ZION


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

Table of contents


us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:CommonStockParOrStatedValuePerShare

us-gaap:SharesIssued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets

us-gaap:CapitalToRiskWeightedAssets

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:GainLossOnInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestAndFeeIncomeLoansAndLeases
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestExpense

us-gaap:InterestExpenseDebt

us-gaap:InterestIncomeExpenseNet
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService

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

us-gaap:RevenuesNetOfInterestExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:TierOneRiskBasedCapital

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:Land

us-gaap:LeaseholdImprovementsGross

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssets

us-gaap:TimeDepositMaturitiesYearOne

us-gaap:LongTermDebt
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividends

us-gaap:Dividends

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

us-gaap:AdvertisingExpense

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskPercentage1
us-gaap:ProductOrService, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:DebtAndEquitySecuritiesGainLoss

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1

us-gaap:DepreciationAndAmortization

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DistributedEarnings

us-gaap:DividendsCommonStock
us-gaap:StatementEquityComponents

us-gaap:DividendsPreferredStock
us-gaap:StatementEquityComponents

us-gaap:EquipmentExpense
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueOptionChangesInFairValueGainLoss1
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FederalDepositInsuranceCorporationPremiumExpense

us-gaap:FinancingReceivableAccruedInterestWriteoff
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:GainLossOnSaleOfNotesReceivable

us-gaap:GainsLossesOnSalesOfOtherRealEstate
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:FinancialInstrument

us-gaap:IncreaseDecreaseInDeposits
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:IncreaseDecreaseInDerivativeAssets
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:IncreaseDecreaseInDerivativeLiabilities
us-gaap:DerivativeInstrumentRisk
us-gaap:IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1
us-gaap:DerivativeInstrumentRisk
us-gaap:IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments1

us-gaap:IncreaseDecreaseInLoansHeldForSale

us-gaap:IncreaseDecreaseInOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInTradingSecurities

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestExpenseDeposits

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestIncomeMoneyMarketDeposits

us-gaap:InvestmentIncomeInterest
us-gaap:InvestmentType
us-gaap:InvestmentType, zions:TaxableVSNontaxableIncome
zions:TaxableVSNontaxableIncome

us-gaap:InvestmentIncomeNonoperating

us-gaap:LaborAndRelatedExpense

us-gaap:LeaseCost

us-gaap:NoninterestExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NoninterestIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:NoninterestIncomeOtherOperatingIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OccupancyNet

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoninterestExpense

us-gaap:OtherPreferredStockDividendsAndAdjustments

us-gaap:PaymentsForOriginationAndPurchasesOfLoansHeldForSale

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherLoansAndLeases

us-gaap:PaymentsForProceedsFromShortTermInvestments

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireHeldToMaturitySecurities
us-gaap:StatementClassOfStock
us-gaap:PreferredStockDividendRatePercentage

us-gaap:PreferredStockRedemptionPremium

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSaleOfLoansHeldForSale

us-gaap:ProfessionalFees

us-gaap:ProvisionForLoanLossesExpensed
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:RevenueNotFromContractWithCustomerExcludingInterestIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:SaleOfStockConsiderationReceivedOnTransaction

us-gaap:SalesTypeAndDirectFinancingLeasesProfitLoss
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:StockRedeemedOrCalledDuringPeriodValue
us-gaap:StatementClassOfStock
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:TransferToOtherRealEstate

us-gaap:UndistributedEarnings

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersDiluted
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:UnrealizedGainLossOnInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:SubsequentEventType

us-gaap:VariableLeaseCost

zions:AmortizationOfGainLossOnTerminatedHedgesIntoEarnings

zions:AverageDeposits
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

zions:AverageLoansAndLeases
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

zions:CapitalMarketsAndForeignExchangeGainLoss

zions:CardFees

zions:CommercialAccountFees

zions:CreditAndCollectionServices
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
zions:DerivativeInstrumentNoninterestIncomeExpense
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation

zions:DilutiveEffectofCommonStockWarrants

zions:DilutiveEffectofStockOptions
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
zions:FairValueAssetsMeasuredOnRecurringBasisAndGainLossIncludedInEquitySecuritiesGainsLossesNet
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
zions:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOther
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
zions:FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetNoninterestIncome

zions:FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

zions:LoanRelatedFeesAndIncome
us-gaap:StatementEquityComponents
zions:NetSharesIssuedFromStockWarrantExercises

zions:Netchangeinothernoninterestbearinginvestments

zions:NoninterestincomeCustomerrelatedFees

zions:OCIOtherNonInterestBearingInvestmentsUnrealizedGainLossAfterTax

zions:OtherCustomerRelatedFees

zions:OtherNoninterestBearingInvestmentsNonmarketableEquitySecuritiesGrossGains

zions:OtherNoninterestBearingInvestmentsNonmarketableEquitySecuritiesGrossLosses

zions:RetailAndBusinessBankingFees

zions:StockholdersEquityChangeInDeferredCompensation
us-gaap:StatementEquityComponents

zions:TransferOfPortfolioLoansAndLeasesToHeldForSaleAndTransferOfLoansHeldForSaleToPortfolioLoansNet

zions:UndistributedEarningsApplicabletoNonvestedShares

zions:WealthManagementAndTrustFees

zions:WealthManagementFees
us-gaap:RetirementPlanType
us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AdvancesFromFederalHomeLoanBanks

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:AssetsHeldInTrust

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost
us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost
us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis
us-gaap:FinancialInstrument
us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost
us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FinancialInstrument

us-gaap:BankingRegulationCapitalConservationBufferCommonEquityTierOneRiskBasedCapitalActual

us-gaap:BankingRegulationCapitalConservationBufferTierOneRiskBasedCapitalActual

us-gaap:BankingRegulationCapitalConservationBufferTotalRiskBasedCapitalActual

us-gaap:BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioCapitalAdequacyMinimum

us-gaap:Capital

us-gaap:CapitalRequiredForCapitalAdequacyToRiskWeightedAssets

us-gaap:CapitalRequiredToBeWellCapitalized

us-gaap:CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets

us-gaap:CapitalizedComputerSoftwareGross

us-gaap:CashAndDueFromBanks

us-gaap:CommonEquityTierOneCapital

us-gaap:CommonEquityTierOneCapitalRatio

us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized

us-gaap:CommonStockHeldInTrust

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreAfter12Months

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreSixMonthsThrough12Months

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsOrLess

us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreThreeMonthsThroughSixMonths

us-gaap:CustomerSecuritiesForWhichEntityHasRightToSellOrRepledgeFairValue
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleExcludingAccruedInterest
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleMaturityAfter10YearsWeightedAverageYield
us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:DebtSecuritiesAvailableForSaleMaturityAfterFiveThroughTenYearsWeightedAverageYield
us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:DebtSecuritiesAvailableForSaleMaturityAfterOneThroughFiveYearsWeightedAverageYield
us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:DebtSecuritiesAvailableForSaleMaturityWithinOneYearWeightedAverageYield
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions

us-gaap:DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest

us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss
us-gaap:InternalCreditAssessment

us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
us-gaap:InternalCreditAssessment
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:DebtSecuritiesHeldToMaturityMaturityAfter10YearsWeightedAverageYield
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:DebtSecuritiesHeldToMaturityMaturityAfterFiveThroughTenYearsWeightedAverageYield
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:DebtSecuritiesHeldToMaturityMaturityAfterOneThroughFiveYearsWeightedAverageYield
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:DebtSecuritiesHeldToMaturityMaturityWithinOneYearWeightedAverageYield

us-gaap:DebtSecuritiesHeldToMaturityOriginatedFiveOrMoreYearsBeforeLatestFiscalYear

us-gaap:DebtSecuritiesHeldToMaturityOriginatedFourYearsBeforeLatestFiscalYear

us-gaap:DebtSecuritiesHeldToMaturityOriginatedInCurrentFiscalYear

us-gaap:DebtSecuritiesHeldToMaturityOriginatedInFiscalYearBeforeLatestFiscalYear

us-gaap:DebtSecuritiesHeldToMaturityOriginatedThreeYearsBeforeLatestFiscalYear

us-gaap:DebtSecuritiesHeldToMaturityOriginatedTwoYearsBeforeLatestFiscalYear

us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses

us-gaap:DeferredTaxLiabilitiesFinancingArrangements

us-gaap:DeferredTaxLiabilitiesInvestments

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesMortgageServicingRights

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DepositLiabilitiesReclassifiedAsLoansReceivable1

us-gaap:Deposits

us-gaap:DepositsSavingsDeposits

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowed

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedAmountOffsetAgainstCollateral

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnCash

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedCollateralObligationToReturnSecurities

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedGross

us-gaap:DerivativeAssetSecuritiesPurchasedUnderAgreementsToResellSecuritiesBorrowedLiability

us-gaap:DerivativeAssets

us-gaap:DerivativeCollateralObligationToReturnCash

us-gaap:DerivativeCollateralObligationToReturnSecurities

us-gaap:DerivativeCollateralRightToReclaimCash

us-gaap:DerivativeCollateralRightToReclaimSecurities

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral

us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:HedgingDesignation

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral

us-gaap:DerivativeLiabilities

us-gaap:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoaned

us-gaap:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral

us-gaap:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset

us-gaap:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash

us-gaap:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimSecurities

us-gaap:DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross

us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EquityMethodInvestmentsFairValueDisclosure

us-gaap:ExcessCapitalToRiskWeightedAssets

us-gaap:ExcessTierOneRiskBasedCapitalToRiskWeightedAssets
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

us-gaap:FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:FederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell

us-gaap:FederalHomeLoanBankStockAndFederalReserveBankStock

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinancialInstrumentsSoldNotYetPurchasedAtFairValue
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableBeforeAllowanceForCreditLossAndFee

us-gaap:FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss

us-gaap:FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss

us-gaap:FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestRevolving
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableIndividuallyEvaluatedForImpairment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableNonaccrualNoAllowance
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentCurrent
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus

us-gaap:FinancingReceivableRecordedInvestmentPastDue

us-gaap:FinancingReceivableRevolving
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableRevolvingConvertedToTermLoan
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FixturesAndEquipmentGross
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:HedgedAssetFairValueHedge
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:HedgedAssetFairValueHedgeCumulativeIncreaseDecrease
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:HedgedLiabilityFairValueHedge
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:HedgedLiabilityFairValueHedgeCumulativeIncreaseDecrease

us-gaap:HeldToMaturitySecurities
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount
us-gaap:FinancialInstrument
us-gaap:HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount

us-gaap:HeldToMaturitySecuritiesFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions

us-gaap:InterestBearingDepositsInBanks

us-gaap:InterestReceivable
us-gaap:InvestmentType

us-gaap:InvestmentBuildingAndBuildingImprovements

us-gaap:InvestmentsFairValueDisclosure

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroup

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:Range
us-gaap:LossContingencyEstimateOfPossibleLoss

us-gaap:MarketableSecurities

us-gaap:MortgageLoansInProcessOfForeclosureAmount

us-gaap:NoninterestBearingDepositLiabilities

us-gaap:NotesReceivableGross

us-gaap:NotesReceivableNet

us-gaap:OffBalanceSheetCreditLossLiability
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:OtherAssetsFairValueDisclosure
us-gaap:DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensation, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:HedgingDesignation
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:HedgingDesignation

us-gaap:OtherInvestments

us-gaap:OtherLiabilities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:OtherLiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:HedgingDesignation
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:HedgingDesignation
us-gaap:FinancialInstrument
us-gaap:OtherRealEstate

us-gaap:OtherRealEstateAndForeclosedAssets
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:OtherShortTermBorrowings
us-gaap:ShortTermDebtType

us-gaap:PledgedAssetsNotSeparatelyReportedFinanceReceivables

us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged

us-gaap:PreferredStockValue

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivable

us-gaap:SecuritiesPurchasedUnderAgreementsToResell

us-gaap:SecuritiesPurchasedUnderAgreementsToResellAmountOffsetAgainstCollateral

us-gaap:SecuritiesPurchasedUnderAgreementsToResellGross

us-gaap:SecuritiesPurchasedUnderAgreementsToResellLiability

us-gaap:SecuritiesSoldUnderAgreementsToRepurchase

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseAsset

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseGross

us-gaap:SecurityOwnedAndSoldNotYetPurchasedFairValueSecuritySoldNotYetPurchased

us-gaap:SeniorNotes
us-gaap:DebtInstrument
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:ShortTermBorrowings
us-gaap:ShortTermDebtType

us-gaap:SubordinatedDebt
us-gaap:DebtInstrument

us-gaap:TierOneLeverageCapital

us-gaap:TierOneLeverageCapitalRequiredToBeWellCapitalized

us-gaap:TierOneLeverageCapitalToAverageAssets

us-gaap:TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets

us-gaap:TierOneRiskBasedCapitalRequiredToBeWellCapitalized

us-gaap:TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets

us-gaap:TimeDepositMaturitiesAfterYearFive

us-gaap:TimeDepositMaturitiesYearFive

us-gaap:TimeDepositMaturitiesYearFour

us-gaap:TimeDepositMaturitiesYearThree

us-gaap:TimeDepositMaturitiesYearTwo

us-gaap:TimeDeposits
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:TimeDeposits100000OrMore

us-gaap:TradingSecurities
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnusedCommitmentsToExtendCredit

zions:BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioExcessActual

zions:CashCollateralPledgedForDerivativeLiabilities

zions:ChangeInFairValueOfDerivativeAssetByCreditValueAdjustment

zions:CommercialLettersOfCredit

zions:CommitmentsToExtendCreditExpiringInOneYear

zions:CommonStockAndAdditionalPaidInCapital

zions:CommonStockAndAdditionalPaidInCapitalChange

zions:CommonStockAndAdditionalPaidInCapitalPercentageChange

zions:DebtSecuritiesAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYear10

zions:DebtSecuritiesAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYear5Through10

zions:DebtSecuritiesAmortizedCostMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughFive

zions:DebtSecuritiesAmortizedCostMaturityAllocatedAndSingleMaturityDateYearOne

zions:DebtSecuritiesAvailableForSaleMaturityWeightedAverageYield
us-gaap:InformationByCategoryOfDebtSecurity
us-gaap:InformationByCategoryOfDebtSecurity
zions:DebtSecuritiesHeldToMaturityMaturityWeightedAverageYield

zions:DebtSecuritiesMaturityAllocatedAndSingleMaturityDateAmortizedCost

zions:DebtSecuritiesMaturityWeightedAverageYield

zions:DebtSecuritiesWeightedAverageYieldMaturityAfterYear10

zions:DebtSecuritiesWeightedAverageYieldMaturityAfterYear5Through10

zions:DebtSecuritiesWeightedAverageYieldMaturityAfterYearOneThroughFive

zions:DebtSecuritiesWeightedAverageYieldMaturityYearOne
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
zions:DebtToValueRatioWeightedAverage

zions:DeferredTaxAssetsLeaseLiabilities
us-gaap:Range
zions:DeferredTaxAssetsNetOperatingLossesCapitalLossesAndTaxCredits

zions:DeferredTaxLiabilitiesPrepaidPensionCost

zions:DeferredTaxLiabilitiesRightOfUseAssets

zions:DeferredTaxLiabilitiesSecurityInvestmentsAndDerivativeFairValueAdjustments
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
zions:DerivativeInstrumentRedesignatedSwapsUnamortizedDebtBasisAdjustments

zions:EstimatedFairValueofInvestmentSecurities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
zions:FinancingReceivableAfterAllowanceForCreditLossAndHeldForSaleNotPartOfDisposalGroup

zions:FinancingReceivableAndOffBalanceSheetLiabilityAllowanceForCreditLoss
us-gaap:FinancingReceivablePortfolioSegment

zions:FinancingReceivableNonaccrualHeldForSaleNotPartOfDisposalGroup

zions:FinancingReceivableNonaccrualHeldForSaleNotPartOfDisposalGroupNoAllowance

zions:FinancingReceivableNonaccrualRelatedAllowance
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

zions:FinancingReceivableNonaccrualWithAllowance
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

zions:GrossUnrealizedGainsofInvestmentSecuritiesRecognizedinOCI

zions:GrossUnrealizedLossesofInvestmentSecuritiesRecognizedinOCI

zions:HeldToMaturitySecuritiesDebtMaturitiesAmortizedCost

zions:InvestmentSecuritiesEstimatedFairValue12MonthsorMore

zions:InvestmentSecuritiesEstimatedFairValueLessThan12Months

zions:InvestmentSecuritiesEstimatedFairValueTotal

zions:InvestmentSecuritiesGrossUnrealizedLosses12MonthsorMore

zions:InvestmentSecuritiesGrossUnrealizedLossesLessThan12Months

zions:InvestmentSecuritiesGrossUnrealizedLossesTotal

zions:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour

zions:LettersOfCreditAccruedLiabilityForGuarantees
us-gaap:LossContingenciesByNatureOfContingency
zions:LettersOfCreditStandby

zions:LiabilityForGuaranteeReserveForUnfundedLendingCommitments

zions:LiabilityForGuaranteesDeferredCommitmentFees

zions:LongTermDebtExcludingAssociatedHedges

zions:OtherLiabilitiesReserveForUnfundedLendingCommitments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
zions:OtherNoninterestBearingInvestmentsFairValueDisclosure
us-gaap:FinancialInstrument

zions:OtherNoninterestBearingInvestmentsValuedUnderCostMethod

zions:PrincipalBalanceofLoansSoldServicedLoans

zions:RiskWeightedValuesAssignedToAllOffBalanceSheetFinancialAndDerivativeInstruments

zions:SecuredDebtRepurchaseAgreementsOvernight

zions:SecuredDebtRepurchaseAgreementsTerm

zions:SecurityResellAgreementsMaximumAmountOutstanding

zions:SecurityResellAgreementsPercentageOfAgreementsWithMinimumMaturityPeriod

zions:SeniorNotesParAmount
us-gaap:DebtInstrument
us-gaap:AwardType
zions:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

zions:StandbyLettersOfCreditExpiringInOneYear

zions:StandbyLettersofCreditExpiringThereafter
us-gaap:DebtInstrument
zions:SubordinatedNotesParAmount
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
zions:TerminatedAndRedesignatedSwapsUnamortizedBasisAdjustments

zions:TerminatedSwapsUnamortizedDebtBasisAdjustments

zions:TimeDeposits250000orMoreDomestic

zions:TimeDepositsLessthan250000

zions:TotalUnfundedLendingCommitments

zions:UnfundedLendingCommitmentsonTroubledDebtRestructuring

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Interest Expense
Balance Sheet
Finite Lived Intangible Assets Net
Assets
Operating Lease Right Of Use Asset
Current Assets
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
NonCurrent Assets
Finite Lived Intangible Assets Net
Liabilities
Derivative Liabilities
Noncurrent Liabilities
Long Term Debt
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Proceeds From Payments For Other Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Dividends Common Stock
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
BanksAndOrInsurance
Interest And Dividend Income Operating
AssetsBanks
Cash And Due From Banks
LiabilitiesBanks
Short Term Borrowings

