COF


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

Table of contents



us-gaap:CommonStockValue

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

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

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets
dei:LegalEntity

us-gaap:CapitalToRiskWeightedAssets
dei:LegalEntity

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:StatementEquityComponents

us-gaap:IncomeLossFromContinuingOperations
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:FinancialInstrument, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeTaxesPaid

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestExpense
us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestIncomeExpenseNet
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:FinancialInstrument, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestPaidNet

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

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:PreferredStockDividendsIncomeStatementImpact

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

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

us-gaap:Assets
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:FinancialInstrument
us-gaap:ConsolidatedEntities, us-gaap:InvestmentType
us-gaap:FinancialInstrument, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:InvestmentType, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:Liabilities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:FinancialInstrument
us-gaap:ConsolidatedEntities, us-gaap:InvestmentType
us-gaap:FinancialInstrument, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:InvestmentType, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

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

us-gaap:TierOneRiskBasedCapital
dei:LegalEntity

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssets
us-gaap:ConsolidatedEntities
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebt
us-gaap:LongtermDebtType

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

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

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:FinancialInstrument, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:NetCashProvidedByUsedInOperatingActivities

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

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxAssetsNet
us-gaap:ReasonablyPossibleSignificantChangeInUnrecognizedTaxBenefitsByItem
us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

cof:AmortizationOfBasisAdjustment

cof:Amortizationofbasisadjustment
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
cof:FairValueAssetsMeasureonRecurringBasisUnrealizedGainLossinOCI
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cof:FinancingReceivableAllowanceForCreditLossAdjustmentsOther
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanRestructuringModification
cof:FinancingReceivableModificationsAverageRateReduction
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LoanRestructuringModification
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:LoanRestructuringModification
us-gaap:LoanRestructuringModification
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanRestructuringModification
cof:FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LoanRestructuringModification
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:LoanRestructuringModification
us-gaap:LoanRestructuringModification
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
cof:GainLossOnCashFlowHedgesRecognizedInEarnings
us-gaap:FairValueByMeasurementFrequency
cof:GainLossOnFairValueAssetsRecognizedInEarnings
us-gaap:FairValueByMeasurementFrequency
cof:GainLossOnFairValueLoansHeldForInvestmentRecognizedInEarnings
us-gaap:FairValueByMeasurementFrequency
cof:GainLossOnFairValueLoansHeldForSaleRecognizedInEarnings
us-gaap:FairValueByMeasurementFrequency
cof:GainLossOnFairValueOtherAssetsRecognizedInEarnings
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
cof:GainOrLossOnFairValueHedgesRecognizedInNetInterestIncome
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
cof:GainorLossonFairValueHedgesRecognizedinNetInterestIncome
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
cof:IncreaseDecreaseinAllowanceforCreditLoss

cof:InterchangeFeesNet

cof:InterestExpenseOtherBorrowings

cof:InterestExpenseSecuredDebt

cof:InterestExpenseUnsecuredDebt

cof:IssuanceCostForPreferredStockRedeemed
us-gaap:LitigationCase, us-gaap:LitigationStatus
cof:LitigationSettlementAmountAttributabletoReportingEntityandThirdParty
us-gaap:LitigationCase, us-gaap:SubsequentEventType
cof:LitigationSettlementAmountPaidFromReserveToOtherParty

cof:NoninterestIncomeExcludingRevenueFromContractWithCustomer
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

cof:NoninterestIncomeExcludingRevenuefromContractwithCustomer
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

cof:OtherComprehensiveIncomeLossBeforeTaxAttributableToParent

cof:OtherComprehensiveIncomeLossOtherTaxAttributableToParent

cof:OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentBeforeTaxPortionAttributableToParent

cof:OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentNetOfTaxPortionAttributableToParent

cof:OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentTaxPortionAttributableToParent

cof:OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent

cof:ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic

cof:PaymentsForProceedsFromSaleOfFinancingReceivableHeldForInvestment

cof:PaymentsForRedemptionOfPreferredStock

cof:ProceedsfromIssuanceofUnsecuredDebtandLongTermFHLBAdvancesNetofIssuanceCost
us-gaap:IncomeStatementLocation
cof:RealizedGainsLossesonForeignExchangeContractsReclassifiedfromAOCI

