04110.04020.03730.03670.03350.02970.02840.02770.02570.02390.02270.022
Percentage of NonHedgingInterestRateSwaps2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:CustomerCounterparties, cfr:WeightedAverageInterestRateReceived


Non
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value3.823.813.974.00.04030.04050.04120.04170.04190.04180.04130.04090.04090.04060.03930.03960.03990.03990.03970.040.0403
Percentage of NonHedgingInterestRateSwaps2209.9205.9203.6207.3192.8138.2119.4112.4104.0101.7102.7109.7111.4121.2132.3139.4144.0155.3166.1176.2183.2

cfr:OtherComprehensiveIncomeNetActuarialGainLossExpectedToBeRecognized

cfr:OtherComprehensiveIncomeNetActuarialGainLossExpectedToBeRecognized


Other
Period End2020-12-31
Value6100000.0
Percentage of OtherComprehensiveIncomeNetActuarialGainLossExpectedToBeRecognized100.0

cfr:PercentMunicipalBondPortfolioIssuedByPoliticalSubdivisionOrAgenciesWithinStateOfTexasGuaranteedByTexasPermanentSchoolFundOrHaveBeenPreRefunded

cfr:PercentMunicipalBondPortfolioIssuedByPoliticalSubdivisionOrAgenciesWithinStateOfTexasGuaranteedByTexasPermanentSchoolFundOrHaveBeenPreRefunded


Percent
Period End2021-06-302021-03-312020-12-312020-09-30
Value74.177.577.875.8
Percentage of PercentMunicipalBondPortfolioIssuedByPoliticalSubdivisionOrAgenciesWithinStateOfTexasGuaranteedByTexasPermanentSchoolFundOrHaveBeenPreRefunded100.0100.0100.0100.0

cfr:PercentageOfCommercialAndIndustrialLoansToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfCommercialAndIndustrialLoansToLoans

us-gaap:CommercialPortfolioSegment


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value28.726.728.426.40.2790.3610.352
Percentage of PercentageOfCommercialAndIndustrialLoansToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfCommercialRealEstateConstructionLoansToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfCommercialRealEstateConstructionLoansToLoans

us-gaap:ConstructionLoans


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value7.06.97.07.00.070.0830.089
Percentage of PercentageOfCommercialRealEstateConstructionLoansToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfCommercialRealEstateLandLoansToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfCommercialRealEstateLandLoansToLoans

cfr:Commerciallandloan


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1.91.71.81.80.0180.0190.02
Percentage of PercentageOfCommercialRealEstateLandLoansToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfCommercialRealEstateLoanToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfCommercialRealEstateLoanToLoans

us-gaap:CommercialRealEstatePortfolioSegment


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value42.539.740.138.50.3690.4230.42
Percentage of PercentageOfCommercialRealEstateLoanToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfCommercialRealEstateMortgageLoansToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfCommercialRealEstateMortgageLoansToLoans

cfr:Commercialmortgage


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value33.631.131.329.70.2810.3210.311
Percentage of PercentageOfCommercialRealEstateMortgageLoansToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfConsumerHomeEquityLoansToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfConsumerHomeEquityLoansToLoans

us-gaap:HomeEquityLoan


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1.91.81.91.90.0190.0250.026
Percentage of PercentageOfConsumerHomeEquityLoansToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfConsumerRealEstateHomeEquityLinesOfCreditToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfConsumerRealEstateHomeEquityLinesOfCreditToLoans

us-gaap:HomeEquity


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value2.92.52.62.40.0220.0230.024
Percentage of PercentageOfConsumerRealEstateHomeEquityLinesOfCreditToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfLoansAndLeasesReceivableConsumerOtherToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfLoansAndLeasesReceivableConsumerOtherToLoans