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:CommonStockParOrStatedValuePerShare us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName zions:RecursionPharmaceuticalsIncNA6.71e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:SharesIssued ▁███162.2164.0164.1164.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CommonStockSharesIssued NANA164.09NA163.978163.852165.057170.373176.935182.513187.554192.169195.392197.05197.532199.712202.131202.595203.0851203.850072205.103566204.543707204.417093204.278594203.192991203.192991203.014903202.898491185.112965184.895182184.677696184.600005184.436656184.246471184.199198184.156402184.117522184.228178184.135388184.294782184.31129183.854486182.784086177.20234173.331281160.300162
us-gaap:CommonStockSharesOutstanding NANA164.09NA163.978163.852165.057170.373176.935182.513187.554192.169195.392197.05197.532199.712202.131202.595203.0851203.850072205.103566204.543707204.417093204.278594203.192991203.192991203.014903202.898491185.112965184.895182184.677696184.600005184.436656184.246471184.199198184.156402184.117522184.228178184.135388184.294782184.31129183.854486182.784086177.20234173.331281160.300162
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▁▂▂▂▂▂▂▃▄▄▅▆▆▇▇▇████████████▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▃▁162.248163.8164.09164.009163.978163.852165.057170.373176.935182.513187.554192.169195.392197.05197.532199.712202.131202.595203.0851203.850072205.103566204.543707204.417093204.278594203.740914203.192991203.014903202.898491185.112965184.895182184.677696184.600005184.436656184.246471184.199198184.156402184.117522184.228178184.135388184.294782184.31129183.854486182.784086177.20234173.331281160.300162
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█163.054163.887NA163.779164.425172.998NA181.87189.098195.241NA205.765209.247210.243NA209.106208.183210.405NA204.714204.536204.096NA204.155202.888202.944NA197.271185.286185.123NA184.742184.062183.655NA183.383183.137182.964NA182.858182.728181.998NA172.865161.81151.073
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█162.742163.551NA163.608163.542164.143NA173.16179.156184.767NA192.973195.583196.722NA200.332201.822202.347NA204.312204.236203.967NA203.668202.888202.603NA196.687184.668184.44NA184.112183.647183.396NA183.237182.985182.798NA182.676182.472181.707NA172.865161.81151.073
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOption▁█0.0070.377NA0.9230.9380.766NA0.596NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:RestrictedStockUnitsRSU▁█1.3741.414NA1.3161.3210.627NA1.3481.4461.423NA1.491.709NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ██▇▅▄▃▅▆▆▆▆▆▅▆▄▅▅▅▄▄▄▄▄▄▃▄▄▄▄▄▂▆▄▄▃▄▄▃▄▄▃▃▂▂▁▂2.081.91.661.010.340.041.031.231.051.11.141.110.951.160.570.750.760.630.610.570.440.380.430.41-0.010.370.330.40.560.41-0.321.130.30.480.190.340.30.140.240.350.160.08-0.62-0.47-0.84-0.57
us-gaap:EarningsPerShareDiluted ██▇▅▄▃▅▆▅▆▆▆▅▆▄▅▅▄▄▄▄▄▄▄▃▄▄▄▄▄▂▆▄▄▃▄▄▃▄▄▃▃▂▂▁▂2.081.91.661.010.340.040.971.170.991.041.081.040.891.090.540.720.730.610.60.570.440.380.430.41-0.010.370.330.40.560.41-0.321.120.30.480.190.340.30.140.240.350.160.08-0.62-0.47-0.84-0.57
us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets NANA1.18e-05NANANA1.12e-07NANANA1.27e-07NANANANANANANANANANANA1.4e-07NANANA1.447e-05NANANA1.277e-05NANANA1.338e-05NANANA1.613e-05NANANANANANANA
us-gaap:CapitalToRiskWeightedAssets NANA1.4099999999999999e-05NANANA1.3200000000000002e-07NANANA1.3900000000000001e-07NANANANANANANANANANANA1.6e-07NANANA1.6e-07NANANA1.5e-07NANANA1.505e-05NANANA1.806e-05NANANANANANANA
  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:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,zions:AmegyCorporationSegment▃▁▃▄▆▆▄█152.0148.0151.0153.0157.0156.0154.0160.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,zions:CaliforniaBankAndTrustSegment▇▆█▄▁▂▃▃158.0155.0160.0152.0146.0149.0150.0150.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,zions:CommerceBankOfWashingtonSegment█▃▃▃▆▁▃▃16.014.014.014.015.013.014.014.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,zions:NationalBankOfArizonaSegment▃▁▆▁▃▆▆█64.063.065.063.064.065.065.066.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,zions:NevadaStateBankSegment▆█▄▃▃▁▄▆49.050.048.047.047.046.048.049.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,zions:VectraBankColoradoSegment█▆▆▆▆▃▁▃43.042.042.042.042.041.040.041.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,zions:ZionsBankSegment▅▁▃▄▄▃▆█205.0196.0200.0202.0203.0201.0208.0212.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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:ComprehensiveIncomeNetOfTax █▂▅▂▂▄▃▄▇▇▇▃▂▁381.0145.0277.0152.0162.0230.0177.0245.0346.0341.0337.0178.0148.0110.0NA152.0230.0150.0NA113.612149.254133.39664.85119.19693.697105.15764.7121.798128.175147.849150.93101.567115.373149.977146.833151.2687.157110.19385.76924.7567.54714.95NANANANA
us-gaap:GainLossOnInvestments █▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▁▆▆▅▆▇▁▆▆▆▃▆▆▆▆▆▆▆▆▅63.011.012.04.0-4.0-6.03.02.0-3.01.02.0-1.01.00.01.05.02.05.0-3.4228.482.734-0.5220.0463.577-133.5973.114-2.014-13.4617.53931.799-148.043-4.322-3.161-3.986-74.2312.993-1.682-0.344-8.8374.99-9.19-2.267-11.725-16.366NANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic █▇▇▅▄▃▅▆▆▆▆▆▆▆▆▅▆▅▅▅▅▄▄▄▃▄▄▄▅▄▂▅▄▅▄▅▄▄▄▅▄▄▁▂▁▂455.0411.0359.0215.082.016.0235.0288.0256.0274.0290.0292.0253.0308.0260.0243.0248.0184.0206.886191.957174.18131.885147.42141.77919.459143.201125.573148.997189.522157.331-63.327172.621126.117171.02187.503170.301142.5141.262136.648168.066126.93589.624-96.491-78.637-136.259-91.781
us-gaap:IncomeTaxExpenseBenefit ▇▆▅▄▃▂▄▅▅▅▅▅▅▅█▆▆▄▅▅▅▄▄▄▃▄▄▅▅▅▁▅▄▅▄▅▄▄▄▅▅▄▁▁▁▁101.089.075.040.016.02.052.066.058.061.064.069.056.070.0137.083.080.045.069.48564.69460.23141.44844.93340.785.49951.17643.75953.10969.97256.121-21.85561.10743.09160.63429.81760.70451.03651.85947.87759.34854.32537.033-24.097-31.18-22.898-28.644
us-gaap:IncomeTaxesPaidNet NANA21.0131.016.01.054.047.0134.0-2.065.051.090.01.040.084.0128.0-6.060.36252.51101.512-0.08431.168.67992.326-0.51.65358.645122.737-0.08124.86232.453120.4383.56555.89267.7729.771-21.6683.3150.00.536-0.108-0.012-0.2228.181-352.753
us-gaap:InterestAndFeeIncomeLoansAndLeases ▄▄▅▅▅▆▇███▇▆▅▄▄▃▃▂▂▂▂▁▂▁▁▁▂▂▂▂▃▂▃▃▂▄▄▄▅▅▆▅▆▇▇▇492.0488.0499.0505.0514.0532.0558.0581.0581.0570.0554.0537.0514.0497.0477.0468.0469.0433.0438.031436.424433.743420.508429.842419.981420.642415.755431.083430.415433.801434.344458.493442.366460.308453.433445.501479.199478.569486.615504.243520.133523.741518.157539.452550.489547.662547.636
us-gaap:InterestExpense ▁▁▁▁▂▄▄▅▆▅▄▃▃▂▂▂▂▁▁▁▁▁▁▂▂▂▂▂▂▃▃▃▃▃▃▄▄▄▄▄▇▆█▆█▆15.017.020.026.032.074.088.0110.0115.099.080.066.058.047.036.035.030.026.021.29621.50822.10322.05924.72630.85331.53231.131.5343.45746.90851.10357.98257.88662.57666.63368.370.83986.24481.39977.56583.801142.494128.536167.17130.059170.392124.835
us-gaap:InterestExpenseDebt ▁▁▁▁▁▄▄▇█▇▅▄▅▄▃▃▂▂▁▁▂▂▂▃▃▃8.08.07.08.09.023.026.041.049.042.032.028.029.027.020.020.016.013.08.5938.95910.23410.21412.48218.31119.21118.996NA31.14434.81238.324NA43.3847.43350.991NANANANANANANANANANANANA
us-gaap:InterestIncomeExpenseNet ▇▇▇▇▇▇▇█████▇▇▆▆▆▄▄▄▃▃▃▂▂▁▂▁▁▁▂▁▂▁▂▃▂▂▃▄▁▂▁▃▁▃555.0545.0550.0555.0563.0548.0559.0567.0569.0576.0576.0565.0548.0542.0526.0522.0528.0489.0480.47469.187464.849452.842448.833425.377423.704417.346430.429416.818416.283416.465432.035415.521430.657418.115429.957444.198431.987442.299461.908470.595416.172423.856406.868451.875413.346455.3
us-gaap:InterestPaidNet ▁▁▂▃▂██21.022.031.041.035.088.086.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss █▇▇▄▂▁▄▅▅▅354.0322.0284.0175.066.014.0183.0222.0198.0213.0NANANANANANANANANANANANANANANANANA95.888119.55101.21-41.472111.51483.026110.72358.252109.85191.73789.67689.019109.09372.87552.817-72.2-47.325-112.993-60.21
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ██▇▅▄▃▆▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▃▄▄▄▄▄▂▆▄▄▃▄▄▃▄▄▃▃▁▂▁▂345.0314.0275.0167.057.06.0174.0214.0189.0205.0217.0215.0187.0231.0114.0152.0154.0129.0124.99116.89590.64778.77788.19784.238-1.175.27966.76179.127104.4976.19-59.437209.70755.38588.32435.60562.32255.21525.48944.4265.16529.03814.767-110.287-80.469-135.228-86.521
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted █▇▇▄▂▁▄▅▅▅▅▅▅▆▃▄▄340.0312.0272.0166.056.07.0171.0213.0188.0204.0215.0214.0186.0229.0113.0151.0153.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▁▄▄▆█▄▅▇▆▆▃▃▂▃▄▅▄▂▄▅▅▃▄▆▄▄▅▄▅█▄▅▅▆▅▄▅27.0-177.0-7.0-23.096.0216.0-6.023.0148.0128.0111.0-45.0-49.0-128.0-82.0-8.062.011.0-131.582-13.65135.30542.959-37.63718.19779.73713.132-17.11425.918.62546.639192.402-9.94732.34739.25488.58141.409-4.5820.517NANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▄▅▄▁▅▆▆111.0102.0104.0101.094.0104.0107.0106.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▆▃▅▆▁█▃▆139.0133.0138.0139.0130.0143.0133.0140.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RevenuesNetOfInterestExpense █▄▄▄▁▁▄▄760.0714.0717.0713.0680.0682.0711.0715.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 ██▇▆▆▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁87208.085121.081479.078357.076447.071467.069172.070361.070065.069195.068746.066731.066457.066481.066288.065564.065446.065463.063239.16561038.8659642.99259179.91359669.52558410.92758365.45957555.93157208.87455458.8755111.27556080.84456031.12755188.31254904.5454110.56455511.91853087.00153407.01252896.30753149.10951531.3251361.41450807.70851034.88651047.77652147.29551712.981
us-gaap:Liabilities ██▇▆▆▅▅▅▅▄▄▄▄▄▄▄▄▄▃▃▃▂▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁79175.077188.073593.070689.068872.063995.061819.062852.062466.061607.061168.059178.058836.058837.058609.057803.057697.057733.055604.85953359.55352016.60951554.17652162.00650772.83250835.28450101.63349839.34448136.71148411.18549494.62849566.56448855.50348044.20847759.91149463.27747168.74646917.64946509.52946165.88144612.40344448.32344063.12144387.67244553.18545726.19345856.069
us-gaap:LiabilitiesAndStockholdersEquity ██▇▆▆▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁87208.085121.081479.078357.076447.071467.069172.070361.070065.069195.068746.066731.066457.066481.066288.065564.065446.065463.063239.16561038.8659642.99259179.91359669.52558410.92758365.45957555.93157208.87455458.8755111.27556080.84456031.12755188.31254904.5454110.56455511.91853087.00153407.01252896.30753149.10951531.3251361.41450807.70851034.88651047.77652147.29551712.981
us-gaap:StockholdersEquity █▇▆▄▃▂▁▃▄▃▃8033.07933.07886.07668.07575.07472.07353.07509.07599.07588.07578.0NANANA7679.0NANANANANANANANANANANANANANANA6464.5636332.8096860.3326355.4056052.0695921.1176491.9716389.1136985.3086920.7666914.5936745.8526648.2796495.4326421.8425842.206
us-gaap:TierOneRiskBasedCapital NANA6579.0NANANA6285.0NANANA6811.0NANANANANANANANANANANA6580.326NANANA6620.282NANANA5763.463NANANA5883.669NANANA6946.29NANANANANANANA
  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:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▁▂▁▂▂▆▆█▁525.0576.0543.0576.0570.0730.0705.0796.0538.0NA614.0NANANA548.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Land NANA257.0NANANA235.0NANANA238.0NANANA234.0NANANA229.398NANANA229.693NANANA233.3NANANA185.119NANANA184.762NANANA187.187NANANA191.612NANANA
  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:LeaseholdImprovementsGross NANA165.0NANANA164.0NANANA145.0NANANA135.0NANANA139.568NANANA138.765NANANA133.624NANANA129.056NANANA121.953NANANA120.015NANANA119.03NANANA
us-gaap:PropertyPlantAndEquipmentNet ███▇▇▇▇▇▇▇▆▆▆▆▆▆▆▅▅▅▄▄▄▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1239.01236.01209.01187.01173.01144.01142.01146.01133.01125.01124.01111.01099.01098.01094.01083.01069.01047.01019.508986.553955.54925.43905.462873.8856.577844.9829.809811.127803.214785.519726.372720.365717.299706.746708.882709.188714.913715.815719.276726.503722.6721.487720.985719.592705.372707.387
us-gaap:Goodwill NANA1014.0NANANA1014.0NANANA1014.0NANA1016.01014.01014.01014.01014.01014.1291014.1291014.1291014.1291014.1291014.1291014.1291014.1291014.1291014.1291014.1291014.1291014.1291014.1291014.1291014.1291014.1291015.1291015.1291015.1291015.1291015.1291015.1611015.1611015.1611015.1611015.1611015.161
us-gaap:FiniteLivedIntangibleAssetsNet NANA2.0NANANANANANANA1.0NANANA2.0NANANA8.42NANANA16.272NANANA25.52NANANA36.444NANANA50.818NANANA67.83NANANA87.898NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass zions:CustomerRelationshipsAndOtherIntangiblesNANA2.0NANANA0.0NANANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetIncludingGoodwill ▄███▁▁▁▁▁▁▄▄▄1015.01016.01016.01016.01014.01014.01014.01014.01014.01014.01015.01015.01015.0NA1016.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANANA32.022.06.037.034.036.073.0130.0170.0149.0123.093.0207.0198.0231.0250.464170.0164.0180.0203.041201.0NANA224.259NANANA304.381NANANA405.605NANANA509.134NANANA540.063NANANA
us-gaap:OperatingLeaseRightOfUseAsset ▁▁▄▄▃▃▅██202.0204.0213.0217.0209.0211.0218.0231.0232.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 NANA2239.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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:LongTermDebt ▄▄▄▄▄▆▆▄▄▄▂▃▁▁▁▁▁▁▂▂▂▂▃▃▃▄▄▄▇▇██▇█████▇▆▆▆▇▇▇▇1308.01299.01336.01347.01353.01795.01723.01242.01236.01228.0724.0879.0383.0383.0383.0383.0383.0383.0534.85570.385698.712802.448817.348944.7521050.9381089.3211092.2821113.6771933.1362158.7012273.5752304.3012173.1762352.5692337.1132326.6592274.5712283.1211954.4621898.4391879.6691913.0831942.6221939.3951934.412016.461
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo ▂▁█▆41.040.046.044.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▃▁█▇32.030.039.038.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▃▁█▇23.021.030.029.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA21.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA95.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 █▇▆▄▃▂▁▃▄▃▃8033.07933.07886.07668.07575.07472.07353.07509.07599.07588.07578.0NANANA7679.0NANANANANANANANANANANANANANANA6464.5636332.8096860.3326355.4056052.0695921.1176491.9716389.1136985.3086920.7666914.5936745.8526648.2796495.4326421.8425842.206
us-gaap:AdditionalPaidInCapital ▁▁▂▂▂▁▂▃▄▆▇█2565.02653.02686.02680.02675.02668.02735.03002.03271.03541.03806.04052.0NANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▇▇▆▆▇▆▆▆▆▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▂4853.04566.04309.04090.03979.03979.04009.03892.03737.03603.03456.03296.03139.02999.02807.02700.02572.02435.02321.5712211.7932110.0692031.271966.911894.6231823.0431836.6191769.7051711.7851640.7851542.1951473.671540.4551338.4011290.1311203.8151170.4771110.121060.5251036.59994.38931.345904.247889.2841001.5591083.8451220.439
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▆███▇▆▆▆▄▄▃▃▃▄▅▅▅▄▅▆▅▅▅▅▅▄▅▄▄▄▃▃▂▂▁▁▁▁▁▂▂▂▂▂▂175.0148.0325.0332.0355.0259.043.049.025.0-122.0-250.0-361.0-315.0-267.0-139.0-57.0-49.0-111.0-121.58110.023.652-11.653-54.612-16.975-35.172-114.909-128.041-110.927-136.837-145.462-192.101-384.503-374.556-406.903-446.157-534.738-576.147-571.567-592.084-588.834-504.491-499.163-461.296-452.553-433.02-428.177
  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 ▁▇▄▄▅▄▅▄▅▂▅▆▄▅▄▄▄▆▄▄▃▄▄▄▃▃▄▄▃▄▃▅▅▄▄▃▅▅▅▄▅▅▅▆▃█-201.0484.0171.0150.0245.0153.0351.0126.0262.0-42.0351.0387.0163.0275.0125.0227.0195.0380.0133.222228.27911.804222.762148.799212.52285.03188.817116.875198.24812.426126.55882.733272.473311.094210.266163.25993.566260.707248.095265.716215.904346.226269.221329.809372.62888.013670.544
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▂▃▅▁▄█▇▆▇▅▆▇▆▆▇▇▄▅▅▇▇▅▆▆▆▅▅█▇▆▆▆▇▅▇▆▇▅▆▆▇▆█▆▅-1525.0-3998.0-3023.0-1880.0-5176.0-2125.0978.0112.0-802.087.0-1967.0-410.0100.0-429.0-842.0-24.0-173.0-2880.0-1957.092-1456.54-158.745136.123-1156.289-271.23-810.035-413.164-1444.275-1147.8361175.65275.902-882.955-240.842-669.046399.683-1591.029313.824-567.889-63.88-1604.309-260.786-655.84428.495-501.722753.047-528.833-1648.189
us-gaap:NetCashProvidedByUsedInFinancingActivities ▅▇▆▅█▅▃▃▃▃▅▃▂▃▃▃▃▅▅▄▃▂▄▃▄▃▄▃▁▃▃▃▃▁▅▂▃▂▄▃▃▂▃▁▃▃1675.03547.02819.01736.04771.01997.0542.020.0542.0-123.01713.072.0-265.076.0724.0-143.0-107.02329.02008.0451221.151189.4-639.4011203.115-96.836762.384203.2631584.614154.148-1145.266-36.224610.223150.354612.232-1523.0392208.759-471.145349.669-326.3791460.175112.622395.506-272.70235.393-1133.784464.184652.847
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃▄▃▄▁▄▂█▄▂-51.033.0-33.06.0-160.025.0-91.0258.02.0-78.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 ▄▅▄▃▁▁▃▃▃▃▃▃▃▃█▃▃▃▃▃▃▃▄▃▂▃▃▃▁▆▁▃▃▃▂▃▃▄▃▄▄▅▄▂▂▂38.070.039.0-3.0-48.0-46.00.0-5.0-12.015.04.0-6.0-11.013.0150.0-4.0-5.013.00.3711.976-6.109-4.6821.253-10.027-44.4313.4023.572.96-58.8778.278-59.5055.832-7.7261.282-15.7256.458-0.6319.685-13.66241.56333.91353.7944.332-21.039-15.795-36.163
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▇▄▄▅▄▅▄▅▂▅▆▄▅▄▄▄▆▄▄▃▄▄▄▃▃▄▄▃▄▃▅▅▄▄▃▅▅▅▄▅▅▅▆▃█-201.0484.0171.0150.0245.0153.0351.0126.0262.0-42.0351.0387.0163.0275.0125.0227.0195.0380.0133.222228.27911.804222.762148.799212.52285.03188.817116.875198.24812.426126.55882.733272.473311.094210.266163.25993.566260.707248.095265.716215.904346.226269.221329.809372.62888.013670.544
us-gaap:NetIncomeLoss █▇▇▄▂▁▄▅▅▅354.0322.0284.0175.066.014.0183.0222.0198.0213.0NANANANANANANANANANANANANANANANANA95.888119.55101.21-41.472111.51483.026110.72358.252109.85191.73789.67689.019109.09372.87552.817-72.2-47.325-112.993-60.21
us-gaap:ShareBasedCompensation ▂█▁▁▂▇▁▂▁█▁▁▂▇▁▁▂▇▁▂▂▆5.014.04.04.05.013.04.05.04.014.04.04.05.013.04.04.05.012.04.06.05.011.0NANANANANANANANANANANANANANANANANANANANANANANANA
  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 ▅▂▃▅▁▄█▇▆▇▅▆▇▆▆▇▇▄▅▅▇▇▅▆▆▆▅▅█▇▆▆▆▇▅▇▆▇▅▆▆▇▆█▆▅-1525.0-3998.0-3023.0-1880.0-5176.0-2125.0978.0112.0-802.087.0-1967.0-410.0100.0-429.0-842.0-24.0-173.0-2880.0-1957.092-1456.54-158.745136.123-1156.289-271.23-810.035-413.164-1444.275-1147.8361175.65275.902-882.955-240.842-669.046399.683-1591.029313.824-567.889-63.88-1604.309-260.786-655.84428.495-501.722753.047-528.833-1648.189
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▅▅▄▅▂▂▃▃▂▄▃▂▂▃▄▄▅▅▅▅▄▅▄▃▃▃▂▃█▂▂▂▁▂▁▁▁▁▂▁▂▂▂▁▁31.053.048.041.054.028.023.034.035.025.039.036.026.028.036.039.044.050.052.48251.30751.85940.01551.24638.74733.83533.53336.91526.15335.81576.91625.14220.90526.73315.820.93215.14517.65515.16215.4422.74919.29520.18520.84825.63617.03815.549
  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 ▅▇▆▅█▅▃▃▃▃▅▃▂▃▃▃▃▅▅▄▃▂▄▃▄▃▄▃▁▃▃▃▃▁▅▂▃▂▄▃▃▂▃▁▃▃1675.03547.02819.01736.04771.01997.0542.020.0542.0-123.01713.072.0-265.076.0724.0-143.0-107.02329.02008.0451221.151189.4-639.4011203.115-96.836762.384203.2631584.614154.148-1145.266-36.224610.223150.354612.232-1523.0392208.759-471.145349.669-326.3791460.175112.622395.506-272.70235.393-1133.784464.184652.847
us-gaap:RepaymentsOfLongTermDebt NANA0.00.0NANANANANANA162.00.00.00.00.00.00.0153.036.127128.91104.44710.636123.67111.47744.428.18527.152834.964236.404124.755261.9550.153551.61618.398110.1087.604255.0380.1410.1418.1910.1750.1560.1237.99965.2930.061
us-gaap:PaymentsOfDividends ▇█▇▇▇█▇█▇█▇█▆▅▄▃▂▂▂▂▁▂▂▂▂▁▁▁▁▁▂▃▃▁▁▃▃▄▄▄▄▃▃▂▁▁63.066.064.065.064.066.064.069.061.066.064.068.055.049.040.034.026.029.026.74430.89122.79527.42128.35627.4229.04523.23424.93923.24324.20723.74125.44634.93535.04724.23224.49332.7735.52240.79640.93440.29740.30334.60134.68329.77221.97922.882
us-gaap:Dividends █▇█▇█▇██▇▇██▆▄▃▁▁65.064.066.064.066.064.066.067.063.064.066.066.057.047.042.032.030.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▄▂▁▁▁▃████▇▆▄▄▄▄▂▂▂▂▁▁▁▁101.050.00.00.01.075.0276.0275.0275.0276.0250.0186.0126.0122.0115.0115.052.050.052.21145.0295.01.06.6810.0NANANANANANANANANANANANANANANANANANANANANANA
  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:DebtInstrumentInterestRateStatedPercentage NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Par Or Stated Value Per Share