cof:RepaymentsofUnsecuredDebtandLongTermFHLBAdvances

cof:ServiceChargesandOtherCustomerRelatedFees

cof:StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures
us-gaap:StatementEquityComponents

cof:StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercisedAndRestrictedStockVesting
us-gaap:StatementEquityComponents

cof:StockIssuedDuringPeriodValueStockOptionsandWarrantsExercisedandRestrictedStockVesting
us-gaap:StatementEquityComponents

cof:TransferOfToPortfolioFinancingReceivablesToFromHeldForSale

cof:UncollectiblePortionofBilledFinanceChargesandFees

us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount

us-gaap:AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1

us-gaap:CommunicationsAndInformationTechnology

us-gaap:DebtAndEquitySecuritiesGainLoss
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DebtAndEquitySecuritiesUnrealizedGainLoss

us-gaap:DebtSecuritiesAvailableForSaleChangeInPresentValueInterestIncome

us-gaap:DebtSecuritiesAvailableForSaleGainLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DepreciationAndAmortization
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation, us-gaap:UnderlyingAssetClass
us-gaap:IncomeStatementLocation

us-gaap:DividendsCommonStock
us-gaap:StatementEquityComponents

us-gaap:DividendsPreferredStockCash
us-gaap:StatementEquityComponents
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationIssues
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersIntoLevel3
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersOutOfLevel3
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:TypeOfArrangement

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

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

us-gaap:FinancingReceivableNonaccrualInterestIncome
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivableRevolvingConvertedToTermLoanDuringPeriod
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanRestructuringModification
us-gaap:FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:LoanRestructuringModification
us-gaap:LoanRestructuringModification
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:GainLossFromComponentsExcludedFromAssessmentOfFairValueHedgeEffectivenessNet
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:GainLossOnFairValueHedgesRecognizedInEarnings

us-gaap:GainLossOnSalesOfLoansNet

us-gaap:GoodwillOtherIncreaseDecrease
us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare

us-gaap:IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInInterestPayableNet

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeSecurities

us-gaap:InterestExpenseDeposits

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:LaborAndRelatedExpense
us-gaap:LitigationCase, us-gaap:SubsequentEventType
us-gaap:LitigationSettlementAmountAwardedToOtherParty

us-gaap:MarketingExpense

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

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

us-gaap:NoninterestIncomeOther
us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:FinancialInstrument, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:OccupancyNet

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxPortionAttributableToParent
us-gaap:FinancialInstrument, us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:FinancialInstrument, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherInterestAndDividendIncome

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoninterestExpense

us-gaap:PaymentsForOriginationAndPurchasesOfLoansHeldForSale

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfPreferredStockAndPreferenceStock

us-gaap:ProceedsFromIssuanceOfSecuredDebt

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities

us-gaap:ProceedsFromRecoveriesOfLoanPreviouslyChargedOff

us-gaap:ProceedsFromRepaymentsOfOtherDebt

us-gaap:ProceedsFromSaleAndCollectionOfLoansHeldforsale

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromStockPlans

us-gaap:ProfessionalAndContractServicesExpense

us-gaap:ProvisionForLoanLossesExpensed
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:TypeOfArrangement
us-gaap:FinancialInstrument, us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:RepaymentsOfSecuredDebt

us-gaap:ServicingAssetAtAmortizedValueAmortization1

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
us-gaap:FinancingReceivablePortfolioSegment
cof:AdvisedLineofCredit
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cof:CarryingAmountOfLiabilities

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dei:LegalEntity
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us-gaap:FinancialInstrument
cof:ContinuingInvolvementwithContinuedtobeRecognizedTransferredFinancialAssetsLiabilitiesIncurred
us-gaap:FinancialInstrument
cof:ContinuingInvolvementwithDerecognizedTransferredFinancialAssetsCashBalanceofReserveorSpreadAccounts
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cof:ContinuingInvolvementwithDerecognizedTransferredFinancialAssetsLiabilitiesIncurred

