CMA


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

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic
us-gaap:AdjustmentsForChangeInAccountingPrinciple

us-gaap:EarningsPerShareDiluted
us-gaap:AdjustmentsForChangeInAccountingPrinciple

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit
us-gaap:AdjustmentsForChangeInAccountingPrinciple
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpense

us-gaap:InterestExpenseLongTermDebt

us-gaap:InterestIncomeExpenseNet
us-gaap:StatementBusinessSegments

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:AdjustmentsForChangeInAccountingPrinciple
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

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

us-gaap:Assets
us-gaap:ConsolidatedEntities

us-gaap:Liabilities
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:TierOneRiskBasedCapital
dei:LegalEntity

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities

us-gaap:Land

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:FurnitureAndFixturesGross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities

us-gaap:Goodwill
us-gaap:StatementBusinessSegments
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:OtherAssets
us-gaap:ConsolidatedEntities

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

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock
us-gaap:ConsolidatedEntities

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:AdjustmentsForChangeInAccountingPrinciple
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:AdjustmentsForChangeInAccountingPrinciple
us-gaap:ConsolidatedEntities

us-gaap:TreasuryStockValue
us-gaap:ConsolidatedEntities

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit
us-gaap:AdjustmentsForChangeInAccountingPrinciple

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:ProfitLoss
us-gaap:AdjustmentsForChangeInAccountingPrinciple
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:ConsolidationItems, us-gaap:DebtInstrument
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

cma:CardFees

cma:CommercialLendingFees
us-gaap:DerivativeInstrumentRisk
cma:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetUnrealizedGainLossIncludedInEarnings

cma:Fiduciaryincome
us-gaap:ProspectiveAdoptionOfNewAccountingPronouncements
cma:Hostingfeespreviouslyincludinginoutsideprocessingfeeexpense

cma:IncomeLossFromContinuingOperationsBeforeIncomeTaxes

cma:IncreaseDecreaseInOtherFinancingAssetsAndLiabilitiesNet

cma:IncreaseDecreaseInOtherInvestingAssetsAndLiabilitiesNet

cma:InterestAndDividendIncomeSecuritiesAFSAndHTM
cma:DerivativePurpose, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
cma:Interestexpenseonhedgedmediumandlongtermdebt

cma:LetterOfCreditFees

cma:NetIncreaseInFixedAssets

cma:NonInterestIncomeExcludingNetSecuritiesGains

cma:OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostBeforeTax

cma:OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostNetOfTax

cma:OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostTax

cma:Othersourcesofnoninterestincome
us-gaap:StatementBusinessSegments

cma:OutsideProcessingFeeExpense

cma:Servicechargesondepositaccounts

cma:SoftwareExpenses

cma:Stockoptionsexcludedbecauseexercisepricesweregreaterthanaveragemarketpriceofshares
us-gaap:RetirementPlanType
cma:Totalothercomponentsofnetbenefitcreditorcost

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AdvertisingExpense
cma:TaxCreditsandBenefitsRelatedToTaxCreditEntities, us-gaap:ConsolidatedEntities
us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount
cma:TaxCreditsandBenefitsRelatedToTaxCreditEntities, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment
cma:TaxCreditsandBenefitsRelatedToTaxCreditEntities, us-gaap:ConsolidatedEntities
us-gaap:AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization
cma:TaxCreditsandBenefitsRelatedToTaxCreditEntities, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:Range, us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesGrossRealizedGains
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesGrossRealizedLosses

us-gaap:BankOwnedLifeInsuranceIncome

us-gaap:BrokerageCommissionsRevenue
cma:DerivativePurpose, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1

us-gaap:CommonStockDividendsPerShareDeclared
cma:DefinedBenefitsComponents, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
cma:DefinedBenefitsComponents, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
cma:DefinedBenefitsComponents, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
cma:DefinedBenefitsComponents, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:AdjustmentsForChangeInAccountingPrinciple
us-gaap:RetirementPlanType
cma:DefinedBenefitsComponents, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanType

us-gaap:DepreciationAndAmortization

us-gaap:DerivativeGainLossOnDerivativeNet
cma:DerivativePurpose
cma:DerivativePurpose, us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:DividendsPreferredStock

us-gaap:DividendsPreferredStockCash
us-gaap:StatementEquityComponents

us-gaap:DividendsPreferredStockStock

us-gaap:EquipmentExpense

us-gaap:FederalDepositInsuranceCorporationPremiumExpense
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2
us-gaap:LoanRestructuringModification
us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:GainLossOnCashFlowHedgeIneffectivenessNet

us-gaap:GainsLossesOnSalesOfOtherRealEstate

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInInterestAndDividendsReceivable

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio

us-gaap:InterestExpenseDeposits

us-gaap:InterestExpenseShortTermBorrowings

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestPaid

us-gaap:LaborAndRelatedExpense

us-gaap:LegalFees

us-gaap:NoninterestExpense
us-gaap:StatementBusinessSegments

us-gaap:NoninterestIncome
us-gaap:StatementBusinessSegments

us-gaap:NoninterestIncomeOtherOperatingIncome

us-gaap:OccupancyNet

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherInterestAndDividendIncome

us-gaap:OtherNoninterestExpense
us-gaap:AdjustmentsForChangeInAccountingPrinciple

us-gaap:PaymentsForFederalHomeLoanBankAdvances

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock

us-gaap:PaymentsToAcquireAvailableForSaleSecurities

us-gaap:PaymentsToAcquireFederalHomeLoanBankStock

us-gaap:PreferredStockDividendRatePercentage

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfPreferredStockPreferenceStockAndWarrants

us-gaap:ProceedsFromLegalSettlements

us-gaap:ProceedsFromLifeInsurancePolicies

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfForeclosedAssets

us-gaap:ProvisionForLoanLeaseAndOtherLosses
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:StatementBusinessSegments

us-gaap:RepaymentsOfDebt

us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings

us-gaap:StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:TransferToOtherRealEstate
us-gaap:StatementEquityComponents
us-gaap:TreasuryStockSharesAcquired

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted

us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities

us-gaap:VariableInterestEntityActivityBetweenVIEAndEntityExpense

cma:AllowanceForOffBalanceSheetCreditLosses

cma:AssetsFairValueDisclosureExcludingAssetsValuedatNAV
us-gaap:FairValueByFairValueHierarchyLevel

cma:AverageBalanceDuringPeriodDeposits
us-gaap:StatementBusinessSegments

cma:AverageBalanceDuringPeriodLoansAndLeasesReceivableNetOfDeferredIncome
us-gaap:StatementBusinessSegments
us-gaap:DefinedBenefitPlanByPlanAssetCategories
cma:BalanceAtBeginningAndEndOfPeriod
dei:LegalEntity
cma:CET1CapitalToRiskWeightedAssets
us-gaap:ConsolidatedEntities
cma:CET1RiskBasedCapital

cma:CarryingValueOfStandbyAndCommercialLettersOfCredit

cma:CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInAllowanceForCreditLossesOnLendingRelatedCommitments

cma:CarryingValueOfStandbyAndCommercialLettersOfCreditIncludedInDeferredFees

cma:CarryingValueOfUnusedCommitmentsToExtendCredit
cma:DerivativePurpose, us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
cma:Carryingvalueofhedgeditem

cma:CashCollateralPostedForDerivativesInLiabilityPosition
dei:LegalEntity
cma:CommonEquityTierOneRiskedBasedCapital
us-gaap:Range
dei:LegalEntity
cma:ConservationBuffer
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
cma:CreditRelatedFinancialInstruments
us-gaap:FairValueByMeasurementBasis

cma:CurrentLoans
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:EquitySecuritiesByIndustry, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cma:DeferredTaxAssetsDeferredLoanOrginationFeesAndCosts

cma:DeferredTaxAssetsOperatingLeaseLiability

cma:DeferredTaxLiabilitiesTaxDeferredIncomeCompensationandBenefitsPensions

cma:DeferredTaxLiabilityHedginggainsandlosses

cma:DeferredTaxLiabilityLeaseRightofUseAsset

cma:DeferredTaxLiabilitynetunrealizedgainsoninvestmentsecuritiesavailableforsale

cma:DepositsCustomerCertificatesDeposits
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

cma:DerivativeAssetsCashCollateral

cma:DomesticTimeDeposits250000orMore

cma:EfficiencyRatio
us-gaap:StatementBusinessSegments

cma:FairValueAmountOfDerivativeCreditRiskParticipationAgreements

cma:FinancingReceivableRatioOfAllowanceForCreditLossesToAllLoans
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment

cma:FinancingReceivableRatioOfAllowanceForLoanLossesToAllLoansExcludingPPPLoans
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment

cma:ForeignTimeDeposits250000OrMore
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
cma:InterestBearingDepositLiabilitiesOtherTimeDeposit
us-gaap:FairValueByMeasurementBasis

cma:InterestRateSwapAgreementMaturity
us-gaap:ConsolidatedEntities
cma:InvestmentsInMajorityOwnedConsolidatedSubsidiaries

cma:LIBORloanspercentofportfolio

cma:LeasesReceivableCommercialLeaseFinancingNetOfDeferredIncome
dei:LegalEntity
cma:LeverageRatio
us-gaap:ConsolidatedEntities

cma:LiabilitiesSecuredByPledgedSecurities

cma:LoanInterestReceivable

cma:LoansAndLeasesReceivableConsumerLoansNetOfDeferredIncome

cma:LoansAndLeasesReceivableConsumerMortgageNetOfDeferredIncome

cma:LoansAndLeasesReceivableForeignNetOfDeferredIncomeOther

cma:LoansAndLeasesReceivableRelatedPartiesBeginningOfPeriod

cma:LoansAndLeasesReceivableRelatedPartiesEndOfPeriod

cma:LoansPastDueAndStillAccruing
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:EquitySecuritiesByIndustry, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:EquitySecuritiesByIndustry, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablesPeriodPastDue

cma:LoansReceivableCommercialFinancialAndAgriculturalNetOfDeferredIncome

cma:LoansReceivableCommercialMortgageNetOfDeferredIncome
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cma:LoansReceivableUnusedCommitment

cma:LoansWithTermsExtendedInAccordanceWithCARESAct

cma:NetCreditRelatedChargeOffs
us-gaap:StatementBusinessSegments

cma:NetFeesFromPPPLoans

cma:NotionalAmountOfDerivativeCreditRiskParticipationAgreements

cma:PercentofloanportfoliowithinterestrateswapstoconvertvariableLBIORtofixedrates
us-gaap:DefinedBenefitPlanByPlanAssetCategories
cma:Purchases

cma:RealEstateConstructionLoansNetOfDeferredIncome

cma:ReturnOnAverageAssets
us-gaap:StatementBusinessSegments

cma:RiskParticipationsCoveringStandbyAndCommercialLettersOfCredit
us-gaap:DefinedBenefitPlanByPlanAssetCategories
cma:Sales

cma:SalesTypeandDirectFinancingLeasesUnguaranteedResidualAsset

cma:SegmentReportingAverageAssets
us-gaap:StatementBusinessSegments
dei:LegalEntity
cma:Tier1CapitalToRiskWeightedAssets
us-gaap:ConsolidatedEntities
cma:Tier1RiskBasedCapital

cma:TotalAutomotiveExposure
us-gaap:AccountsNotesLoansAndFinancingReceivablesByIndustryOfCounterpartyType

cma:TotalAutomotiveLoans
us-gaap:AccountsNotesLoansAndFinancingReceivablesByIndustryOfCounterpartyType
dei:LegalEntity
cma:TotalCapitalToRiskWeightedAssets

cma:TotalInternallyClassifiedWatchListLettersOfCredit
us-gaap:ConsolidatedEntities
cma:TotalRiskBasedCapital

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
us-gaap:FairValueByMeasurementBasis
us-gaap:AlternativeInvestment
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:AvailableForSaleSecurities

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesAmortizedCost
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:ManagingRisksInherentInServicingAssetsAndServicingLiabilitiesByTypeOfRisk

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
us-gaap:FinancialInstrument

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us-gaap:FairValueByMeasurementBasis

us-gaap:BuildingsAndImprovementsGross

us-gaap:Capital
dei:LegalEntity

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cma:CertificatesOfDepositAndOtherDepositsWithStatedMaturity
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cma:CertificatesOfDepositAndOtherDepositsWithStatedMaturity
us-gaap:ContractualMaturitiesTimeDeposits100000OrMoreSixMonthsThrough12Months
cma:CertificatesOfDepositAndOtherDepositsWithStatedMaturity
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cma:CertificatesOfDepositAndOtherDepositsWithStatedMaturity
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us-gaap:CreditDerivativeMaximumExposureUndiscounted

us-gaap:DebtInstrumentCarryingAmount

us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount

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us-gaap:FairValueByMeasurementFrequency

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cma:DerivativePurpose
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cma:DerivativePurpose, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
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us-gaap:FairValueByMeasurementFrequency

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us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset

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cma:DerivativePurpose
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cma:DerivativePurpose, us-gaap:DerivativeInstrumentRisk
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cma:DerivativePurpose, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
cma:MethodofAssessingEffectiveness, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
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us-gaap:FairValueByMeasurementBasis

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us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

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us-gaap:ConsolidationItems

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us-gaap:FairValueByMeasurementBasis

us-gaap:FederalReserveBankStock

us-gaap:FinancialInstrumentsOwnedAndPledgedAsCollateralAtFairValue

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

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

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

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

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment
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us-gaap:FinancingReceivablePortfolioSegment
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us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

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

us-gaap:FinancingReceivableRecordedInvestmentCurrent
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:EquitySecuritiesByIndustry, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
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us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus
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us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment
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us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

us-gaap:FinancingReceivableRecordedInvestmentPastDue

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

us-gaap:FinancingReceivableRevolvingConvertedToTermLoan
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:ForeclosedAssets

us-gaap:HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization

us-gaap:InterestBearingDepositLiabilities

us-gaap:InterestBearingDepositsInBanks
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:InterestBearingForeignDepositTimeDeposits

us-gaap:InterestReceivable
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:LesseeOperatingLeaseDiscountRate

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths

us-gaap:LettersOfCreditOutstandingAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:LitigationReserve

us-gaap:LoansAndLeasesReceivableAllowance

us-gaap:LoansAndLeasesReceivableDeferredIncome

us-gaap:LoansAndLeasesReceivableImpairedCommitmentToLend

us-gaap:LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:EquitySecuritiesByIndustry, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:EquitySecuritiesByIndustry, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:LoansAndLeasesReceivableNetOfDeferredIncome

us-gaap:LoansAndLeasesReceivableNetReportedAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementFrequency
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:GeographicDistribution
us-gaap:LoansReceivableFairValueDisclosure
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:GeographicDistribution
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroup
us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearThree
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:LongtermDebtWeightedAverageInterestRate
cma:CreditRelatedFinancialInstruments
us-gaap:LossContingencyEstimateOfPossibleLoss
cma:CreditRelatedFinancialInstruments, us-gaap:FinancialInstrument
cma:CreditRelatedFinancialInstruments, us-gaap:Range
cma:CreditRelatedFinancialInstruments, us-gaap:Range, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:Range, us-gaap:FinancialInstrument
us-gaap:Range, us-gaap:LitigationStatus

us-gaap:NoninterestBearingDepositLiabilities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:OtherLiabilities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:OtherLongTermDebt
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:DebtInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:OtherRealEstate

us-gaap:OtherShortTermInvestments
us-gaap:ConsolidatedEntities

us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForFederalHomeLoanBankDebt

us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForOtherArrangements

us-gaap:PreferredStockValue
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:RiskWeightedAssets

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivable

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivableLeasePaymentsToBeReceivedAfterRollingYearFive

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivableLeasePaymentsToBeReceivedRollingYearFive

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivableLeasePaymentsToBeReceivedRollingYearThree

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivableLeasePaymentsToBeReceivedRollingYearTwo

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextRollingTwelveMonths

us-gaap:SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedRollingYearFour

us-gaap:SecuritiesBorrowedLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType, us-gaap:Vesting
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:Vesting

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:SharePrice
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:ShortTermBorrowings
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithRegulatoryApproval
us-gaap:ConsolidatedEntities
us-gaap:SubordinatedDebt
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:DebtInstrument

us-gaap:TimeDepositMaturitiesAfterYearFive

us-gaap:TimeDepositMaturitiesNextRollingTwelveMonths

us-gaap:TimeDepositMaturitiesYearFive

us-gaap:TimeDepositMaturitiesYearFour

us-gaap:TimeDepositMaturitiesYearThree

us-gaap:TimeDepositMaturitiesYearTwo

us-gaap:TimeDeposits
cma:CertificatesOfDepositAndOtherDepositsWithStatedMaturity
us-gaap:TimeDeposits100000OrMore
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:TradingSecurities
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:ConsolidatedEntities
us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Interest Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Derivative Liabilities
Noncurrent Liabilities
Long Term Debt
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Declared
CashFlow
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInFinancingActivities
Payments For Repurchase Of Common Stock
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Dividends Common Stock Cash
BanksAndOrInsurance
Derivative Asset Collateral Obligation To Return Cash Offset
AssetsBanks
Property Plant And Equipment Net
LiabilitiesBanks
Short Term Borrowings