us-gaap:CommonStockParOrStatedValuePerShare us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:CommonStockParOrStatedValuePerShare

zions:RecursionPharmaceuticalsInc


Common
Period End2021-03-31
Value6.71
Percentage of CommonStockParOrStatedValuePerShare100.0

Shares Issued

us-gaap:SharesIssued

us-gaap:SharesIssued


Shares
Period End2021-06-302021-03-312020-12-312020-09-30
Value162164164164
Percentage of SharesIssued100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-07-282014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value16416316316517017618218719219519719719920220220320320520420420420320320320217185184184184184184184184184184184184184183182177173160150
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value164163163165170176182187192195197197199202202203203205204204204203203203202185184184184184184184184184184184184184183182177173160150
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value162163164164163163165170176182187192195197197199202202203203205204204204203203203202185184184184184184184184184184184184184183182177173160150115107
Percentage of CommonStockSharesOutstanding0.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value163163163164172181189195205209210209208210204204204204202202197185185184184183183183182182182181172161151
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value162163163163164173179184192195196200201202204204203203202202196184184184183183183182182182182181172161151
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value7000.0377000.0923000.0938000.0766000.0596000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value1374000.01414000.01316000.01321000.0627000.01348000.01446000.01423000.01490000.01709000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount19628.6375.1142.6140.881.9226.20.00.00.00.0

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
Value2.081.91.661.010.340.041.031.231.051.11.141.110.951.160.570.750.760.630.610.570.440.380.430.41-0.010.370.330.40.560.41-0.321.130.30.480.190.340.30.140.240.350.160.08-0.62-0.47-0.84-0.57
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
Value2.081.91.661.010.340.040.971.170.991.041.081.040.891.090.540.720.730.610.60.570.440.380.430.41-0.010.370.330.40.560.41-0.321.120.30.480.190.340.30.140.240.350.160.08-0.62-0.47-0.84-0.57
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

Tier One Risk Based Capital To Risk Weighted Assets

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets


Tier
Period End2020-12-312019-12-312018-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value11.80.1120.1270.1414.4712.7713.3816.13
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

Capital To Risk Weighted Assets

us-gaap:CapitalToRiskWeightedAssets

us-gaap:CapitalToRiskWeightedAssets


Capital
Period End2020-12-312019-12-312018-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value14.10.1320.1390.160.160.1515.0518.06
Percentage of CapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value3811452771521622301772453463413371781481101522301501131491336411993105641211281471501011151491461518711085246714
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating66.825.848.526.227.237.027.436.250.650.551.428.224.418.727.341.229.123.230.728.113.726.120.623.414.026.527.731.630.821.523.430.929.529.416.821.015.94.512.12.7

Gain Loss On Investments

us-gaap:GainLossOnInvestments

us-gaap:GainLossOnInvestments


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value6311124.0-4.0-6.03.02.0-3.01.02.0-1.01.00.01.05.02.05.0-3.4228.482.734-0.5220.0463.577-133.5973.114-2.014-13.4617.53931-148.043-4.322-3.161-3.986-74.2312.993-1.682-0.344-8.8374.99-9.19-2.267-11.725-16.366
Percentage of GainLossOnInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating11.12.02.10.7-0.7-1.00.50.3-0.40.10.3-0.20.20.00.20.90.41.0-0.71.70.6-0.10.00.8-29.30.7-0.4-2.91.66.8-30.2-0.9-0.6-0.8-14.90.6-0.3-0.1-1.60.9-1.6-0.4-2.0-2.8

Income Loss From Continuing Operations Before Income Taxes Domestic

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic


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
Value455411359215821623528825627429029225330826024324818420619117413114714119143125148189157-63.3271721261718717014214113616812689-96.491-78.637-136.259-91.781
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating79.873.162.937.013.82.636.342.537.440.644.246.341.752.346.343.644.435.741.239.135.827.831.131.14.331.927.232.440.933.6-12.936.525.635.317.633.127.527.025.330.322.716.2-16.8-13.5-23.3-15.8

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value251.01.0-31.0-56.0-26.0-53.0-14.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic5.50.20.3-14.4-68.3-162.5-22.6-4.9
Percentage of InterestAndDividendIncomeOperating4.40.20.2-5.3-9.4-4.2-8.2-2.1
Percentage of InterestAndDividendIncomeOperating zions:CorporateReconcilingItemsAndEliminations0.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value113116876553-29.05458
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic24.828.224.230.264.6-181.223.020.1
Percentage of InterestAndDividendIncomeOperating19.820.615.211.28.9-4.78.38.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:AmegyCorporationSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value114112804126347281
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic25.127.322.319.131.7212.530.628.1
Percentage of InterestAndDividendIncomeOperating20.019.914.07.14.45.511.112.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:CaliforniaBankAndTrustSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1211118.05.02.010.011
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic2.62.73.13.76.112.54.33.8
Percentage of InterestAndDividendIncomeOperating2.12.01.91.40.80.31.51.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:CommerceBankOfWashingtonSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value41353320139.02827
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic9.08.59.29.315.956.211.99.4
Percentage of InterestAndDividendIncomeOperating7.26.25.83.42.21.44.34.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:NationalBankOfArizonaSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value25322414-27.0-1.01312
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic5.57.86.76.5-32.9-6.25.54.2
Percentage of InterestAndDividendIncomeOperating4.45.74.22.4-4.5-0.22.01.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:NevadaStateBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value251420-3.016-11.01417
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic5.53.45.6-1.419.5-68.86.05.9
Percentage of InterestAndDividendIncomeOperating4.42.53.5-0.52.7-1.82.22.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:VectraBankColoradoSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ZionsBankSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1009010310152389796
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic22.021.928.747.063.4237.541.333.3
Percentage of InterestAndDividendIncomeOperating17.516.018.017.48.76.115.014.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ZionsBankSegment0.00.00.00.00.00.00.00.0

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
Value101897540162.052665861646956701378380456964604144405.4995143536956-21.8556143602960515147595437-24.097-31.18-22.898-28.644
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 InterestAndDividendIncomeOperating17.715.813.16.92.70.38.09.78.59.09.810.99.211.924.414.914.38.713.813.212.48.79.58.91.211.49.511.515.112.0-4.512.98.712.56.011.89.89.98.910.79.76.7-4.2-5.4-3.9-4.9

us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value4.04.0-3.0-4.03.01.00.0
Percentage of IncomeTaxExpenseBenefit4.04.5-4.0-10.018.850.00.0
Percentage of InterestAndDividendIncomeOperating0.70.7-0.5-0.70.50.20.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value21131161.05447134-2.06551901.04084128-6.06052101-0.084318.67992-0.51.65358122-0.08124321203.56555679.771-21.6683.3150.00.536-0.108-0.012-0.2228-352.753
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating3.722.52.70.28.36.919.6-0.39.98.114.90.27.115.122.9-1.212.010.720.8-0.06.61.920.3-0.10.412.726.5-0.05.16.924.40.711.213.21.9-4.10.60.00.1-0.0-0.0-0.04.8-60.8

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
Value492488499505514532558581581570554537514497477468469433438436433420429419420415431430433434458442460453445479478486504520523518539550547547
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 InterestAndDividendIncomeOperating86.386.887.486.986.485.586.285.884.984.484.585.184.884.484.984.084.184.187.388.989.188.590.892.192.492.793.393.593.792.993.693.493.393.589.493.092.392.993.593.893.793.894.094.693.894.4

us-gaap:InterestAndFeeIncomeLoansAndLeases us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value15151516133.00.0-1.0
Percentage of InterestAndFeeIncomeLoansAndLeases3.03.13.03.22.50.60.0-0.2
Percentage of InterestAndDividendIncomeOperating2.62.72.62.82.20.50.0-0.1
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.0

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
Value1517202632748811011599806658473635302621212222243031313143465157576266687086817783142128167130170124
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 InterestAndDividendIncomeOperating2.63.03.54.55.411.913.616.216.814.712.210.59.68.06.46.35.45.04.24.44.54.65.26.86.96.96.89.410.110.911.812.212.713.713.713.816.615.514.415.125.523.329.122.329.221.5

Interest Expense Debt

us-gaap:InterestExpenseDebt

us-gaap:InterestExpenseDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value8.08.07.08.09.0232641494232282927202016138.5938.959101012181918313438434750
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1.41.41.21.41.53.74.06.17.26.24.94.44.84.63.63.62.92.51.71.82.12.22.64.04.24.26.87.58.29.29.610.5

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
Value555545550555563548559567569576576565548542526522528489480469464452448425423417430416416416432415430418429444431442461470416423406451413455
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 InterestAndDividendIncomeOperating97.497.096.395.594.688.186.483.883.285.387.889.590.492.093.693.794.695.095.895.695.595.494.893.293.193.193.290.689.989.188.287.887.386.386.386.283.484.585.684.974.576.770.977.770.878.5

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value7.05.08.05.06.07.05.05.0
Percentage of InterestIncomeExpenseNet1.30.91.50.91.11.30.90.9
Percentage of InterestAndDividendIncomeOperating1.20.91.40.91.01.10.80.7
Percentage of InterestAndDividendIncomeOperating zions:CorporateReconcilingItemsAndEliminations0.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value117116117121126120121123
Percentage of InterestIncomeExpenseNet21.121.321.321.822.421.921.621.7
Percentage of InterestAndDividendIncomeOperating20.520.620.520.821.219.318.718.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:AmegyCorporationSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value133131131129127124125127
Percentage of InterestIncomeExpenseNet24.024.023.823.222.622.622.422.4
Percentage of InterestAndDividendIncomeOperating23.323.322.922.221.319.919.318.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:CaliforniaBankAndTrustSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1413131314121313
Percentage of InterestIncomeExpenseNet2.52.42.42.32.52.22.32.3
Percentage of InterestAndDividendIncomeOperating2.52.32.32.22.41.92.01.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:CommerceBankOfWashingtonSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value5352545454545456
Percentage of InterestIncomeExpenseNet9.59.59.89.79.69.99.79.9
Percentage of InterestAndDividendIncomeOperating9.39.39.59.39.18.78.38.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:NationalBankOfArizonaSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3737363737353737
Percentage of InterestIncomeExpenseNet6.76.86.56.76.66.46.66.5
Percentage of InterestAndDividendIncomeOperating6.56.66.36.46.25.65.75.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:NevadaStateBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3534343434333334
Percentage of InterestIncomeExpenseNet6.36.26.26.16.06.05.96.0
Percentage of InterestAndDividendIncomeOperating6.16.06.05.95.75.35.15.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:VectraBankColoradoSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ZionsBankSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value159157158162165163171172
Percentage of InterestIncomeExpenseNet28.628.828.729.229.329.730.630.3
Percentage of InterestAndDividendIncomeOperating27.927.927.727.927.726.226.425.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ZionsBankSegment0.00.00.00.00.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value21223141358886
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating3.73.95.47.15.914.113.3

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value354322284175661418322219821395119101-41.47211183110581099189891097252-72.2-47.325-112.993-60.21
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.157.349.730.111.12.328.332.828.931.620.825.821.6-8.523.616.822.811.721.317.717.116.519.713.09.6-12.6-8.1-19.4-10.4

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1111121210.02.00.0-1.0
Percentage of NetIncomeLoss3.13.44.26.915.214.30.0-0.5
Percentage of InterestAndDividendIncomeOperating1.92.02.12.11.70.30.0-0.1
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3543222841756614183222
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.157.349.730.111.12.328.332.8
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value345314275167576.017421418920521721518723111415215412912411690788884-1.175667910476-59.43720955883562552544652914-110.287-80.469-135.228-86.521
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating60.555.948.228.79.61.026.931.627.630.433.134.130.939.220.327.327.625.024.923.818.616.618.618.5-0.216.814.517.222.616.3-12.144.311.218.27.112.110.74.98.211.85.22.7-19.2-13.8-23.2-14.9

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value340312272166567.0171213188204215214186229113151153
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating59.655.547.628.69.41.126.431.527.530.232.833.930.738.920.127.127.4

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value27-177.0-7.0-23.096216-6.023148128111-45.0-49.0-128.0-82.0-8.06211-131.582-13.6513542-37.637187913-17.114258.62546192-9.94732398841-4.5820
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating4.7-31.5-1.2-4.016.134.7-0.93.421.619.016.9-7.1-8.1-21.7-14.6-1.411.12.1-26.2-2.87.39.0-7.94.017.52.9-3.75.61.910.039.3-2.16.68.117.88.0-0.93.9