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cof:DebtSecuritiesAvailableForSaleWeightedAverageYield

cof:DeferredTaxAssetsLeaseLiabilities

cof:DeferredTaxAssetsOperatingLossCarryforwardsandTaxCreditCarryforward

cof:DeferredTaxAssetsPartnershipInvestments

cof:DeferredTaxAssetsRewardsPrograms

cof:DeferredTaxAssetsSecurityandLoanValuations

cof:DeferredTaxLiabilitiesDerivativeInstruments

cof:DeferredTaxLiabilitiesOriginalIssueDiscount

cof:DeferredTaxLiabilitiesRightofUseAssets

cof:DeferredTaxLiabilitiesSecurityandLoanValuations

cof:DeferredTaxliabilitiesPartnershipInvestments

cof:Deferredtaxliabilitiesloanfeesandexpenses
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cof:DefinedBenefitPlanExpectedFutureBenefitPaymentNext10Years
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cof:DepositswithDefinedMaturities
us-gaap:FairValueByMeasurementBasis

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cof:EquitySecuritiesFairValueDisclosure

cof:FinancingReceivablePastDueAndNotPastDueUnderPaycheckProtectionProgram
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cof:FinancingReceivablePercent90DaysPastDueandStillAccruing

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cof:FinancingReceivablePercentageofTotalLoan
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cof:FinancingReceivableTotalTermLoansBeforeAllowanceForCreditLoss
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cof:FinancingReceivableTotalTermLoansbeforeAllowanceforCreditLoss
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cof:ForeclosedPropertyandRepossessedAssetsFairValueDisclosure

cof:IntangibleAssetsGrossIncludingGoodwill
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cof:InterestPayableFairValueDisclosure
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cof:InterestReceivableFairValueDisclosure
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cof:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosureSubjectToImpairment
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cof:InvestmentsinSubsidiaries

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cof:LoansHeldforInvestmentMeasurementInput
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cof:LossSharingAgreementsFinancingReceivableAllowanceCoveredExpectedReimbursement

cof:MinimumCapitalAdequacyforSupplementaryLeverageRatio
dei:LegalEntity

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cof:NumberofConsumerClassActionCasesFiledforCybersecurityIncident
us-gaap:LitigationCase, us-gaap:StatementGeographical

cof:OffBalanceSheetLendingCommitmentCarryingValue
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cof:OperatingLossCarryforwardsNotSubjectToExpiration
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cof:ReceivablesFromSubsidiaries
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cof:RestrictedCashandCashEquivalentsFairvalueDisclosure
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cof:RetainedInterestMeasurementInput
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cof:SecuredDebtFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

cof:ServicingAssetatAmortizedCostAccumulatedAmortization
us-gaap:ShortTermDebtType
cof:ShortTermDebtMaturitiesNext12Months
dei:LegalEntity
cof:TierOneCommonCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets

cof:TierOneCommonCapitalRequiredforCapitalAdequacytoRiskWeightedAssets
dei:LegalEntity

cof:TieronecapitalunderBaselIIIstandardizedapproach
dei:LegalEntity

cof:TimeDepositMaturitiesWithContractualMaturityDatesAfterYearFive

cof:TimeDepositMaturitiesWithContractualMaturityDatesNextTwelveMonths

cof:TimeDepositMaturitiesWithContractualMaturityDatesYearFive

cof:TimeDepositMaturitiesWithContractualMaturityDatesYearFour

cof:TimeDepositMaturitiesWithContractualMaturityDatesYearThree

cof:TimeDepositMaturitiesWithContractualMaturityDatesYearTwo

cof:TimeDepositsMaturitiesWithContractualMaturityDatesDebtLongtermandShorttermCombinedAmountMaturitiesNextTwelveMonths

cof:TimeDepositsMaturitiesWithContractualMaturityDatesandDebtLongtermandShorttermCombinedAmount

cof:TimeDepositsMaturitiesWithContractualMaturityDatesandLongTermDebtMaturitiesAfterYearFive

cof:TimeDepositsMaturitiesWithContractualMaturityDatesandLongTermDebtMaturitiesYearFive