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:CommonStockValue ████████████████████████████████████████▅▅▅▅▅▅▁1141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01019.01019.01019.01019.01019.01019.0894.0NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▁▂▂▂▂▂▂▂▃▃▄▄▅▅▅▅▆▆▅▅▅▅▆▆▆▆▆▆▆▆▆▆▇▇▇▇████▆▆▆▆▆▆▃133.9139.6139.2139.1139.0139.0142.1144.1149.8155.4160.1165.9170.9172.5172.9174.3175.9177.4175.3172.1173.9175.1175.7177.2178.4178.1179.0180.2180.9181.7182.3183.7185.2186.8188.3191.4194.3197.1197.3198.9176.8176.8176.5176.5176.3176.3151.2NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█138.0141.0NA140.0139.0141.0NA148.0153.0160.0NA170.0174.0175.0NA177.0179.0180.0NA176.0177.0176.0NA181.0182.0182.0NA185.0186.0187.0NA187.0187.0187.0NA191.0194.0196.0NANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█136.0140.0NA139.0139.0141.0NA147.0152.0158.0NA167.0171.0172.0NA174.0175.0175.0NA171.0173.0173.0NA176.0176.0176.0NA179.0179.0180.0NA182.0183.0185.0NA190.0194.0195.0NANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ██▆▆▄▁▇▇▇▇▇▇▇▆▄▅▅▅▄▄▄▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▁▁▂▂▂2.352.461.51.450.81-0.461.871.981.952.141.911.891.91.620.651.291.151.150.950.870.60.340.650.760.760.750.830.850.830.760.640.80.770.710.680.610.730.660.480.510.540.580.540.340.4-0.46-0.42-0.1-0.11-0.16
us-gaap:EarningsPerShareDiluted ██▆▆▄▁▇▇▇▇▇▇▇▆▄▅▅▅▄▄▄▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▁▁▂▂▂2.322.431.491.440.8-0.461.851.961.942.111.881.861.871.590.631.261.131.110.920.840.580.340.640.740.730.730.80.820.80.730.620.780.760.70.680.610.730.660.480.510.530.570.530.330.39-0.46-0.42-0.1-0.11-0.16
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
 Net profit Margin us-gaap:StatementBusinessSegments cma:BusinessBank█▅▆▆▆▂▃▃▃▃▃▃▁▁115.0103.0104.0106.0104.089.091.093.093.092.091.092.083.084.0NANA103.0103.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:StatementBusinessSegments cma:RetailBank▃▃▃▃▁▄▄▄▅▄▆▆██27.027.026.025.021.028.029.030.031.029.035.034.038.039.0NANA46.045.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:StatementBusinessSegments cma:WealthManagement█▃▁▁▂▆▄▅▄▂▄▃▄▄70.064.062.062.063.068.066.067.065.063.065.064.066.065.0NANA63.061.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▆▄▆▄▃▇▇▇██▆▆▆▄▃▅▅▅▃▄▄▄▂▄▃▄▃▄▄▅▆▄▂▄▁▄▄▄▁▄▄▃▁▃▄▃313.0181.0267.0169.097.0344.0370.0338.0429.0435.0312.0296.0290.0178.0107.0228.0221.0206.073.0152.0137.0161.031.0187.0109.0176.054.0141.0172.0205.0267.0144.015.0137.0-30.0165.0169.0160.0-30.0176.0170.0110.0-55.061.0133.085.0NANANANA
us-gaap:IncomeTaxExpenseBenefit ▅▅▄▄▃▂▅▅▅▅▅▄▅▄█▅▅▄▄▄▄▃▄▄▄▄▄▄▄▄▃▄▄▄▄▃▄▄▃▃▄▃▃▃▃▂▁▂▁▂93.098.063.048.027.0-21.082.080.087.085.090.063.093.054.0218.0108.099.066.062.064.042.025.041.063.064.061.070.073.070.064.035.054.050.050.055.036.050.048.033.028.041.035.030.07.023.0-5.0-42.0-29.0-59.0-1.0
us-gaap:IncomeTaxesPaidNet ▆▄▄▅▆▄▅▆█▄▆▅▆▄▆▇█▄▅▅▄▄▅▅▆▁▆▅▇▄▄▆▄▄▄▃▆▄▅▄▅▄▆▅▂▆95.01.08.056.074.03.045.060.0149.012.075.031.092.02.089.0117.0131.0-1.040.051.013.02.042.057.092.0-103.064.044.0110.00.011.082.021.01.08.0-26.059.05.025.01.033.014.060.029.0-50.069.0NANANANA
us-gaap:InterestExpense ▁▁▁▂▂▄▅▆▆▅▄▄▃▂▂▂▂▂▂▂▂▁▁▂▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▄▆▇█14.016.020.026.040.096.0115.0125.0124.0104.090.076.060.041.033.033.029.026.029.030.028.025.024.026.023.022.023.022.025.025.026.027.029.030.032.033.035.035.037.040.040.039.040.052.054.061.083.0126.0150.0179.0
us-gaap:InterestExpenseLongTermDebt ▁▁▁▁▃▆▇███▇▆▅▄▃▃▃▂▃▃▂▂▂▂▂▁▂▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▄▄▄9.09.010.011.019.040.045.050.051.051.047.040.032.025.020.019.020.017.019.020.018.015.014.015.012.011.012.011.014.014.014.014.014.015.016.016.017.016.016.016.017.017.015.025.025.026.0NANANANA
us-gaap:InterestIncomeExpenseNet ▃▃▄▃▄▅▆▇████▇▆▆▆▅▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▂▁▁▂▂▂▂▁▁▂▁465.0443.0469.0458.0471.0513.0544.0586.0603.0606.0614.0599.0590.0549.0545.0546.0500.0470.0455.0450.0445.0447.0433.0422.0421.0413.0415.0414.0416.0410.0430.0412.0414.0416.0424.0427.0435.0443.0444.0423.0391.0395.0405.0404.0422.0415.0396.0385.0402.0384.0
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ██▆▆▄▁▇▇▇█▇██▇▄▆▆▆▅▅▄▃▄▄▄▄▅▅▅▅▄▅▅▄▄▄▅▄▄▄▄▄▄▃▃▁▁▂▂▂321.0343.0209.0203.0112.0-65.0267.0290.0297.0337.0308.0316.0324.0279.0112.0224.0202.0200.0163.0148.0103.059.0115.0134.0134.0132.0148.0152.0149.0137.0115.0145.0141.0132.0128.0116.0142.0129.095.097.095.0102.095.059.069.0-71.0-62.0-16.0-16.0-24.0
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▃▁▄▃▃█▄▄▅▄▃▃▃▂▃▃▃▃▂▃▃▄▂▄▃▄▂▃▃▄▅▃▁▃▁▄▃▃▂-15.0-169.052.0-42.0-16.0409.0101.046.0131.096.02.0-22.0-36.0-103.0-5.02.018.04.0-91.03.033.0101.0-84.051.0-26.042.0-95.0-13.021.066.0150.0-3.0-128.03.0-160.048.025.030.0-126.0NANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome▃▁▄▃▃█▄▄▅▄▃▃▃▂▃▃▃▃▂▃▃▄▂▄▃▄▂▃▃▄▅▃▁▃▁▄▃▃▂-15.0-169.052.0-42.0-16.0409.0101.046.0131.096.02.0-22.0-36.0-103.0-5.02.018.04.0-91.03.033.0101.0-84.051.0-26.042.0-95.0-13.021.066.0150.0-3.0-128.03.0-160.048.025.030.0-126.0NANANANANANANANANANANA
us-gaap:ProfitLoss ██▆▆▄▁▇▇▇█▇▇█▇▄▆▆▆▅▅▄▃▄▄▄▄▅▅▅▄▄▅▅▄▄▄▅▄▄▄▄▄▄▃▃▃▂▂▂▂328.0350.0215.0211.0113.0-65.0269.0292.0298.0339.0310.0318.0326.0281.0112.0226.0203.0202.0164.0149.0104.060.0116.0136.0135.0134.0149.0154.0151.0139.0117.0147.0143.0134.0130.0117.0144.0130.096.098.096.0103.096.059.070.052.0-29.019.018.09.0
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▄▃▃▂▁▂▂▂▁▃▂▂▂212.0194.0192.0193.0188.0185.0186.0190.0189.0184.0192.0190.0187.0188.0NANA212.0209.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:Assets ███▇▇▆▅▅▅▄▄▅▅▅▅▅▅▅▅▅▅▄▅▅▄▄▄▄▃▃▃▃▃▃▃▃▃▃▂▂▁▁▁▁▁▂▂88355.086291.088129.083631.084397.076337.073402.072848.072537.070690.070818.071448.071987.072335.071567.072017.071447.072976.072978.074124.071280.069007.071877.071012.069945.069336.069190.068887.065325.065681.065227.064670.062947.064885.065359.063314.062650.062593.061008.060888.054141.055017.053667.055004.055885.057106.059249.0NANANA
us-gaap:Liabilities ███▇▇▆▅▅▅▄▄▄▄▅▄▄▄▅▅▅▄▄▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▂▂▁▁▁▁▁▂▂80424.078139.080079.075757.076595.068935.066075.065648.065214.063281.063311.063662.063908.064335.063604.063983.063462.065046.065182.066397.063586.061363.064317.063390.062422.061836.061788.061454.057956.058398.058074.057701.056036.057897.058417.056230.055622.055608.054140.053937.048103.049140.047874.049147.050093.051438.052220.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity ███▇▇▆▅▅▅▄▄▅▅▅▅▅▅▅▅▅▅▄▅▅▄▄▄▄▃▃▃▃▃▃▃▃▃▃▂▂▁▁▁▁▁▂▂88355.086291.088129.083631.084397.076337.073402.072848.072537.070690.070818.071448.071987.072335.071567.072017.071447.072976.072978.074124.071280.069007.071877.071012.069945.069336.069190.068887.065325.065681.065227.064670.062947.064885.065359.063314.062650.062593.061008.060888.054141.055017.053667.055004.055885.057106.059249.0NANANA
us-gaap:TierOneRiskBasedCapital NANA4000.0NANANA4099.999999999999NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity cma:ComericaBankNANA7278.0NANANA7199.0NANANA7229.0NANANA7121.0NANANA7120.0NANANA7081.0NANANA7051.0NANANA6803.0NANANA6700.0NANANA6596.0NANANA6073.0NANANANANANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity cma:ComericaIncorporatedNANA7313.0NANANA6919.0NANANA7470.0NANANA7773.0NANANA7540.0NANANA7350.0NANANA7169.0NANANA6895.0NANANA6705.0NANANA6582.0NANANA6027.0NANANA7704.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue █▇█▅▆▂▃▂▂▂▂▃▃▃▃▃▃▄▃▄▂▁▃▃▃▃▃▄▂▃▃▃▂▃▂▂▂▂▂▃▂▂▁▂▂▂▃16501.014871.015767.011141.013311.04855.05818.04117.03581.03481.04561.05839.05660.06836.05845.06204.05631.08319.07218.08040.04110.03002.06147.07200.05965.05962.06071.07787.03894.05620.06451.07088.03925.05597.04534.03938.04141.03960.03556.05198.03466.04445.02083.03994.04225.04588.05617.0NANANA
us-gaap:Land NANA86.0NANANA86.0NANANA85.0NANANA85.0NANANA86.0NANANA87.0NANANA88.0NANANA90.0NANANA90.0NANANA94.0NANANA92.0NANANA93.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA1418.0NANANA1417.0NANANA1419.0NANANA1382.0NANANA1416.0NANANA1439.0NANANA1404.0NANANA1435.0NANANA1415.0NANANA1451.0NANANA1373.0NANANA1355.0NANANA
us-gaap:FurnitureAndFixturesGross NANA485.0NANANA513.0NANANA492.0NANANA484.0NANANA499.0NANANA490.0NANANA508.0NANANA515.0NANANA509.0NANANA527.0NANANA503.0NANANA508.0NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA959.0NANANA960.0NANANA944.0NANANA916.0NANANA915.0NANANA889.0NANANA872.0NANANA841.0NANANA793.0NANANA776.0NANANA743.0NANANA711.0NANANA
us-gaap:PropertyPlantAndEquipmentNet ▁▁▁▁▁▁▁▂▂▂▂▂▂▂▁▂▂▂▃▃▄▄▄▄▄▃▃▃▄▅▅▆▆▆▆▆▇███▇▇▆▇▆▇▇454.0456.0459.0456.0450.0454.0457.0467.0470.0474.0475.0472.0467.0468.0466.0467.0484.0488.0501.0528.0544.0541.0550.0541.0541.0531.0532.0524.0562.0583.0594.0604.0604.0618.0622.0625.0667.0670.0675.0685.0641.0637.0630.0639.0634.0637.0644.0NANANA
us-gaap:Goodwill NANA635.0NANANA635.0NANANA635.0NANANA635.0NANANA635.0NANANA635.0NANANA635.0NANANA635.0NANANA635.0NANANA635.0635.0NANA150.0NANANA150.0NANANA
 us-gaap:Goodwill us-gaap:StatementBusinessSegments cma:BusinessBankNANA473.0NANANA473.0NANANA473.0NANANA380.0NANANA380.0NANANA380.0NANANA380.0NANANA380.0NANANA380.0NANANA380.0380.0NANA90.0NANANA90.0NANANA
 us-gaap:Goodwill us-gaap:StatementBusinessSegments cma:RetailBankNANA101.0NANANA101.0NANANA101.0NANANA194.0NANANA194.0NANANA194.0NANANA194.0NANANA194.0NANANA194.0NANANA194.0194.0NANA47.0NANANA47.0NANANA
 us-gaap:Goodwill us-gaap:StatementBusinessSegments cma:WealthManagementNANA61.0NANANA61.0NANANA61.0NANANA61.0NANANA61.0NANANA61.0NANANA61.0NANANA61.0NANANA61.0NANANA61.0NANANA13.0NANANA13.0NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CoreDepositsNANA1.0NANANA2.0NANANA4.0NANANA6.0NANANA8.0NANANA10.0NANANA13.0NANANA16.0NANANA20.0NANANA29.0NANANANANANANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NA15.04.034.011.013.042.092.0104.0145.0166.0153.0169.0165.0141.0252.0224.0230.0217.0187.0166.0173.0199.0132.0135.0126.0130.0200.0212.0224.0256.0329.0294.0NA254.0NANANA395.0NANANA383.0NANANA158.0NANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA306.0NANANA329.0320.0329.0318.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel,us-gaap:FairValueByMeasurementFrequency,us-gaap:FinancialInstrument us-gaap:FairValueInputsLevel1,us-gaap:FairValueMeasurementsRecurring,us-gaap:EquitySecurities█▅▇▅▄▁▅▄▃▂▂▁63.054.060.053.050.040.054.049.047.043.043.040.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementFrequency,us-gaap:FinancialInstrument us-gaap:FairValueMeasurementsRecurring,us-gaap:EquitySecurities█▅▇▅▄▁▅▄▃▂▂▁63.054.060.053.050.040.054.049.047.043.043.040.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:LongTermDebt ▁▁▄▄▄▅▅▅▄▅▄▄▃▃▃▃▃▃▃▄▄▁▁▁▁▁▁▁▁▂▂▂▂▃▃▃▃▃▃▃▃▄▄▅▆▇█2854.02852.05728.05754.06521.07434.07269.07311.06558.06848.06463.06418.05583.05594.04622.04637.05143.05153.05160.05890.05921.03109.03058.03100.02841.02686.02679.02669.02620.03534.03543.03565.03601.04699.04720.04740.04742.04919.04944.05009.05206.06116.06138.07239.09041.09915.011060.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▇██▇▇▆▆▅▆▆▆▇██▇██▇▇▇▇▇▆▇▆▆▆▆▆▆▅▅▅▅▅▅▅▅▄▅▂▂▁▂▁▁▅7931.08152.08050.07874.07802.07402.07327.07200.07323.07409.07507.07786.08079.08000.07963.08034.07985.07930.07796.07727.07694.07644.07560.07622.07523.07500.07402.07433.07369.07283.07153.06969.06911.06988.06942.07084.07028.06985.06868.06951.06038.05877.05793.05857.05792.05668.07029.0NANANA
us-gaap:CommonStockValue ████████████████████████████████████████▅▅▅▅▅▅▁1141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01141.01019.01019.01019.01019.01019.01019.0894.0NANANA
us-gaap:AdditionalPaidInCapitalCommonStock ████████████████████████████████████████▅▄▅▅▅▅▁2163.02183.02185.02179.02173.02168.02174.02172.02168.02159.02148.02144.02144.02134.02122.02112.02110.02106.02135.02174.02165.02158.02173.02165.02158.02188.02188.02183.02175.02182.02179.02171.02160.02157.02162.02153.02144.02154.02170.02162.01472.01464.01481.01473.01467.01468.0740.0NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▇▇▇▇▇▆▆▆▆▅▅▅▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁10202.09975.09623.09511.09404.09389.09538.09369.09176.08979.08781.08587.08374.08110.07887.07746.07580.07431.07331.07262.07157.07097.07084.07007.06908.06841.06744.06631.06520.06414.06321.06239.06127.06020.05931.05831.05744.05630.05546.05471.05395.05317.05247.05171.05124.05064.05161.0NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▆█▇██▄▃▃▂▁▁▁▂▂▃▃▃▃▄▄▄▃▃▃▃▃▄▄▄▃▂▂▃▃▄▄▄▃▄▄▃▃▄▄▄▃-120.0-105.0168.0116.0158.0174.0-235.0-336.0-382.0-513.0-609.0-611.0-589.0-553.0-451.0-359.0-361.0-379.0-383.0-292.0-295.0-328.0-429.0-345.0-396.0-370.0-412.0-317.0-304.0-325.0-391.0-541.0-538.0-410.0-413.0-253.0-301.0-326.0-356.0-230.0-308.0-382.0-389.0-238.0-240.0-303.0-336.0NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:AdjustmentsForChangeInAccountingPrinciple srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment██▁-7.0-3.0-104.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:AdjustmentsForChangeInAccountingPrinciple srt:ScenarioPreviouslyReportedNANA168.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities srt:ParentCompanyNANA168.0NANANA-235.0NANANA-609.0NANANA-451.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:TreasuryStockValue █▇▇▇▇▇▇▇▆▆▅▄▃▃▃▃▃▂▂▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁5849.05436.05461.05467.05469.05470.05291.05146.04780.04357.03954.03475.02991.02832.02736.02606.02485.02369.02428.02558.02474.02424.02409.02346.02288.02300.02259.02205.02163.02129.02097.02041.01979.01920.01879.01788.01700.01614.01633.01593.01540.01541.01565.01568.01578.01580.01581.0NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▃▇▂▂▂▃▁▂▃█▃▃▄█▄▂▂▆▂▂▂▇▃▂▃▅▃▃▃▅▃▃▃▄▃▃▃▄▃▃▃▄▃▄▃▂7.022.06.06.04.08.02.05.08.024.07.07.010.024.010.05.06.018.04.05.05.020.09.05.08.016.07.09.08.014.08.09.08.010.08.08.08.013.08.08.08.013.08.013.07.04.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▄▄▂▃█▄▆▅▃█▅▄▅▄▄▄▆▃▄▂▄▄▄▃▅▃▄▃▄▅▄▂▅▂▅▅▄▃▅▅▄▅▄▆▅-156.0159.0208.0-24.045.0699.0221.0444.0385.040.0649.0353.0256.0358.0245.0202.0249.0407.096.0158.0-6.0245.0199.0269.056.0338.074.0219.0132.0214.0386.0165.09.0276.09.0313.0274.0158.0146.0294.0312.0150.0291.0255.0431.0309.0NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▃█▂▃▁▄▃▂▃▂▃▃▃▃▃▂▃▃▄▂▃▂▃▂▃▂▃▂▂▂▄▃▃▂▂▂▃▂▃▃▄▂▃▃▄681.01008.09232.0-1286.0190.0-3534.01096.0231.0-1582.0-239.0-1183.0743.0-569.0-147.056.0205.0-1172.0773.037.01073.0-1122.0-258.0-2232.0401.0-923.0-501.0-1416.0190.0-1389.0-1128.0-1190.01391.033.0940.0-1715.0-818.0-902.0-303.0-1993.0197.0-245.01086.0-971.0616.0379.01182.0NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▂▆▂█▄▃▃▄▂▂▂▂▃▃▃▂▃▂▅▄▁▄▃▃▃▃▅▃▃▃▄▂▃▄▃▃▃▃▄▂▄▂▂▂▁1105.0-2063.04390.0-860.08221.01872.0384.0-139.01297.0-881.0-744.0-917.0-863.0780.0-660.0166.0-1765.0-79.0-955.02699.02236.0-3132.0980.0565.0870.054.0-374.03484.0-469.083.0167.01607.0-1714.0-153.02302.0302.0809.0549.0205.01241.0-1046.01126.0-1231.0-1102.0-1173.0-2520.0NANANANA
us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease █▁1630.0-896.0NANA8456.0-963.01701.0536.0100.0-1080.0-1278.0179.0-1176.0991.0-359.0573.0-2688.01101.0-822.03930.01108.0-3145.0-1053.01235.03.0-109.0-1716.03893.0-1726.0-831.0-637.03163.0-1672.01063.0596.0-203.0181.0404.0-1642.01732.0-979.02362.0-1911.0-231.0-363.0-1029.0NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect NANANA-2170.08456.0-963.0NA536.0100.0-1080.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▆▆▆▅▅▄▅▅▅▅▅▆▅▅█▅▅▅▆▅▅▄▅▅▅▅█▆▅▅▅▅▅▆▇▅▆▆▆▆▅▆▁▅█▃30.039.015.0-9.0-22.0-73.08.08.00.0-4.0-13.023.07.07.0127.0-29.0-18.0-1.023.0-22.0-13.0-39.0-19.0-27.0-4.0-21.0123.020.0-8.0-5.0-14.0-32.0-3.029.089.05.042.022.027.029.010.013.0-198.0-5.0127.0-126.0NANANANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet █▅▅▇▆▁▅▄▄▇▂▅▅▄▅▅▄▃▅▅▆▄▅▄▆▃▇▄▅▄▃▅▇▄█▄▅▄▅▄▄▄▂▅▄▃410.0104.053.0266.0191.0-399.0118.0-25.0-64.0289.0-282.0113.040.0-55.048.075.0-43.0-137.0103.057.0211.0-16.042.0-80.0123.0-190.0282.0-10.063.0-92.0-190.058.0245.0-110.0392.0-66.011.0-77.061.0-92.0-66.0-16.0-271.013.0-27.0-201.0NANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▄▄▂▃█▄▆▅▃█▅▄▅▄▄▄▆▃▄▂▄▄▄▃▅▃▄▃▄▅▄▂▅▂▅▅▄▃▅▅▄▅▄▆▅-156.0159.0208.0-24.045.0699.0221.0444.0385.040.0649.0353.0256.0358.0245.0202.0249.0407.096.0158.0-6.0245.0199.0269.056.0338.074.0219.0132.0214.0386.0165.09.0276.09.0313.0274.0158.0146.0294.0312.0150.0291.0255.0431.0309.0NANANANA
us-gaap:ProfitLoss ██▆▆▄▁▇▇▇█▇▇█▇▄▆▆▆▅▅▄▃▄▄▄▄▅▅▅▄▄▅▅▄▄▄▅▄▄▄▄▄▄▃▃▃▂▂▂▂328.0350.0215.0211.0113.0-65.0269.0292.0298.0339.0310.0318.0326.0281.0112.0226.0203.0202.0164.0149.0104.060.0116.0136.0135.0134.0149.0154.0151.0139.0117.0147.0143.0134.0130.0117.0144.0130.096.098.096.0103.096.059.070.052.0-29.019.018.09.0
us-gaap:ShareBasedCompensation ▃▇▂▂▂▃▁▂▃█▃▃▄█▄▂▂▆▂▂▂▇▃▂▃▅▃▃▃▅▃▃▃▄▃▃▃▄▃▃▃▄▃▄▃▂7.022.06.06.04.08.02.05.08.024.07.07.010.024.010.05.06.018.04.05.05.020.09.05.08.016.07.09.08.014.08.09.08.010.08.08.08.013.08.08.08.013.08.013.07.04.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▃█▂▃▁▄▃▂▃▂▃▃▃▃▃▂▃▃▄▂▃▂▃▂▃▂▃▂▂▂▄▃▃▂▂▂▃▂▃▃▄▂▃▃▄681.01008.09232.0-1286.0190.0-3534.01096.0231.0-1582.0-239.0-1183.0743.0-569.0-147.056.0205.0-1172.0773.037.01073.0-1122.0-258.0-2232.0401.0-923.0-501.0-1416.0190.0-1389.0-1128.0-1190.01391.033.0940.0-1715.0-818.0-902.0-303.0-1993.0197.0-245.01086.0-971.0616.0379.01182.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▂▆▂█▄▃▃▄▂▂▂▂▃▃▃▂▃▂▅▄▁▄▃▃▃▃▅▃▃▃▄▂▃▄▃▃▃▃▄▂▄▂▂▂▁1105.0-2063.04390.0-860.08221.01872.0384.0-139.01297.0-881.0-744.0-917.0-863.0780.0-660.0166.0-1765.0-79.0-955.02699.02236.0-3132.0980.0565.0870.054.0-374.03484.0-469.083.0167.01607.0-1714.0-153.02302.0302.0809.0549.0205.01241.0-1046.01126.0-1231.0-1102.0-1173.0-2520.0NANANANA
us-gaap:PaymentsOfDividendsCommonStock ▇▇▇▇▇▇█████▅▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▃▂▂▂▂▂▂▁▁▁▁95.095.093.091.096.095.099.0100.0104.099.0102.057.051.053.052.047.041.040.040.038.037.037.038.037.036.036.036.036.034.031.031.031.032.029.028.029.020.020.020.018.017.018.09.09.08.08.0NANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▇▁▁▁▁▄▃▆▇▇██▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁451.08.00.00.00.0199.0152.0370.0429.0443.0501.0500.0169.0168.0148.0147.0132.0125.099.097.065.049.065.060.049.066.060.059.061.080.073.072.072.074.093.090.089.036.041.054.00.021.00.00.02.02.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:ConsolidatedEntities,us-gaap:DebtInstrument srt:ParentCompany,cma:ThreePointEightZeroPercentSubNotesDue2026NANA3.7999999999999996e-06NANA3.7999999999999996e-083.7999999999999996e-083.7999999999999996e-083.7999999999999996e-083.7999999999999996e-083.7999999999999996e-083.7999999999999996e-08NANA3.7999999999999996e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:ConsolidationItems,us-gaap:DebtInstrument us-gaap:OperatingSegments,cma:ThreePointEightZeroPercentSubNotesDue2026▄▄3.7999999999999996e-063.7999999999999996e-06NA3.7999999999999996e-063.7999999999999996e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value1141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141101910191019101910191019894
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.31.31.41.41.51.61.61.61.61.61.61.61.61.61.61.61.61.61.51.61.71.61.61.61.61.61.71.71.71.71.81.81.81.71.81.81.81.91.91.91.91.91.91.81.81.5