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value27-177.0-7.0-23.096216-6.024147128111-46.0-48.0-128.0-57.0-8.06211-131.582-13.6513542-37.637187913-17.114258.62546192-9.94732398841-4.5820
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0104.399.3100.0100.0102.298.0100.069.5100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating4.7-31.5-1.2-4.016.134.7-0.93.521.519.016.9-7.3-7.9-21.7-10.1-1.411.12.1-26.2-2.87.39.0-7.94.017.52.9-3.75.61.910.039.3-2.16.68.117.88.0-0.93.9
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value11110210410194104107106
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating19.518.118.217.415.816.716.515.7

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value9.06.0119.09.05.0119.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.15.910.68.99.64.810.38.5
Percentage of InterestAndDividendIncomeOperating1.61.11.91.51.50.81.71.3
Percentage of InterestAndDividendIncomeOperating zions:CorporateReconcilingItemsAndEliminations0.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:ProductOrService

zions:CorporateReconcilingItemsAndEliminations, zions:ProductsAndServicesCapitalMarketsAndForeignExchangeFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.01.02.02.03.01.02.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.01.92.03.21.01.90.9
Percentage of InterestAndDividendIncomeOperating0.40.20.40.30.50.20.30.1
Percentage of InterestAndDividendIncomeOperating zions:CorporateReconcilingItemsAndEliminations zions:ProductsAndServicesCapitalMarketsAndForeignExchangeFees0.00.00.00.00.00.00.00.0

zions:CorporateReconcilingItemsAndEliminations, zions:ProductsAndServicesCommercialAccountFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value2.0-1.03.00.01.0-2.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.8-1.02.90.01.1-1.9
Percentage of InterestAndDividendIncomeOperating0.4-0.20.50.00.2-0.3
Percentage of InterestAndDividendIncomeOperating zions:CorporateReconcilingItemsAndEliminations zions:ProductsAndServicesCommercialAccountFees0.00.00.00.00.00.0

zions:CorporateReconcilingItemsAndEliminations, zions:ProductsAndServicesOtherCustomerRelatedFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value8.07.05.06.06.04.04.03.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.26.94.85.96.43.83.72.8
Percentage of InterestAndDividendIncomeOperating1.41.20.91.01.00.60.60.4
Percentage of InterestAndDividendIncomeOperating zions:CorporateReconcilingItemsAndEliminations zions:ProductsAndServicesOtherCustomerRelatedFees0.00.00.00.00.00.00.00.0

zions:CorporateReconcilingItemsAndEliminations, zions:ProductsAndServicesRetailAndBusinessBankingFees


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1.0-1.0-1.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.0-1.11.0
Percentage of InterestAndDividendIncomeOperating-0.2-0.2-0.20.2
Percentage of InterestAndDividendIncomeOperating zions:CorporateReconcilingItemsAndEliminations zions:ProductsAndServicesRetailAndBusinessBankingFees0.00.00.00.0

zions:CorporateReconcilingItemsAndEliminations, zions:ProductsAndServicesWealthManagementAndTrustFees


Revenue
Period End2020-12-312019-12-312019-09-30
Value0.04.05.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.03.74.7
Percentage of InterestAndDividendIncomeOperating0.00.60.7
Percentage of InterestAndDividendIncomeOperating zions:CorporateReconcilingItemsAndEliminations zions:ProductsAndServicesWealthManagementAndTrustFees0.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:ProductsAndServicesCapitalMarketsAndForeignExchangeFees, zions:AmegyCorporationSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1.01.01.01.01.02.02.02.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.01.01.01.11.91.91.9
Percentage of InterestAndDividendIncomeOperating0.20.20.20.20.20.30.30.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCapitalMarketsAndForeignExchangeFees zions:AmegyCorporationSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCapitalMarketsAndForeignExchangeFees, zions:ZionsBankSegment


Revenue
Period End2020-12-312020-09-302020-06-30
Value0.00.0-1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-1.1
Percentage of InterestAndDividendIncomeOperating0.00.0-0.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCapitalMarketsAndForeignExchangeFees zions:ZionsBankSegment0.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCardFees, zions:AmegyCorporationSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value7.06.06.06.06.06.07.07.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.35.95.85.96.45.86.56.6
Percentage of InterestAndDividendIncomeOperating1.21.11.11.01.01.01.11.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCardFees zions:AmegyCorporationSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCardFees, zions:CaliforniaBankAndTrustSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4.04.04.03.03.04.04.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.63.93.83.03.23.83.73.8
Percentage of InterestAndDividendIncomeOperating0.70.70.70.50.50.60.60.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCardFees zions:CaliforniaBankAndTrustSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCardFees, zions:NationalBankOfArizonaSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.02.02.02.02.03.03.03.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.72.01.92.02.12.92.82.8
Percentage of InterestAndDividendIncomeOperating0.50.40.40.30.30.50.50.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCardFees zions:NationalBankOfArizonaSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCardFees, zions:NevadaStateBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.03.03.03.02.03.03.03.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.72.92.93.02.12.92.82.8
Percentage of InterestAndDividendIncomeOperating0.50.50.50.50.30.50.50.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCardFees zions:NevadaStateBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCardFees, zions:VectraBankColoradoSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1.01.01.01.01.01.01.02.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.01.01.01.11.00.91.9
Percentage of InterestAndDividendIncomeOperating0.20.20.20.20.20.20.20.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCardFees zions:VectraBankColoradoSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCardFees, zions:ZionsBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1513131211121313
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.512.712.511.911.711.512.112.3
Percentage of InterestAndDividendIncomeOperating2.62.32.32.11.81.92.01.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCardFees zions:ZionsBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCommercialAccountFees, zions:AmegyCorporationSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value10.09.09.09.010.09.09.08.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.08.88.78.910.68.78.47.5
Percentage of InterestAndDividendIncomeOperating1.81.61.61.51.71.41.41.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCommercialAccountFees zions:AmegyCorporationSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCommercialAccountFees, zions:CaliforniaBankAndTrustSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6.06.05.06.05.06.06.06.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.45.94.85.95.35.85.65.7
Percentage of InterestAndDividendIncomeOperating1.11.10.91.00.81.00.90.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCommercialAccountFees zions:CaliforniaBankAndTrustSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCommercialAccountFees, zions:CommerceBankOfWashingtonSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1.01.00.00.01.01.01.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.00.00.01.11.00.90.9
Percentage of InterestAndDividendIncomeOperating0.20.20.00.00.20.20.20.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCommercialAccountFees zions:CommerceBankOfWashingtonSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCommercialAccountFees, zions:NevadaStateBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.02.02.02.01.02.02.02.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.82.01.92.01.11.91.91.9
Percentage of InterestAndDividendIncomeOperating0.40.40.40.30.20.30.30.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCommercialAccountFees zions:NevadaStateBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCommercialAccountFees, zions:VectraBankColoradoSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.02.01.02.01.02.01.02.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.82.01.02.01.11.90.91.9
Percentage of InterestAndDividendIncomeOperating0.40.40.20.30.20.30.20.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCommercialAccountFees zions:VectraBankColoradoSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesCommercialAccountFees, zions:ZionsBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value111110.01110.0111110.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.910.89.610.910.610.610.39.4
Percentage of InterestAndDividendIncomeOperating1.92.01.81.91.71.81.71.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesCommercialAccountFees zions:ZionsBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesOtherCustomerRelatedFees, zions:AmegyCorporationSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1.01.00.0-3.02.02.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.00.0-3.02.11.90.0
Percentage of InterestAndDividendIncomeOperating0.20.20.0-0.50.30.30.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesOtherCustomerRelatedFees zions:AmegyCorporationSegment0.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesOtherCustomerRelatedFees, zions:CaliforniaBankAndTrustSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1.01.00.0-2.01.02.01.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.00.0-2.01.11.90.90.9
Percentage of InterestAndDividendIncomeOperating0.20.20.0-0.30.20.30.20.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesOtherCustomerRelatedFees zions:CaliforniaBankAndTrustSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesOtherCustomerRelatedFees, zions:ZionsBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.01.00.01.02.02.00.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.00.01.02.11.90.00.9
Percentage of InterestAndDividendIncomeOperating0.40.20.00.20.30.30.00.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesOtherCustomerRelatedFees zions:ZionsBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesRetailAndBusinessBankingFees, zions:AmegyCorporationSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4.04.04.04.03.04.04.05.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.63.93.84.03.23.83.74.7
Percentage of InterestAndDividendIncomeOperating0.70.70.70.70.50.60.60.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesRetailAndBusinessBankingFees zions:AmegyCorporationSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesRetailAndBusinessBankingFees, zions:NevadaStateBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.03.02.02.02.03.03.03.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.72.91.92.02.12.92.82.8
Percentage of InterestAndDividendIncomeOperating0.50.50.40.30.30.50.50.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesRetailAndBusinessBankingFees zions:NevadaStateBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesRetailAndBusinessBankingFees, zions:VectraBankColoradoSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1.01.01.01.01.01.02.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.01.01.01.11.01.90.9
Percentage of InterestAndDividendIncomeOperating0.20.20.20.20.20.20.30.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesRetailAndBusinessBankingFees zions:VectraBankColoradoSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesRetailAndBusinessBankingFees, zions:ZionsBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6.05.06.05.05.05.05.06.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.44.95.85.05.34.84.75.7
Percentage of InterestAndDividendIncomeOperating1.10.91.10.90.80.80.80.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesRetailAndBusinessBankingFees zions:ZionsBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesWealthManagementAndTrustFees, zions:AmegyCorporationSegment


Revenue
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value3.04.04.03.03.03.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.93.84.02.92.82.8
Percentage of InterestAndDividendIncomeOperating0.50.70.70.50.50.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesWealthManagementAndTrustFees zions:AmegyCorporationSegment0.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesWealthManagementAndTrustFees, zions:CaliforniaBankAndTrustSegment


Revenue
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value1.02.01.01.01.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.91.01.00.90.9
Percentage of InterestAndDividendIncomeOperating0.20.40.20.20.20.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesWealthManagementAndTrustFees zions:CaliforniaBankAndTrustSegment0.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesWealthManagementAndTrustFees, zions:NevadaStateBankSegment


Revenue
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value1.00.01.01.00.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.00.01.01.00.00.9
Percentage of InterestAndDividendIncomeOperating0.20.00.20.20.00.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesWealthManagementAndTrustFees zions:NevadaStateBankSegment0.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesWealthManagementAndTrustFees, zions:ZionsBankSegment


Revenue
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value5.07.06.04.05.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.96.75.93.84.73.8
Percentage of InterestAndDividendIncomeOperating0.91.21.00.60.80.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesWealthManagementAndTrustFees zions:ZionsBankSegment0.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesWealthManagementFees, zions:AmegyCorporationSegment


Revenue
Period End2021-06-302020-06-30
Value3.02.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.72.1
Percentage of InterestAndDividendIncomeOperating0.50.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesWealthManagementFees zions:AmegyCorporationSegment0.00.0

us-gaap:OperatingSegments, zions:ProductsAndServicesWealthManagementFees, zions:NationalBankOfArizonaSegment


Revenue
Period End2021-06-30
Value1.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.9
Percentage of InterestAndDividendIncomeOperating0.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesWealthManagementFees zions:NationalBankOfArizonaSegment0.0

us-gaap:OperatingSegments, zions:ProductsAndServicesWealthManagementFees, zions:ZionsBankSegment


Revenue
Period End2021-06-302020-06-30
Value5.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.54.3
Percentage of InterestAndDividendIncomeOperating0.90.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ProductsAndServicesWealthManagementFees zions:ZionsBankSegment0.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2524242424262525
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.523.523.123.825.525.023.423.6
Percentage of InterestAndDividendIncomeOperating4.44.34.24.14.04.23.93.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:AmegyCorporationSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1515141313161515
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.514.713.512.913.815.414.014.2
Percentage of InterestAndDividendIncomeOperating2.62.72.52.22.22.62.32.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:CaliforniaBankAndTrustSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1.01.00.01.01.01.01.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.00.01.01.11.00.90.9
Percentage of InterestAndDividendIncomeOperating0.20.20.00.20.20.20.20.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:CommerceBankOfWashingtonSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value8.07.07.07.06.08.08.08.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.26.96.76.96.47.77.57.5
Percentage of InterestAndDividendIncomeOperating1.41.21.21.21.01.31.21.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:NationalBankOfArizonaSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value9.09.08.08.06.09.08.09.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.18.87.77.96.48.77.58.5
Percentage of InterestAndDividendIncomeOperating1.61.61.41.41.01.41.21.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:NevadaStateBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value5.05.04.05.04.05.05.05.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.54.93.85.04.34.84.74.7
Percentage of InterestAndDividendIncomeOperating0.90.90.70.90.70.80.80.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:VectraBankColoradoSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ZionsBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3935363531343434
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.134.334.634.733.032.731.832.1
Percentage of InterestAndDividendIncomeOperating6.86.26.36.05.25.55.35.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ZionsBankSegment0.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

zions:ProductsAndServicesCapitalMarketsAndForeignExchangeFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.02.03.03.03.03.04.03.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.82.02.93.03.22.93.72.8
Percentage of InterestAndDividendIncomeOperating0.40.40.50.50.50.50.60.4
Percentage of InterestAndDividendIncomeOperating zions:ProductsAndServicesCapitalMarketsAndForeignExchangeFees0.00.00.00.00.00.00.00.0

zions:ProductsAndServicesCardFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3329302825303232
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax29.728.428.827.726.628.829.930.2
Percentage of InterestAndDividendIncomeOperating5.85.25.34.84.24.84.94.7
Percentage of InterestAndDividendIncomeOperating zions:ProductsAndServicesCardFees0.00.00.00.00.00.00.00.0

zions:ProductsAndServicesCommercialAccountFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3432323230313131
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax30.631.430.831.731.929.829.029.2
Percentage of InterestAndDividendIncomeOperating6.05.75.65.55.05.04.84.6
Percentage of InterestAndDividendIncomeOperating zions:ProductsAndServicesCommercialAccountFees0.00.00.00.00.00.00.00.0

zions:ProductsAndServicesOtherCustomerRelatedFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value13116.07.012115.05.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.710.85.86.912.810.64.74.7
Percentage of InterestAndDividendIncomeOperating2.32.01.11.22.01.80.80.7
Percentage of InterestAndDividendIncomeOperating zions:ProductsAndServicesOtherCustomerRelatedFees0.00.00.00.00.00.00.00.0

zions:ProductsAndServicesRetailAndBusinessBankingFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1817181715192020
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.216.717.316.816.018.318.718.9
Percentage of InterestAndDividendIncomeOperating3.23.03.22.92.53.13.13.0
Percentage of InterestAndDividendIncomeOperating zions:ProductsAndServicesRetailAndBusinessBankingFees0.00.00.00.00.00.00.00.0

zions:ProductsAndServicesWealthManagementAndTrustFees


Revenue
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value11151410.01515
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.814.413.99.614.014.2
Percentage of InterestAndDividendIncomeOperating2.02.62.41.62.32.2
Percentage of InterestAndDividendIncomeOperating zions:ProductsAndServicesWealthManagementAndTrustFees0.00.00.00.00.00.0

zions:ProductsAndServicesWealthManagementFees


Revenue
Period End2021-06-302020-06-30
Value119.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.99.6
Percentage of InterestAndDividendIncomeOperating1.91.5
Percentage of InterestAndDividendIncomeOperating zions:ProductsAndServicesWealthManagementFees0.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value139133138139130143133140
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating24.423.724.223.921.823.020.620.7

us-gaap:Revenues us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.05.05.01812149.013
Percentage of Revenues2.23.83.612.99.29.86.89.3
Percentage of InterestAndDividendIncomeOperating0.50.90.93.12.02.31.41.9
Percentage of InterestAndDividendIncomeOperating zions:CorporateReconcilingItemsAndEliminations0.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3432333232353337
Percentage of Revenues24.524.123.923.024.624.524.826.4
Percentage of InterestAndDividendIncomeOperating6.05.75.85.55.45.65.15.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:AmegyCorporationSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2423272119242422
Percentage of Revenues17.317.319.615.114.616.818.015.7
Percentage of InterestAndDividendIncomeOperating4.24.14.73.63.23.93.73.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:CaliforniaBankAndTrustSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.01.01.01.01.01.01.01.0
Percentage of Revenues1.40.80.70.70.80.70.80.7
Percentage of InterestAndDividendIncomeOperating0.40.20.20.20.20.20.20.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:CommerceBankOfWashingtonSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value10.01110.09.010.0111110.0
Percentage of Revenues7.28.37.26.57.77.78.37.1
Percentage of InterestAndDividendIncomeOperating1.82.01.81.51.71.81.71.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:NationalBankOfArizonaSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value12131210.010.0111111
Percentage of Revenues8.69.88.77.27.77.78.37.9
Percentage of InterestAndDividendIncomeOperating2.12.32.11.71.71.81.71.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:NevadaStateBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value8.08.08.08.08.08.07.07.0
Percentage of Revenues5.86.05.85.86.25.65.35.0
Percentage of InterestAndDividendIncomeOperating1.41.41.41.41.31.31.11.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:VectraBankColoradoSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ZionsBankSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4640424038393739
Percentage of Revenues33.130.130.428.829.227.327.827.9
Percentage of InterestAndDividendIncomeOperating8.17.17.46.96.46.35.75.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ZionsBankSegment0.00.00.00.00.00.00.00.0

Revenues Net Of Interest Expense

us-gaap:RevenuesNetOfInterestExpense

us-gaap:RevenuesNetOfInterestExpense


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value760714717713680682711715
Percentage of RevenuesNetOfInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating133.3127.0125.6122.7114.3109.6109.9105.6

us-gaap:RevenuesNetOfInterestExpense us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value734637406.0113223
Percentage of RevenuesNetOfInterestExpense9.66.45.25.60.91.64.53.2
Percentage of InterestAndDividendIncomeOperating12.88.26.56.91.01.84.93.4
Percentage of InterestAndDividendIncomeOperating zions:CorporateReconcilingItemsAndEliminations0.00.00.00.00.00.00.00.0

us-gaap:RevenuesNetOfInterestExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value152148151153157156154160
Percentage of RevenuesNetOfInterestExpense20.020.721.121.523.122.921.722.4
Percentage of InterestAndDividendIncomeOperating26.726.326.426.326.425.123.823.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:AmegyCorporationSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value158155160152146149150150
Percentage of RevenuesNetOfInterestExpense20.821.722.321.321.521.821.121.0
Percentage of InterestAndDividendIncomeOperating27.727.628.026.224.524.023.222.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:CaliforniaBankAndTrustSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1614141415131414
Percentage of RevenuesNetOfInterestExpense2.12.02.02.02.21.92.02.0
Percentage of InterestAndDividendIncomeOperating2.82.52.52.42.52.12.22.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:CommerceBankOfWashingtonSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6463656364656566
Percentage of RevenuesNetOfInterestExpense8.48.89.18.89.49.59.19.2
Percentage of InterestAndDividendIncomeOperating11.211.211.410.810.810.510.09.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:NationalBankOfArizonaSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4950484747464849
Percentage of RevenuesNetOfInterestExpense6.47.06.76.66.96.76.86.9
Percentage of InterestAndDividendIncomeOperating8.68.98.48.17.97.47.47.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:NevadaStateBankSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4342424242414041
Percentage of RevenuesNetOfInterestExpense5.75.95.95.96.26.05.65.7
Percentage of InterestAndDividendIncomeOperating7.57.57.47.27.16.66.26.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:VectraBankColoradoSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, zions:ZionsBankSegment