cof:TimeDepositsMaturitiesWithContractualMaturityDatesandLongTermDebtMaturitiesYearFour

cof:TimeDepositsMaturitiesWithContractualMaturityDatesandLongTermDebtMaturitiesYearThree

cof:TimeDepositsMaturitiesWithContractualMaturityDatesandLongTermDebtMaturitiesYearTwo

cof:TimeDepositsWithContractualMaturityDates
us-gaap:FairValueByFairValueHierarchyLevel
cof:UnsecuredDebtFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:InvestmentType
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us-gaap:InvestmentType
cof:VariableInterestEntitiesnonconsolidatedCarryingamountofliabilitiesincludedincertaininvestmentstructures
us-gaap:ConsolidatedEntities, us-gaap:InvestmentType
cof:VariableInterestEntityNonconsolidatedTotalAssets
us-gaap:InvestmentType, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

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us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

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us-gaap:FinancialInstrument

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us-gaap:FinancialInstrument

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us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue
us-gaap:FinancialInstrument

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us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis

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us-gaap:FinancialInstrument

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us-gaap:FairValueByMeasurementFrequency
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us-gaap:FinancialInstrument

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dei:LegalEntity

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us-gaap:FairValueByMeasurementBasis

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dei:LegalEntity

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us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleMaturityRollingAfter10YearsWeightedAverageYield

us-gaap:DebtSecuritiesAvailableForSaleMaturityRollingAfterFiveThroughTenYearsWeightedAverageYield

us-gaap:DebtSecuritiesAvailableForSaleMaturityRollingAfterOneThroughFiveYearsWeightedAverageYield

us-gaap:DebtSecuritiesAvailableForSaleMaturityRollingWithinOneYearWeightedAverageYield
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:DebtSecuritiesAvailableForSaleMeasurementInput
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us-gaap:DebtSecuritiesAvailableForSaleRestricted

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

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us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DeferredCompensationPlanAssets

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us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses

us-gaap:DeferredTaxLiabilitiesMortgageServicingRights

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityBadDebtReserveForTaxPurposesOfQualifiedLender
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us-gaap:RetirementPlanType
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us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

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us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan

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us-gaap:FinancialInstrument
us-gaap:DerecognizedAssetsSecuritizedOrAssetbackedFinancingArrangementAssetsAndAnyOtherFinancialAssetsManagedTogetherPrincipalAmountOutstanding

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us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:HedgingDesignation
us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass

us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset

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us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:DerivativeAssetLiabilityNetMeasurementInput

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us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeCollateralObligationToReturnCash

us-gaap:DerivativeCollateralObligationToReturnSecurities

us-gaap:DerivativeCollateralRightToReclaimCash

us-gaap:DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral

us-gaap:DerivativeLiabilities
us-gaap:FairValueByMeasurementFrequency

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us-gaap:DerivativeLiabilityFairValueGrossAsset

us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset

us-gaap:DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:HedgingDesignation
us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass

us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass
us-gaap:HedgingDesignation
us-gaap:HedgingDesignation, us-gaap:UnderlyingAssetClass
us-gaap:AwardType, us-gaap:PlanName
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FederalFundsPurchasedAndSecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

us-gaap:FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableModificationsRecordedInvestment
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment

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

us-gaap:FinancingReceivableNonaccrualPercentPastDue1
us-gaap:CreditScoreFico, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
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us-gaap:FinancingReceivablePortfolioSegment
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us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:CreditScoreFico, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:CreditScoreFico, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:CreditScoreFico, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:CreditScoreFico, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:CreditScoreFico, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivablePercentPastDue1
us-gaap:FinancingReceivablesPeriodPastDue