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesOutstanding

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
Value133139139139139139142144149155160165170172172174175177175172173175175177178178179180180181182183185186188191194197197198176176176176176176151150150
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value138141140139141148153160170174175177179180176177176181182182185186187187187187191194196
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value136140139139141147152158167171172174175175171173173176176176179179180182183185190194195
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value2.352.461.51.450.81-0.461.871.981.952.141.911.891.91.620.651.291.151.150.950.870.60.340.650.760.760.750.830.850.830.760.640.80.770.710.680.610.730.660.480.510.540.580.540.340.4-0.46-0.42-0.1-0.11-0.16
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareBasic us-gaap:AdjustmentsForChangeInAccountingPrinciple

srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment


Earnings
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.030.030.040.04
Percentage of EarningsPerShareBasic1.31.24.9-8.7

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value2.322.431.491.440.8-0.461.851.961.942.111.881.861.871.590.631.261.131.110.920.840.580.340.640.740.730.730.80.820.80.730.620.780.760.70.680.610.730.660.480.510.530.570.530.330.39-0.46-0.42-0.1-0.11-0.16
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareDiluted us-gaap:AdjustmentsForChangeInAccountingPrinciple

srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment


Earnings
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.030.020.040.04
Percentage of EarningsPerShareDiluted1.30.85.0-8.7

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3131812671699734437033842943531229629017810722822120673152137161311871091765414117220526714415137-30.0165169160-30.0176170110-55.06113385
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating65.339.454.634.919.056.556.147.559.061.344.343.944.630.218.539.441.841.515.131.729.034.16.841.724.540.512.332.339.047.158.632.83.430.7-6.635.936.033.5-6.238.039.425.3-12.413.427.917.9

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value9398634827-21.082808785906393542181089966626442254163646170737064355450505536504833284135307.023-5.0-42.0-29.0-59.0-1.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating19.421.412.99.95.3-3.412.411.312.012.012.89.314.39.237.718.718.713.312.813.38.95.39.014.114.414.016.016.715.914.77.712.311.311.212.17.810.610.06.96.09.58.16.71.54.8-1.1-8.8-5.7-10.7-0.2

us-gaap:IncomeTaxExpenseBenefit us-gaap:AdjustmentsForChangeInAccountingPrinciple

srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.02.01.02.0
Percentage of IncomeTaxExpenseBenefit1.12.03.7-9.5
Percentage of InterestAndDividendIncomeOperating0.20.40.20.3
Percentage of InterestAndDividendIncomeOperating srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment0.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value-3.0-3.0-2.0-3.0
Percentage of IncomeTaxExpenseBenefit-3.2-3.1-7.414.3
Percentage of InterestAndDividendIncomeOperating-0.6-0.7-0.4-0.5
Percentage of InterestAndDividendIncomeOperating us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Income
Period End2020-09-302020-06-302019-09-302019-06-30
Value-4.0-2.0-3.0-2.0
Percentage of IncomeTaxExpenseBenefit-8.3-7.4-3.8-2.3
Percentage of InterestAndDividendIncomeOperating-0.8-0.4-0.4-0.3
Percentage of InterestAndDividendIncomeOperating us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementBusinessSegments

cma:BusinessBank


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value111113886747-20.0797471826177685998991009279977544829994
Percentage of IncomeTaxExpenseBenefit119.4115.3139.7139.6174.195.296.392.581.696.567.8122.273.1109.345.091.7101.0139.4127.4151.6178.6176.0200.0157.1146.9
Percentage of InterestAndDividendIncomeOperating23.224.618.013.89.2-3.312.010.49.811.58.711.410.510.017.017.118.918.516.320.215.99.317.922.121.2
Percentage of InterestAndDividendIncomeOperating cma:BusinessBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:CaliforniaDomain


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value29401317
Percentage of IncomeTaxExpenseBenefit31.240.848.1-81.0
Percentage of InterestAndDividendIncomeOperating6.18.72.52.8
Percentage of InterestAndDividendIncomeOperating cma:CaliforniaDomain0.00.00.00.0

cma:Finance


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-26.0-25.0-25.0-26.0-20.0-8.0-10.0-8.0-4.0-4.0-1.0-8.06.01.0-7.0-10.0-17.0-24.0-25.0-39.0-38.0-38.0-45.0-57.0-53.0
Percentage of IncomeTaxExpenseBenefit-28.0-25.5-39.7-54.2-74.138.1-12.2-10.0-4.6-4.7-1.1-12.76.51.9-3.2-9.3-17.2-36.4-40.3-60.9-90.5-152.0-109.8-90.5-82.8
Percentage of InterestAndDividendIncomeOperating-5.4-5.4-5.1-5.4-3.9-1.3-1.5-1.1-0.6-0.6-0.1-1.20.90.2-1.2-1.7-3.2-4.8-5.2-8.1-8.0-8.1-9.8-12.7-11.9
Percentage of InterestAndDividendIncomeOperating cma:Finance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:FinanceOther


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-28.0-25.0-27.0-27.0-19.0-7.0-10.0-11.0-4.0-16.016-27.08.0-21.092-11.0-24.0-45.0-23.0-43.0-39.0-36.0-46.0-54.0-54.0
Percentage of IncomeTaxExpenseBenefit-30.1-25.5-42.9-56.2-70.433.3-12.2-13.8-4.6-18.817.8-42.98.6-38.942.2-10.2-24.2-68.2-37.1-67.2-92.9-144.0-112.2-85.7-84.4
Percentage of InterestAndDividendIncomeOperating-5.8-5.4-5.5-5.6-3.7-1.1-1.5-1.5-0.6-2.32.3-4.01.2-3.615.9-1.9-4.5-9.1-4.8-9.0-8.2-7.6-10.1-12.1-12.2
Percentage of InterestAndDividendIncomeOperating cma:FinanceOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:MichiganDomain


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value29228.016
Percentage of IncomeTaxExpenseBenefit31.222.429.6-76.2
Percentage of InterestAndDividendIncomeOperating6.14.81.62.6
Percentage of InterestAndDividendIncomeOperating cma:MichiganDomain0.00.00.00.0

cma:Other1


Income
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-2.0-2.0-1.01.01.01.0-3.00.0-12.017-20.02.0-22.099-1.0-7.0-21.02.0-4.0-1.02.0-1.03.0-1.0
Percentage of IncomeTaxExpenseBenefit-2.2-3.2-2.13.7-4.81.2-3.80.0-14.118.9-31.72.2-40.745.4-0.9-7.1-31.83.2-6.2-2.48.0-2.44.8-1.6
Percentage of InterestAndDividendIncomeOperating-0.4-0.4-0.20.20.20.2-0.40.0-1.72.4-3.00.3-3.717.1-0.2-1.3-4.20.4-0.8-0.20.4-0.20.7-0.2
Percentage of InterestAndDividendIncomeOperating cma:Other10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:OtherMarkets


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value34303024214.0172216191415151521172016171821248.02516
Percentage of IncomeTaxExpenseBenefit36.630.647.650.077.8-19.020.727.518.422.415.623.816.127.89.615.720.224.227.428.150.096.019.539.725.0
Percentage of InterestAndDividendIncomeOperating7.16.56.15.04.10.72.63.12.22.72.02.22.32.53.62.93.83.23.53.84.45.11.85.63.6
Percentage of InterestAndDividendIncomeOperating cma:OtherMarkets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:RetailBank


Income
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value1.0-1.00.0-4.00.03.05.07.08.06.05.010.06.01410.09.06.0-3.00.0-1.05.0-4.07.010.0
Percentage of IncomeTaxExpenseBenefit1.1-1.60.0-14.8-0.03.76.28.09.46.77.910.811.16.49.39.19.1-4.80.0-2.420.0-9.811.115.6
Percentage of InterestAndDividendIncomeOperating0.2-0.20.0-0.80.00.50.71.01.10.90.71.51.02.41.71.71.2-0.60.0-0.21.1-0.91.62.3
Percentage of InterestAndDividendIncomeOperating cma:RetailBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:TexasDomain


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value29315.0-50.0
Percentage of IncomeTaxExpenseBenefit31.231.618.5238.1
Percentage of InterestAndDividendIncomeOperating6.16.81.0-8.2
Percentage of InterestAndDividendIncomeOperating cma:TexasDomain0.00.00.00.0

cma:WealthManagement


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value9.010.03.08.03.06.09.01213117.09.07.010.01410.014139.010.07.0129.01114
Percentage of IncomeTaxExpenseBenefit9.710.24.816.711.1-28.611.015.014.912.97.814.37.518.56.49.314.119.714.515.616.748.022.017.521.9
Percentage of InterestAndDividendIncomeOperating1.92.20.61.70.61.01.41.71.81.51.01.31.11.72.41.72.62.61.92.11.52.52.02.53.2
Percentage of InterestAndDividendIncomeOperating cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:CA


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value21131742373937213432303737403634443043423742
Percentage of IncomeTaxExpenseBenefit43.848.1-81.051.246.244.843.523.354.034.455.617.034.340.454.554.868.871.4172.0102.458.765.6
Percentage of InterestAndDividendIncomeOperating4.32.52.86.45.25.45.23.05.04.95.16.46.47.67.37.09.26.39.19.28.39.5
Percentage of InterestAndDividendIncomeOperating stpr:CA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:MI


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value138.01525273026232522163734383726262835313550
Percentage of IncomeTaxExpenseBenefit27.129.6-71.430.533.834.530.625.639.723.729.617.031.538.456.141.940.666.7140.075.655.678.1
Percentage of InterestAndDividendIncomeOperating2.71.62.53.83.84.13.73.33.73.42.76.45.97.27.55.45.45.97.46.87.811.3
Percentage of InterestAndDividendIncomeOperating stpr:MI0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:TX


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value174.0-50.08.05.06.01916161614313125228.0192.0-41.06.02010.0
Percentage of IncomeTaxExpenseBenefit35.414.8238.19.86.26.922.417.825.417.225.914.228.725.333.312.929.74.8-164.014.631.715.6
Percentage of InterestAndDividendIncomeOperating3.50.8-8.21.20.70.82.72.32.42.52.45.45.44.74.41.74.00.4-8.71.34.52.3
Percentage of InterestAndDividendIncomeOperating stpr:TX0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


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
Value951.08.056743.04560149127531922.089117131-1.04051132.0425792-103.064441100.01182211.08.0-26.0595.0251.033146029-50.069
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating19.80.21.611.614.50.56.88.420.51.710.74.614.20.315.420.224.8-0.28.310.62.70.49.212.720.7-23.714.610.124.90.02.418.74.70.21.8-5.712.61.05.20.27.73.213.56.4-10.514.5

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value14162026409611512512410490766041333329262930282524262322232225252627293032333535374040394052546183126150179
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating2.93.54.15.47.815.817.517.617.114.612.811.39.26.95.75.75.55.26.06.25.95.35.35.85.25.15.35.05.75.75.76.26.56.77.07.27.47.37.78.69.39.09.011.411.312.817.324.727.231.8

Interest Expense Long Term Debt

us-gaap:InterestExpenseLongTermDebt

us-gaap:InterestExpenseLongTermDebt


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
Value9.09.010.011194045505151474032252019201719201815141512111211141414141415161617161616171715252526
Percentage of InterestExpenseLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1.92.02.02.33.76.66.87.07.07.26.75.94.94.23.53.33.83.43.94.23.83.23.13.32.72.52.72.53.23.23.13.23.23.43.53.53.63.33.33.53.93.93.45.55.35.5

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value465443469458471513544586603606614599590549545546500470455450445447433422421413415414416410430412414416424427435443444423391395405404422415396385402384
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating97.196.595.994.692.284.282.582.482.985.487.288.790.893.194.394.394.594.894.093.894.194.794.794.294.894.994.795.094.394.394.393.893.593.393.092.892.692.792.391.490.791.091.088.688.787.282.775.372.868.2

us-gaap:InterestIncomeExpenseNet us-gaap:StatementBusinessSegments

cma:BusinessBank


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value402382413413402380403420420412413413341330347356336332341361355357381378373
Percentage of InterestIncomeExpenseNet86.586.288.190.285.474.174.171.769.768.067.368.957.860.163.765.267.270.674.980.279.879.988.089.688.6
Percentage of InterestAndDividendIncomeOperating83.983.284.585.378.762.461.259.157.858.058.761.252.555.960.061.563.566.970.575.275.175.683.484.484.0
Percentage of InterestAndDividendIncomeOperating cma:BusinessBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:CaliforniaDomain


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value174172169176
Percentage of InterestIncomeExpenseNet37.438.835.934.3
Percentage of InterestAndDividendIncomeOperating36.337.533.128.9
Percentage of InterestAndDividendIncomeOperating cma:CaliforniaDomain0.00.00.00.0

cma:Finance


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-127.0-117.0-120.0-125.0-95.0-44.0-49.0-38.0-24.0-15.0-9.0-16.0261.0-25.0-30.0-49.0-71.0-89.0-114.0-111.0-113.0-158.0-163.0-154.0
Percentage of InterestIncomeExpenseNet-27.3-26.4-25.6-27.3-20.2-8.6-9.0-6.5-4.0-2.5-1.5-2.74.40.2-4.6-5.5-9.8-15.1-19.6-25.3-24.9-25.3-36.5-38.6-36.6
Percentage of InterestAndDividendIncomeOperating-26.5-25.5-24.5-25.8-18.6-7.2-7.4-5.3-3.3-2.1-1.3-2.44.00.2-4.3-5.2-9.3-14.3-18.4-23.8-23.5-23.9-34.6-36.4-34.7
Percentage of InterestAndDividendIncomeOperating cma:Finance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:FinanceOther


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-125.0-114.0-118.0-124.0-91.0-33.0-36.0-23.0-9.01.07.0-1.04013-16.0-20.0-40.0-63.0-83.0-108.0-107.0-108.0-154.0-159.0-152.0
Percentage of InterestIncomeExpenseNet-26.9-25.7-25.2-27.1-19.3-6.4-6.6-3.9-1.50.21.1-0.26.82.4-2.9-3.7-8.0-13.4-18.2-24.0-24.0-24.2-35.6-37.7-36.1
Percentage of InterestAndDividendIncomeOperating-26.1-24.8-24.1-25.6-17.8-5.4-5.5-3.2-1.20.11.0-0.16.22.2-2.8-3.5-7.6-12.7-17.1-22.5-22.6-22.9-33.7-35.5-34.2
Percentage of InterestAndDividendIncomeOperating cma:FinanceOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:MichiganDomain


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value178154161163
Percentage of InterestIncomeExpenseNet38.334.834.231.8
Percentage of InterestAndDividendIncomeOperating37.233.631.526.8
Percentage of InterestAndDividendIncomeOperating cma:MichiganDomain0.00.00.00.0

cma:Other1


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value2.03.02.01.04.01113151516161514129.010.09.08.06.06.04.05.04.04.02.0
Percentage of InterestIncomeExpenseNet0.40.70.40.20.82.12.42.62.52.62.62.52.42.21.71.81.81.71.31.30.91.10.90.90.5
Percentage of InterestAndDividendIncomeOperating0.40.70.40.20.81.82.02.12.12.32.32.22.22.01.61.71.71.61.21.20.81.10.90.90.5
Percentage of InterestAndDividendIncomeOperating cma:Other10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:OtherMarkets


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value1241171141181118692969491929583788387827986908985868785
Percentage of InterestIncomeExpenseNet26.726.424.325.823.616.816.916.415.615.015.015.914.114.215.215.916.416.818.920.020.019.019.920.620.2
Percentage of InterestAndDividendIncomeOperating25.925.523.324.421.714.114.013.512.912.813.114.112.813.214.415.015.515.917.818.818.818.018.819.419.1
Percentage of InterestAndDividendIncomeOperating cma:OtherMarkets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:RetailBank


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value145133130127120125134142146146146141169165171165162160156156155155160158155
Percentage of InterestIncomeExpenseNet31.230.027.727.725.524.424.624.224.224.123.823.528.630.131.430.232.434.034.334.734.834.737.037.436.8
Percentage of InterestAndDividendIncomeOperating30.329.026.626.223.520.520.320.020.120.620.720.926.028.029.628.530.632.332.232.532.832.835.035.334.9
Percentage of InterestAndDividendIncomeOperating cma:RetailBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:TexasDomain


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value114114115115
Percentage of InterestIncomeExpenseNet24.525.724.422.4
Percentage of InterestAndDividendIncomeOperating23.824.822.518.9
Percentage of InterestAndDividendIncomeOperating cma:TexasDomain0.00.00.00.0

cma:WealthManagement


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value43424442404143474647484640414345424141414243464545
Percentage of InterestIncomeExpenseNet9.29.59.49.28.58.07.98.07.67.87.87.76.87.57.98.28.48.79.09.19.49.610.610.710.7
Percentage of InterestAndDividendIncomeOperating9.09.29.08.77.86.76.56.66.36.66.86.86.26.97.47.87.98.38.58.58.99.110.110.010.1
Percentage of InterestAndDividendIncomeOperating cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:CA


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value179176182195203208205206199183180188184178171178181178175190186180
Percentage of InterestIncomeExpenseNet39.137.435.535.834.634.533.833.633.231.032.834.533.735.636.439.140.240.039.143.944.142.8
Percentage of InterestAndDividendIncomeOperating37.034.429.929.628.628.628.929.329.528.230.532.531.833.634.536.837.737.637.141.641.540.5
Percentage of InterestAndDividendIncomeOperating stpr:CA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:MI


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value168159163172185186187187185167169175172167170163169166174182179178
Percentage of InterestIncomeExpenseNet36.733.831.831.631.630.830.930.530.928.330.832.131.533.436.235.837.637.338.942.042.442.3
Percentage of InterestAndDividendIncomeOperating34.731.126.826.126.025.626.326.627.425.728.630.329.731.634.333.735.235.136.939.840.040.1
Percentage of InterestAndDividendIncomeOperating stpr:MI0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:TX


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value117116115121125124122122121117109115123113113111118119121129129130
Percentage of InterestIncomeExpenseNet25.524.622.422.221.320.620.119.920.219.819.921.122.522.624.024.426.226.727.129.830.630.9
Percentage of InterestAndDividendIncomeOperating24.222.718.918.417.617.117.217.317.918.018.519.921.221.422.822.924.625.225.628.228.829.3
Percentage of InterestAndDividendIncomeOperating stpr:TX0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value321343209203112-65.026729029733730831632427911222420220016314810359115134134132148152149137115145141132128116142129959795102955969-71.0-62.0-16.0-16.0-24.0
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating67.074.742.741.921.9-10.740.540.840.947.543.846.849.847.319.438.738.240.333.730.821.812.525.229.930.230.333.834.933.831.525.233.031.829.628.125.230.227.019.821.022.023.521.312.914.5-14.9-12.9-3.1-2.9-4.3

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value-15.0-169.052-42.0-16.040910146131962.0-22.0-36.0-103.0-5.02.0184.0-91.03.033101-84.051-26.042-95.0-13.02166150-3.0-128.03.0-160.0482530-126.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-3.1-36.810.6-8.7-3.167.215.36.518.013.50.3-3.3-5.5-17.5-0.90.33.40.8-18.80.67.021.4-18.411.4-5.99.7-21.7-3.04.815.232.9-0.7-28.90.7-35.110.45.36.3-26.2

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value-15.0-169.052-42.0-16.040910146131962.0-22.0-36.0-103.0-5.02.0184.0-91.03.033101-84.051-26.042-95.0-13.02166150-3.0-128.03.0-160.0482530-126.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-3.1-36.810.6-8.7-3.167.215.36.518.013.50.3-3.3-5.5-17.5-0.90.33.40.8-18.80.67.021.4-18.411.4-5.99.7-21.7-3.04.815.232.9-0.7-28.90.7-35.110.45.36.3-26.2
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value328350215211113-65.02692922983393103183262811122262032021641491046011613613513414915415113911714714313413011714413096989610396597052-29.019189.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating68.576.344.043.622.1-10.740.841.141.047.744.047.150.247.619.439.038.440.733.931.022.012.725.430.430.430.834.035.334.232.025.733.532.330.028.525.430.627.220.021.222.323.721.612.914.710.9-6.13.73.31.6

us-gaap:ProfitLoss us-gaap:AdjustmentsForChangeInAccountingPrinciple

srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value4.03.05.06.0
Percentage of ProfitLoss1.20.94.4-9.2
Percentage of InterestAndDividendIncomeOperating0.80.71.01.0
Percentage of InterestAndDividendIncomeOperating srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment0.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementBusinessSegments

cma:BusinessBank


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value377390287261175-63.02612482382742692642341981761901801771961921549520019418218921421119719817021020719821221121120620117917616717413213489
Percentage of ProfitLoss114.9111.4133.5123.7154.996.997.084.979.980.886.883.071.870.5157.184.188.787.6119.5128.9148.1158.3172.4142.6134.8141.0143.6137.0130.5142.4145.3142.9144.8147.8163.1180.3146.5158.5209.4182.7183.3162.1181.2223.7191.4171.2
Percentage of InterestAndDividendIncomeOperating78.785.058.753.934.2-10.339.634.932.738.638.239.136.033.630.432.834.035.740.540.032.620.143.843.341.043.448.948.444.745.537.347.846.744.446.545.944.943.141.838.740.838.539.128.928.218.7
Percentage of InterestAndDividendIncomeOperating cma:BusinessBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:CaliforniaDomain