us-gaap:ConsumerLoan


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value2.92.62.92.80.0280.0350.035
Percentage of PercentageOfLoansAndLeasesReceivableConsumerOtherToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfLoansAndLeasesReceivableConsumerRealEstateToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfLoansAndLeasesReceivableConsumerRealEstateToLoans

cfr:Totalconsumerrealestateloans


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value8.17.37.67.20.0690.0790.081
Percentage of PercentageOfLoansAndLeasesReceivableConsumerRealEstateToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfLoansToLoans

cfr:PercentageOfLoansToLoans


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value100.0100.0100.0100.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.0
Percentage of PercentageOfLoansToLoans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfNonInterestBearingDemandDepositsToDeposits

cfr:PercentageOfNonInterestBearingDemandDepositsToDeposits


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-03-31
Value42.543.643.244.30.4490.3980.3930.3970.390.3850.4050.4110.4050.410.4170.4230.4180.4170.4080.4090.4030.3990.4220.430.4260.4150.420.4330.4220.4090.4020.4060.4060.4030.4150.401
Percentage of PercentageOfNonInterestBearingDemandDepositsToDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfNonInterestBearingDemandDepositsToDeposits us-gaap:BalanceSheetLocation

cfr:CommercialAndIndividual


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value39.940.639.741.40.4240.3740.3690.3720.3710.3660.3790.3840.3840.3860.3880.3960.3930.3910.3750.3750.3680.3640.380.390.383
Percentage of PercentageOfNonInterestBearingDemandDepositsToDeposits93.993.191.993.594.494.093.993.795.195.193.693.494.894.193.093.694.093.891.991.791.391.290.090.791.2

cfr:CorrespondentBanks


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value0.50.60.70.60.0090.0080.0090.010.0070.0070.0090.0070.0080.0080.0080.0090.010.010.0110.0130.0120.0130.0160.0140.018
Percentage of PercentageOfNonInterestBearingDemandDepositsToDeposits1.21.41.61.42.02.02.32.51.81.82.21.72.02.01.92.12.42.42.73.23.03.33.83.34.3

cfr:PublicFunds


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value2.12.42.82.30.0160.0160.0150.0150.0120.0120.0170.020.0130.0160.0210.0180.0150.0160.0220.0210.0230.0220.0260.0260.019
Percentage of PercentageOfNonInterestBearingDemandDepositsToDeposits4.95.56.55.23.64.03.83.83.13.14.24.93.23.95.04.33.63.85.45.15.75.56.26.04.5

cfr:PercentageOfOtherConsumerRealEstateLoansToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfOtherConsumerRealEstateLoansToLoans

cfr:Otherconsumerrealestateloans


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value3.33.03.12.90.0280.0310.031
Percentage of PercentageOfOtherConsumerRealEstateLoansToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfPaycheckProtectionProgramLoansToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfPaycheckProtectionProgramLoansToLoans

cfr:PaycheckProtectionProgram


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value11.617.513.917.70.1760
Percentage of PercentageOfPaycheckProtectionProgramLoansToLoans100.0100.0100.0100.0100.00.0

cfr:PercentageOfRealEstateLoansToLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfRealEstateLoansToLoans

us-gaap:RealEstateLoan


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value50.647.047.745.70.4380.5020.501
Percentage of PercentageOfRealEstateLoansToLoans100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfTimeAccountsOf100000OrMoreToDeposits us-gaap:BalanceSheetLocation

cfr:PercentageOfTimeAccountsOf100000OrMoreToDeposits

cfr:PrivateAccounts


Percentage
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value2.40.0240.0280.0270.0260.0260.0230.020.0180.0180.0170.0170.0170.0170.0170.0180.0180.0170.0170.017
Percentage of PercentageOfTimeAccountsOf100000OrMoreToDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfTimeAccountsToDeposits us-gaap:BalanceSheetLocation

cfr:PercentageOfTimeAccountsToDeposits

cfr:PrivateAccounts


Percentage
Period End2021-06-302021-03-312020-12-31
Value2.93.13.3
Percentage of PercentageOfTimeAccountsToDeposits100.0100.0100.0