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

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

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

us-gaap:FinancingReceivableRecordedInvestmentPastDue
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:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRevolving
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRevolvingConvertedToTermLoan
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRollingAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearTwo

us-gaap:GoodwillGross
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsCurrentCarryingValue

us-gaap:HedgedAssetDiscontinuedFairValueHedgeCumulativeIncreaseDecrease
us-gaap:BalanceSheetLocation
us-gaap:BalanceSheetLocation
us-gaap:HedgedAssetFairValueHedgeCumulativeIncreaseDecrease
us-gaap:BalanceSheetLocation
us-gaap:HedgedLiabilityDiscontinuedFairValueHedgeCumulativeIncreaseDecrease
us-gaap:BalanceSheetLocation
us-gaap:HedgedLiabilityFairValueHedgeCumulativeIncreaseDecrease

us-gaap:IntangibleAssetsGrossExcludingGoodwill
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:InterestBearingDepositLiabilities

us-gaap:InterestBearingDepositsInBanks

us-gaap:InterestPayableCurrentAndNoncurrent

us-gaap:InterestReceivable
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:CounterpartyName
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:LoansAndLeasesReceivableImpairedCommitmentToLend

us-gaap:LoansHeldForSaleFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementFrequency
us-gaap:CounterpartyName
us-gaap:LoansPledgedAsCollateral
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LoansReceivableFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementFrequency

us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroup
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtWeightedAverageInterestRate
us-gaap:LongtermDebtType

us-gaap:LossContingencyEstimateOfPossibleLoss

us-gaap:NoninterestBearingDepositLiabilities

us-gaap:NotesReceivableGross
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:CreditScoreFico, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancialInstrumentPerformanceStatus, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:GeographicDistribution
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution
us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:NotesReceivableNet

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:OtherAssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:OtherBorrowings

us-gaap:OtherLiabilities
us-gaap:ConsolidatedEntities
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:PreferredStockIncludingAdditionalPaidInCapitalNetOfDiscount
us-gaap:StatementClassOfStock

us-gaap:PreferredStockValue

us-gaap:QualifiedAffordableHousingProjectInvestmentsCommitment

us-gaap:RestrictedCashAndCashEquivalents
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:RetainedInterestFairValueDisclosure

us-gaap:SecuredDebt

us-gaap:SecuritiesSoldUnderAgreementsToRepurchase

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseGross
us-gaap:FinancialInstrument
us-gaap:SecuritizedAssetsAndAnyOtherFinancialAssetsManagedTogetherPrincipalAmountOutstanding

us-gaap:SecurityOwnedAndPledgedAsCollateralFairValue

us-gaap:ServicingAssetAtAmortizedValue
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShortTermBorrowings
us-gaap:ShortTermDebtType
dei:LegalEntity
us-gaap:StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPayments

us-gaap:SupplementaryLeverageRatio
dei:LegalEntity

us-gaap:TierOneLeverageCapital
dei:LegalEntity

us-gaap:TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets
dei:LegalEntity
dei:LegalEntity
us-gaap:TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets

us-gaap:TierOneLeverageCapitalToAverageAssets
dei:LegalEntity

us-gaap:TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
dei:LegalEntity

us-gaap:TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets
dei:LegalEntity

us-gaap:TimeDepositsAtOrAboveFDICInsuranceLimit

us-gaap:TreasuryStockCommonValue

us-gaap:UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums

us-gaap:UndistributedEarningsOfForeignSubsidiaries
us-gaap:ReasonablyPossibleSignificantChangeInUnrecognizedTaxBenefitsByItem
us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnsecuredDebt
us-gaap:ConsolidatedEntities
us-gaap:Currency
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:UnusedCommitmentsToExtendCredit

us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount
us-gaap:FinancialInstrument
us-gaap:InvestmentType

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Interest Expense
Balance Sheet
Intangible Assets Net Excluding Goodwill
Assets
Operating Lease Right Of Use Asset
Current Assets
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
NonCurrent Assets
Intangible Assets Net Excluding Goodwill
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Derivative Liabilities
Noncurrent Liabilities
Long Term Debt And Capital Lease Obligations
Stockholders Equity
Preferred Stock Value
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Dividends Common Stock
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
BanksAndOrInsurance
Derivative Asset Collateral Obligation To Return Cash Offset
AssetsBanks
Property Plant And Equipment Net
LiabilitiesBanks
Short Term Borrowings