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value941304553
Percentage of ProfitLoss28.737.139.8-81.5
Percentage of InterestAndDividendIncomeOperating19.628.38.88.7
Percentage of InterestAndDividendIncomeOperating cma:CaliforniaDomain0.00.00.00.0

cma:Finance


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-93.0-80.0-82.0-83.0-65.0-22.0-26.0-17.0-6.0-7.04.0-14.03312-3.0-6.0-21.0-35.0-53.0-61.0-62.0-68.0-102.0-93.0-90.0-89.0-100.0-73.0-91.0-92.0-92.0-87.0-99.0-98.0-105.0-103.0-96.0-92.0-95.0-91.0-88.0-76.0-59.0-59.0-57.0-59.0
Percentage of ProfitLoss-28.4-22.9-38.1-39.3-57.533.8-9.7-5.8-2.0-2.11.3-4.410.14.3-2.7-2.7-10.3-17.3-32.3-40.9-59.6-113.3-87.9-68.4-66.7-66.4-67.1-47.4-60.3-66.2-78.6-59.2-69.2-73.1-80.8-88.0-66.7-70.8-99.0-92.9-91.7-73.8-61.5-100.0-81.4-113.5
Percentage of InterestAndDividendIncomeOperating-19.4-17.4-16.8-17.1-12.7-3.6-3.9-2.4-0.8-1.00.6-2.15.12.0-0.5-1.0-4.0-7.1-11.0-12.7-13.1-14.4-22.3-20.8-20.3-20.5-22.8-16.7-20.6-21.1-20.2-19.8-22.3-22.0-23.0-22.4-20.4-19.2-19.8-19.7-20.4-17.5-13.3-12.9-12.0-12.4
Percentage of InterestAndDividendIncomeOperating cma:Finance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:FinanceOther


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-89.0-81.0-80.0-83.0-64.0-24.0-32.0-15.0-3.04.0-15.08.03632-109.0-3.0-16.0-9.0-52.0-62.0-61.0-69.0-104.0-92.0-91.0-88.0-100.0-76.0-87.0-94.0-91.0-84.0-99.0-99.0-106.0-122.0-106.0-101.0-119.0-111.0-89.0-76.0
Percentage of ProfitLoss-27.1-23.1-37.2-39.3-56.636.9-11.9-5.1-1.01.2-4.82.511.011.4-97.3-1.3-7.9-4.5-31.7-41.6-58.7-115.0-89.7-67.6-67.4-65.7-67.1-49.4-57.6-67.6-77.8-57.1-69.2-73.9-81.5-104.3-73.6-77.7-124.0-113.3-92.7-73.8
Percentage of InterestAndDividendIncomeOperating-18.6-17.6-16.4-17.1-12.5-3.9-4.9-2.1-0.40.6-2.11.25.55.4-18.9-0.5-3.0-1.8-10.7-12.9-12.9-14.6-22.8-20.5-20.5-20.2-22.8-17.4-19.7-21.6-20.0-19.1-22.3-22.2-23.2-26.5-22.6-21.1-24.7-24.0-20.6-17.5
Percentage of InterestAndDividendIncomeOperating cma:FinanceOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:MichiganDomain


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value111913858
Percentage of ProfitLoss33.826.033.6-89.2
Percentage of InterestAndDividendIncomeOperating23.219.87.49.5
Percentage of InterestAndDividendIncomeOperating cma:MichiganDomain0.00.00.00.0

cma:Other1


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value4.0-1.02.00.01.0-2.0-6.02.03.011-19.0223.020-106.03.05.0261.0-1.01.0-1.0-2.01.0-1.01.00.0-3.04.0-2.01.03.00.0-1.0-1.0-19.0-8.0-11.0-26.0
Percentage of ProfitLoss1.2-0.30.90.00.93.1-2.20.71.03.2-6.16.90.97.1-94.61.32.512.90.6-0.71.0-1.7-1.70.7-0.70.70.0-1.92.6-1.40.92.00.0-0.7-0.8-16.2-5.6-8.5-27.1
Percentage of InterestAndDividendIncomeOperating0.8-0.20.40.00.2-0.3-0.90.30.41.5-2.73.30.53.4-18.30.50.95.20.2-0.20.2-0.2-0.40.2-0.20.20.0-0.70.9-0.50.20.70.0-0.2-0.2-4.1-1.7-2.3-5.4
Percentage of InterestAndDividendIncomeOperating cma:Other10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:OtherMarkets


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value106939189763073876476766466685148494656525559515943444759595647505556794147383224303849323.016
Percentage of ProfitLoss32.326.642.342.267.3-46.227.129.821.522.424.520.120.224.245.521.224.122.834.134.952.998.344.043.431.932.831.538.339.140.340.234.038.541.860.835.032.629.233.324.531.236.951.054.24.330.8
Percentage of InterestAndDividendIncomeOperating22.120.318.618.414.94.911.112.28.810.710.89.510.211.58.88.39.39.311.610.811.612.511.213.29.710.110.713.513.412.910.311.412.412.617.38.910.07.96.75.27.08.811.07.00.63.4
Percentage of InterestAndDividendIncomeOperating cma:OtherMarkets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:RetailBank


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8.06.0-2.04.0-12.01.0112124282317322021211611-3.01.0-2.012-2.0131817127.0169.0156.01110.08.09.019149.019-3.0-2.0-14.0-7.0-3.0-7.0
Percentage of ProfitLoss2.41.7-0.91.9-10.6-1.54.17.28.18.37.45.39.87.118.89.37.95.4-1.80.7-1.920.0-1.79.613.312.78.14.510.66.512.84.17.77.56.27.713.210.89.419.4-3.1-1.9-14.6-11.9-4.3-13.5
Percentage of InterestAndDividendIncomeOperating1.71.3-0.40.8-2.30.21.73.03.33.93.32.54.93.43.63.63.02.2-0.60.2-0.42.5-0.42.94.13.92.71.63.62.13.31.42.52.21.82.04.02.91.94.1-0.7-0.5-3.1-1.5-0.6-1.5
Percentage of InterestAndDividendIncomeOperating cma:RetailBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:TexasDomain


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value10611720-178.0
Percentage of ProfitLoss32.333.417.7273.8
Percentage of InterestAndDividendIncomeOperating22.125.53.9-29.2
Percentage of InterestAndDividendIncomeOperating cma:TexasDomain0.00.00.00.0

cma:WealthManagement


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value323510.029142129383933332924312418232323181322222126162312252623152425161920115.0111214
Percentage of ProfitLoss9.810.04.713.712.4-32.310.813.013.19.710.69.17.411.021.48.011.311.414.012.112.536.719.015.419.311.915.47.816.618.719.710.216.818.712.316.213.98.55.211.212.513.6
Percentage of InterestAndDividendIncomeOperating6.77.62.06.02.73.44.45.35.44.64.74.33.75.34.23.14.34.64.83.82.74.74.84.75.93.75.32.85.76.05.03.45.45.63.54.14.32.31.02.42.83.2
Percentage of InterestAndDividendIncomeOperating cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:CA


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value784552122111114110821019785576161597275507490627173836363637672645676686564
Percentage of ProfitLoss37.039.8-80.045.438.038.332.426.531.829.830.250.927.030.029.243.950.348.1123.377.645.652.654.555.740.941.745.365.049.044.841.858.558.145.149.2
Percentage of InterestAndDividendIncomeOperating16.18.88.518.515.615.715.511.615.014.914.49.910.511.511.914.915.610.615.719.713.816.016.818.914.414.314.516.716.414.412.616.714.813.813.4
Percentage of InterestAndDividendIncomeOperating stpr:CA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:MI


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value633656839410487101887349646567686951577282719873816677683274787757718278
Percentage of ProfitLoss29.931.9-86.230.932.234.925.732.627.722.417.457.128.833.033.742.134.254.8120.070.752.272.654.554.442.951.048.927.450.354.557.543.860.756.960.0
Percentage of InterestAndDividendIncomeOperating13.07.09.212.613.214.312.314.313.011.28.311.111.212.713.714.310.612.115.317.915.822.116.818.515.117.515.67.016.917.617.312.515.417.416.3
Percentage of InterestAndDividendIncomeOperating stpr:MI0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:TX


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value6420-179.023151962665754474955423819333.0-76.0-3.036143238423946533545444555494155
Percentage of ProfitLoss30.317.7275.48.65.16.418.321.317.916.616.743.824.320.718.811.622.12.9-126.7-2.626.510.423.925.527.325.833.145.323.831.532.834.647.034.031.557.3
Percentage of InterestAndDividendIncomeOperating13.23.9-29.43.52.12.68.79.48.48.38.08.59.57.97.73.96.90.6-16.1-0.78.03.27.48.79.68.810.611.68.010.29.99.912.010.48.611.4
Percentage of InterestAndDividendIncomeOperating stpr:TX0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value328350215211113-65.02692922983393103183262811122262032021641491046011613613513414915415113911714714313413011714413096989610396597052
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating68.576.344.043.622.1-10.740.841.141.047.744.047.150.247.619.439.038.440.733.931.022.012.725.430.430.430.834.035.334.232.025.733.532.330.028.525.430.627.220.021.222.323.721.612.914.710.9
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value212194192193188185186190189184192190187188212209
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating44.342.339.339.936.830.428.226.726.025.927.328.128.831.940.142.1

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

cma:BrokerageCommissionsRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.04.04.05.05.07.07.07.07.07.07.07.06.07.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.92.12.12.62.73.83.83.73.73.83.63.73.23.7
Percentage of InterestAndDividendIncomeOperating0.80.90.81.01.01.11.11.01.01.01.01.00.91.2
Percentage of InterestAndDividendIncomeOperating cma:BrokerageCommissionsRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:NoninterestDomain


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value11141214171210.07.010.010.0151310.013
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.27.26.27.39.06.55.43.75.35.47.86.85.36.9
Percentage of InterestAndDividendIncomeOperating2.33.12.52.93.32.01.51.01.41.42.11.91.52.2
Percentage of InterestAndDividendIncomeOperating cma:NoninterestDomain0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommercialLoan


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.04.05.05.04.04.05.05.04.04.04.05.05.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.12.62.62.12.22.72.62.12.22.12.62.72.1
Percentage of InterestAndDividendIncomeOperating1.30.91.01.00.80.70.80.70.60.60.60.70.80.7
Percentage of InterestAndDividendIncomeOperating us-gaap:CommercialLoan0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CreditAndDebitCard


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8471727168596267656364616059
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.636.637.536.836.231.933.335.334.434.233.332.132.131.4
Percentage of InterestAndDividendIncomeOperating17.515.514.714.713.39.79.49.48.98.99.19.09.210.0
Percentage of InterestAndDividendIncomeOperating us-gaap:CreditAndDebitCard0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DepositAccount


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4748474742495051515151535354
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.224.724.524.422.326.526.926.827.027.726.627.928.328.7
Percentage of InterestAndDividendIncomeOperating9.810.59.69.78.28.07.67.27.07.27.27.98.29.2
Percentage of InterestAndDividendIncomeOperating us-gaap:DepositAccount0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FiduciaryAndTrust


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6053525152545253524951515252
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.327.327.126.427.729.228.027.927.526.626.626.827.827.7
Percentage of InterestAndDividendIncomeOperating12.511.510.610.510.28.97.97.57.26.97.27.68.08.8
Percentage of InterestAndDividendIncomeOperating us-gaap:FiduciaryAndTrust0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

cma:BrokerageCommissionsRevenue, cma:WealthManagement


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.04.04.05.05.07.07.07.07.07.07.07.06.07.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.92.12.12.62.73.83.83.73.73.83.63.73.23.7
Percentage of InterestAndDividendIncomeOperating0.80.90.81.01.01.11.11.01.01.01.01.00.91.2
Percentage of InterestAndDividendIncomeOperating cma:BrokerageCommissionsRevenue cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:NoninterestDomain, cma:BusinessBank


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.05.05.08.0114.03.01.02.02.03.03.02.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.92.62.64.15.92.21.60.51.11.11.61.61.12.1
Percentage of InterestAndDividendIncomeOperating0.81.11.01.72.20.70.50.10.30.30.40.40.30.7
Percentage of InterestAndDividendIncomeOperating cma:NoninterestDomain cma:BusinessBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:NoninterestDomain, cma:RetailBank


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.04.03.02.02.03.03.01.04.03.06.06.03.05.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.42.11.61.01.11.61.60.52.11.63.13.21.62.7
Percentage of InterestAndDividendIncomeOperating0.60.90.60.40.40.50.50.10.60.40.90.90.50.8
Percentage of InterestAndDividendIncomeOperating cma:NoninterestDomain cma:RetailBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:NoninterestDomain, cma:WealthManagement


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.05.04.04.04.05.04.05.04.05.05.04.05.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.92.62.12.12.12.72.22.62.12.72.62.12.72.1
Percentage of InterestAndDividendIncomeOperating0.81.10.80.80.80.80.60.70.60.70.70.60.80.7
Percentage of InterestAndDividendIncomeOperating cma:NoninterestDomain cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommercialLoan, cma:BusinessBank


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.04.05.05.04.04.05.05.04.04.04.05.05.04.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.12.62.62.12.22.72.62.12.22.12.62.72.1
Percentage of InterestAndDividendIncomeOperating1.30.91.01.00.80.70.80.70.60.60.60.70.80.7
Percentage of InterestAndDividendIncomeOperating us-gaap:CommercialLoan cma:BusinessBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CreditAndDebitCard, cma:BusinessBank


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7260616059495155545352505049
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.030.931.831.131.426.527.428.928.628.827.126.326.726.1
Percentage of InterestAndDividendIncomeOperating15.013.112.512.411.58.07.77.77.47.57.47.47.78.3
Percentage of InterestAndDividendIncomeOperating us-gaap:CreditAndDebitCard cma:BusinessBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CreditAndDebitCard, cma:RetailBank


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1110.010.0118.09.010.01110.09.01110.09.09.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.25.25.25.74.34.95.45.85.34.95.75.34.84.8
Percentage of InterestAndDividendIncomeOperating2.32.22.02.31.61.51.51.51.41.31.61.51.41.5
Percentage of InterestAndDividendIncomeOperating us-gaap:CreditAndDebitCard cma:RetailBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CreditAndDebitCard, cma:WealthManagement


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.01.01.00.01.01.01.01.01.01.01.01.01.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.50.50.00.50.50.50.50.50.50.50.50.50.5
Percentage of InterestAndDividendIncomeOperating0.20.20.20.00.20.20.20.10.10.10.10.10.20.2
Percentage of InterestAndDividendIncomeOperating us-gaap:CreditAndDebitCard cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DepositAccount, cma:BusinessBank


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3334333330323232333332343335
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.617.517.217.116.017.317.216.817.517.916.717.917.618.6
Percentage of InterestAndDividendIncomeOperating6.97.46.76.85.95.34.94.54.54.64.55.05.15.9
Percentage of InterestAndDividendIncomeOperating us-gaap:DepositAccount cma:BusinessBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DepositAccount, cma:RetailBank


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1313131211161618171718181818
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.16.76.86.25.98.68.69.59.09.29.49.59.69.6
Percentage of InterestAndDividendIncomeOperating2.72.82.72.52.22.62.42.52.32.42.62.72.83.1
Percentage of InterestAndDividendIncomeOperating us-gaap:DepositAccount cma:RetailBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DepositAccount, cma:WealthManagement


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.01.01.02.01.01.02.01.01.01.01.01.02.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.50.51.00.50.51.10.50.50.50.50.51.10.5
Percentage of InterestAndDividendIncomeOperating0.20.20.20.40.20.20.30.10.10.10.10.10.30.2
Percentage of InterestAndDividendIncomeOperating us-gaap:DepositAccount cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FiduciaryAndTrust, cma:WealthManagement


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6053525152545253524951515252
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.327.327.126.427.729.228.027.927.526.626.626.827.827.7
Percentage of InterestAndDividendIncomeOperating12.511.510.610.510.28.97.97.57.26.97.27.68.08.8
Percentage of InterestAndDividendIncomeOperating us-gaap:FiduciaryAndTrust cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

cma:BusinessBank


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value115103104106104899193939291928384103103
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax54.253.154.254.955.348.148.948.949.250.047.448.444.444.748.649.3
Percentage of InterestAndDividendIncomeOperating24.022.421.321.920.414.613.813.112.813.012.913.612.814.219.520.8
Percentage of InterestAndDividendIncomeOperating cma:BusinessBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:RetailBank


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value27272625212829303129353438394645
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.713.913.513.011.215.115.615.816.415.818.217.920.320.721.721.5
Percentage of InterestAndDividendIncomeOperating5.65.95.35.24.14.64.44.24.34.15.05.05.86.68.79.1
Percentage of InterestAndDividendIncomeOperating cma:RetailBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:WealthManagement


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value70646262636866676563656466656361
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax33.033.032.332.133.536.835.535.334.434.233.933.735.334.629.729.2
Percentage of InterestAndDividendIncomeOperating14.613.912.712.812.311.210.09.48.98.99.29.510.211.011.912.3
Percentage of InterestAndDividendIncomeOperating cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value8835586291881298363184397763377340272848725377069070818714487198772335715677201771447729767297874124712806900771877710126994569336691906888765325656816522764670629476488565359633146265062593610086088854141550175366755004558855710659249
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value10141931892118747
Percentage of Assets11.512.713.012.2
Percentage of Assets11.512.713.012.2
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value8042478139800797575776595689356607565648652146328163311636626390864335636046398363462650466518266397635866136364317633906242261836617886145457956583985807457701560365789758417562305562255608541405393748103491404787449147500935143852220
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 Assets91.090.690.990.690.890.390.090.189.989.589.489.188.888.988.988.888.889.189.389.689.288.989.589.389.289.289.389.288.788.989.089.289.089.289.488.888.888.888.788.688.889.389.289.489.690.188.1

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value209119911704784
Percentage of Liabilities2.63.02.71.2
Percentage of Assets2.42.72.41.1
Percentage of Assets srt:ParentCompany20.621.418.59.0

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
Value8835586291881298363184397763377340272848725377069070818714487198772335715677201771447729767297874124712806900771877710126994569336691906888765325656816522764670629476488565359633146265062593610086088854141550175366755004558855710659249
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value10141931892118747
Percentage of LiabilitiesAndStockholdersEquity11.512.713.012.2
Percentage of Assets11.512.713.012.2
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Tier One Risk Based Capital

us-gaap:TierOneRiskBasedCapital

us-gaap:TierOneRiskBasedCapital


Tier
Period End2020-12-312019-12-31
Value40004099
Percentage of TierOneRiskBasedCapital100.0100.0
Percentage of Assets4.55.6

us-gaap:TierOneRiskBasedCapital dei:LegalEntity

cma:ComericaBank


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value72787199722971217120708170516803670065966073
Percentage of TierOneRiskBasedCapital181.9175.60.00.00.00.00.00.00.00.00.0
Percentage of Assets8.39.810.210.09.89.910.210.410.310.811.3
Percentage of Assets cma:ComericaBank0.00.00.00.00.00.00.00.00.00.00.0

cma:ComericaIncorporated


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value731369197470777375407350716968956705658260277704
Percentage of TierOneRiskBasedCapital182.8168.80.00.00.00.00.00.00.00.00.00.0
Percentage of Assets8.39.410.510.910.310.210.410.610.310.811.213.0
Percentage of Assets cma:ComericaIncorporated0.00.00.00.00.00.00.00.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


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
Value165011487115767111411331148555818411735813481456158395660683658456204563183197218804041103002614772005965596260717787389456206451708839255597453439384141396035565198346644452083399442254588561734231514
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.717.217.913.315.86.47.95.74.94.96.48.27.99.58.28.67.911.49.910.85.84.48.610.18.58.68.811.36.08.69.911.06.28.66.96.26.66.35.88.56.48.13.97.37.68.09.50.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1489119615241059761573
Percentage of CashAndCashEquivalentsAtCarryingValue9.420.633.418.110.59.3
Percentage of Assets1.71.62.21.51.00.8
Percentage of Assets srt:ParentCompany14.712.816.512.10.00.0

Land

us-gaap:Land

us-gaap:Land


Land
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value868685858687889090949293
Percentage of Land100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.20.20.2

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value141814171419138214161439140414351415145113731355
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.92.01.91.92.02.02.22.22.42.62.3

Furniture And Fixtures Gross

us-gaap:FurnitureAndFixturesGross

us-gaap:FurnitureAndFixturesGross


Furniture
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value485513492484499490508515509527503508
Percentage of FurnitureAndFixturesGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.70.70.70.70.70.70.80.80.90.90.9

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value959960944916915889872841793776743711
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.11.31.31.31.31.21.31.31.21.31.41.2