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value205196200202203201208212
Percentage of RevenuesNetOfInterestExpense27.027.527.928.329.929.529.329.7
Percentage of InterestAndDividendIncomeOperating36.034.935.034.834.132.332.131.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments zions:ZionsBankSegment0.00.00.00.00.00.00.00.0

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
Value8720885121814797835776447714676917270361700656919568746667316645766481662886556465446654636323961038596425917959669584105836557555572085545855111560805603155188549045411055511530875340752896531495153151361508075103451047521475171251123
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

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
Value7917577188735937068968872639956181962852624666160761168591785883658837586095780357697577335560453359520165155452162507725083550101498394813648411494944956648855480444775949463471684691746509461654461244448440634438744553457264585645412
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 Assets90.890.790.390.290.189.589.489.389.289.089.088.788.588.588.488.288.288.287.987.487.287.187.486.987.187.087.186.887.888.388.588.587.588.389.188.987.887.986.986.686.586.787.087.387.788.788.8

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
Value8720885121814797835776447714676917270361700656919568746667316645766481662886556465446654636323961038596425917959669584105836557555572085545855111560805603155188549045411055511530875340752896531495153151361508075103451047521475171251123
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

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value80337933788676687575747273537509759975887578767964646332686063556052592164916389698569206914674566486495642158425692
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.29.39.79.89.910.510.610.710.811.011.011.611.511.512.511.710.911.212.212.113.113.413.513.313.012.712.311.311.1

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value-2.0-2.0-2.0-1.0-1.0-14.0-14.0-21.0-21.0
Percentage of StockholdersEquity-0.0-0.0-0.0-0.0-0.0-0.2-0.2-0.3-0.3
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value4957697686972841-1.0
Percentage of StockholdersEquity0.60.70.91.01.11.30.40.5-0.0
Percentage of Assets0.10.10.10.10.10.10.00.1-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value128932582572701762929-228.0
Percentage of StockholdersEquity1.61.23.33.43.62.40.40.4-3.0
Percentage of Assets0.10.10.30.30.40.20.00.0-0.3
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value175148325332355259434925-122.0-250.0-139.0
Percentage of StockholdersEquity2.21.94.14.34.73.50.60.70.3-1.6-3.3-1.8
Percentage of Assets0.20.20.40.40.50.40.10.10.0-0.2-0.4-0.2
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value25652653268626802675266827353002327135413806
Percentage of StockholdersEquity31.933.434.135.035.335.737.240.043.046.750.2
Percentage of Assets2.93.13.33.43.53.74.04.34.75.15.5
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value440566566566566566566566566566566566
Percentage of StockholdersEquity5.57.17.27.47.57.67.77.57.47.57.57.4
Percentage of Assets0.50.70.70.70.70.80.80.80.80.80.80.9
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value485345664309409039793979400938923737360334562807
Percentage of StockholdersEquity60.457.654.653.352.553.354.551.849.247.545.636.6
Percentage of Assets5.65.45.35.25.25.65.85.55.35.25.04.2
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

Tier One Risk Based Capital

us-gaap:TierOneRiskBasedCapital

us-gaap:TierOneRiskBasedCapital


Tier
Period End2020-12-312019-12-312018-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value65796285681165806620576358836946
Percentage of TierOneRiskBasedCapital100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.19.19.911.011.610.310.613.1

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value525576543576570730705796538614548
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.70.70.70.71.01.01.10.80.90.8

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
Value257235238234229229233185184187191
Percentage of Land100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.40.40.40.40.30.30.40.4

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
Value165164145135139138133129121120119
Percentage of LeaseholdImprovementsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.20.20.20.20.20.20.2

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
Value1239123612091187117311441142114611331125112411111099109810941083106910471019986955925905873856844829811803785726720717706708709714715719726722721720719705707710
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 Assets1.41.51.51.51.51.61.71.61.61.61.61.71.71.71.71.71.61.61.61.61.61.61.51.51.51.51.51.51.51.41.31.31.31.31.31.31.31.41.41.41.41.41.41.41.41.41.4

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2020-12-312019-12-312018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value1014101410141016101410141014101410141014101410141014101410141014101410141014101410141014101410141014101510151015101510151015101510151015101510151015
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.51.51.51.51.51.51.51.61.71.71.71.71.71.71.81.81.81.81.81.81.81.81.91.81.91.91.91.92.02.02.02.02.01.92.02.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2.01.02.08.42162536506787
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.10.10.10.2

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

zions:CustomerRelationshipsAndOtherIntangibles


Finite
Period End2020-12-312019-12-312018-12-31
Value2.00.00.0
Percentage of FiniteLivedIntangibleAssetsNet100.00.00.0
Percentage of Assets0.00.00.0
Percentage of Assets zions:CustomerRelationshipsAndOtherIntangibles0.00.00.0

Intangible Assets Net Including Goodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value10151016101610161014101410141014101410141015101510151016
Percentage of IntangibleAssetsNetIncludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.21.21.31.31.41.51.41.41.51.51.51.51.5

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312013-12-312012-12-312011-12-312010-12-31
Value32226.03734367313017014912393207198231250170164180203201224304405509540
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.10.00.10.10.20.30.20.20.10.30.30.40.40.30.30.30.30.30.40.50.71.01.1

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value202204213217209211218231232
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.30.30.30.30.30.30.3

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
Value18111414163816491604156913361329133112199349641024899916950898942983112311179019218809089528948458788079261001106912081290142615071499160517211654175618141940202820312277
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 Assets2.11.72.02.12.12.21.91.91.91.81.41.41.51.41.41.41.41.41.61.81.91.51.51.51.61.71.61.51.61.41.71.81.92.22.32.72.82.83.03.33.23.53.63.83.93.94.5

Time Deposit Maturities Year One

us-gaap:TimeDepositMaturitiesYearOne

us-gaap:TimeDepositMaturitiesYearOne


Time
Period End2020-12-31
Value2239
Percentage of TimeDepositMaturitiesYearOne100.0
Percentage of Assets2.7

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
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
Value130812991336134713531795172312421236122872487938338338338338338353457069880281794410501089109211131933215822732304217323522337232622742283195418981879191319421939193420162032
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.51.61.71.82.52.51.81.81.81.11.30.60.60.60.60.60.60.80.91.21.41.41.61.81.91.92.03.53.84.14.24.04.34.24.44.34.33.73.73.73.83.83.83.73.94.0

us-gaap:LongTermDebt us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueInputsLevel2, us-gaap:CarryingReportedAmountFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value130812991336134713531723
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.51.61.71.82.5
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value133813331346133213201751
Percentage of LongTermDebt102.3102.6100.798.997.6101.6
Percentage of Assets1.51.61.71.71.72.5
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value41404644
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets0.00.00.10.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value32303938
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value23213029
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value21
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value95
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.1

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value229231240246237240246
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.4

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value265269280287
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets0.30.30.30.4

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value80337933788676687575747273537509759975887578767964646332686063556052592164916389698569206914674566486495642158425692
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.29.39.79.89.910.510.610.710.811.011.011.611.511.512.511.710.911.212.212.113.113.413.513.313.012.712.311.311.1

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value-2.0-2.0-2.0-1.0-1.0-14.0-14.0-21.0-21.0
Percentage of StockholdersEquity-0.0-0.0-0.0-0.0-0.0-0.2-0.2-0.3-0.3
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value4957697686972841-1.0
Percentage of StockholdersEquity0.60.70.91.01.11.30.40.5-0.0
Percentage of Assets0.10.10.10.10.10.10.00.1-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value128932582572701762929-228.0
Percentage of StockholdersEquity1.61.23.33.43.62.40.40.4-3.0
Percentage of Assets0.10.10.30.30.40.20.00.0-0.3
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value175148325332355259434925-122.0-250.0-139.0
Percentage of StockholdersEquity2.21.94.14.34.73.50.60.70.3-1.6-3.3-1.8
Percentage of Assets0.20.20.40.40.50.40.10.10.0-0.2-0.4-0.2
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value25652653268626802675266827353002327135413806
Percentage of StockholdersEquity31.933.434.135.035.335.737.240.043.046.750.2
Percentage of Assets2.93.13.33.43.53.74.04.34.75.15.5
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value440566566566566566566566566566566566
Percentage of StockholdersEquity5.57.17.27.47.57.67.77.57.47.57.57.4
Percentage of Assets0.50.70.70.70.70.80.80.80.80.80.80.9
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value485345664309409039793979400938923737360334562807
Percentage of StockholdersEquity60.457.654.653.352.553.354.551.849.247.545.636.6
Percentage of Assets5.65.45.35.25.25.65.85.55.35.25.04.2
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2565265326862680267526682735300232713541380640520.0
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.93.13.33.43.53.74.04.34.75.15.56.10.0

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
Value4853456643094090397939794009389237373603345632963139299928072700257224352321221121102031196618941823183617691711164015421473154013381290120311701110106010369949319048891001108312201308
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 Assets5.65.45.35.25.25.65.85.55.35.25.04.94.74.54.24.13.93.73.73.63.53.43.33.23.13.23.13.13.02.72.62.82.42.42.22.22.12.02.01.91.81.81.72.02.12.42.6

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value175148325332355259434925-122.0-250.0-361.0-315.0-267.0-139.0-57.0-49.0-111.0-121.58110.023-11.653-54.612-16.975-35.172-114.909-128.041-110.927-136.837-145.462-192.101-384.503-374.556-406.903-446.157-534.738-576.147-571.567-592.084-588.834-504.491-499.163-461.296-452.553-433.02-428.177-436.899-98.958
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.40.40.50.40.10.10.0-0.2-0.4-0.5-0.5-0.4-0.2-0.1-0.1-0.2-0.20.00.0-0.0-0.1-0.0-0.1-0.2-0.2-0.2-0.2-0.3-0.3-0.7-0.7-0.8-0.8-1.0-1.1-1.1-1.1-1.1-1.0-1.0-0.9-0.9-0.8-0.8-0.90.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-201.0484171150245153351126262-42.035138716327512522719538013322811222148212858811619812126822723112101639326024826521534626932937288670
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-35.386.129.925.841.224.654.318.638.3-6.253.561.326.946.722.240.834.973.826.646.52.446.931.446.618.719.825.343.12.727.116.957.663.143.432.818.250.347.449.338.962.048.757.564.015.1115.6

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1525.0-3998.0-3023.0-1880.0-5176.0-2125.0978112-802.087-1967.0-410.0100-429.0-842.0-24.0-173.0-2880.0-1957.092-1456.54-158.745136-1156.289-271.23-810.035-413.164-1444.275-1147.836117575-882.955-240.842-669.046399-1591.029313-567.889-63.88-1604.309-260.786-655.84428-501.722753-528.833-1648.189
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-267.5-711.4-529.4-323.6-869.9-341.6151.216.5-117.312.9-299.8-65.016.5-72.8-149.8-4.3-31.0-559.2-390.0-296.8-32.628.7-244.2-59.5-177.9-92.1-312.6-249.4253.816.2-180.2-50.9-135.682.5-319.360.9-109.6-12.2-297.4-47.0-117.45.2-87.4129.4-90.6-284.1

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value16753547281917364771199754220542-123.0171372-265.076724-143.0-107.0232920081221189-639.4011203-96.8367622031584154-1145.266-36.224610150612-1523.0392208-471.145349-326.3791460112395-272.70235-1133.784464652
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating293.9631.1493.7298.8801.8321.183.83.079.2-18.2261.111.4-43.712.9128.8-25.7-19.2452.2400.2248.938.9-134.6254.1-21.2167.545.3343.033.5-247.3-7.7124.531.8124.1-314.2443.3-91.567.5-62.3270.720.370.8-49.46.2-194.879.5112.5

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-51.033-33.06.0-160.025-91.02582.0-78.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-8.95.9-5.81.0-26.94.0-14.138.10.3-11.6

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
Value387039-3.0-48.0-46.00.0-5.0-12.0154.0-6.0-11.013150-4.0-5.0130.3711.976-6.109-4.6821-10.027-44.4313.4023.572.96-58.8778-59.5055.832-7.7261.282-15.7256.458-0.6319-13.66241335344-21.039-15.795-36.163
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-201.0484171150245153351126262-42.035138716327512522719538013322811222148212858811619812126822723112101639326024826521534626932937288670
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-35.386.129.925.841.224.654.318.638.3-6.253.561.326.946.722.240.834.973.826.646.52.446.931.446.618.719.825.343.12.727.116.957.663.143.432.818.250.347.449.338.962.048.757.564.015.1115.6

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value354322284175661418322219821395119101-41.47211183110581099189891097252-72.2-47.325-112.993-60.21
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.157.349.730.111.12.328.332.828.931.620.825.821.6-8.523.616.822.811.721.317.717.116.519.713.09.6-12.6-8.1-19.4-10.4

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1111121210.02.00.0-1.0
Percentage of NetIncomeLoss3.13.44.26.915.214.30.0-0.5
Percentage of InterestAndDividendIncomeOperating1.92.02.12.11.70.30.0-0.1
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3543222841756614183222
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.157.349.730.111.12.328.332.8
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value5.0144.04.05.0134.05.04.0144.04.05.0134.04.05.0124.06.05.011
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1525.0-3998.0-3023.0-1880.0-5176.0-2125.0978112-802.087-1967.0-410.0100-429.0-842.0-24.0-173.0-2880.0-1957.092-1456.54-158.745136-1156.289-271.23-810.035-413.164-1444.275-1147.836117575-882.955-240.842-669.046399-1591.029313-567.889-63.88-1604.309-260.786-655.84428-501.722753-528.833-1648.189
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-267.5-711.4-529.4-323.6-869.9-341.6151.216.5-117.312.9-299.8-65.016.5-72.8-149.8-4.3-31.0-559.2-390.0-296.8-32.628.7-244.2-59.5-177.9-92.1-312.6-249.4253.816.2-180.2-50.9-135.682.5-319.360.9-109.6-12.2-297.4-47.0-117.45.2-87.4129.4-90.6-284.1

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
Value31534841542823343525393626283639445052515140513833333626357625202615201517151522192020251715
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value16753547281917364771199754220542-123.0171372-265.076724-143.0-107.0232920081221189-639.4011203-96.8367622031584154-1145.266-36.224610150612-1523.0392208-471.145349-326.3791460112395-272.70235-1133.784464652
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating293.9631.1493.7298.8801.8321.183.83.079.2-18.2261.111.4-43.712.9128.8-25.7-19.2452.2400.2248.938.9-134.6254.1-21.2167.545.3343.033.5-247.3-7.7124.531.8124.1-314.2443.3-91.567.5-62.3270.720.370.8-49.46.2-194.879.5112.5

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2020-12-312020-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.00.01620.00.00.00.00.00.01533612810410123111448.185278342361242610.153551181107.6042550.1410.1418.1910.1750.1560.1237.999650.061
Percentage of RepaymentsOfLongTermDebt0.00.0100.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments Of Dividends

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


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
Value63666465646664696166646855494034262926302227282729232423242325343524243235404040403434292122
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Dividends

us-gaap:Dividends

us-gaap:Dividends


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value6564666466646667636466665747423230
Percentage of Dividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value101500.00.01.075276275275276250186126122115115525052455.01.06.6810.0
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:DebtInstrumentInterestRateStatedPercentage


Debt
Period End2023-09-152018-11-152013-10-312013-09-12
Value0.0390.0420.0570.07
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-30
Value22.221.718.60.1950.1250.2290.2270.2230.2360.2210.2270.3420.3230.2450.3370.3460.3140.28760.2830.3570.3564
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value38.2634.7729.8527.0626.4427.331.635.5438.8743.0647.3753.6157.53
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

zions:ExercisePriceRangeFiftyPointZeroZeroToFiftyFivePointSixEight


Share
Period End2020-12-31
Value52.9
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice138.3

zions:ExercisePriceRangeFortyFivePointZeroZeroToFortyNinePointNineNine


Share
Period End2020-12-31
Value45.65
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice119.3

zions:ExercisePriceRangeFortyPointZeroZeroToFortyFourPointNineNine


Share
Period End2020-12-31
Value44.1
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice115.3

zions:ExercisePriceRangeTwentyFivePointZeroZeroToTwentyNinePointNineNine


Share
Period End2020-12-312019-12-31
Value28.5328.36
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice74.681.6

zions:ExercisePriceRangeZeroPointThreeTwoToNineteenPointNineNine


Share
Period End2020-12-312019-12-31
Value6.224.89
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice16.314.1

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value63163.0273195182205234240332418445498
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value360310325275455437202213465219239187637367367381823447479476954493481540585551
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value11148.06.04.2895.4483.2552.3852.38513151617
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt


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
Value-291.0-540.0320393-2906.017124674-1445.01080-709.01873-377.0-709.0-10.0852-718.02052311-288.29284538-114.799744523-40.62652-66.603-21.436-60.5116617-70.154-25.853-126.908-392.564318-168.831-63.46-34.498-190.67580-85.817-175.14611229
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdvertisingExpense

us-gaap:AdvertisingExpense


Advertising
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
Value4.05.06.07.03.03.02.06.05.05.06.08.07.05.05.06.06.05.05.2625.9855.2685.6285.6926.1366.5116.9755.8056.0946.8036.3985.5716.0915.8075.8935.9697.3266.6185.8077.786.5115.9626.9117.0995.5755.7726.374
Percentage of AdvertisingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths


Cash
Period End2021-06-302021-03-312020-12-31
Value-9.0571.0
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths100.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:ConcentrationRiskPercentage1

us-gaap:RevenueFromContractWithCustomer, us-gaap:ProductConcentrationRisk


Concentration
Period End2021-03-31
Value76.0
Percentage of ConcentrationRiskPercentage1100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ProductOrService, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

zions:ProductsAndServicesInterestIncomeOnLoansAndSecurities, us-gaap:RevenueFromContractWithCustomer, us-gaap:ProductConcentrationRisk


Concentration
Period End2021-06-30
Value73.0
Percentage of ConcentrationRiskPercentage10.0

us-gaap:DebtAndEquitySecuritiesGainLoss

us-gaap:DebtAndEquitySecuritiesGainLoss


Debt
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
Value6311124.0-4.0-6.03.02.0-3.01.02.0-1.01.00.01.05.0
Percentage of DebtAndEquitySecuritiesGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets


Defined
Period End2020-09-302020-06-302019-09-302019-06-302017-03-312016-03-31
Value0.01.02.02.03.03.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets0.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanInterestCost


Defined
Period End2020-09-302020-06-302019-09-302019-06-302017-03-312016-03-31
Value001000000.01000000.02000000.02000000.0
Percentage of DefinedBenefitPlanInterestCost0.00.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost


Defined
Period End2020-09-302020-06-302019-06-302017-03-312016-03-31
Value0.0270.01.01.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost0.0100.00.0100.0100.0