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ██████████████████████▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▁▁▁7.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.05.05.05.05.05.0NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█452.3460.1NA458.5456.7457.6NA471.8473.0471.6NA480.9488.3490.8NA489.0488.1487.9489.2505.9516.5528.0536.3546.3552.0557.2561.8567.9577.6580.3582.6591.1589.0586.0NA584.0583.0513.0NA460.0462.0460.0NA457.0456.0455.0
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█450.6458.6NA457.8456.7457.6NA469.5470.8469.4NA477.8485.1486.9NA484.9484.0482.3483.5501.1511.7523.5530.8540.6545.6550.2554.3559.9567.5571.0573.4582.3582.0581.0NA578.0578.0509.0NA456.0456.0454.0NA453.0452.0451.0
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:EmployeeStockOptionNA0.103NA0.7742.62.8NANA0.00.275NANA0.0240.107NA0.30.30.2NA2.02.12.9NA1.61.72.0NA2.32.84.6NA4.8NANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ██▇▆▂▁▄▅▅▅▅▅▅▅▂▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▅▄▄▄▄▄▄▄▄7.657.065.3900000000000015.07-2.21-3.12.26999999999999962.713.262.872.513.013.742.64-2.15999999999999972.161.961.561.471.921.71.851.62.01.522.031.761.892.071.991.461.891.891.811.41000000000000012.030.162.740.83000000000000011.782.02.241.541.781.341.41
us-gaap:EarningsPerShareDiluted ██▇▆▂▁▅▅▅▅▅▅▅▅▂▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▅▄▄▄▄▄▄▄▄7.627.035.385.06-2.21-3.12.26000000000000162.693.242.862.52.993.712.62-2.13999999999999972.141.941.541.451.91.691.841.581.981.52.01.731.862.041.961.431.861.871.791.41000000000000012.010.162.720.84999999999999961.771.972.211.51999999999999961.761.331.4
us-gaap:IncomeLossFromContinuingOperationsPerBasicShare ██▇▆▂▁▄▅▅▅▅▅▅▅▂▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▅▄▄▄▄▄▄▄▄7.65e-067.059999999999999e-065.4e-065.070000000000001e-06-2.21e-06-3.1e-062.2699999999999994e-062.7e-063.2400000000000003e-062.87e-062.5199999999999996e-063.01e-063.7599999999999996e-062.63e-06-1.9300000000000006e-062.2200000000000003e-061.98e-061.53e-061.47e-061.94e-061.7e-061.8600000000000002e-061.5800000000000001e-062.01e-061.5e-062e-061.71e-061.9699999999999998e-062.09e-061.94e-061.5e-061.91e-062.09e-061.94e-061.42e-062.05e-063.3e-072.94e-068.399999999999999e-071.89e-062.0699999999999997e-062.27e-061.5499999999999998e-061.81e-061.79e-061.59e-06
us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare ██▇▆▂▁▄▅▅▅▅▅▅▅▂▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▅▄▄▄▄▄▄▄▄7.62e-067.0300000000000005e-065.390000000000001e-065.06e-06-2.21e-06-3.1e-062.26e-062.68e-063.22e-062.8599999999999997e-062.5099999999999997e-062.99e-063.73e-062.61e-06-1.92e-062.2e-061.96e-061.51e-061.4499999999999999e-061.92e-061.69e-061.85e-061.56e-061.99e-061.48e-061.9699999999999998e-061.68e-061.94e-062.06e-061.91e-061.46e-061.8799999999999998e-062.0699999999999997e-061.92e-061.41e-062.0299999999999996e-063.3e-072.92e-068.600000000000003e-071.8799999999999998e-062.04e-062.24e-061.5299999999999993e-061.79e-061.7800000000000001e-061.5800000000000001e-06