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
Value454456459456450454457467470474475472467468466467484488501528544541550541541531532524562583594604604618622625667670675685641637630639634637644
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 Assets0.50.50.50.50.50.60.60.60.60.70.70.70.60.60.70.60.70.70.70.70.80.80.80.80.80.80.80.80.90.90.90.91.01.01.01.01.11.11.11.11.21.21.21.21.11.11.1

us-gaap:PropertyPlantAndEquipmentNet us-gaap:ConsolidatedEntities

srt:ParentCompany


Property
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.01.01.02.0
Percentage of PropertyPlantAndEquipmentNet0.20.20.20.4
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value635635635635635635635635635635635150150150
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.90.90.90.90.90.91.01.01.01.00.30.30.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

cma:BusinessBank


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312011-09-302010-12-312009-12-31
Value4734734733803803803803803803803809090
Percentage of Goodwill74.574.574.559.859.859.859.859.859.859.859.860.060.0
Percentage of Assets0.50.60.70.50.50.50.50.60.60.60.60.20.2
Percentage of Assets cma:BusinessBank0.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:RetailBank


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312011-09-302010-12-312009-12-31
Value1011011011941941941941941941941944747
Percentage of Goodwill15.915.915.930.630.630.630.630.630.630.630.631.331.3
Percentage of Assets0.10.10.10.30.30.30.30.30.30.30.30.10.1
Percentage of Assets cma:RetailBank0.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:WealthManagement


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value616161616161616161611313
Percentage of Goodwill9.69.69.69.69.69.69.69.69.69.68.78.7
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.00.0
Percentage of Assets cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:CoreDeposits


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1.02.04.06.08.010.013162029
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CoreDeposits0.00.00.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-312009-12-31
Value154.03411134292104145166153169165141252224230217187166173199132135126130200212224256329294254395383158
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.10.10.10.20.20.20.20.20.20.30.30.30.30.30.20.30.30.20.20.20.20.30.30.30.40.50.50.40.60.70.3

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value306329320329318
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0
Percentage of Assets0.30.40.40.50.4

Equity Securities Fv Ni

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

us-gaap:EquitySecuritiesFvNi

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period 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
Value635460535040544947434340
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period 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
Value635460535040544947434340
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.00.00.00.00.00.00.00.00.00.00.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value58045388536053935285530748424850486447324111479346964385449544154165414444404433435642034117423239784186443838803935399138913837382238194353448944075414457146703976403439094104404544504247
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 Assets6.66.26.16.46.37.06.66.76.76.75.86.76.56.16.36.15.85.76.16.06.16.15.76.05.76.06.45.66.06.16.05.96.15.96.77.17.08.67.57.77.37.37.37.57.27.87.2

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value329242169127
Percentage of OtherAssets6.15.04.12.8
Percentage of Assets0.40.30.20.2
Percentage of Assets srt:ParentCompany3.22.61.81.5

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
Value285428525728575465217434726973116558684864636418558355944622463751435153516058905921310930583100284126862679266926203534354335653601469947204740474249194944500952066116613872399041991511060
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 Assets3.23.36.56.97.79.79.910.09.09.79.19.07.87.76.56.47.27.17.17.98.34.54.34.44.13.93.93.94.05.45.45.55.77.27.27.57.67.98.18.29.611.111.413.216.217.418.7

us-gaap:LongTermDebt us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value18181841173517641523183214591432602
Percentage of LongTermDebt31.724.823.924.123.226.822.622.313.0
Percentage of Assets2.12.42.42.42.12.62.12.00.8
Percentage of Assets srt:ParentCompany17.90.018.60.00.00.015.80.06.9

srt:Subsidiaries


Long
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value391055935534554750355016500449864020
Percentage of LongTermDebt68.375.276.175.976.873.277.477.787.0
Percentage of Assets4.47.37.57.66.97.17.17.05.6
Percentage of Assets srt:Subsidiaries0.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:ConsolidationItems

srt:ReportableLegalEntities


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value108410873910391846735534
Percentage of LongTermDebt38.038.168.368.171.776.1
Percentage of Assets1.21.34.44.75.57.5
Percentage of Assets srt:ReportableLegalEntities0.00.00.00.00.00.0

us-gaap:OperatingSegments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value177017651818183618481735
Percentage of LongTermDebt62.061.931.731.928.323.9
Percentage of Assets2.02.02.12.22.22.4
Percentage of Assets us-gaap:OperatingSegments0.00.00.00.00.00.0

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

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value291929195790574164657224731673166568686264366431558856044636464251385149513258575863302930323047283526772681269625933540
Percentage of LongTermDebt102.3102.3101.199.899.197.2100.6100.1100.2100.299.6100.2100.1100.2100.3100.199.999.999.599.499.097.499.198.399.899.7100.1101.099.099.9
Percentage of Assets3.33.46.66.97.79.510.010.09.19.79.19.07.87.76.56.47.27.17.07.98.24.44.24.34.13.93.93.94.05.4
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value285428525728575465217434726973116558684864636418558355944622463751435153516058905921310930583100284126862679266926203534354335654720
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.23.36.56.97.79.79.910.09.09.79.19.07.87.76.56.47.27.17.17.98.34.54.34.44.13.93.93.94.05.45.45.57.2
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value291929195790574164657224731673166568686264366431558856044636464251385149513258575863302930323047283526772681269625933527354035484685
Percentage of LongTermDebt102.3102.3101.199.899.197.2100.6100.1100.2100.299.6100.2100.1100.2100.3100.199.999.999.599.499.097.499.198.399.899.7100.1101.099.099.899.999.599.3
Percentage of Assets3.33.46.66.97.79.510.010.09.19.79.19.07.87.76.56.47.27.17.07.98.24.44.24.34.13.93.93.94.05.45.45.57.2
Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value344367358366355
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets0.40.50.50.50.5

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value403
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets0.5

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value7931815280507874780274027327720073237409750777868079800079638034798579307796772776947644756076227523750074027433736972837153696969116988694270847028698568686951603858775793585757925668702971525117
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.09.49.19.49.29.710.09.910.110.510.610.911.211.111.111.211.210.910.710.410.811.110.510.710.810.810.710.811.311.111.010.811.010.810.611.211.211.211.311.411.210.710.810.610.49.911.90.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value8050732775077963
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0
Percentage of Assets9.110.010.611.1
Percentage of Assets srt:ParentCompany79.478.681.591.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-120.0-105.0168116158174-235.0-336.0-382.0-513.0-609.0-611.0-589.0-553.0-451.0-359.0-361.0-379.0-383.0-292.0-295.0-328.0-429.0-345.0-396.0-370.0-412.0-317.0-304.0-325.0-391.0-541.0-538.0-410.0-413.0-253.0-301.0-326.0-356.0-230.0-308.0-382.0-389.0-238.0-240.0-303.0-336.0-309.0-177.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-1.5-1.32.11.52.02.4-3.2-4.7-5.2-6.9-8.1-7.8-7.3-6.9-5.7-4.5-4.5-4.8-4.9-3.8-3.8-4.3-5.7-4.5-5.3-4.9-5.6-4.3-4.1-4.5-5.5-7.8-7.8-5.9-5.9-3.6-4.3-4.7-5.2-3.3-5.1-6.5-6.7-4.1-4.1-5.3-4.8-4.3-3.5
Percentage of Assets-0.1-0.10.20.10.20.2-0.3-0.5-0.5-0.7-0.9-0.9-0.8-0.8-0.6-0.5-0.5-0.5-0.5-0.4-0.4-0.5-0.6-0.5-0.6-0.5-0.6-0.5-0.5-0.5-0.6-0.8-0.9-0.6-0.6-0.4-0.5-0.5-0.6-0.4-0.6-0.7-0.7-0.4-0.4-0.5-0.60.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value2163218321852179217321682174217221682159214821442144213421222112211021062135217421652158217321652158218821882183217521822179217121602157216221532144215421702162147214641481147314671468740722564
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest27.326.827.127.727.929.329.730.229.629.128.627.526.526.726.626.326.426.627.428.128.128.228.728.428.729.229.629.429.530.030.531.231.330.931.130.430.530.831.631.124.424.925.625.125.325.910.510.111.0
Percentage of Assets2.42.52.52.62.62.83.03.03.03.13.03.03.03.03.02.93.02.92.92.93.03.13.03.03.13.23.23.23.33.33.33.43.43.33.33.43.43.43.63.62.72.72.82.72.62.61.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141101910191019101910191019894894894
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest14.414.014.214.514.615.415.615.815.615.415.214.714.114.314.314.214.314.414.614.814.814.915.115.015.215.215.415.415.515.716.016.416.516.316.416.116.216.316.616.416.917.317.617.417.618.012.712.517.5
Percentage of Assets1.31.31.31.41.41.51.61.61.61.61.61.61.61.61.61.61.61.61.61.51.61.71.61.61.61.61.61.71.71.71.71.81.81.81.71.81.81.81.91.91.91.91.91.91.81.81.50.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value394394394394395
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest5.04.84.95.05.1
Percentage of Assets0.40.50.40.50.5
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value10202997596239511940493899538936991768979878185878374811078877746758074317331726271577097708470076908684167446631652064146321623961276020593158315744563055465471539553175247517151245064516153455497
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest128.6122.4119.5120.8120.5126.8130.2130.1125.3121.2117.0110.3103.7101.499.096.494.993.794.094.093.092.893.791.991.891.291.189.288.588.188.489.588.786.185.482.381.780.680.878.789.490.590.688.388.589.373.474.7107.4
Percentage of Assets11.511.610.911.411.112.313.012.912.712.712.412.011.611.211.010.810.610.210.09.810.010.39.99.99.99.99.79.610.09.89.79.69.79.39.19.29.29.09.19.010.09.79.89.49.28.98.70.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-5849.0-5436.0-5461.0-5467.0-5469.0-5470.0-5291.0-5146.0-4780.0-4357.0-3954.0-3475.0-2991.0-2832.0-2736.0-2606.0-2485.0-2369.0-2428.0-2558.0-2474.0-2424.0-2409.0-2346.0-2288.0-2300.0-2259.0-2205.0-2163.0-2129.0-2097.0-2041.0-1979.0-1920.0-1879.0-1788.0-1700.0-1614.0-1633.0-1593.0-1540.0-1541.0-1565.0-1568.0-1578.0-1580.0-1581.0-1629.0-1661.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-73.7-66.7-67.8-69.4-70.1-73.9-72.2-71.5-65.3-58.8-52.7-44.6-37.0-35.4-34.4-32.4-31.1-29.9-31.1-33.1-32.2-31.7-31.9-30.8-30.4-30.7-30.5-29.7-29.4-29.2-29.3-29.3-28.6-27.5-27.1-25.2-24.2-23.1-23.8-22.9-25.5-26.2-27.0-26.8-27.2-27.9-22.5-22.8-32.5
Percentage of Assets-6.6-6.3-6.2-6.5-6.5-7.2-7.2-7.1-6.6-6.2-5.6-4.9-4.2-3.9-3.8-3.6-3.5-3.2-3.3-3.5-3.5-3.5-3.4-3.3-3.3-3.3-3.3-3.2-3.3-3.2-3.2-3.2-3.1-3.0-2.9-2.8-2.7-2.6-2.7-2.6-2.8-2.8-2.9-2.9-2.8-2.8-2.70.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value1141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141114111411141101910191019101910191019894
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.31.31.41.41.51.61.61.61.61.61.61.61.61.61.61.61.61.61.51.61.71.61.61.61.61.61.71.71.71.71.81.81.81.71.81.81.81.91.91.91.91.91.91.81.81.5

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value2163218321852179217321682174217221682159214821442144213421222112211021062135217421652158217321652158218821882183217521822179217121602157216221532144215421702162147214641481147314671468740
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.42.52.52.62.62.83.03.03.03.13.03.03.03.03.02.93.02.92.92.93.03.13.03.03.13.23.23.23.33.33.33.43.43.33.33.43.43.43.63.62.72.72.82.72.62.61.2

us-gaap:AdditionalPaidInCapitalCommonStock us-gaap:ConsolidatedEntities

srt:ParentCompany


Additional
Period End2020-12-312019-12-312018-12-312017-12-31
Value2185217421482122
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0
Percentage of Assets2.53.03.03.0
Percentage of Assets srt:ParentCompany21.523.323.324.3

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
Value102029975962395119404938995389369917689798781858783748110788777467580743173317262715770977084700769086841674466316520641463216239612760205931583157445630554654715395531752475171512450645161
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 Assets11.511.610.911.411.112.313.012.912.712.712.412.011.611.211.010.810.610.210.09.810.010.39.99.99.99.99.79.610.09.89.79.69.79.39.19.29.29.09.19.010.09.79.89.49.28.98.7

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:AdjustmentsForChangeInAccountingPrinciple

srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment


Retained
Period End2021-06-302021-03-312020-12-31
Value7.03.0104
Percentage of RetainedEarningsAccumulatedDeficit0.10.01.1
Percentage of Assets0.00.00.1
Percentage of Assets srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment0.00.00.0

srt:ScenarioPreviouslyReported


Retained
Period End2020-12-31
Value9623
Percentage of RetainedEarningsAccumulatedDeficit100.0
Percentage of Assets10.9
Percentage of Assets srt:ScenarioPreviouslyReported0.0

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities

srt:ParentCompany


Retained
Period End2020-12-312019-12-312018-12-312017-12-31
Value9623953887817887
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0
Percentage of Assets10.913.012.411.0
Percentage of Assets srt:ParentCompany94.9102.495.390.2

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
Value-120.0-105.0168116158174-235.0-336.0-382.0-513.0-609.0-611.0-589.0-553.0-451.0-359.0-361.0-379.0-383.0-292.0-295.0-328.0-429.0-345.0-396.0-370.0-412.0-317.0-304.0-325.0-391.0-541.0-538.0-410.0-413.0-253.0-301.0-326.0-356.0-230.0-308.0-382.0-389.0-238.0-240.0-303.0-336.0-309.0
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 Assets-0.1-0.10.20.10.20.2-0.3-0.5-0.5-0.7-0.9-0.9-0.8-0.8-0.6-0.5-0.5-0.5-0.5-0.4-0.4-0.5-0.6-0.5-0.6-0.5-0.6-0.5-0.5-0.5-0.6-0.8-0.9-0.6-0.6-0.4-0.5-0.5-0.6-0.4-0.6-0.7-0.7-0.4-0.4-0.5-0.60.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:AdjustmentsForChangeInAccountingPrinciple

srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment


Accumulated
Period End2021-06-302021-03-312020-12-31
Value-7.0-3.0-104.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax5.82.9-61.9
Percentage of Assets-0.0-0.0-0.1
Percentage of Assets srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment0.00.00.0

srt:ScenarioPreviouslyReported


Accumulated
Period End2020-12-31
Value168
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0
Percentage of Assets0.2
Percentage of Assets srt:ScenarioPreviouslyReported0.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities

srt:ParentCompany


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value168-235.0-609.0-451.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0
Percentage of Assets0.2-0.3-0.9-0.6
Percentage of Assets srt:ParentCompany1.7-2.5-6.6-5.2

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value58495436546154675469547052915146478043573954347529912832273626062485236924282558247424242409234622882300225922052163212920972041197919201879178817001614163315931540154115651568157815801581
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.66.36.26.56.57.27.27.16.66.25.64.94.23.93.83.63.53.23.33.53.53.53.43.33.33.33.33.23.33.23.23.23.13.02.92.82.72.62.72.62.82.82.92.92.82.82.7

us-gaap:TreasuryStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Treasury
Period End2020-12-312019-12-312018-12-312017-12-31
Value5461529139542736
Percentage of TreasuryStockValue100.0100.0100.0100.0
Percentage of Assets6.27.25.63.8
Percentage of Assets srt:ParentCompany53.956.842.931.3

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.0226.06.04.08.02.05.08.0247.07.010.02410.05.06.0184.05.05.0209.05.08.0167.09.08.0148.09.08.010.08.08.08.0138.08.08.0138.0137.04.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.0226.06.04.08.02.05.08.0247.07.010.02410.05.06.0184.05.05.0209.05.08.0167.09.08.0148.09.08.010.08.08.08.0138.08.08.0138.0137.04.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-156.0159208-24.0456992214443854064935325635824520224940796158-6.024519926956338742191322143861659.02769.0313274158146294312150291255431309
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-32.634.642.5-5.08.8114.833.562.453.05.692.252.339.460.742.434.947.182.119.832.9-1.351.943.560.012.677.716.950.229.949.284.637.62.061.92.068.058.333.130.463.572.434.665.455.990.564.9

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
Value68110089232-1286.0190-3534.01096231-1582.0-239.0-1183.0743-569.0-147.056205-1172.0773371073-1122.0-258.0-2232.0401-923.0-501.0-1416.0190-1389.0-1128.0-1190.0139133940-1715.0-818.0-902.0-303.0-1993.0197-245.01086-971.06163791182
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 InterestAndDividendIncomeOperating142.2219.61887.9-265.737.2-580.3166.332.5-217.6-33.7-168.0110.1-87.5-24.99.735.4-221.6155.87.6223.5-237.2-54.7-488.489.5-207.9-115.2-323.343.6-315.0-259.3-261.0316.97.4210.8-376.1-177.8-191.9-63.4-414.342.5-56.8250.2-218.2135.179.6248.3

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
Value1105-2063.04390-860.082211872384-139.01297-881.0-744.0-917.0-863.0780-660.0166-1765.0-79.0-955.026992236-3132.098056587054-374.03484-469.0831671607-1714.0-153.023023028095492051241-1046.01126-1231.0-1102.0-1173.0-2520.0
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 InterestAndDividendIncomeOperating230.7-449.5897.8-177.71608.8307.458.3-19.5178.4-124.1-105.7-135.9-132.8132.2-114.228.7-333.6-15.9-197.3562.3472.7-663.6214.4126.1195.912.4-85.4799.1-106.319.136.6366.1-386.9-34.3504.865.7172.1114.942.6268.0-242.7259.4-276.6-241.7-246.4-529.4

Cash And Cash Equivalents Period Increase Decrease

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease


Cash
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1630-896.08456-963.01701536100-1080.0-1278.0179-1176.0991-359.0573-2688.01101-822.039301108-3145.0-1053.012353.0-109.0-1716.03893-1726.0-831.0-637.03163-1672.01063596-203.0181404-1642.01732-979.02362-1911.0-231.0-363.0-1029.0
Percentage of CashAndCashEquivalentsPeriodIncreaseDecrease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating340.3-195.21654.8-158.1258.175.413.8-152.1-181.526.5-180.9168.0-62.199.0-508.1222.0-169.8818.8234.2-666.3-230.4275.70.7-25.1-391.8892.9-391.4-191.0-139.7720.5-377.4238.3130.7-44.138.584.5-341.4374.1-227.1544.2-429.4-50.7-76.3-216.2

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-2170.08456-963.0536100-1080.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-448.31654.8-158.175.413.8-152.1

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
Value303915-9.0-22.0-73.08.08.00.0-4.0-13.0237.07.0127-29.0-18.0-1.023-22.0-13.0-39.0-19.0-27.0-4.0-21.012320-8.0-5.0-14.0-32.0-3.029895.04222272910.013-198.0-5.0127-126.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit us-gaap:AdjustmentsForChangeInAccountingPrinciple

srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment


Deferred
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.02.01.02.0
Percentage of DeferredIncomeTaxExpenseBenefit3.35.1-4.5-2.7

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


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
Value41010453266191-399.0118-25.0-64.0289-282.011340-55.04875-43.0-137.010357211-16.042-80.0123-190.0282-10.063-92.0-190.058245-110.0392-66.011-77.061-92.0-66.0-16.0-271.013-27.0-201.0
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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-156.0159208-24.0456992214443854064935325635824520224940796158-6.024519926956338742191322143861659.02769.0313274158146294312150291255431309
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-32.634.642.5-5.08.8114.833.562.453.05.692.252.339.460.742.434.947.182.119.832.9-1.351.943.560.012.677.716.950.229.949.284.637.62.061.92.068.058.333.130.463.572.434.665.455.990.564.9

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value328350215211113-65.02692922983393103183262811122262032021641491046011613613513414915415113911714714313413011714413096989610396597052-29.019189.0
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating68.576.344.043.622.1-10.740.841.141.047.744.047.150.247.619.439.038.440.733.931.022.012.725.430.430.430.834.035.334.232.025.733.532.330.028.525.430.627.220.021.222.323.721.612.914.710.9-6.13.73.31.6

us-gaap:ProfitLoss us-gaap:AdjustmentsForChangeInAccountingPrinciple

srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value4.03.05.06.0
Percentage of ProfitLoss1.20.94.4-9.2
Percentage of InterestAndDividendIncomeOperating0.80.71.01.0
Percentage of InterestAndDividendIncomeOperating srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment0.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementBusinessSegments

cma:BusinessBank


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value377390287261175-63.02612482382742692642341981761901801771961921549520019418218921421119719817021020719821221121120620117917616717413213489
Percentage of ProfitLoss114.9111.4133.5123.7154.996.997.084.979.980.886.883.071.870.5157.184.188.787.6119.5128.9148.1158.3172.4142.6134.8141.0143.6137.0130.5142.4145.3142.9144.8147.8163.1180.3146.5158.5209.4182.7183.3162.1181.2223.7191.4171.2
Percentage of InterestAndDividendIncomeOperating78.785.058.753.934.2-10.339.634.932.738.638.239.136.033.630.432.834.035.740.540.032.620.143.843.341.043.448.948.444.745.537.347.846.744.446.545.944.943.141.838.740.838.539.128.928.218.7
Percentage of InterestAndDividendIncomeOperating cma:BusinessBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:CaliforniaDomain