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1


Defined
Period End2020-09-302020-06-302019-09-302019-06-302017-03-312016-09-302016-03-31
Value0-28000000.0-1000000.00-1000000.02600000.00
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements10.0100.0100.00.0100.0100.00.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-8.0-3.011121845455049445249494348474737-12.8054945404140353431333132-3.27742454647476257525210589164659646
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DerivativeGainLossOnDerivativeNet


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-5.0189.08.0-12.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DistributedEarnings

us-gaap:DistributedEarnings


Distributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value5656555656575659545656584739322416
Percentage of DistributedEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock

us-gaap:DividendsCommonStock


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
Value565756565656576054565758474031261715161612121212128.1768.1778.1667.4377.4367.42725-11.0721.8331.8461.8421.8611.8431.8831.8251.8291.8241.781.7241.6481.498
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5657565656-56.0395-60.0-54.05657-58.0-47.04031261715161612121212128.1768.1778.1667.4377.4367.42725-11.0721.8331.8461.8421.8611.8431.8831.8251.8291.8241.781.7241.6481.498
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0-100.0693.0-100.0-100.0100.0100.0-100.0-100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPreferredStock

us-gaap:DividendsPreferredStock


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
Value9.08.09.09.09.08.09.08.010.07.09.08.010.07.010.07.01310.012101311141615161516152517127-72.439222230333839383832-172.429282021
Percentage of DividendsPreferredStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsPreferredStock us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9.08.09.09.09.08.09.08.010.07.09.08.010.07.010.07.01310.012101311141615161516152517127-72.439222247366444434338-207.681332526
Percentage of DividendsPreferredStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0153.7108.5164.8114.2114.2113.9116.1120.4118.2124.6123.0

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
Value32323032323234343532313032333432323233293032313031293028272727262626272727262726262524252524
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:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss

us-gaap:PrivateEquityFunds, us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-06-302020-03-31
Value681.0-4.0-20.0
Percentage of FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-4.0-1.03.00.00.0150.0-9.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.00.00.0100.00.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

us-gaap:PrivateEquityFunds, us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2.04.02.03.02.01.05.01.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

us-gaap:PrivateEquityFunds, us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-06-302020-03-31
Value4.02.00.09.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.0100.00.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3 us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

us-gaap:PrivateEquityFunds, us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-30
Value77
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3100.0

us-gaap:FairValueOptionChangesInFairValueGainLoss1 us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueOptionChangesInFairValueGainLoss1

us-gaap:FairValueMeasurementsNonrecurring


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1000000.01000000.0-18000000.01000000.01000000.01000000.09000000.0-1000000.0
Percentage of FairValueOptionChangesInFairValueGainLoss1100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueOptionChangesInFairValueGainLoss1 us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsNonrecurring, zions:CollateralDependentLoans


Fair
Period End2020-12-312020-09-30
Value-15000000.01000000.0
Percentage of FairValueOptionChangesInFairValueGainLoss183.3100.0

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
Value6.07.07.07.07.05.06.07.06.06.06.01814131315131211119.587.1549.1948.58.6098.1198.0318.2048.0177.9228.7899.395109.711101110101212152425252624
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:FinancingReceivableAccruedInterestWriteoff

us-gaap:FinancingReceivableAccruedInterestWriteoff


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value5.04.04.06.05.04.0
Percentage of FinancingReceivableAccruedInterestWriteoff100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAccruedInterestWriteoff us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value4.03.03.05.04.04.0
Percentage of FinancingReceivableAccruedInterestWriteoff80.075.075.083.380.0100.0

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.01.00.01.01.0
Percentage of FinancingReceivableAccruedInterestWriteoff20.025.00.016.720.0

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-2.08.01552317.0221.0
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-2.08.01550286.018-1.0
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery100.0100.0100.096.290.385.781.8-100.0

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2020-12-312020-09-302019-12-312019-09-30
Value0.01.01.0-1.0
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery0.01.94.5-100.0

us-gaap:ConsumerPortfolioSegment


Financing
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.01.03.01.03.03.0
Percentage of FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery0.01.99.714.313.6300.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value10.0136.06.05.06.010.010.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value7.010.03.04.03.04.06.07.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery70.076.950.066.760.066.760.070.0

us-gaap:ConsumerPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.03.03.02.02.02.02.02.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery30.023.150.033.340.033.320.020.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value8.021215836133211
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value5.01818543110.0246.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs62.585.785.793.186.176.975.054.5

us-gaap:CommercialRealEstatePortfolioSegment


Financing
Period End2020-12-312020-09-302019-12-31
Value0.01.03.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs0.01.79.4

us-gaap:ConsumerPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.03.03.03.05.03.05.05.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs37.514.314.35.213.923.115.645.5

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2


Financing
Period End2021-06-302021-03-312020-12-31
Value4441430
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment2100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1


Financing
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value-3.03.02.01.0-2.01.04.05.00.03.08.02.03.01.03.018-3.8276.676196.7460.930.6042.1862.424-0.3222.2650.8370.3272.190.8825.5521.3160.6152.3368.284
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

zions:FinancingReceivableNonaccruing


Financing
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-30
Value3.0-3.03.02.0-2.01.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment10.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment

zions:FinancingReceivableNonaccruing, us-gaap:CommercialPortfolioSegment


Financing
Period End2020-12-312019-12-31
Value-4.0-2.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1133.3100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

zions:FinancingReceivableNonaccruing, us-gaap:CommercialPortfolioSegment, zions:CommercialAndIndustrial


Financing
Period End2021-03-312020-12-312020-09-302020-03-312019-09-30
Value1.0-4.03.01.01.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment10.0133.3100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Financing
Period End2020-12-312019-12-31
Value-4.0-2.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1133.3100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:CommercialPortfolioSegment, zions:CommercialAndIndustrial


Financing
Period End2020-12-312020-09-302019-09-30
Value-4.03.01.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1133.3100.0100.0

us-gaap:GainLossOnSaleOfNotesReceivable

us-gaap:GainLossOnSaleOfNotesReceivable


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value7.01110.01813135.08.0
Percentage of GainLossOnSaleOfNotesReceivable100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainsLossesOnSalesOfOtherRealEstate

us-gaap:GainsLossesOnSalesOfOtherRealEstate


Gains
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.01.01.02.00.00.00.00.0-1.00.00.0-3.9930.1370.5271.329-1.1110.040.445-0.374-0.8750.266-1.6072.3491.824-0.439-0.053-3.516-0.309-5.509-7.832-9.013-15.55-14.363-19.75-23.936-47.038-38.146-27.112
Percentage of GainsLossesOnSalesOfOtherRealEstate0.0100.0100.0100.00.00.00.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainsLossesOnSalesOfOtherRealEstate us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Gains
Period End2020-12-312020-09-30
Value0.01.0
Percentage of GainsLossesOnSalesOfOtherRealEstate0.0100.0

us-gaap:GainsLossesOnSalesOfOtherRealEstate us-gaap:FinancialInstrument

zions:OtherRealEstateOwnedProperties


Gains
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-06-30
Value1.01.00.01.01.01.00.02.00.01.00.0
Percentage of GainsLossesOnSalesOfOtherRealEstate0.00.00.0100.00.00.00.0100.00.00.00.0

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
Value225242002560140981664339451807-203.0435315204618347522-278.0-1099.02412386576406-486.2341453-16.9778132751581594-861.472170692653525-1642.8782360612612521512171598-342.542-25.116-1053.713-81.816257
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:IncreaseDecreaseInDerivativeAssets us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:IncreaseDecreaseInDerivativeAssets

zions:AssetHedgePayFixedInterestRateSwap, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Increase
Period End2021-06-302021-03-31
Value-25.048
Percentage of IncreaseDecreaseInDerivativeAssets100.0100.0

us-gaap:IncreaseDecreaseInDerivativeLiabilities us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:IncreaseDecreaseInDerivativeLiabilities

us-gaap:InterestRateSwap, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Increase
Period End2021-06-302021-03-31
Value12-35.0
Percentage of IncreaseDecreaseInDerivativeLiabilities100.0100.0

us-gaap:IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1 us-gaap:DerivativeInstrumentRisk

us-gaap:IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1

us-gaap:InterestRateSwap


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-12.0359.03.0-4.0-71.014-1.0-12.0
Percentage of IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:AssetHedgePayFixedInterestRateSwap


Increase
Period End2021-06-302021-03-312020-12-312020-09-30
Value25-48.0-17.0-11.0
Percentage of IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge1-208.3-137.1-188.9-366.7

us-gaap:IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments1 us-gaap:DerivativeInstrumentRisk

us-gaap:IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments1

us-gaap:InterestRateSwap


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value12-35.0-9.0-3.04.071-14.01.012
Percentage of IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments1100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:AssetHedgePayFixedInterestRateSwap


Increase
Period End2021-06-302021-03-312020-12-312020-09-30
Value-25.0481711
Percentage of IncreaseDecreaseInFairValueOfInterestRateFairValueHedgingInstruments1-208.3-137.1-188.9-366.7

us-gaap:IncreaseDecreaseInLoansHeldForSale

us-gaap:IncreaseDecreaseInLoansHeldForSale


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-9.03.08.0-11.0-5.0187.038381.0-41.0-2.01.033-26.018-53.0-36.0-10.1621235-38.5669.241-23.31423-3.5177.425-44.16239-41.19556-49.696-33.45-89.9962577-50.464-20.91340-21.237-41.041-28.471202314-24.981
Percentage of IncreaseDecreaseInLoansHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOperatingLiabilities

us-gaap:IncreaseDecreaseInOperatingLiabilities


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
Value53-54.026-2.046-13.0527.0-30.0-43.0-31.020814.0-34.084-63.042-214.49453144178.97921-61.82925663319-77.5815282.967-48.47768-10.692-11.731-18.799-7.4313329-36.824-133.994371.92336
Percentage of IncreaseDecreaseInOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value471-212.038569.012033-20.0967013-79.0100-48.08042-12.0-21.0-212.7694.477225-7.30165-31.178-32.0796542-4.67816-3.086-12.136-70.753-121.095-51.5838-21.314-38.398-50.425-147.5584-41.334-18.154-128.831-100.464112-103.373
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: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-9.0-76.067380.0-22.0-98.0132-168.0210-70.0-31.063-4.092-5.022-76.06.799-10.7715217-25.403-0.972.8991.02115-1.2410.24721-3.71911-1.8820.01114-6.5761.506-21.24-9.509-1.37-5.3977.8825.856-42.8963527
Percentage of IncreaseDecreaseInTradingSecurities100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value570562571581595622647677684675656631606589562557558515501490486474473456455448461460463467490473493484498515518523539554558552574581583580
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
Value7.09.01318235162696657483829201615141312121111121212121212121213141515161920232631343640465256
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: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
Value678677618500395290555557548572569576543582537517521466483450430410426407423418418471470417462421452447423446421426463456414363233267184189
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:InterestIncomeExpenseAfterProvisionForLoanLoss us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value7.05.08.05.09.05.02.04.0
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss1.00.71.31.02.31.70.40.7

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value16216913911510117107105
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss23.925.022.523.025.65.919.318.9

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value165168131938186124133
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss24.324.821.218.620.529.722.323.9

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value151616129.07.01415
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss2.22.42.62.42.32.42.52.7

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6762604838345756
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss9.99.29.79.69.611.710.310.1

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value49554839-3.0233836
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss7.28.17.87.8-0.87.96.86.5

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value46344116358.03337
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss6.85.06.63.28.92.85.96.6

us-gaap:OperatingSegments, zions:ZionsBankSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value167168175172125110180171
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss24.624.828.334.431.637.932.430.7

us-gaap:InterestIncomeMoneyMarketDeposits

us-gaap:InterestIncomeMoneyMarketDeposits


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
Value4.03.03.02.01.08.06.08.08.09.09.08.07.06.05.05.05.04.04.1614.9345.5647.0296.1446.0185.7855.2185.9135.4834.8885.135.9856.1755.7645.4396.0045.3495.0994.6284.3083.4823.1992.8433.4193.4872.6011.439
Percentage of InterestIncomeMoneyMarketDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value74716974808283889596938685868084847859494747373028272424242825242725
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest us-gaap:InvestmentType

us-gaap:AvailableforsaleSecurities


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value68646267747576818789867977797478787152424141312422201717172017161917
Percentage of InvestmentIncomeInterest91.990.189.990.592.591.591.692.091.692.792.591.990.691.992.592.992.991.087.986.786.487.883.479.877.574.372.172.171.074.668.368.070.168.4

us-gaap:HeldtomaturitySecurities


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3.05.05.05.05.05.04.06.06.06.05.07.06.06.06.05.05.07.05.9845.895.735.335.6885.665.8676.4546.446.4026.5286.6647.7217.7397.8467.974
Percentage of InvestmentIncomeInterest4.17.07.26.86.26.14.86.86.36.25.48.17.17.07.56.06.09.010.011.912.011.315.118.720.423.525.826.326.623.730.231.128.930.8

us-gaap:OtherTrading


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3.02.02.02.01.02.03.01.02.01.02.00.02.01.00.01.0
Percentage of InvestmentIncomeInterest4.12.82.92.71.22.43.61.12.11.02.20.02.41.20.01.2

us-gaap:InvestmentIncomeInterest us-gaap:InvestmentType, zions:TaxableVSNontaxableIncome

us-gaap:AvailableforsaleSecurities, zions:Nontaxable


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value7.07.06.06.07.06.06.07.06.06.07.06.07.0
Percentage of InvestmentIncomeInterest9.59.98.78.18.87.37.28.06.36.27.57.08.2

us-gaap:AvailableforsaleSecurities, zions:Taxable


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value61575661676970748183797370
Percentage of InvestmentIncomeInterest82.480.381.282.483.884.184.384.185.386.584.984.982.4

us-gaap:HeldtomaturitySecurities, zions:Nontaxable


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.02.02.03.02.03.02.03.04.04.03.04.03.0
Percentage of InvestmentIncomeInterest1.42.82.94.12.53.72.43.44.24.23.24.73.5

us-gaap:HeldtomaturitySecurities, zions:Taxable


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2.03.03.02.03.02.02.03.02.02.02.03.03.0
Percentage of InvestmentIncomeInterest2.74.24.32.73.82.42.43.42.12.12.23.53.5

us-gaap:OtherTrading, zions:Nontaxable


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3.02.02.02.01.02.02.01.02.01.01.00.02.0
Percentage of InvestmentIncomeInterest4.12.82.92.71.22.42.41.12.11.01.10.02.4

us-gaap:InvestmentIncomeInterest zions:TaxableVSNontaxableIncome

zions:Nontaxable


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value111110.01110.01110.01112111110.012
Percentage of InvestmentIncomeInterest14.915.514.514.912.513.412.012.512.611.511.811.614.1

zions:Taxable


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value63605963707173778385827673
Percentage of InvestmentIncomeInterest85.184.585.585.187.586.688.087.587.488.588.288.485.9

us-gaap:InvestmentIncomeNonoperating

us-gaap:InvestmentIncomeNonoperating


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8.07.07.06.03.03.0164.09.09.09.01111119.09.010.0124.0539.06.05.016117.9957.8649.8981211121311219.487.8059.356178.0287.6218.8748.8797.7
Percentage of InvestmentIncomeNonoperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value272288277269267274306273274287270264266269255253242262240242241258236242251243238245238233226229227229220220220224220216222215207207205204
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value24242524242425262525
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value428435424442430408472415424430419420428412417413405414404403381395402396404397422438406398494370451397407394401392425409416408443456430389
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:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4845367165358236
Percentage of NoninterestExpense11.210.38.516.115.18.617.48.7

us-gaap:NoninterestExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value8485868279828684
Percentage of NoninterestExpense19.619.520.318.618.420.118.220.2

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value7680807474777775
Percentage of NoninterestExpense17.818.418.916.717.218.916.318.1

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value5.06.06.05.05.06.05.05.0
Percentage of NoninterestExpense1.21.41.41.11.21.51.11.2

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3738383735364039
Percentage of NoninterestExpense8.68.79.08.48.18.88.59.4

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3636363534353635
Percentage of NoninterestExpense8.48.38.57.97.98.67.68.4

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2928292727272627
Percentage of NoninterestExpense6.86.46.86.16.36.65.56.5

us-gaap:OperatingSegments, zions:ZionsBankSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value113117114111111110120114
Percentage of NoninterestExpense26.426.926.925.125.827.025.427.5

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
Value2051691661571171341521461321321401361381381401391321321281441251161241300.421121129116124138-31.151221251217011912310698121128134113110109107
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:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value66412935-1.04.02718
Percentage of NoninterestIncome32.224.317.522.3-0.93.017.812.3

us-gaap:NoninterestIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3532343231363337
Percentage of NoninterestIncome17.118.920.520.426.526.921.725.3

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2524292219252523
Percentage of NoninterestIncome12.214.217.514.016.218.716.415.8

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.01.01.01.01.01.01.01.0
Percentage of NoninterestIncome1.00.60.60.60.90.70.70.7

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1111119.010.0111110.0
Percentage of NoninterestIncome5.46.56.65.78.58.27.26.8

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value12131210.010.0111111
Percentage of NoninterestIncome5.97.77.26.48.58.27.27.5

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value8.08.08.08.08.08.07.07.0
Percentage of NoninterestIncome3.94.74.85.16.86.04.64.8

us-gaap:OperatingSegments, zions:ZionsBankSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4639424038383739
Percentage of NoninterestIncome22.423.125.325.532.528.424.326.7

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
Value66362818117-9.0196.0-4.02.00.01.01.04.02.03.0-1.00.02.6651.9151.1422.8942.0182.4615.6930.9222.062.6270.7072.5311.9985.2434.5156.1843.3093.4952.284.0451.9562.7893.896203.665202.4413.193
Percentage of NoninterestIncomeOtherOperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncomeOtherOperatingIncome us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value63362417-12.0-10.0185.0
Percentage of NoninterestIncomeOtherOperatingIncome95.5100.085.794.4-10.3111.194.783.3

us-gaap:NoninterestIncomeOtherOperatingIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Noninterest
Period End2021-06-302020-06-302020-03-31
Value1.0-1.01.0
Percentage of NoninterestIncomeOtherOperatingIncome1.5-0.9-11.1

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1.01.02.01.00.01.01.01.0
Percentage of NoninterestIncomeOtherOperatingIncome1.52.87.15.60.0-11.15.316.7

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Noninterest
Period End2021-06-302019-12-31
Value1.00.0
Percentage of NoninterestIncomeOtherOperatingIncome1.50.0

us-gaap:OperatingSegments, zions:ZionsBankSegment


Noninterest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-1.00.00.00.0-1.00.0
Percentage of NoninterestIncomeOtherOperatingIncome-2.80.00.00.011.10.0

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
Value33333333323334343233363332312835323332332929302930292928282828282727282828272729272827292728
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:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value39-166.0-16.0-12.0107218-9.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Oci
Period End2020-12-312020-09-30
Value-22.00.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent137.5-0.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value4.0-1.05.01.00.071-15.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent10.30.6-31.2-8.30.032.6166.7