cfr:PercentageOfTimeAccountsUnder100000ToDeposits us-gaap:BalanceSheetLocation

cfr:PercentageOfTimeAccountsUnder100000ToDeposits

cfr:PrivateAccounts


Percentage
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value1.00.010.0120.0120.0130.0130.0130.0120.0130.0120.0120.0120.0130.0130.0130.0130.0140.0160.0170.0170.0170.019
Percentage of PercentageOfTimeAccountsUnder100000ToDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:PercentageOfTotalEnergyLoansToTotalLoansExcludingPPPLoans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:PercentageOfTotalEnergyLoansToTotalLoansExcludingPPPLoans

cfr:CommercialandIndustrialTotalEnergyLoans


Percentage
Period End2021-06-302021-03-312020-12-312020-09-30
Value7.07.58.29.1
Percentage of PercentageOfTotalEnergyLoansToTotalLoansExcludingPPPLoans100.0100.0100.0100.0

cfr:Percentageofenergyproductionloanstototalloans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:Percentageofenergyproductionloanstototalloans

cfr:EnergyProduction


Percentageofenergyproductionloanstototalloansus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value4.95.05.66.10.0650.0830.0920.0870.0830.0890.0930.0880.0880.0840.090.0860.0830.080.0810.0830.0910.1020.109
Percentage of Percentageofenergyproductionloanstototalloans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:Percentageofenergyserviceloanstototalloans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:Percentageofenergyserviceloanstototalloans

us-gaap:EnergyService


Percentageofenergyserviceloanstototalloansus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.60.50.70.90.0090.0120.0130.0130.0120.0120.012
Percentage of Percentageofenergyserviceloanstototalloans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:Percentageofotherenergyloanstototalloans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:Percentageofotherenergyloanstototalloans

cfr:EnergyOther


Percentageofotherenergyloanstototalloansus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value0.70.70.80.40.0050.0070.0080.0050.0070.0070.0090.010.0110.0090.0110.010.0150.0150.0170.0180.0190.020.02
Percentage of Percentageofotherenergyloanstototalloans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cfr:Percentageoftotalenergyloanstototalloans us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cfr:Percentageoftotalenergyloanstototalloans

cfr:CommercialandIndustrialTotalEnergyLoans


Percentageoftotalenergyloanstototalloansus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value6.26.27.17.40.0790.1020.112
Percentage of Percentageoftotalenergyloanstototalloans100.0100.0100.0100.0100.0100.0100.0

cfr:PreferredStockValueIssuedIncludeForRegulatoryTierOneCapitalCalculations dei:LegalEntity

cfr:PreferredStockValueIssuedIncludeForRegulatoryTierOneCapitalCalculations

cfr:CullenFrost


Preferred
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1450.0144144144144144144
Percentage of PreferredStockValueIssuedIncludeForRegulatoryTierOneCapitalCalculations100.00.0100.0100.0100.0100.0100.0100.0

cfr:PreviouslyRestructuredLoansPastDue

cfr:PreviouslyRestructuredLoansPastDue


Previously
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value1.3221.3922.0083.6820.01.7333.343.2440.02.3670.00.00.00.043430.00.7473.230.259
Percentage of PreviouslyRestructuredLoansPastDue100.0100.0100.0100.00.0100.0100.0100.00.0100.00.00.00.00.0100.0100.00.0100.0100.0100.0

cfr:Remainingcontractualmaturityoftheagreementsovernightandcontinuous

cfr:Remainingcontractualmaturityoftheagreementsovernightandcontinuous


Remainingcontractualmaturityoftheagreementsovernightandcontinuous
Period End2021-06-302021-03-312020-12-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-31
Value221618842068114612101015879682581
Percentage of Remainingcontractualmaturityoftheagreementsovernightandcontinuous100.0100.0100.0100.0100.0100.0100.0100.0100.0