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value941304553
Percentage of ProfitLoss28.737.139.8-81.5
Percentage of InterestAndDividendIncomeOperating19.628.38.88.7
Percentage of InterestAndDividendIncomeOperating cma:CaliforniaDomain0.00.00.00.0

cma:Finance


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-93.0-80.0-82.0-83.0-65.0-22.0-26.0-17.0-6.0-7.04.0-14.03312-3.0-6.0-21.0-35.0-53.0-61.0-62.0-68.0-102.0-93.0-90.0-89.0-100.0-73.0-91.0-92.0-92.0-87.0-99.0-98.0-105.0-103.0-96.0-92.0-95.0-91.0-88.0-76.0-59.0-59.0-57.0-59.0
Percentage of ProfitLoss-28.4-22.9-38.1-39.3-57.533.8-9.7-5.8-2.0-2.11.3-4.410.14.3-2.7-2.7-10.3-17.3-32.3-40.9-59.6-113.3-87.9-68.4-66.7-66.4-67.1-47.4-60.3-66.2-78.6-59.2-69.2-73.1-80.8-88.0-66.7-70.8-99.0-92.9-91.7-73.8-61.5-100.0-81.4-113.5
Percentage of InterestAndDividendIncomeOperating-19.4-17.4-16.8-17.1-12.7-3.6-3.9-2.4-0.8-1.00.6-2.15.12.0-0.5-1.0-4.0-7.1-11.0-12.7-13.1-14.4-22.3-20.8-20.3-20.5-22.8-16.7-20.6-21.1-20.2-19.8-22.3-22.0-23.0-22.4-20.4-19.2-19.8-19.7-20.4-17.5-13.3-12.9-12.0-12.4
Percentage of InterestAndDividendIncomeOperating cma:Finance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:FinanceOther


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-89.0-81.0-80.0-83.0-64.0-24.0-32.0-15.0-3.04.0-15.08.03632-109.0-3.0-16.0-9.0-52.0-62.0-61.0-69.0-104.0-92.0-91.0-88.0-100.0-76.0-87.0-94.0-91.0-84.0-99.0-99.0-106.0-122.0-106.0-101.0-119.0-111.0-89.0-76.0
Percentage of ProfitLoss-27.1-23.1-37.2-39.3-56.636.9-11.9-5.1-1.01.2-4.82.511.011.4-97.3-1.3-7.9-4.5-31.7-41.6-58.7-115.0-89.7-67.6-67.4-65.7-67.1-49.4-57.6-67.6-77.8-57.1-69.2-73.9-81.5-104.3-73.6-77.7-124.0-113.3-92.7-73.8
Percentage of InterestAndDividendIncomeOperating-18.6-17.6-16.4-17.1-12.5-3.9-4.9-2.1-0.40.6-2.11.25.55.4-18.9-0.5-3.0-1.8-10.7-12.9-12.9-14.6-22.8-20.5-20.5-20.2-22.8-17.4-19.7-21.6-20.0-19.1-22.3-22.2-23.2-26.5-22.6-21.1-24.7-24.0-20.6-17.5
Percentage of InterestAndDividendIncomeOperating cma:FinanceOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:MichiganDomain


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value111913858
Percentage of ProfitLoss33.826.033.6-89.2
Percentage of InterestAndDividendIncomeOperating23.219.87.49.5
Percentage of InterestAndDividendIncomeOperating cma:MichiganDomain0.00.00.00.0

cma:Other1


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value4.0-1.02.00.01.0-2.0-6.02.03.011-19.0223.020-106.03.05.0261.0-1.01.0-1.0-2.01.0-1.01.00.0-3.04.0-2.01.03.00.0-1.0-1.0-19.0-8.0-11.0-26.0
Percentage of ProfitLoss1.2-0.30.90.00.93.1-2.20.71.03.2-6.16.90.97.1-94.61.32.512.90.6-0.71.0-1.7-1.70.7-0.70.70.0-1.92.6-1.40.92.00.0-0.7-0.8-16.2-5.6-8.5-27.1
Percentage of InterestAndDividendIncomeOperating0.8-0.20.40.00.2-0.3-0.90.30.41.5-2.73.30.53.4-18.30.50.95.20.2-0.20.2-0.2-0.40.2-0.20.20.0-0.70.9-0.50.20.70.0-0.2-0.2-4.1-1.7-2.3-5.4
Percentage of InterestAndDividendIncomeOperating cma:Other10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:OtherMarkets


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value106939189763073876476766466685148494656525559515943444759595647505556794147383224303849323.016
Percentage of ProfitLoss32.326.642.342.267.3-46.227.129.821.522.424.520.120.224.245.521.224.122.834.134.952.998.344.043.431.932.831.538.339.140.340.234.038.541.860.835.032.629.233.324.531.236.951.054.24.330.8
Percentage of InterestAndDividendIncomeOperating22.120.318.618.414.94.911.112.28.810.710.89.510.211.58.88.39.39.311.610.811.612.511.213.29.710.110.713.513.412.910.311.412.412.617.38.910.07.96.75.27.08.811.07.00.63.4
Percentage of InterestAndDividendIncomeOperating cma:OtherMarkets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:RetailBank


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8.06.0-2.04.0-12.01.0112124282317322021211611-3.01.0-2.012-2.0131817127.0169.0156.01110.08.09.019149.019-3.0-2.0-14.0-7.0-3.0-7.0
Percentage of ProfitLoss2.41.7-0.91.9-10.6-1.54.17.28.18.37.45.39.87.118.89.37.95.4-1.80.7-1.920.0-1.79.613.312.78.14.510.66.512.84.17.77.56.27.713.210.89.419.4-3.1-1.9-14.6-11.9-4.3-13.5
Percentage of InterestAndDividendIncomeOperating1.71.3-0.40.8-2.30.21.73.03.33.93.32.54.93.43.63.63.02.2-0.60.2-0.42.5-0.42.94.13.92.71.63.62.13.31.42.52.21.82.04.02.91.94.1-0.7-0.5-3.1-1.5-0.6-1.5
Percentage of InterestAndDividendIncomeOperating cma:RetailBank0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:TexasDomain


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value10611720-178.0
Percentage of ProfitLoss32.333.417.7273.8
Percentage of InterestAndDividendIncomeOperating22.125.53.9-29.2
Percentage of InterestAndDividendIncomeOperating cma:TexasDomain0.00.00.00.0

cma:WealthManagement


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value323510.029142129383933332924312418232323181322222126162312252623152425161920115.0111214
Percentage of ProfitLoss9.810.04.713.712.4-32.310.813.013.19.710.69.17.411.021.48.011.311.414.012.112.536.719.015.419.311.915.47.816.618.719.710.216.818.712.316.213.98.55.211.212.513.6
Percentage of InterestAndDividendIncomeOperating6.77.62.06.02.73.44.45.35.44.64.74.33.75.34.23.14.34.64.83.82.74.74.84.75.93.75.32.85.76.05.03.45.45.63.54.14.32.31.02.42.83.2
Percentage of InterestAndDividendIncomeOperating cma:WealthManagement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:CA


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value784552122111114110821019785576161597275507490627173836363637672645676686564
Percentage of ProfitLoss37.039.8-80.045.438.038.332.426.531.829.830.250.927.030.029.243.950.348.1123.377.645.652.654.555.740.941.745.365.049.044.841.858.558.145.149.2
Percentage of InterestAndDividendIncomeOperating16.18.88.518.515.615.715.511.615.014.914.49.910.511.511.914.915.610.615.719.713.816.016.818.914.414.314.516.716.414.412.616.714.813.813.4
Percentage of InterestAndDividendIncomeOperating stpr:CA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:MI


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value633656839410487101887349646567686951577282719873816677683274787757718278
Percentage of ProfitLoss29.931.9-86.230.932.234.925.732.627.722.417.457.128.833.033.742.134.254.8120.070.752.272.654.554.442.951.048.927.450.354.557.543.860.756.960.0
Percentage of InterestAndDividendIncomeOperating13.07.09.212.613.214.312.314.313.011.28.311.111.212.713.714.310.612.115.317.915.822.116.818.515.117.515.67.016.917.617.312.515.417.416.3
Percentage of InterestAndDividendIncomeOperating stpr:MI0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

stpr:TX


Profit
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value6420-179.023151962665754474955423819333.0-76.0-3.036143238423946533545444555494155
Percentage of ProfitLoss30.317.7275.48.65.16.418.321.317.916.616.743.824.320.718.811.622.12.9-126.7-2.626.510.423.925.527.325.833.145.323.831.532.834.647.034.031.557.3
Percentage of InterestAndDividendIncomeOperating13.23.9-29.43.52.12.68.79.48.48.38.08.59.57.97.73.96.90.6-16.1-0.78.03.27.48.79.68.810.611.68.010.29.99.912.010.48.611.4
Percentage of InterestAndDividendIncomeOperating stpr:TX0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value328350215211113-65.02692922983393103183262811122262032021641491046011613613513414915415113911714714313413011714413096989610396597052
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating68.576.344.043.622.1-10.740.841.141.047.744.047.150.247.619.439.038.440.733.931.022.012.725.430.430.430.834.035.334.232.025.733.532.330.028.525.430.627.220.021.222.323.721.612.914.710.9
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.0226.06.04.08.02.05.08.0247.07.010.02410.05.06.0184.05.05.0209.05.08.0167.09.08.0148.09.08.010.08.08.08.0138.08.08.0138.0137.04.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value68110089232-1286.0190-3534.01096231-1582.0-239.0-1183.0743-569.0-147.056205-1172.0773371073-1122.0-258.0-2232.0401-923.0-501.0-1416.0190-1389.0-1128.0-1190.0139133940-1715.0-818.0-902.0-303.0-1993.0197-245.01086-971.06163791182
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 InterestAndDividendIncomeOperating142.2219.61887.9-265.737.2-580.3166.332.5-217.6-33.7-168.0110.1-87.5-24.99.735.4-221.6155.87.6223.5-237.2-54.7-488.489.5-207.9-115.2-323.343.6-315.0-259.3-261.0316.97.4210.8-376.1-177.8-191.9-63.4-414.342.5-56.8250.2-218.2135.179.6248.3

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
Value1105-2063.04390-860.082211872384-139.01297-881.0-744.0-917.0-863.0780-660.0166-1765.0-79.0-955.026992236-3132.098056587054-374.03484-469.0831671607-1714.0-153.023023028095492051241-1046.01126-1231.0-1102.0-1173.0-2520.0
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 InterestAndDividendIncomeOperating230.7-449.5897.8-177.71608.8307.458.3-19.5178.4-124.1-105.7-135.9-132.8132.2-114.228.7-333.6-15.9-197.3562.3472.7-663.6214.4126.1195.912.4-85.4799.1-106.319.136.6366.1-386.9-34.3504.865.7172.1114.942.6268.0-242.7259.4-276.6-241.7-246.4-529.4

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9595939196959910010499102575153524741404038373738373636363634313131322928292020201817189.09.08.08.0
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4518.00.00.00.0199152370429443501500169168148147132125999765496560496660596180737272749390893641540.0210.00.02.02.0
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateStatedPercentage

srt:ParentCompany, cma:ThreePointEightZeroPercentSubNotesDue2026


Debt
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3.80.0380.0380.0380.0380.0380.0380.0380.038
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:ParentCompany cma:ThreePointEightZeroPercentSubNotesDue20260.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:ConsolidationItems, us-gaap:DebtInstrument

us-gaap:OperatingSegments, cma:ThreePointEightZeroPercentSubNotesDue2026


Debt
Period End2021-06-302021-03-312020-09-302020-06-30
Value3.83.83.80.038
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations us-gaap:OperatingSegments cma:ThreePointEightZeroPercentSubNotesDue20260.00.00.00.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value2.8792.682.9434.1736.89211141618
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value52.8149.5844.740.0637.2442.9244.2843.5243.58
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2021-06-302011-12-312010-12-312009-12-31
Value10.0-301.0325520
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312010-12-312009-12-31
Value401326299290460426408708678
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value202019181819171615151410.010.010.010.011111515151515222222161414111111131342422717212029279.010.07.05.00.070
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value3000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.03000000.000000000
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.0

Proceeds From Repayments Of Short Term Debt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-10.0-742.0-1511.0219220-1682.0798891-40.02610.038-499.0-32.050016130.0-502.0491-86.053-24.0-36.0-86.02616-93.0279573-52.047-20.01.012-94.0756.0-69.0-49.0-21.0-289.027
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:CardFees

cma:CardFees


Card
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8471727168596267656364616059918512111117151515151513
Percentage of CardFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:CommercialLendingFees

cma:CommercialLendingFees


Commercial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value27182419171725232122232123182221222021262220302222252926232028282221252224252322212129222222
Percentage of CommercialLendingFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetUnrealizedGainLossIncludedInEarnings us-gaap:DerivativeInstrumentRisk

cma:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetUnrealizedGainLossIncludedInEarnings

us-gaap:InterestRateContract


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value5.0-15.0-3.0-2.01.021-6.07.07.05.07.0-4.0-1.0-7.00.01.02.00.0-16.00.07.011-2.09.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetUnrealizedGainLossIncludedInEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.00.0100.0100.0100.0100.0

cma:Fiduciaryincome

cma:Fiduciaryincome


Fiduciaryincome
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value60535251525452535249515152525048
Percentage of Fiduciaryincome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:Hostingfeespreviouslyincludinginoutsideprocessingfeeexpense us-gaap:ProspectiveAdoptionOfNewAccountingPronouncements

cma:Hostingfeespreviouslyincludinginoutsideprocessingfeeexpense

us-gaap:AccountingStandardsUpdate201815


Hostingfeespreviouslyincludinginoutsideprocessingfeeexpenseus-gaap:
Period End2020-09-302020-06-30
Value9.08.0
Percentage of Hostingfeespreviouslyincludinginoutsideprocessingfeeexpense100.0100.0

cma:IncomeLossFromContinuingOperationsBeforeIncomeTaxes

cma:IncomeLossFromContinuingOperationsBeforeIncomeTaxes


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
Value421448278259140-86.035137238542440038141933533033430226822621314685157199199195219227221203152201193184185153194178129126137138126669330
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:IncreaseDecreaseInOtherFinancingAssetsAndLiabilitiesNet

cma:IncreaseDecreaseInOtherFinancingAssetsAndLiabilitiesNet


Increase
Period End2021-06-302021-03-312019-12-31
Value9000000.0-12000000.01000000.0
Percentage of IncreaseDecreaseInOtherFinancingAssetsAndLiabilitiesNet100.0100.0100.0

cma:IncreaseDecreaseInOtherInvestingAssetsAndLiabilitiesNet

cma:IncreaseDecreaseInOtherInvestingAssetsAndLiabilitiesNet


Increase
Period End2021-06-302021-03-312019-12-31
Value-9.021-4.0
Percentage of IncreaseDecreaseInOtherInvestingAssetsAndLiabilitiesNet100.0100.0100.0

cma:InterestAndDividendIncomeSecuritiesAFSAndHTM

cma:InterestAndDividendIncomeSecuritiesAFSAndHTM


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value7069717274747575757271666464646262626261626256545253515253
Percentage of InterestAndDividendIncomeSecuritiesAFSAndHTM100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:Interestexpenseonhedgedmediumandlongtermdebt cma:DerivativePurpose, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

cma:Interestexpenseonhedgedmediumandlongtermdebt

cma:RiskManagementDerivatives, us-gaap:InterestRateSwap, us-gaap:FairValueHedging


Interestexpenseonhedgedmediumandlongtermdebtcma:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value262525262830302826262321151515192322
Percentage of Interestexpenseonhedgedmediumandlongtermdebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:LetterOfCreditFees

cma:LetterOfCreditFees


Letter
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value10.010.010.09.09.09.09.010.010.09.010.09.01110.01111111212121313141313131414151415171616171918171819181820191918
Percentage of LetterOfCreditFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:NetIncreaseInFixedAssets

cma:NetIncreaseInFixedAssets


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1718282214152433131625242120261615122417272741242925327.01516322823192935273027291917
Percentage of NetIncreaseInFixedAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:NonInterestIncomeExcludingNetSecuritiesGains

cma:NonInterestIncomeExcludingNetSecuritiesGains


Non
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value265252246238265256250246250254248243285276278271269272269246270264261257225216220207204213210200203197205201186189198205215186193192204208185210
Percentage of NonInterestIncomeExcludingNetSecuritiesGains100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostBeforeTax

cma:OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value4.04.010.09.08.09.05.02.04.04.09.09.08.08.06.06.06.06.010.010.09.010.01818111229-10.0-24.0-22.0-23.0-22.0-18.0-17.0-17.0-17.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostNetOfTax

cma:OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostNetOfTax


Other
Period End2021-06-302021-03-312020-06-302020-03-312017-12-312016-12-312015-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3.03.04.03.05.06.012-6.0-14.0-15.0-14.0-14.0-12.0-10.0-11.0-11.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostTax

cma:OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1.01.02.02.02.02.01.00.01.01.02.02.02.02.01.03.02.02.04.017-3.0-4.06.07.06.06.04.05.010.0-4.0-10.0-7.0-9.0-8.0-6.0-7.0-6.0-6.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicDefinedBenefitCostTax100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:Othersourcesofnoninterestincome

cma:Othersourcesofnoninterestincome


Othersourcesofnoninterestincome
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value727673595952806661545844615626246462
Percentage of Othersourcesofnoninterestincome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:Othersourcesofnoninterestincome us-gaap:StatementBusinessSegments

cma:BusinessBank


Othersourcesofnoninterestincomeus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value52564529403852474344534543379.07.04941
Percentage of Othersourcesofnoninterestincome72.273.761.649.267.873.165.071.270.581.591.4102.370.566.134.629.276.666.1

cma:FinanceOther1MemberDomain


Othersourcesofnoninterestincomeus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1616232513121716137.04.0-4.014135.04.0
Percentage of Othersourcesofnoninterestincome22.221.131.542.422.023.121.224.221.313.06.9-9.123.023.219.216.7

cma:RetailBank


Othersourcesofnoninterestincomeus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.01.04.03.03.00.08.01.02.02.01.01.04.03.08.08.02.03.0
Percentage of Othersourcesofnoninterestincome4.21.35.55.15.10.010.01.53.33.71.72.36.65.430.833.33.14.8

cma:WealthManagement


Othersourcesofnoninterestincomeus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1.03.01.02.03.02.03.02.03.01.00.02.01.03.04.05.01.03.0
Percentage of Othersourcesofnoninterestincome1.43.91.43.45.13.83.83.04.91.90.04.51.65.415.420.81.64.8

cma:OutsideProcessingFeeExpense

cma:OutsideProcessingFeeExpense


Outside
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value71646558625770666563656564619992888789868479838685783331302830313028282726262725252427232323
Percentage of OutsideProcessingFeeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:Servicechargesondepositaccounts

cma:Servicechargesondepositaccounts


Servicechargesondepositaccounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value47484747424950515151515353545557
Percentage of Servicechargesondepositaccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:SoftwareExpenses

cma:SoftwareExpenses


Software
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value38393939393730302829303232313135312929313029262624232325252224222222232321232322202323222222
Percentage of SoftwareExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:Stockoptionsexcludedbecauseexercisepricesweregreaterthanaveragemarketpriceofshares

cma:Stockoptionsexcludedbecauseexercisepricesweregreaterthanaveragemarketpriceofshares


Stockoptionsexcludedbecauseexercisepricesweregreaterthanaveragemarketpriceofshares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value443000.0782000.01000.02029000.02056100.01200000.0-27000.0814000.0470160.0400000.0
Percentage of Stockoptionsexcludedbecauseexercisepricesweregreaterthanaveragemarketpriceofshares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:Totalothercomponentsofnetbenefitcreditorcost us-gaap:RetirementPlanType

cma:Totalothercomponentsofnetbenefitcreditorcost

us-gaap:OtherPensionPlansDefinedBenefit


Totalothercomponentsofnetbenefitcreditorcostus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1.0-4.0-2.0-2.0
Percentage of Totalothercomponentsofnetbenefitcreditorcost100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Totalothercomponentsofnetbenefitcreditorcostus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3233-116.0171716-124.018-17.0-18.0-15.0-14.0-15.0-14.0-15.0-14.0-14.0-14.0
Percentage of Totalothercomponentsofnetbenefitcreditorcost-3200.0-825.00.00.0-850.0-800.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Totalothercomponentsofnetbenefitcreditorcostus-gaap:
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value3.02.0-2.0-2.02.02.03.02.02.02.02.02.0
Percentage of Totalothercomponentsofnetbenefitcreditorcost0.0-100.0100.00.00.00.00.00.00.00.00.00.0

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments

us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments


Accretion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-8.0-8.0-8.0-6.00.0-1.00.0-1.0-1.00.00.0-1.0-1.0-1.0-1.0-2.0-1.0-2.0-1.0-3.0-2.0-2.0-2.0-3.0-4.0-4.0-4.0-4.0-3.0-2.0-2.0-3.0-8.0-10.0-13.0-12.0-13.0-10.0-12.0-15.0-5.0-7.0-12.0-6.0-4.0-4.0
Percentage of AccretionAmortizationOfDiscountsAndPremiumsInvestments100.0100.0100.0100.00.0100.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value9.06.0119.08.07.010.010.09.05.08.08.08.06.09.08.07.04.06.05.06.04.07.06.06.06.07.05.05.06.03.06.06.06.06.07.07.07.07.07.07.07.07.07.07.08.0
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:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount cma:TaxCreditsandBenefitsRelatedToTaxCreditEntities, us-gaap:ConsolidatedEntities

us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount

cma:LowIncomeHousingTaxCredits, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Affordable
Period End2021-06-302021-03-312020-06-302020-03-31
Value17161616
Percentage of AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount100.0100.0100.0100.0

cma:OtherTaxBenefitsRelatedToTaxCreditEntities, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Affordable
Period End2021-06-302021-03-312020-06-302020-03-31
Value4.04.03.04.0
Percentage of AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount23.525.018.825.0

us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount cma:TaxCreditsandBenefitsRelatedToTaxCreditEntities, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

cma:LowIncomeHousingTaxCredits, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Affordable
Period End2020-09-302020-06-302019-09-302019-06-30
Value17161615
Percentage of AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount0.0100.00.00.0

cma:OtherTaxBenefitsRelatedToTaxCreditEntities, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Affordable
Period End2020-09-302020-06-302019-09-302019-06-30
Value4.03.03.04.0
Percentage of AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount0.018.80.00.0