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value35-165.01.0-13.0941470.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent89.799.4-6.2108.387.967.4-0.0

us-gaap:OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal

us-gaap:OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal


Off
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-10.0-9.0-6.010.07.018-3.02.0
Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Off
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-3.0-6.0-11.014115.0-2.0
Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal30.066.7183.3140.0157.127.866.7

us-gaap:CommercialRealEstatePortfolioSegment


Off
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-7.0-3.04.0-4.0-3.011-1.02.0
Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal70.033.3-66.7-40.0-42.961.133.3100.0

us-gaap:ConsumerPortfolioSegment


Off
Period End2020-12-312020-09-302020-06-302020-03-31
Value1.00.0-1.02.0
Percentage of OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal-16.70.0-14.311.1

us-gaap:OperatingLeaseLeaseIncome

us-gaap:OperatingLeaseLeaseIncome


Operating
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
Value3.03.03.03.03.03.03.03.03.02.03.03.03.03.0
Percentage of OperatingLeaseLeaseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value12121313131313131210.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.0-4.01.0-1.07.069-12.06.030
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax


Other
Period End2021-06-302021-03-312020-09-302020-06-30
Value-12.0-20.0-17.0-4.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:InterestRateSwap, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-4.0-5.00.0-1.010.092141.024
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax33.325.00.05.9-250.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-4.0-5.00.0-1.010.09214-1.026
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax33.325.00.05.9-250.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value1111121110.02.0-2.0-1.0-1.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:InterestRateFloor, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value2.03.03.03.03.03.01.0-1.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax18.227.325.027.330.0150.0-100.0100.0

us-gaap:InterestRateSwap, us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value1312121310.01.0-1.0-2.0-1.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax118.2109.1100.0118.2100.050.050.0200.0100.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value15151516134.02.0-1.0-2.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax136.4136.4125.0145.5130.0200.0-100.0100.0200.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value27-177.0-7.0-23.096216-6.023
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2020-12-312020-09-30
Value-1.00.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent14.3-0.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-8.0-12.0-7.0-10.0-11.069-13.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-29.66.8100.043.5-11.531.9216.7

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value35-165.01.0-13.0941470.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent129.693.2-14.356.597.968.1-0.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax


Other
Period End2020-12-312020-09-302020-06-302019-06-30
Value-1.00.0130.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax100.00.0100.00.0

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value9.0-57.0-4.0-7.03171-2.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1 us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-2.0-4.0-3.0-3.0-4.023-4.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1-22.27.075.042.9-12.932.4200.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value11-53.0-1.0-4.031480.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1122.293.025.057.1100.067.6-0.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value34-164.00.0-13.0941470.019116122108-45.0-50.0-126.0-67.0-8.06112-128.301-10.7113232-27.86911-7.2940.486-18.51918107177-14.159294856436.431
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value6718138.06.02.0-5.0132.08.07.04.06.08.0-6.010.010.014-5.665132.973-13.997-7.12150.073.549375.745-9.91-2.336-17.9245.362-4.29915-5.57213-3.544-21.9162.9820.2612.734-2.2-0.861-24.142
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value58444776734572515151504949496454545152605050735653587466667279647878766767637669726674836254
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:OtherPreferredStockDividendsAndAdjustments

us-gaap:OtherPreferredStockDividendsAndAdjustments


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value9.08.09.08.09.0-8.09.0-8.0-9.0-8.09.0-8.0-10.0-7.010.0-8.0-12.0-10.084-10.0
Percentage of OtherPreferredStockDividendsAndAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForOriginationAndPurchasesOfLoansHeldForSale

us-gaap:PaymentsForOriginationAndPurchasesOfLoansHeldForSale


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value4284264004806023153213161709341618423516536017617630320386356235442359309297301295374419358452401
Percentage of PaymentsForOriginationAndPurchasesOfLoansHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value3.0-13.0-10.01.0-14.0-19.0-2.04.00.0-4.02.0-2.0-1.02.0-3.0-1.0-2.0-2.0-9.15123-10.82510-1.984-17.61-25.974-3.351-15.12-12.799-1.38-5.617-42.867-0.062-12.646-7.3882.549-6.445
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherLoansAndLeases

us-gaap:PaymentsForProceedsFromOtherLoansAndLeases


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-2121.0-56.0-1317.0-377.051701211-128.02081017860962550120311624475919117201731018808558122-148.336100340126
Percentage of PaymentsForProceedsFromOtherLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromShortTermInvestments

us-gaap:PaymentsForProceedsFromShortTermInvestments


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
Value205829033178181571547-426.0401113-940.0930-106.0-157.011765-363.0-530.0145-1185.593389-1850.874-2101.58-1156.297-1181.378754-253.274739955-1672.8968067-12.1276-628.8871274-490.947288558183923529150121-380.30914372796
Percentage of PaymentsForProceedsFromShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value26242546224418968471164593243
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:PaymentsToAcquireHeldToMaturitySecurities


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
Value14211418081152171435699110043165578954667.01803592108360.1421.4852286142735278.1217445484.45249.277329.667215.49331247.50222
Percentage of PaymentsToAcquireHeldToMaturitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PreferredStockDividendRatePercentage us-gaap:StatementClassOfStock

us-gaap:PreferredStockDividendRatePercentage

us-gaap:SeriesFPreferredStock


Preferred
Period End2023-03-152013-02-072012-05-07
Value0.04240.0630.079
Percentage of PreferredStockDividendRatePercentage100.0100.0100.0

zion:SeriesIPreferredStock


Preferred
Period End2023-06-152013-05-17
Value0.0380.058
Percentage of PreferredStockDividendRatePercentage0.00.0

zion:SeriesJPreferredStock


Preferred
Period End2023-09-152013-08-11
Value0.04440.072
Percentage of PreferredStockDividendRatePercentage0.00.0

us-gaap:PreferredStockRedemptionPremium

us-gaap:PreferredStockRedemptionPremium


Preferred
Period End2021-06-30
Value3000000.0
Percentage of PreferredStockRedemptionPremium100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302012-09-302012-06-302012-03-312011-09-302011-06-302011-02-102011-03-31
Value5.0113.00.03.02.06.01.03.04.01.02.07.010.05.02.09.09.0164.6612.01.02.369130.5131410.3420.2370.19520025
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value111513701141140396782888387775858766599273566963761563053053068347520983153857512283623741948472392462593593481872354401119507277302242279152409
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
Value105167136177492480721381017717055596583759127331022352621394920191835142753363734202930122933365826
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:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-1000000.0-8000000.00-1000000.02000000.0-9000000.001000000.0-2000000.0-8000000.00000008053000.0-115000.0-4862000.0-849000.0-356000.0172000.0-6512000.0-939000.020000.0112000.0-3388000.0-303000.0-2543000.0-2061000.0-5209000.0-439000.0-134000.0-92000.0-4767000.0-2540000.0-108000.0-90000.0-2603000.0-707000.0-250000.0-142000.0-2308000.0-661000.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.00.0100.0100.0100.00.0100.0100.0100.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfLoansHeldForSale

us-gaap:ProceedsFromSaleOfLoansHeldForSale


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value436423400463608299345278
Percentage of ProceedsFromSaleOfLoansHeldForSale100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProfessionalFees

us-gaap:ProfessionalFees


Professional
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
Value1720181210.0121410.0131115121412121413141614121113121311261612102316171015121211148.8978.4326.689119.3058.8879.976
Percentage of ProfessionalFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:ProvisionForLoanLossesExpensed


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-113.0-123.0-61.0451612407.08.0
Percentage of ProvisionForLoanLossesExpensed100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-43.0-94.0-83.041186137119.0
Percentage of ProvisionForLoanLossesExpensed38.176.4136.191.1115.557.1157.1112.5

us-gaap:CommercialRealEstatePortfolioSegment


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-41.0-19.0226.01659-7.0-6.0
Percentage of ProvisionForLoanLossesExpensed36.315.4-36.113.39.924.6-100.0-75.0

us-gaap:ConsumerPortfolioSegment


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-29.0-10.00.0-2.0-41.0443.05.0
Percentage of ProvisionForLoanLossesExpensed25.78.1-0.0-4.4-25.518.342.962.5

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1211-9.011112.0-3.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value12111211112.0-2.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0-133.3100.0100.0100.066.7

us-gaap:RevenueNotFromContractWithCustomerExcludingInterestIncome

us-gaap:RevenueNotFromContractWithCustomerExcludingInterestIncome


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2831343836392634
Percentage of RevenueNotFromContractWithCustomerExcludingInterestIncome100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueNotFromContractWithCustomerExcludingInterestIncome us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-6.0-1.0-6.09.03.09.0-2.04.0
Percentage of RevenueNotFromContractWithCustomerExcludingInterestIncome-21.4-3.2-17.623.78.323.1-7.711.8

us-gaap:RevenueNotFromContractWithCustomerExcludingInterestIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value9.08.09.08.08.09.08.012
Percentage of RevenueNotFromContractWithCustomerExcludingInterestIncome32.125.826.521.122.223.130.835.3

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value9.08.0138.06.08.09.07.0
Percentage of RevenueNotFromContractWithCustomerExcludingInterestIncome32.125.838.221.116.720.534.620.6

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Revenue
Period End2021-06-302020-12-312020-09-302019-12-31
Value1.01.01.00.0
Percentage of RevenueNotFromContractWithCustomerExcludingInterestIncome3.62.92.60.0

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.04.03.02.04.03.03.02.0
Percentage of RevenueNotFromContractWithCustomerExcludingInterestIncome7.112.98.85.311.17.711.55.9

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.04.04.02.04.02.03.02.0
Percentage of RevenueNotFromContractWithCustomerExcludingInterestIncome10.712.911.85.311.15.111.55.9

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.03.04.03.04.03.02.02.0
Percentage of RevenueNotFromContractWithCustomerExcludingInterestIncome10.79.711.87.911.17.77.75.9

us-gaap:OperatingSegments, zions:ZionsBankSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value7.05.06.05.07.05.03.05.0
Percentage of RevenueNotFromContractWithCustomerExcludingInterestIncome25.016.117.613.219.412.811.514.7

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3000000.003000000.03000000.006000000.04000000.00
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.00.0100.0100.00.0100.0100.00.0

us-gaap:SaleOfStockConsiderationReceivedOnTransaction us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:SaleOfStockConsiderationReceivedOnTransaction

zions:RecursionPharmaceuticalsInc


Sale
Period End2021-03-31
Value14
Percentage of SaleOfStockConsiderationReceivedOnTransaction100.0

us-gaap:SalesTypeAndDirectFinancingLeasesProfitLoss

us-gaap:SalesTypeAndDirectFinancingLeasesProfitLoss


Sales
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
Value3.03.03.03.03.03.03.03.03.04.03.04.03.03.0
Percentage of SalesTypeAndDirectFinancingLeasesProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value183000.0722000.087000.031000.0137000.0463000.0214000.076000.0272000.0464000.041000.0343000.0439000.0627000.0140000.0112000.0634000.0570000.0655170.0215310.0559860.0126610.0138500.0537680.0547920.0178090.0116410.0168080.0217780.0217490.077691.0163350.0190180.047273.042796.038880.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value10.0177.05.07.08.09.06.06.0114.0205.0168.07.07.016219.882.927107.374189.7164.7076.5629.3036.6286.4896.1929.099.6697.4384.8215.393
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value10.0177.05.07.08.09.06.06.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRedeemedOrCalledDuringPeriodValue

us-gaap:StockRedeemedOrCalledDuringPeriodValue


Stock
Period End2021-06-302013-12-312012-12-312012-09-302012-06-302012-03-312010-06-30
Value12615980.07001427000.224903
Percentage of StockRedeemedOrCalledDuringPeriodValue100.0100.00.0100.0100.0100.0100.0

us-gaap:StockRedeemedOrCalledDuringPeriodValue us-gaap:StatementClassOfStock

us-gaap:SeriesHPreferredStock


Stock
Period End2021-06-30
Value126
Percentage of StockRedeemedOrCalledDuringPeriodValue100.0

us-gaap:StockRedeemedOrCalledDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-30
Value-3.0
Percentage of StockRedeemedOrCalledDuringPeriodValue-2.4

us-gaap:PreferredStock


Stock
Period End2021-06-302013-12-312012-12-312012-09-302012-06-302012-03-31
Value12618510.0700142700
Percentage of StockRedeemedOrCalledDuringPeriodValue100.0115.80.0100.0100.0100.0

us-gaap:RetainedEarnings


Stock
Period End2021-06-302013-12-312012-12-312012-09-30
Value3.0-251.40.00.0
Percentage of StockRedeemedOrCalledDuringPeriodValue2.4-15.70.00.0

us-gaap:StockRepurchasedDuringPeriodShares us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1.7351.0120.0060.00.0111.6695.536.6385.857-5.506-5.1483.5082.27-2.151-2.32-2.531-1.098-1.06-1.420146
Percentage of StockRepurchasedDuringPeriodShares100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:StockRepurchasedDuringPeriodValue


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value101500.00.00.075274275276
Percentage of StockRepurchasedDuringPeriodValue100.0100.00.00.00.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value101500.00.0-75.0-275.0-276.0-276.0
Percentage of StockRepurchasedDuringPeriodValue100.0100.00.00.0-100.0-100.0-100.00.0

us-gaap:TransferToOtherRealEstate

us-gaap:TransferToOtherRealEstate


Transfer
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
Value0.01.02.01.01.00.05.01.01.05.02.00.03.03.01.01.02.02.01.1496.1671.3185.9981.8263.4463.0843.5684.9928.9544.9056.3387.83312172330375152
Percentage of TransferToOtherRealEstate0.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarnings

us-gaap:UndistributedEarnings


Undistributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2862582181110.05011715513514916015714019177128138
Percentage of UndistributedEarnings100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersDiluted

us-gaap:UndistributedEarningsLossAvailableToCommonShareholdersDiluted


Undistributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2842562171100.0-50.011515413414815915613919081127137
Percentage of UndistributedEarningsLossAvailableToCommonShareholdersDiluted100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrealizedGainLossOnInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:UnrealizedGainLossOnInvestments

zions:RecursionPharmaceuticalsInc


Unrealized
Period End2021-06-30
Value63
Percentage of UnrealizedGainLossOnInvestments100.0

us-gaap:UnrealizedGainLossOnInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:SubsequentEventType

zions:RecursionPharmaceuticalsInc, us-gaap:SubsequentEvent


Unrealized
Period End2021-04-30
Value56
Percentage of UnrealizedGainLossOnInvestments0.0

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value12121312121213141313
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:AmortizationOfGainLossOnTerminatedHedgesIntoEarnings

zions:AmortizationOfGainLossOnTerminatedHedgesIntoEarnings


Amortization
Period End2020-09-30
Value-3000000.0
Percentage of AmortizationOfGainLossOnTerminatedHedgesIntoEarnings100.0

zions:AverageDeposits

zions:AverageDeposits


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value746407144615366650263000569095605528454347
Percentage of AverageDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:AverageDeposits us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value13502019-139.0227524103220782603
Percentage of AverageDeposits1.82.8-9.03.43.85.713.94.7

zions:AverageDeposits us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value15350142431951362813023116647811842
Percentage of AverageDeposits20.619.912.720.520.720.513.921.4

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value156021518338814462135221212911411565
Percentage of AverageDeposits20.921.325.321.721.521.320.420.9

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1500139840131612821047191097
Percentage of AverageDeposits2.02.02.62.02.01.83.42.0

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value70366544163599657225103125028
Percentage of AverageDeposits9.49.210.69.09.19.02.19.1

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value65526069114570454024828844547
Percentage of AverageDeposits8.88.57.48.68.68.515.08.2

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value43884279140383836622988202866
Percentage of AverageDeposits5.96.09.15.85.85.33.65.2

us-gaap:OperatingSegments, zions:ZionsBankSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value228622171163519283179771593015515736
Percentage of AverageDeposits30.630.441.329.028.528.027.728.5

zions:AverageLoansAndLeases

zions:AverageLoansAndLeases


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value52770536653225499354268487971514882848324
Percentage of AverageLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:AverageLoansAndLeases us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value8658014861956156319469
Percentage of AverageLoansAndLeases1.61.514.91.11.01.212.61.0

zions:AverageLoansAndLeases us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1245212704-35.01347613570123994912438
Percentage of AverageLoansAndLeases23.623.7-10.924.525.025.432.525.5

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value13053130511961295412524110221810819
Percentage of AverageLoansAndLeases24.724.360.923.623.122.611.922.2

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1606157329155014851258111235
Percentage of AverageLoansAndLeases3.02.99.02.82.72.67.32.5

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value495051082.0530552474736-14.04769
Percentage of AverageLoansAndLeases9.49.50.69.69.79.7-9.39.8

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3120324736331031692716362708
Percentage of AverageLoansAndLeases5.96.111.26.05.85.623.85.5