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet

us-gaap:FinanceReceivables


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-11.03.029335084214233111115-3.02816251833361642525123188.01.03.09.012131917243743
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinanceReceivables, us-gaap:CommercialPortfolioSegment


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-12.03.028355082214233111315-4.02817261733361641515721159.0-2.01.0
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet109.1100.096.6106.1100.097.6100.0100.0100.0100.0118.2100.0133.3100.0106.2104.094.4100.0100.0100.097.698.1111.891.383.3112.5-200.033.3

us-gaap:FinanceReceivables, us-gaap:ConsumerPortfolioSegment


Allowance
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1.0-2.00.02.00.00.00.00.0-2.00.01.00.0-1.0-1.01.00.00.00.01.01.0-6.02.03.0-1.03.02.0
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet-9.1-6.10.02.40.00.00.00.0-18.20.0-33.30.0-6.2-4.05.60.00.00.02.41.9-11.88.716.7-12.5300.066.7

us-gaap:AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization cma:TaxCreditsandBenefitsRelatedToTaxCreditEntities, us-gaap:ConsolidatedEntities

us-gaap:AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization

cma:LowIncomeHousingTaxCredits, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Amortization
Period End2021-06-302021-03-312020-06-302020-03-31
Value18171717
Percentage of AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization100.0100.0100.0100.0

us-gaap:AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization cma:TaxCreditsandBenefitsRelatedToTaxCreditEntities, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

cma:LowIncomeHousingTaxCredits, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Amortization
Period End2020-09-302020-06-302019-09-302019-06-30
Value17171617
Percentage of AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization0.0100.00.00.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount us-gaap:Range, us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount

srt:Maximum, us-gaap:EmployeeStockOption


Antidilutive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value95.2595.25095.2595.2595.25095.2595.2595.2595.25000
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.00.00.00.0

srt:Minimum, us-gaap:EmployeeStockOption


Antidilutive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value79.0167.53-0.3139.139.156.79067.5379.0180.1795.25000
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfNetIncomePerOutstandingUnitAmount83.070.90.041.041.059.60.070.983.084.2100.00.00.00.0

us-gaap:AvailableForSaleSecuritiesGrossRealizedGains us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesGrossRealizedGains

us-gaap:DebtSecurities


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-30
Value0.00.01.00.01.00.00.00.01.00.00.01.00.0
Percentage of AvailableForSaleSecuritiesGrossRealizedGains0.00.0100.00.0100.00.00.00.0100.00.00.0100.00.0

us-gaap:AvailableForSaleSecuritiesGrossRealizedLosses us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesGrossRealizedLosses

us-gaap:DebtSecurities


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-30
Value0.00.00.01.00.00.00.08.01.0200.00.00.0
Percentage of AvailableForSaleSecuritiesGrossRealizedLosses0.00.00.0100.00.00.00.0100.0100.0100.00.00.00.0

us-gaap:BankOwnedLifeInsuranceIncome

us-gaap:BankOwnedLifeInsuranceIncome


Bank
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9.01111129.01210.011119.010.0119.09.012129.010.012129.09.01110.010.09.08.011119.09.01210.09.09.010.010.010.010.010.09.08.0149.09.08.0
Percentage of BankOwnedLifeInsuranceIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BrokerageCommissionsRevenue

us-gaap:BrokerageCommissionsRevenue


Brokerage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.04.04.05.05.07.07.07.07.07.07.07.06.07.06.06.06.05.05.05.05.04.04.05.05.04.04.04.04.05.03.05.04.05.05.05.05.06.05.05.06.06.07.06.06.06.0
Percentage of BrokerageCommissionsRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1 cma:DerivativePurpose, us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship

us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1

cma:RiskManagementDerivatives, us-gaap:InterestRateSwap, us-gaap:FairValueHedging


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-17.0-17.0-17.0-16.0-12.0-6.0-3.0-2.00.01.00.0-1.0-2.0-3.0-5.0-7.0-10.0-10.0
Percentage of ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


Common
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.680.680.680.680.680.670.670.670.670.60.60.340.30.30.30.260.230.230.230.220.210.210.210.210.20.20.20.20.190.170.170.170.170.150.150.150.10.10.10.10.10.10.050.050.05
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses cma:DefinedBenefitsComponents, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

cma:Componentrecognizedinnoninterestexpense, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value1313148.08.0-9.0-13.0-12.0-13.0-11.0-10.0-11.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:Componentrecognizedinnoninterestexpense, us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value3.02.02.01.0-2.0-2.0-2.0-3.0-2.0-2.0-2.0-2.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses23.115.414.312.5-25.022.215.425.015.418.220.018.2

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.03.02.02.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses0.00.015.414.3

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-312017-12-312017-09-302016-12-312016-09-30
Value8.07.010.09.0-11.0-11.0-15.0-7.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses0.00.076.964.30.0100.00.00.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit cma:DefinedBenefitsComponents, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

cma:Componentrecognizedinnoninterestexpense, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-5000000.0-5000000.0-5000000.0-5000000.0-4000000.0-5000000.0-5000000.0-4000000.0-5000000.0-5000000.0-4000000.0-5000000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:Componentrecognizedinnoninterestexpense, us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value-2000000.0-2000000.0-2000000.0-2000000.0-2000000.0-2000000.0-1000000.0-3000000.0-2000000.0-2000000.0-2000000.0-2000000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit40.040.040.040.050.040.020.075.040.040.050.040.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value-2000000.0-1000000.0-2000000.0-2000000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.00.040.040.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-312017-12-312017-09-302016-12-312016-09-30
Value-4000000.0-5000000.0-5000000.0-5000000.0-5000000.0-5000000.0-5000000.01000000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.00.0100.0100.00.0100.00.00.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets cma:DefinedBenefitsComponents, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

cma:Componentrecognizedinnoninterestexpense, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value1.01.00.01.00.01.00.01.01.01.00.01.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.0

cma:Componentrecognizedinnoninterestexpense, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value434243414142414141393940
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets4300.04200.00.04100.00.04200.00.04100.04100.03900.00.04000.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302017-12-312017-09-302016-12-312016-09-30
Value0.01.01.01.01.01.01.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets0.00.0100.00.0100.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-312017-12-312017-09-302016-12-312016-09-30
Value5150454641394339
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets0.00.04500.00.00.03900.00.00.0

us-gaap:DefinedBenefitPlanInterestCost cma:DefinedBenefitsComponents, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

cma:Componentrecognizedinnoninterestexpense, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value1.00.00.00.00.01.00.00.01.01.00.01.0
Percentage of DefinedBenefitPlanInterestCost100.00.00.00.00.0100.00.00.0100.0100.00.0100.0

cma:Componentrecognizedinnoninterestexpense, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value181718202020191819191920
Percentage of DefinedBenefitPlanInterestCost1800.00.00.00.00.02000.00.00.01900.01900.00.02000.0

cma:Componentrecognizedinnoninterestexpense, us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value2.02.02.03.02.02.02.02.02.02.02.02.0
Percentage of DefinedBenefitPlanInterestCost200.00.00.00.00.0200.00.00.0200.0200.00.0200.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.02.02.02.0
Percentage of DefinedBenefitPlanInterestCost0.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-312017-12-312017-09-302016-12-312016-09-30
Value1515171820191823
Percentage of DefinedBenefitPlanInterestCost0.00.00.00.00.01900.00.00.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-21.0-20.0-6.0-6.0-8.0-5.0-6.0-9.0-7.0-7.0-4.0-4.0-5.0-5.0-4.0-5.0-5.0-4.0-5.04.04.03.0141112111110.010.09.02321232121192219
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:AdjustmentsForChangeInAccountingPrinciple

srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value-4.0-5.0-6.0-8.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost19.025.075.0160.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.04.02.03.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-9.5-20.0-25.0-60.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.0-1.00.00.0-1.00.01.0-1.00.00.0-1.00.01.00.00.00.00.00.00.00.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-0.05.0-0.0-0.012.5-0.0-16.711.1-0.0-0.025.0-0.0-20.0-0.0-0.0-0.0-0.0-0.0-0.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-23.0-23.0-8.0-9.0-9.0-8.0-10.0-10.0-10.0-10.0-8.0-7.0-7.0-7.0-7.0-7.0-7.0-7.0-8.00.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost109.5115.0133.3150.0112.5160.0166.7111.1142.9142.9200.0175.0140.0140.0175.0140.0140.0175.0160.00.0

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value3.02.03.02.03.03.03.03.02.02.02.03.04.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-50.0-25.0-60.0-22.2-42.9-42.9-75.0-60.0-40.0-40.0-40.0-75.0100.0

us-gaap:DefinedBenefitPlanServiceCost cma:DefinedBenefitsComponents, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

cma:Salariesandbenefitsexpense, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value8.08.08.08.07.08.07.08.07.07.07.07.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cma:Salariesandbenefitsexpense, us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value0.00.01.00.01.01.00.01.00.00.00.01.0
Percentage of DefinedBenefitPlanServiceCost0.00.012.50.014.312.50.012.50.00.00.014.3

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2021-06-302020-06-302020-03-31
Value1.00.01.0
Percentage of DefinedBenefitPlanServiceCost0.00.012.5

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-312017-12-312017-09-302016-12-312016-09-30
Value9.010.08.08.08.07.07.08.0
Percentage of DefinedBenefitPlanServiceCost0.00.0100.0100.00.0100.00.00.0

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
Value26252627292630272829303029313031293130322930283030303131322930303230333334333231302930323032
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 End2021-06-302021-03-312020-06-302020-03-31
Value22301920
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet cma:DerivativePurpose

cma:CustomerInitiatedAndOtherActivitiesDerivatives


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value22301910.01920241619182121191618171917231716121514
Percentage of DerivativeGainLossOnDerivativeNet100.0100.00.00.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DerivativeGainLossOnDerivativeNet cma:DerivativePurpose, us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

cma:CustomerInitiatedAndOtherActivitiesDerivatives, us-gaap:EnergyRelatedDerivative, us-gaap:OtherIncome


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302016-09-302016-06-302015-09-30
Value2.04.0-2.00.02.01.01.01.02.01.03.01.00.00.01.01.00.01.01.0
Percentage of DerivativeGainLossOnDerivativeNet9.113.30.00.010.55.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:CustomerInitiatedAndOtherActivitiesDerivatives, us-gaap:ForeignExchangeContract, us-gaap:ForeignCurrencyGainLoss


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1111119.09.01110.0111111121112121211111111119.010.010.09.0
Percentage of DerivativeGainLossOnDerivativeNet50.036.70.00.047.455.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cma:CustomerInitiatedAndOtherActivitiesDerivatives, us-gaap:InterestRateContract, us-gaap:OtherIncome


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value9.01510.01.08.08.0134.06.06.06.09.07.04.06.05.07.06.0116.06.02.05.04.0
Percentage of DerivativeGainLossOnDerivativeNet40.950.00.00.042.140.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value929594949894969710010599100585252534642394038373837373636363635313132322829292020201818189.08.09.0
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value929594949894969710010599100585252534642394038373837373636363635-221.03132322829292020201718188.09.09.0
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-712.9100.0100.0100.0100.0100.0100.0100.0100.0100.094.4100.0100.088.9112.5100.0

us-gaap:DividendsPreferredStock

us-gaap:DividendsPreferredStock


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302010-12-312010-09-302010-06-302010-03-31
Value5.06.05.08.00.00.00.0123
Percentage of DividendsPreferredStock100.0100.0100.0100.00.00.00.0100.0

us-gaap:DividendsPreferredStockCash

us-gaap:DividendsPreferredStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302010-12-312010-09-302010-06-302010-03-31
Value5.06.05.08.00.00.00.038
Percentage of DividendsPreferredStockCash100.0100.0100.0100.00.00.00.0100.0

us-gaap:DividendsPreferredStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302010-12-312010-09-302010-06-302010-03-31
Value5.06.05.08.00.00.00.038
Percentage of DividendsPreferredStockCash100.0100.0100.0100.00.00.00.0100.0

us-gaap:DividendsPreferredStockStock

us-gaap:DividendsPreferredStockStock


Dividends
Period End2021-06-302021-03-312020-12-312020-09-30
Value5.06.05.08.0
Percentage of DividendsPreferredStockStock100.0100.0100.0100.0

us-gaap:EquipmentExpense

us-gaap:EquipmentExpense


Equipment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value13121312121213131212141211111112111113131413131413131414151415151515151716171717171516151517
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: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
Value7.06.09.08.08.08.06.06.06.05.06.0111213131312131514141110.09.09.09.08.09.08.08.07.09.08.09.09.09.010.010.08.08.0121515141617
Percentage of FederalDepositInsuranceCorporationPremiumExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

us-gaap:FinanceReceivables


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value191310.0207.05.06.019119.010.010.0239.0131221111219122525111715192119182820181423161917
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinanceReceivables, us-gaap:CommercialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value19129.0186.05.05.01710.08.08.09.0228.01110.0209.010.01811241710.016121819
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.092.390.090.085.7100.083.389.590.988.980.090.095.788.984.683.395.281.883.394.791.796.068.090.994.180.094.790.5

us-gaap:FinanceReceivables, us-gaap:ConsumerPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.01.01.02.01.00.01.02.01.01.02.01.01.01.02.02.01.02.02.01.01.01.08.01.01.03.01.02.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery0.07.710.010.014.30.016.710.59.111.120.010.04.311.115.416.74.818.216.75.38.34.032.09.15.920.05.39.5

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinanceReceivables


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value8.016395357892761442021252037293739444835547776343523202428304139353860596462
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinanceReceivables, us-gaap:CommercialPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value7.0153753568726594319212418362836374246345275743131211620
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs87.593.894.9100.098.297.896.396.797.795.0100.096.090.097.396.697.394.995.595.897.196.397.497.491.288.691.380.083.3

us-gaap:FinanceReceivables, us-gaap:ConsumerPortfolioSegment


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1.01.02.00.01.02.01.02.01.01.00.01.02.01.01.01.02.02.02.01.02.02.02.03.04.02.04.04.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs12.56.25.10.01.82.23.73.32.35.00.04.010.02.73.42.75.14.54.22.93.72.62.68.811.48.720.016.7

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2


Financing
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-7.0130.09.0110.0-6.05.026-11.06185-5.011040174391325.0179.01.0123.02927432.040
Percentage of FinancingReceivableModificationsPostModificationRecordedInvestment2100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1 us-gaap:LoanRestructuringModification

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1

us-gaap:PaymentDeferral


Financing
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-1.06.06.010.0-5.0170.00.00.00.00.00.0-5.04.00.00.00.00.0227.0141.01.016-10.010.0
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1100.0100.0100.0100.0100.0100.00.00.00.00.00.00.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax

us-gaap:ForeignCurrencyTransactionGainLossBeforeTax


Foreign
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value9.09.0111111111111121212121111111110.01110.01110.09.010.010.09.012
Percentage of ForeignCurrencyTransactionGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnCashFlowHedgeIneffectivenessNet

us-gaap:GainLossOnCashFlowHedgeIneffectivenessNet


Gain
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.0-18.028205
Percentage of GainLossOnCashFlowHedgeIneffectivenessNet100.0100.0100.0100.0

us-gaap:GainsLossesOnSalesOfOtherRealEstate

us-gaap:GainsLossesOnSalesOfOtherRealEstate


Gains
Period End2020-12-31
Value0
Percentage of GainsLossesOnSalesOfOtherRealEstate0.0

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


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
Value5.0262114-52.0-12.01247-59.0-27.03070-29.0-22.01345-22.05.0-34.0313010.03513-52.0-31.030161.0-61.0512237-72.0562638-85.0584119-59.041257.0-16.0
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInDeposits


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1657824450072710356-29.060613141377-1586.0-104.0-1241.0-660.0-77.028876-2079.0-5.0-312.0282328-3537.01168390787184-192.034425082552301635-636.00.0237943711046003981764-92.01226-146.07917056
Percentage of IncreaseDecreaseInDeposits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInInterestAndDividendsReceivable

us-gaap:IncreaseDecreaseInInterestAndDividendsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value-6.05.07.011-35.0-8.0-16.0-13.0-8.0209.0-2.01226204.0-3.01.03.04.05.0-2.06.01.01.00.0-14.0-5.010.0
Percentage of IncreaseDecreaseInInterestAndDividendsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value2000000.01000000.001000000.000-1000000.01000000.01000000.02000000.002000000.02000000.02000000.002000000.03000000.03000000.01000000.02000000.02000000.01000000.002000000.02000000.02000000.002000000.02000000.02000000.001000000.01000000.001000000.0001000000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.00.0100.00.00.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.00.0100.00.00.0100.0

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeOperating


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value479459489484511609659711727710704675650590578579529496484480473472457448444435438436441435456439443446456460470478481463431434445456476476479511552563
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio

us-gaap:InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio


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
Value404386414408434517564619635621604581568509498500453421412411406406395390389379383381385376397381388390398400408411415405369375394399412412
Percentage of InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value5.07.010.0152056707367524335281613119.09.010.010.010.010.010.01111111211111112131515161718192124232224272935
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:InterestExpenseShortTermBorrowings

us-gaap:InterestExpenseShortTermBorrowings


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-30
Value0.00.01.00.00.02.06.01.00.01.00.00.00.03.00.00.0
Percentage of InterestExpenseShortTermBorrowings0.00.0100.00.00.0100.0100.0100.00.0100.00.00.00.0100.00.00.0

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
Value600625486453333102536551559619598599619537528522483454420434396299373396374399413409405401421404401400408405416420425385344346348282296240
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:InterestPaid

us-gaap:InterestPaid


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value10.02017345010211512712298897359403335272736243219301926192724252526273229343237323837423447556263
Percentage of InterestPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value277282271257249242257253245265250254250255235225219233219247247248262243251253245248240247258255245251255253250261257245235238248234224213
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:LegalFees

us-gaap:LegalFees


Legal
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.05.05.05.02.05.05.04.01.06.04.04.03.01.04.05.05.05.04.05.05.06.05.05.05.06.08.05.05.05.05.07.08.05.08.09.09.014128.09.09.09.09.08.0
Percentage of LegalFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense

us-gaap:NoninterestExpense


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value463447473446440425451435424433448452448446483463457457461493519460486461436460419397404406473417416416427449433448478460409415437402397404425399429397
Percentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense us-gaap:StatementBusinessSegments

cma:BusinessBank


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
Value204215219206207194203199195198212210182184210199196197195215222207208202176200149152143146197153147146148145150159162163156160157156157162
Percentage of NoninterestExpense44.148.146.346.247.045.645.045.746.045.747.346.540.641.343.543.042.943.142.343.642.845.042.843.840.443.535.638.335.436.041.636.735.335.134.732.334.635.533.935.438.138.635.938.839.540.1

cma:CaliforniaDomain


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value1161049893
Percentage of NoninterestExpense25.123.322.321.9

cma:Finance


Noninterest
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.01.00.01.00.00.0-1.00.00.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.02.02.02.02.03.02.03.0-29.02.03.03.02.02.03.04.02.03.03.04.02.03.03.0122.02.02.0
Percentage of NoninterestExpense0.20.20.00.20.00.0-0.20.00.0-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.20.40.40.40.40.70.40.7-7.30.50.70.60.50.50.70.90.40.70.70.80.40.70.72.70.50.50.5

cma:FinanceOther


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value9.07.012115.010.0181815189.01713131110.010.0116.08.0111.06.00.04.07.09.0-18.01111175.014161445292450471115
Percentage of NoninterestExpense1.91.62.52.51.12.44.04.13.54.22.03.82.92.92.32.22.22.41.31.62.10.21.20.00.91.52.1-4.52.72.73.61.23.43.83.310.06.75.410.510.22.73.6

cma:MichiganDomain


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value136135138137
Percentage of NoninterestExpense29.430.231.432.2

cma:Other1


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value8.07.011114.010.01719151810.0181414121111127.09.09.0-1.04.0-2.01.05.06.0119.08.0143.0121310.043232447
Percentage of NoninterestExpense1.71.62.32.50.92.43.84.43.54.22.24.03.13.12.52.42.42.61.51.81.7-0.20.8-0.40.21.11.42.82.22.03.00.72.93.12.39.65.35.49.8

cma:OtherMarkets


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
Value11111311410510293969092919498949111911411010611311211610510811011010256514548495153441191517242424202122252221
Percentage of NoninterestExpense24.025.324.123.523.221.921.320.721.721.021.021.721.020.424.624.624.123.224.522.722.422.822.223.925.222.213.412.811.111.810.412.212.710.627.93.33.95.45.05.24.95.15.06.25.55.2

cma:RetailBank


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
Value173149162153155149156149147145152153178177188184180179188195205179192185182176178185174171178178177175181181177184182174163162168166160154
Percentage of NoninterestExpense37.433.334.234.335.235.134.634.334.733.533.933.839.739.738.939.739.439.240.839.639.538.939.540.141.738.342.546.643.142.137.642.742.542.142.440.340.941.138.137.839.939.038.441.340.338.1

cma:TexasDomain


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value91888983
Percentage of NoninterestExpense19.719.720.219.5

cma:WealthManagement


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value777680767372756967727572757274707170727581738074747783787678818178798477788183777778
Percentage of NoninterestExpense16.617.016.917.016.616.916.615.915.816.616.715.916.716.115.315.115.515.315.615.215.615.916.516.117.016.719.819.618.819.217.119.418.819.019.717.118.018.117.416.718.818.8

stpr:CA


Noninterest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value10210398105102991001071041051061071039896101110120104108102100100102102100969810110097100979899
Percentage of NoninterestExpense22.923.423.123.323.423.323.123.923.023.423.822.222.221.421.021.922.323.122.622.222.122.921.724.325.724.823.620.724.224.023.323.421.622.622.1

stpr:MI


Noninterest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value139139140142139134140146143144144151144145150149161159150162152128155157166159161218167161168189173175179
Percentage of NoninterestExpense31.231.632.931.532.031.632.332.631.632.132.331.331.131.732.832.332.730.632.633.333.029.433.737.541.839.439.746.140.038.740.444.338.540.440.0

stpr:TX


Noninterest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value8991849086848492909292959294949210211310010297949695968990919388918990889389
Percentage of NoninterestExpense20.020.719.820.019.819.819.420.519.920.520.619.719.920.620.620.020.721.821.721.021.021.620.922.724.222.022.219.222.321.221.920.820.020.320.818.6