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value34763451223542349031022.03161
Percentage of AverageLoansAndLeases6.66.46.86.46.46.41.36.5

us-gaap:OperatingSegments, zions:ZionsBankSegment


Average
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1324813730241423714222130013013229
Percentage of AverageLoansAndLeases25.125.67.525.926.226.619.927.1

zions:CapitalMarketsAndForeignExchangeGainLoss

zions:CapitalMarketsAndForeignExchangeGainLoss


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value17151916182419239.01717147.0
Percentage of CapitalMarketsAndForeignExchangeGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:CardFees

zions:CardFees


Card
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
Value242121211921222423222424
Percentage of CardFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:CommercialAccountFees

zions:CommercialAccountFees


Commercial
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
Value343232323031313130302931
Percentage of CommercialAccountFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:CreditAndCollectionServices

zions:CreditAndCollectionServices


Credit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6.06.06.06.06.04.04.02.08.06.06.05.07.0
Percentage of CreditAndCollectionServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:DerivativeInstrumentNoninterestIncomeExpense us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

zions:DerivativeInstrumentNoninterestIncomeExpense

us-gaap:InterestRateContract, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2.02.02.01.01.02.01.01.00.0
Percentage of DerivativeInstrumentNoninterestIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.00.0

zions:TerminatedSwapsOnLongTermDebt, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-06-30
Value3.03.03.03.06.00.0
Percentage of DerivativeInstrumentNoninterestIncomeExpense150.0150.0150.0300.0600.00.0

zions:DerivativeInstrumentNoninterestIncomeExpense us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:ForeignExchangeContract, us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6.05.05.04.05.07.07.06.0
Percentage of DerivativeInstrumentNoninterestIncomeExpense300.0250.0250.0400.0500.0350.0700.0600.0

us-gaap:OtherContract, us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-30
Value-6.0-4.0-6.03.02.09.02.0
Percentage of DerivativeInstrumentNoninterestIncomeExpense-300.0-200.0-300.0300.0200.0450.0200.0

zions:InterestRateSwapsForCustomers, us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value87-182.0-26.04.034312-54.068
Percentage of DerivativeInstrumentNoninterestIncomeExpense4350.0-9100.0-1300.0400.03400.015600.0-5400.06800.0

zions:OffsettingInterestRateDerivatives, us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-89.0206439.0-39.0-313.066-65.0
Percentage of DerivativeInstrumentNoninterestIncomeExpense-4450.010300.02150.0900.0-3900.0-15650.06600.0-6500.0

zions:DerivativeInstrumentNoninterestIncomeExpense us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4.04.04.04.07.02.03.00.00.00.01.00.00.0
Percentage of DerivativeInstrumentNoninterestIncomeExpense200.0200.0200.0400.0700.0100.0300.00.00.00.00.00.00.0

us-gaap:Nondesignated


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-30
Value-2.02516202.01516126.07.09.0
Percentage of DerivativeInstrumentNoninterestIncomeExpense-100.01250.0800.02000.0200.0750.01600.01200.00.00.00.0

zions:DilutiveEffectofCommonStockWarrants

zions:DilutiveEffectofCommonStockWarrants


Dilutive
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-0.386-1.9850.7237.810.6338.1879.3189.739-0.5961112
Percentage of DilutiveEffectofCommonStockWarrants100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:DilutiveEffectofStockOptions

zions:DilutiveEffectofStockOptions


Dilutive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value312000.0336000.0-3000.0171000.0160000.0380000.0-23000.0523000.0624000.0735000.0-70000.0912000.01024000.0
Percentage of DilutiveEffectofStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:FairValueAssetsMeasuredOnRecurringBasisAndGainLossIncludedInEquitySecuritiesGainsLossesNet us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel

zions:FairValueAssetsMeasuredOnRecurringBasisAndGainLossIncludedInEquitySecuritiesGainsLossesNet

us-gaap:PrivateEquityFunds, us-gaap:FairValueInputsLevel3


Fair
Period End2020-12-312020-09-302020-06-302019-09-302019-06-30
Value3000000.01000000.0-4000000.01000000.0-2000000.0
Percentage of FairValueAssetsMeasuredOnRecurringBasisAndGainLossIncludedInEquitySecuritiesGainsLossesNet100.0100.0100.0100.0100.0

zions:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOther us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel

zions:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOther

us-gaap:PrivateEquityFunds, us-gaap:FairValueInputsLevel3


Fair
Period End2020-12-312020-09-302020-06-302019-06-30
Value-6000000.0000
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOther100.00.00.00.0

zions:FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetNoninterestIncome us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel

zions:FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetNoninterestIncome

us-gaap:ServicingContracts, us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0-1000000.0000-1000000.0002000000.0
Percentage of FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetNoninterestIncome0.0100.00.00.00.0100.00.00.0100.0

zions:FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal

zions:FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-123.0-132.0-67.0551682584.010.0214.0
Percentage of FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal us-gaap:ConsolidationItems

zions:CorporateReconcilingItemsAndEliminations


Financing
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.02.0-3.02.03.01.0
Percentage of FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal-0.03.6-1.80.875.010.0

zions:FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, zions:AmegyCorporationSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-45.0-53.0-22.06.0251031418
Percentage of FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal36.640.232.810.914.939.9350.0180.0

us-gaap:OperatingSegments, zions:CaliforniaBankAndTrustSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-32.0-37.00.03646381.0-6.0
Percentage of FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal26.028.0-0.065.527.414.725.0-60.0

us-gaap:OperatingSegments, zions:CommerceBankOfWashingtonSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-30
Value-1.0-3.0-3.01.05.05.0-2.0
Percentage of FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal0.82.34.51.83.01.9-20.0

us-gaap:OperatingSegments, zions:NationalBankOfArizonaSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-14.0-10.0-6.06.01620-3.0
Percentage of FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal11.47.69.010.99.57.8-75.0

us-gaap:OperatingSegments, zions:NevadaStateBankSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-30
Value-12.0-18.0-12.0-2.040121.0
Percentage of FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal9.813.617.9-3.623.84.710.0

us-gaap:OperatingSegments, zions:VectraBankColoradoSegment


Financing
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-11.0-7.018-1.0250.0-3.0
Percentage of FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal8.910.432.7-0.69.70.0-30.0

us-gaap:OperatingSegments, zions:ZionsBankSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-8.0-11.0-17.0-10.04053-9.01.0
Percentage of FinancingReceivableAndOffBalanceSheetLiabilityCreditLossExpenseReversal6.58.325.4-18.223.820.5-225.010.0

zions:LoanRelatedFeesAndIncome

zions:LoanRelatedFeesAndIncome


Loan
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
Value212525322726202117161917
Percentage of LoanRelatedFeesAndIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:NetSharesIssuedFromStockWarrantExercises us-gaap:StatementEquityComponents

zions:NetSharesIssuedFromStockWarrantExercises

us-gaap:CommonStock


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0001000.0007000.01000.0492000.0183000.053000.0
Percentage of NetSharesIssuedFromStockWarrantExercises0.00.00.0100.00.00.0100.0100.0100.0100.0100.0

zions:Netchangeinothernoninterestbearinginvestments

zions:Netchangeinothernoninterestbearinginvestments


Netchangeinothernoninterestbearinginvestments
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
Value-8.01223-3.088-29.08988-59.054-15.033
Percentage of Netchangeinothernoninterestbearinginvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:NoninterestincomeCustomerrelatedFees

zions:NoninterestincomeCustomerrelatedFees


Noninterestincome
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value139133138139130143133140130122131126125
Percentage of NoninterestincomeCustomerrelatedFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:OCIOtherNonInterestBearingInvestmentsUnrealizedGainLossAfterTax

zions:OCIOtherNonInterestBearingInvestmentsUnrealizedGainLossAfterTax


O
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1000000.02000000.05000000.02000000.0-8000000.02000000.0-3000000.0-3000000.0
Percentage of OCIOtherNonInterestBearingInvestmentsUnrealizedGainLossAfterTax100.0100.0100.0100.0100.0100.0100.0100.0

zions:OtherCustomerRelatedFees

zions:OtherCustomerRelatedFees


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value13117.07.06.06.06.05.05.05.08.07.0
Percentage of OtherCustomerRelatedFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:OtherNoninterestBearingInvestmentsNonmarketableEquitySecuritiesGrossGains

zions:OtherNoninterestBearingInvestmentsNonmarketableEquitySecuritiesGrossGains


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6614145.03.05.0132.01.04.08.04.04.0
Percentage of OtherNoninterestBearingInvestmentsNonmarketableEquitySecuritiesGrossGains100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:OtherNoninterestBearingInvestmentsNonmarketableEquitySecuritiesGrossLosses

zions:OtherNoninterestBearingInvestmentsNonmarketableEquitySecuritiesGrossLosses


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3.03.02.01.07.01110.00.04.03.06.05.03.0
Percentage of OtherNoninterestBearingInvestmentsNonmarketableEquitySecuritiesGrossLosses100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

zions:RetailAndBusinessBankingFees

zions:RetailAndBusinessBankingFees


Retail
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
Value181718171519202020182019
Percentage of RetailAndBusinessBankingFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:StockholdersEquityChangeInDeferredCompensation

zions:StockholdersEquityChangeInDeferredCompensation


Stockholders
Period End2021-06-302020-09-302020-06-302019-09-30
Value-1000000.0-1000000.01000000.0-1000000.0
Percentage of StockholdersEquityChangeInDeferredCompensation100.0100.0100.0100.0

zions:StockholdersEquityChangeInDeferredCompensation us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302020-09-302020-06-302019-09-30
Value-1000000.0-1000000.01000000.0-1000000.0
Percentage of StockholdersEquityChangeInDeferredCompensation100.0100.0100.0100.0

zions:TransferOfPortfolioLoansAndLeasesToHeldForSaleAndTransferOfLoansHeldForSaleToPortfolioLoansNet

zions:TransferOfPortfolioLoansAndLeasesToHeldForSaleAndTransferOfLoansHeldForSaleToPortfolioLoansNet


Transfer
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value34-7.010.0-43.0157.022
Percentage of TransferOfPortfolioLoansAndLeasesToHeldForSaleAndTransferOfLoansHeldForSaleToPortfolioLoansNet100.0100.0100.0100.0100.0100.0100.0

zions:UndistributedEarningsApplicabletoNonvestedShares

zions:UndistributedEarningsApplicabletoNonvestedShares


Undistributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2000000.02000000.01000000.01000000.0002000000.01000000.01000000.01000000.01000000.01000000.01000000.0
Percentage of UndistributedEarningsApplicabletoNonvestedShares100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0

zions:WealthManagementAndTrustFees

zions:WealthManagementAndTrustFees


Wealth
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1216141516151615141414
Percentage of WealthManagementAndTrustFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

zions:WealthManagementFees

zions:WealthManagementFees


Wealth
Period End2021-06-302020-06-30
Value129.0
Percentage of WealthManagementFees100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax us-gaap:RetirementPlanType

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-3000000.0-2000000.0-2000000.0-2000000.0-2000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax100.0100.0100.0100.0100.0

us-gaap:AdvancesFromFederalHomeLoanBanks

us-gaap:AdvancesFromFederalHomeLoanBanks


Advances
Period End2020-12-31
Value13300
Percentage of AdvancesFromFederalHomeLoanBanks100.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312016-12-312015-12-312012-03-312011-12-312011-09-302010-12-312010-09-30
Value1947017863171601607415577155901483215283157421605115619155691606914288847334673503426245013630
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value359318427343229152216263167153207286159167121209236210263273326269299313388326217214182166977938203
Percentage of AssetsFairValueDisclosure1.81.82.52.11.51.01.51.71.11.01.32.00.02.00.00.00.00.00.00.00.00.00.00.00.00.00.00.05.34.822.920.85.6

us-gaap:FairValueInputsLevel2


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value190241744716637156331525415342144911489315451153461574913853930481726622515144953933343231693066269925521897195418811976206721002129207419591770
Percentage of AssetsFairValueDisclosure97.797.797.097.397.998.497.797.498.298.398.097.00.096.50.00.00.00.00.00.00.00.00.00.00.00.00.00.060.660.848.743.548.8

us-gaap:FairValueInputsLevel3


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value879896989496125127124120113148136133133123565514636796799138711321161112910681172112611841207121016041656
Percentage of AssetsFairValueDisclosure0.40.50.60.60.60.60.80.80.80.80.71.00.01.60.00.00.00.00.00.00.00.00.00.00.00.00.00.034.234.528.435.645.6

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsNonrecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-30
Value9.04.0155.0
Percentage of AssetsFairValueDisclosure0.00.00.10.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsNonrecurring, zions:CollateralDependentLoans


Assets
Period End2021-06-302021-03-312020-12-312020-09-30
Value9.04.0141.0
Percentage of AssetsFairValueDisclosure0.00.00.10.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsNonrecurring, zions:OtherRealEstateOwned


Assets
Period End2020-12-312020-09-30
Value1.04.0
Percentage of AssetsFairValueDisclosure0.00.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsNonrecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value9.04.0166.01.0
Percentage of AssetsFairValueDisclosure0.00.00.10.00.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsNonrecurring, zions:CollateralDependentLoans


Assets
Period End2021-06-302021-03-312020-12-312020-09-30
Value9.04.0141.0
Percentage of AssetsFairValueDisclosure0.00.00.10.0

us-gaap:FairValueMeasurementsNonrecurring, zions:OtherRealEstateOwned


Assets
Period End2020-12-312020-09-30
Value1.04.0
Percentage of AssetsFairValueDisclosure0.00.0

us-gaap:AssetsHeldInTrust

us-gaap:AssetsHeldInTrust


Assets
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1201139310291818683726470
Percentage of AssetsHeldInTrust100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value275276370388402126
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:AgencySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value31334037365.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax11.312.010.89.59.04.0

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value555568666237
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax20.019.918.417.015.429.4

us-gaap:USTreasurySecurities


Available
Period End2020-09-302020-06-302019-12-31
Value4.00.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax1.00.00.0

zions:AgencyGuaranteedMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value18618826228030483
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax67.668.170.872.275.665.9

zions:SmallBusinessAdministrationLoanBackedSecurities


Available
Period End2021-06-302020-09-302020-06-302019-12-31
Value3.01.00.01.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax1.10.30.00.8

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value15722856464287
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:AgencySecurities


Available
Period End2020-09-302020-06-302019-12-31
Value2.01.04.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax4.32.44.6

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-06-302019-12-31
Value3.05.00.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax1.92.20.00.0

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-06-302019-12-31
Value2737130.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax17.216.223.20.00.0

zions:AgencyGuaranteedMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value961538.05.02.042
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax61.167.114.310.94.848.3

zions:SmallBusinessAdministrationLoanBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value313335393941
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax19.714.562.584.892.947.1

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1691169516951820
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:AgencySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value267264238392
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost15.815.614.021.5

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value506509432448
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost29.930.025.524.6

zions:AgencyGuaranteedMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value725734728774
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost42.943.342.942.5

zions:AvailableforsaleOtherdebtsecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value606016060
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost3.53.59.43.3

zions:SmallBusinessAdministrationLoanBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value133128137146
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost7.97.68.18.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1448145313471063
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:AgencySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value361385292151
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost24.926.521.714.2

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value643638640595
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost44.443.947.556.0

zions:AgencyGuaranteedMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value391373372284
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost27.025.727.626.7

zions:SmallBusinessAdministrationLoanBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value53574333
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost3.73.93.23.1

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value14809132971222611297
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:AgencySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value363395521515
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost2.53.04.34.6

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value269272181122
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost1.82.01.51.1

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value155155155145
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost1.01.21.31.3

zions:AgencyGuaranteedMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1311711511103399402
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost88.686.684.683.2

zions:SmallBusinessAdministrationLoanBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value89094910151098
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost6.07.18.39.7

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value1805216596154171432013686
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:AgencySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value9911044105110581301
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis5.56.36.87.49.5

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value15221520135212541282
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis8.49.28.88.89.4

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value15520520519525
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis0.91.21.31.40.2

zions:AgencyGuaranteedMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value142331261811439104619518
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis78.876.074.273.169.5

zions:AvailableforsaleOtherdebtsecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value75751757525
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis0.40.51.10.50.2

zions:SmallBusinessAdministrationLoanBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value10761134119512771535
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis6.06.87.88.911.2

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:AgencySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value991104410511058
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis5.56.36.87.4

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1522152013521254
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis8.49.28.88.8

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value155205205195
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis0.91.21.31.4

zions:AgencyGuaranteedMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value14233126181143910461
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis78.876.074.273.1

zions:AvailableforsaleOtherdebtsecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value757517575
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis0.40.51.10.5

zions:SmallBusinessAdministrationLoanBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1076113411951277
Percentage of AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis6.06.87.88.9

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value104151149140
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost us-gaap:InformationByCategoryOfDebtSecurity

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value1041019989
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.066.966.463.6

zions:AgencyGuaranteedMortgageBackedSecurities


Available
Period End2020-09-30
Value1.0
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost0.7

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value16644157311466214201137251403314672149041473714625146271489615089151551528615472131871031893908605754259784540429737083391327631713421307629242953286329092954304230683701
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

us-gaap:AgencySecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value10771091109312761302
Percentage of AvailableForSaleSecuritiesDebtSecurities6.56.97.59.09.5

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value15701420132013011319
Percentage of AvailableForSaleSecuritiesDebtSecurities9.49.09.09.29.6

us-gaap:USTreasurySecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value16819219910025
Percentage of AvailableForSaleSecuritiesDebtSecurities1.01.21.40.70.2

zions:AgencyGuaranteedMortgageBackedSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value126531169310736102139559
Percentage of AvailableForSaleSecuritiesDebtSecurities76.074.373.271.969.6

zions:AvailableforsaleOtherdebtsecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value75175752525
Percentage of AvailableForSaleSecuritiesDebtSecurities0.51.10.50.20.2

zions:SmallBusinessAdministrationLoanBackedSecurities


Available
Period End2021-03-312020-12-312020-09-302020-06-302019-12-31
Value11011160123912861495
Percentage of AvailableForSaleSecuritiesDebtSecurities6.67.48.59.110.9

us-gaap:BankingRegulationCapitalConservationBufferCommonEquityTierOneRiskBasedCapitalActual

us-gaap:BankingRegulationCapitalConservationBufferCommonEquityTierOneRiskBasedCapitalActual


Banking
Period End2020-12-31
Value2.5
Percentage of BankingRegulationCapitalConservationBufferCommonEquityTierOneRiskBasedCapitalActual100.0

us-gaap:BankingRegulationCapitalConservationBufferTierOneRiskBasedCapitalActual

us-gaap:BankingRegulationCapitalConservationBufferTierOneRiskBasedCapitalActual


Banking
Period End2020-12-31
Value2.5
Percentage of BankingRegulationCapitalConservationBufferTierOneRiskBasedCapitalActual100.0

us-gaap:BankingRegulationCapitalConservationBufferTotalRiskBasedCapitalActual

us-gaap:BankingRegulationCapitalConservationBufferTotalRiskBasedCapitalActual


Banking
Period End2020-12-31
Value2.5
Percentage of BankingRegulationCapitalConservationBufferTotalRiskBasedCapitalActual100.0

us-gaap:BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioCapitalAdequacyMinimum

us-gaap:BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioCapitalAdequacyMinimum


Banking
Period End2020-12-31
Value4.5
Percentage of BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioCapitalAdequacyMinimum100.0

us-gaap:Capital

us-gaap:Capital


Capital
Period End2020-12-312019-12-312018-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value78627411745075357443662166167780
Percentage of Capital100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalRequiredForCapitalAdequacyToRiskWeightedAssets

us-gaap:CapitalRequiredForCapitalAdequacyToRiskWeightedAssets


Capital
Period End2020-12-31
Value8.0
Percentage of CapitalRequiredForCapitalAdequacyToRiskWeightedAssets100.0

us-gaap:CapitalRequiredToBeWellCapitalized

us-gaap:CapitalRequiredToBeWellCapitalized


Capital
Period End2020-12-312019-12-312018-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value55875604535946744573451443964307
Percentage of CapitalRequiredToBeWellCapitalized100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets

us-gaap:CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets


Capital
Period End2020-12-312019-12-312018-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value10.00.10.10.10.10.110.010.0
Percentage of CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedComputerSoftwareGross

us-gaap:CapitalizedComputerSoftwareGross


Capitalized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value581507449401354295239208
Percentage of CapitalizedComputerSoftwareGross100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndDueFromBanks

us-gaap:CashAndDueFromBanks


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value525576543576570730705796538536614517468470548541481566737553560517798602758720845588138413411175136511839281841106011241082122411021035949924106010681045137014751855
Percentage of CashAndDueFromBanks100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonEquityTierOneCapital

us-gaap:CommonEquityTierOneCapital


Common
Period End2020-12-312019-12-312018-12-31
Value601357196245
Percentage of CommonEquityTierOneCapital100.0100.0100.0

us-gaap:CommonEquityTierOneCapitalRatio

us-gaap:CommonEquityTierOneCapitalRatio


Common
Period End2020-12-312019-12-312018-12-31
Value10.80.1020.117
Percentage of CommonEquityTierOneCapitalRatio100.0100.0100.0

us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized

us-gaap:CommonEquityTierOneCapitalRequiredToBeWellCapitalized


Common