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
Value284270265252247237266256250238250234248244285275276271267272269246270264261256225215220208204214208200204197211206182201202207215186194194
Percentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome us-gaap:StatementBusinessSegments

cma:BusinessBank


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
Value167159149135144127143140136136144137126121156148152144146145142135147145140142101971008780898077797683817476797781707676
Percentage of NoninterestIncome58.858.956.253.658.353.653.854.754.457.157.658.550.849.654.753.855.153.154.753.352.854.954.454.953.655.544.945.145.541.839.241.638.538.538.738.639.339.340.737.839.137.237.737.639.239.2

cma:CaliforniaDomain


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value41483433
Percentage of NoninterestIncome14.417.813.813.9

cma:Finance


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9.012141611141312144.011-7.01211141310.01110.0131314151514121615151414181514161417131625111623111412
Percentage of NoninterestIncome3.24.45.36.34.55.94.94.75.61.74.4-3.04.84.54.94.73.64.13.74.84.85.75.65.75.44.77.17.06.86.76.98.47.27.07.87.18.16.38.812.45.47.710.75.97.26.2

cma:FinanceOther


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1616232513121716137.04.0-3.01313161512151116179.01711151316171716201818171818141819211424
Percentage of NoninterestIncome5.65.98.79.95.35.16.46.25.22.91.6-1.35.25.35.65.54.35.54.15.96.33.76.34.25.75.17.17.97.77.79.88.48.78.58.89.16.68.710.410.46.911.6

cma:FinanceOther1MemberDomain


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1616232513121716137.05.0-4.014131716
Percentage of NoninterestIncome5.65.98.79.95.35.16.46.25.22.92.0-1.75.65.36.05.8

cma:MichiganDomain


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value72666472
Percentage of NoninterestIncome25.424.425.930.4

cma:Other1


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value7.04.09.09.02.0-2.04.04.0-1.03.0-6.03.01.02.02.02.02.04.01.03.04.0-5.02.0-4.01.01.00.02.02.02.06.00.03.03.02.04.0-3.05.02.0
Percentage of NoninterestIncome2.51.53.43.60.8-0.81.51.6-0.41.3-2.41.30.40.80.70.70.71.50.41.11.5-2.00.7-1.50.40.40.00.90.91.02.90.01.41.51.02.0-1.42.41.1

cma:OtherMarkets


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
Value120104971001048793949187958690881111071051001009710193989693884542414026303325656.018148.010.0131110.010.01510.0
Percentage of NoninterestIncome42.338.536.639.742.136.735.036.736.436.638.036.836.336.138.938.938.036.937.535.737.537.836.336.435.634.420.019.518.619.212.714.015.912.531.93.08.56.84.45.06.45.34.75.47.75.2

cma:RetailBank


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
Value30283028242837313331363542424949484848504843484946434442414143464541424148423448454243454244
Percentage of NoninterestIncome10.610.411.311.19.711.813.912.113.213.014.415.016.917.217.217.817.417.718.018.417.817.517.818.617.616.819.619.518.619.721.121.521.620.520.620.822.720.418.723.922.320.320.024.221.622.7

cma:TexasDomain


Noninterest
Period End2021-06-302021-03-312020-06-302020-03-31
Value35363030
Percentage of NoninterestIncome12.313.312.112.7

cma:WealthManagement


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value716763646670696968646566676864636464626162595859605864596264616165656562666555566464
Percentage of NoninterestIncome25.024.823.825.426.729.525.927.027.226.926.028.227.027.922.522.923.223.623.222.423.024.021.522.323.022.728.427.428.230.829.928.531.232.531.931.531.331.630.227.931.730.9

stpr:CA


Noninterest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3336365241404140434239434145414244393841383738383738343742363535333533
Percentage of NoninterestIncome13.114.615.219.516.016.017.216.018.416.916.015.114.916.315.115.716.214.515.415.214.414.214.816.917.217.316.318.119.617.317.517.216.816.616.0

stpr:MI


Noninterest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value6664727374727175757373827981838082817682858581928389878988889298949798
Percentage of NoninterestIncome26.225.930.427.428.928.829.830.032.129.429.928.828.729.330.630.030.130.130.930.432.232.631.640.938.640.541.843.641.142.346.048.047.746.047.6

stpr:TX


Noninterest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value283030313134323633303133333332343331303234313634363531323633313130323126
Percentage of NoninterestIncome11.112.112.711.712.113.613.414.414.112.112.711.612.012.011.812.712.111.512.211.912.911.914.115.116.715.914.915.716.815.915.515.215.215.215.014.3

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
Value21253429352039232225232922232625312927292917232626263934373325283930322834292115293731182220
Percentage of NoninterestIncomeOtherOperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OccupancyNet

us-gaap:OccupancyNet


Occupancy
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value38394240373741393737393837384038383840403938414139384646394041413939424040414744384042403941
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:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax


Other
Period End2021-06-302021-03-312020-06-302020-03-312017-12-312016-12-312015-12-31
Value5.06.06.01.01721-19.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-6000000.0-6000000.0-6000000.0-7000000.0-7000000.0-7000000.0-7000000.0-7000000.0-6000000.0-7000000.0-7000000.0-6000000.0-7000000.0-7000000.0-7000000.0-7000000.0-6000000.0-7000000.0-7000000.00001000000.002000000.001000000.0001000000.001000000.01000000.0
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.00.0100.00.00.0100.00.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-1.0-140.0-43.0-29.0-29.0247-8.0309190142-29.0-42.0-109.0-65.0-1.0140.0-132.0-32.02795-61.040-38.03151-20.01460-47.0-18.0-142.0-11.0-50.0381419
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-17.0-32.0-21.0-20.07.0155-20.014373.00.00.00.00.0
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-3.0-3.0-116.0-7.0-6.0-7.0-129.0-2.0-3.0-3.0140-7.0-6.0-6.0-60.0-3.0-4.0-4.0-41.0-59.06.06.0-45.0111211-146.033-7.0-6.0197151414-110.010.01111
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value24242424193.00.0-1.00.00.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax100.0100.0100.0100.0100.0100.00.0100.00.00.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value19181819132.00.0-1.00.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax100.0100.0100.0100.0100.0100.00.0100.00.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value225.06.01.00.00.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax100.0100.0100.0100.00.00.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-10.0-10.0110-16.0-15.0-16.072-9.0-10.0-11.0-16.0-15.0-15.0-15.0-13.0-13.0-12.0-13.0-17.0-48.09.010.0-17.0-18.0-18.0-17.0-9.0-12.0-8.0-10.0-154.0109-23.0-21.0-108.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-1.0-183.0-41.0-1.028205-25.018474.00.00.00.00.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-30
Value2.0-14.0-3.0-1.020157-19.014363.00.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0-4.00.00.08.048-6.04.0111.00.00.00.00.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax0.0100.00.00.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.0-43.0-39.0-37.0323-10.038120109185-57.0-55.0-142.0-99.0-3.023-2.0-210.0-51.042149-99.061-62.04581-31.02294-73.0-28.0-224.0-18.0-75.0602835
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-43.0-29.0-29.0247-8.0309184142-44.0-42.0-109.0-65.0-2.014-1.0-133.0-32.02794-62.039-40.02951-20.01461-47.0-17.0-142.0-11.0-49.0391822
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-13.0-10.0-8.076-2.08.0292543-13.0-13.0-33.0-34.0-1.09.0-1.0-77.0-19.01555-37.022-22.01630-11.08.033-26.0-11.0-82.0-7.0-26.02110.013
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherInterestAndDividendIncome

us-gaap:OtherInterestAndDividendIncome


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
Value5.04.04.04.03.01820171717292818171617141310.08.05.04.06.04.03.03.05.03.03.04.04.04.03.03.03.03.03.03.03.04.03.02.02.02.03.03.0
Percentage of OtherInterestAndDividendIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value10.0-1.02323252524182217222023153233373329373238443939394353393844375045444655593837333642353535
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:OtherNoninterestExpense us-gaap:AdjustmentsForChangeInAccountingPrinciple

srt:RevisionOfPriorPeriodChangeInAccountingPrincipleAdjustment


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value-4.0-5.0-6.0-8.0
Percentage of OtherNoninterestExpense-40.0500.0-24.0-32.0

us-gaap:PaymentsForFederalHomeLoanBankAdvances

us-gaap:PaymentsForFederalHomeLoanBankAdvances


Payments
Period End2021-06-302021-03-31
Value0.0115
Percentage of PaymentsForFederalHomeLoanBankAdvances0.0100.0

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForProceedsFromLoansAndLeases


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-931.0-1685.0-49.0-1044.0553174-1095.0-266.015341511165-771.055398-18.0-177.01122-752.0-154.0-1102.01040352208-752.0701487890-168.0139610261315-1301.0408-971.01878241102235715143.0124-946.091-150.0-65.0-1135.0
Percentage of PaymentsForProceedsFromLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock


Payments
Period End2021-06-302021-03-31
Value5.06.0
Percentage of PaymentsOfDividendsPreferredStockAndPreferenceStock100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecurities

us-gaap:PaymentsToAcquireAvailableForSaleSecurities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value207817501008340946792062567851115324141727450441457486470169964964046529122958785684879594734414993265444009558381505820869144619795804481635254221300
Percentage of PaymentsToAcquireAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireFederalHomeLoanBankStock

us-gaap:PaymentsToAcquireFederalHomeLoanBankStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-03-312015-03-31
Value0.00.020310.015233160.00.00.0410.020220.00.0210.0
Percentage of PaymentsToAcquireFederalHomeLoanBankStock0.00.0100.0100.00.0100.0100.0100.00.00.00.0100.00.0100.0100.00.00.0100.00.0

us-gaap:PreferredStockDividendRatePercentage

us-gaap:PreferredStockDividendRatePercentage


Preferred
Period End2020-12-31
Value0
Percentage of PreferredStockDividendRatePercentage0.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value8.010.02.0-3.02.03.06.01.05.06.02.04.06.040166.07613111.03.0126.09.010.02610.07.05.0
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfPreferredStockPreferenceStockAndWarrants

us-gaap:ProceedsFromIssuanceOfPreferredStockPreferenceStockAndWarrants


Proceeds
Period End2020-12-31
Value0.0
Percentage of ProceedsFromIssuanceOfPreferredStockPreferenceStockAndWarrants0.0

us-gaap:ProceedsFromLegalSettlements

us-gaap:ProceedsFromLegalSettlements


Proceeds
Period End2021-06-30
Value8000000.0
Percentage of ProceedsFromLegalSettlements100.0

us-gaap:ProceedsFromLifeInsurancePolicies

us-gaap:ProceedsFromLifeInsurancePolicies


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value1.05.06.04.02.08.03.00.05.02.05.01.00.03.010.02.03.03.06.06.0
Percentage of ProceedsFromLifeInsurancePolicies100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

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
Value18279921006103371359864762450448741547145144441742737839344052340033642144044939345350341441143165782393810229249569371022726439592755716313368
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:ProceedsFromSaleOfForeclosedAssets

us-gaap:ProceedsFromSaleOfForeclosedAssets


Proceeds
Period End2020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2.02.00.01.00.00.01.01.05.01.04.0141.03.05.04.06.05.04.03.03.02.07.04.06.03.015111118
Percentage of ProceedsFromSaleOfForeclosedAssets100.0100.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses

us-gaap:ProvisionForLoanLeaseAndOtherLosses


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-135.0-182.0-17.05.01384118.03544-13.0160.0-29.01217241716351649148602647142.05.0119.09.08.013161622192218354546
Percentage of ProvisionForLoanLeaseAndOtherLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:CommitmentsToExtendCredit


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value1.0-14.0-16.01.0-3.0312.0-2.01.0
Percentage of ProvisionForLoanLeaseAndOtherLosses-0.77.794.120.0-2.27.525.0-5.72.3

us-gaap:FinanceReceivables


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-136.0-168.0-1.04.0141380140-37.043-13.0191.0-23.01416311511391447141632835164.04.06.08.07.010.0131219238.023
Percentage of ProvisionForLoanLeaseAndOtherLosses100.792.35.980.0102.292.51750.0-105.797.7100.0118.80.079.3116.794.1129.288.268.8111.487.595.995.3105.0107.774.5114.3200.080.054.588.977.8125.0100.075.0118.8104.542.1104.5

us-gaap:ProvisionForLoanLeaseAndOtherLosses us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommitmentsToExtendCredit, us-gaap:CommercialPortfolioSegment


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value2.0-13.0-16.01.0-2.024-2.01.0
Percentage of ProvisionForLoanLeaseAndOtherLosses-1.57.194.120.0-1.45.8-5.72.3

us-gaap:CommitmentsToExtendCredit, us-gaap:ConsumerPortfolioSegment


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-1.0-1.00.00.0-1.07.00.00.00.0
Percentage of ProvisionForLoanLeaseAndOtherLosses0.70.5-0.00.0-0.71.70.00.00.0

us-gaap:FinanceReceivables, us-gaap:CommercialPortfolioSegment


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-132.0-183.00.015132384155-39.043-8.021-1.0-21.02021211712401249145702537174.02.0
Percentage of ProvisionForLoanLeaseAndOtherLosses97.8100.5-0.0300.095.793.41937.5-111.497.761.5131.20.072.4166.7123.587.5100.075.0114.375.0100.098.0116.796.278.7121.4200.040.0

us-gaap:FinanceReceivables, us-gaap:ConsumerPortfolioSegment


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-4.015-1.0-11.09.0-4.0-15.02.00.0-5.0-2.02.0-2.0-6.0-5.010.0-2.0-1.0-1.02.0-2.0-4.0-7.03.0-2.0-1.00.02.0
Percentage of ProvisionForLoanLeaseAndOtherLosses3.0-8.25.9-220.06.5-1.0-187.55.70.038.5-12.50.06.9-50.0-29.441.7-11.8-6.2-2.912.5-4.1-2.7-11.711.5-4.3-7.10.040.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses us-gaap:FinancingReceivablePortfolioSegment

us-gaap:CommercialPortfolioSegment


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-130.0-196.0-16.0161304089.03744
Percentage of ProvisionForLoanLeaseAndOtherLosses96.3107.794.1320.094.299.3112.5105.7100.0

us-gaap:ConsumerPortfolioSegment


Provision
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-5.014-11.08.03.0-17.0-2.00.0
Percentage of ProvisionForLoanLeaseAndOtherLosses3.7-7.7-220.05.80.7-212.5-5.70.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses us-gaap:StatementBusinessSegments

cma:BusinessBank


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-123.0-177.0-32.0141173963.03952-6.015-1.0-17.010.0161210.02.046151306125-4.03516-2.011207.015122.0-7.019
Percentage of ProvisionForLoanLeaseAndOtherLosses91.197.3188.2280.084.896.437.5111.4118.246.293.80.058.683.366.770.662.512.593.9102.0115.4129.8178.6-80.0318.2177.8-25.084.6125.043.868.263.29.1-38.954.3

cma:CaliforniaDomain


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value-24.0-54.04746
Percentage of ProvisionForLoanLeaseAndOtherLosses17.829.734.111.2

cma:FinanceOther


Provision
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-1.01.00.00.05.01.0-4.02.01.0-2.0-4.02.0-1.02.0-5.05.0-1.0-1.0-3.03.0-2.02.0-8.0-1.0-2.01.0-4.00.0-3.02.02.00.0-6.0
Percentage of ProvisionForLoanLeaseAndOtherLosses0.7-0.50.00.062.52.9-9.1-15.46.20.013.816.7-4.211.8-31.231.2-2.0-0.7-11.56.4-14.340.0-72.7-11.1-25.07.7-25.00.0-13.610.59.10.0-17.1

cma:MichiganDomain


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value-26.0-28.04124
Percentage of ProvisionForLoanLeaseAndOtherLosses19.315.429.75.8

cma:Other1


Provision
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value-1.01.00.00.05.01.0-4.02.02.0-2.0-4.02.0-1.02.0-5.05.0-1.0-1.0-3.03.0-2.02.0-8.0-1.0-2.01.0-4.00.0-3.02.02.00.0
Percentage of ProvisionForLoanLeaseAndOtherLosses0.7-0.50.00.062.52.9-9.1-15.412.50.013.816.7-4.211.8-31.231.2-2.0-0.7-11.56.4-14.340.0-72.7-11.1-25.07.7-25.00.0-13.610.59.10.0

cma:OtherMarkets


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-7.0-15.0-24.00.01646-1.0-9.013-8.08.04.0-2.0-8.0158.0115.0-2.0-8.0-11.010.06.0-6.0-8.0-10.04.02.0-1.0316.0-7.01.03012
Percentage of ProvisionForLoanLeaseAndOtherLosses5.28.2141.20.011.611.2-12.5-25.729.561.550.00.06.9-66.762.547.168.831.2-4.1-5.4-42.321.342.9-120.0-72.7-111.150.015.4-6.2193.827.3-36.84.5166.734.3

cma:RetailBank


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-7.06.01.0-2.05.03.01.0-2.01.0-4.01.01.0-9.04.0-1.05.01210.01.03.02.0-8.0-8.00.0-6.02.010.05.06.07.07.01.06.01416
Percentage of ProvisionForLoanLeaseAndOtherLosses5.2-3.3-5.9-40.03.60.712.5-5.72.330.86.20.031.033.3-4.229.475.062.52.02.07.7-17.0-57.10.0-54.522.2125.038.537.543.831.85.327.377.845.7

cma:TexasDomain


Provision
Period End2021-06-302021-03-312020-06-302020-03-31
Value-77.0-86.031290
Percentage of ProvisionForLoanLeaseAndOtherLosses57.047.322.570.6

cma:WealthManagement


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-4.0-12.014-7.01612-1.0-3.0-5.0-5.0-2.02.01.0-4.010.0-2.0-1.0-1.03.0-5.0-3.0-9.0-1.07.0-10.0-8.02.0-4.0-6.02.03.04.012116.0
Percentage of ProvisionForLoanLeaseAndOtherLosses3.06.6-82.4-140.011.62.9-12.5-8.6-11.438.5-12.50.0-3.4-33.341.7-11.8-6.2-6.26.1-3.4-11.5-19.1-7.1140.0-90.9-88.925.0-30.8-37.512.513.621.154.561.117.1

stpr:CA


Provision
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value115151-6.0-4.0-1.03.0-9.0-2.0242421-4.017-6.0244.0-3.0141411-3.07.021-6.06.06.0-3.0
Percentage of ProvisionForLoanLeaseAndOtherLosses220.037.012.4-17.1-9.17.70.031.0-16.7100.0141.2131.2-25.034.7-4.192.38.5-21.4280.0127.3122.2-37.553.8131.2-37.527.331.6-13.6

stpr:MI


Provision
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value194024-1.0-10.05.04.01.0338.0-2.0-2.0133.0-6.06.0-13.0-8.0-8.0-9.03.0-8.0-3.0-8.0113.0-7.0-3.0
Percentage of ProvisionForLoanLeaseAndOtherLosses380.029.05.8-2.9-22.7-38.50.0-3.4275.033.3-11.8-12.581.26.1-4.123.1-27.7-57.1-160.0-81.833.3-100.0-23.1-50.068.813.6-36.8-13.6

stpr:TX


Provision
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value-25.0312905049-11.0-9.0-15.0-13.0-22.0-15.0-9.0-3.03216910.043213.0226.0176.08.09.0-4.010.0258.0
Percentage of ProvisionForLoanLeaseAndOtherLosses-500.022.570.6142.9111.484.60.051.7-108.3-91.7-88.2-56.2-18.865.3114.238.591.5150.060.0200.066.7212.546.250.056.2-18.252.6113.644.4

us-gaap:RepaymentsOfDebt

us-gaap:RepaymentsOfDebt


Repayments
Period End2021-03-31
Value2800
Percentage of RepaymentsOfDebt100.0

us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings

us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings


Repayments
Period End2020-09-302019-09-30
Value62201
Percentage of RepaymentsOfFederalHomeLoanBankBorrowings100.0100.0

us-gaap:StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants

us-gaap:StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants


Stock
Period End2020-12-312020-09-302020-06-30
Value0.0-1.0395
Percentage of StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants0.0100.0100.0

us-gaap:StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants us-gaap:StatementEquityComponents

us-gaap:PreferredStock


Stock
Period End2020-12-312020-09-302020-06-30
Value0.0-1.0395
Percentage of StockAndWarrantsIssuedDuringPeriodValuePreferredStockAndWarrants0.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value100000.0500000.0100000.0100000.00300000.0100000.00100000.0500000.00200000.0100000.01200000.0300000.0200000.0500000.02300000.02700000.0300000.0300000.0800000.00100000.0300000.0600000.0100000.0400000.0500000.01100000.0300000.0200000.0300000.0700000.00100000.001100000.0000800000.00
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.00.00.0100.00.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31