us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets NANA1.53e-05NANANA1.3700000000000002e-07NANANA1.27e-07NANANA1.18e-07NANANA1.16e-07NANANA1.24e-07NANANA1.3230000000000001e-07NANANA1.257e-07NANANANANANANANANANANANANANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity cof:CapitalOneBankUSAN.A.NANA2.15e-05NANANA1.61e-07NANANA1.53e-07NANANA1.43e-07NANANA1.2e-07NANANA1.22e-07NANANA1.133e-07NANANA1.147e-07NANANANANANANANANANANANANANANA
 us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity cof:CapitalOneN.A.NANA1.24e-05NANANA1.34e-07NANANA1.3e-07NANANA1.22e-07NANANA1.06e-07NANANA1.18e-07NANANA1.253e-07NANANA1.2670000000000002e-07NANANANANANANANANANANANANANANA
us-gaap:CapitalToRiskWeightedAssets NANA1.77e-05NANANA1.61e-07NANANA1.51e-07NANANA1.44e-07NANANA1.43e-07NANANA1.4599999999999998e-07NANANA1.5140000000000002e-07NANANA1.469e-07NANANANANANANANANANANANANANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity cof:CapitalOneBankUSAN.A.NANA2.34e-05NANANA1.81e-07NANANA1.76e-07NANANA1.6900000000000002e-07NANANA1.48e-07NANANA1.5199999999999998e-07NANANA1.457e-07NANANA1.49e-07NANANANANANANANANANANANANANANA
 us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity cof:CapitalOneN.A.NANA1.37e-05NANANA1.45e-07NANANA1.4199999999999997e-07NANANA1.34e-07NANANA1.18e-07NANANA1.29e-07NANANA1.3569999999999998e-07NANANA1.376e-07NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cof:CommercialBankingNANANA754.0698.0729.0717.0707.0714.0676.0687.0728.0758.0723.0754.0739.0752.0724.0740.0711.0688.0655.0626.0562.0589.0575.0587.0561.0545.0508.0578.0511.0NANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cof:CommercialBankingSegment▁█717.0760.0NANA698.0729.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cof:ConsumerBankingNANANA2011.01762.01783.01814.01847.01875.01839.01848.01791.01784.01789.01815.01841.01761.01712.01664.01673.01614.01611.01616.01617.01640.01592.01644.01604.01601.01583.01663.01665.0NANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cof:ConsumerBankingSegment█▁2245.02171.0NANA1762.01783.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,cof:CreditCardSegment█▁4470.04401.0NANA4214.04613.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:CreditCardNANANA4305.04214.04613.04824.04416.04569.04540.04503.04489.04280.04415.04415.04305.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:ComprehensiveIncomeNetOfTax █▅▆▆▂▅▄▅▆▆▆▅▅▄▁▅▅▄▂▄▅▅▃▅▄▅▄▄▅▅▄▄▃▄▄▅▃▅▃▄▄▄▄▄▄▄3545.01614.02227.02258.0-616.01191.0991.01616.02455.02015.01875.01418.01712.0874.0-1275.01168.01287.0825.0-279.0885.01224.01588.0446.01369.0678.01371.01128.0893.01533.01316.0826.01070.0-148.0800.0801.01609.0190.01487.0285.0662.01108.01013.0476.0804.0916.0728.0
us-gaap:IncomeLossFromContinuingOperations ██▇▆▂▁▅▅▅▅▅▅▆▅▂▅▄▄▄▄▄▄▄▅▄▅▄▅▅▅▄▅▅▅▄▅▃▅▄▄▄▄▄▄▄▄3537.03327.02568.02406.0-917.0-1340.01178.01329.01616.01410.01264.01501.01917.01343.0-862.01137.01047.0795.0793.01016.0943.01018.0908.01118.0852.01134.0970.01125.01204.01124.0875.01130.01236.01144.0848.01188.0193.01505.0411.0865.0945.01032.0701.0818.0812.0720.0
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ██▆▇▁▁▅▅▅▅▄▅▆▅▄▅▅▄▄▅▅▅▅▅▄▅▅▅▅▅▅▅▅▅4568.04196.03064.03502.0-1460.0-1903.01448.01704.02003.01719.01243.01921.02492.01662.01308.01585.01490.01109.01135.01512.01367.01470.01334.01648.01236.01663.01420.01661.01785.01703.01352.01693.01858.01675.0NANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▅▅▄▅▁▁▃▃▃▃▂▄▄▃█▄▄▃▃▄▄▄▄▄▃▄▄▄▄▄▄▄▄▄▃▄▃▃▃▃▄▃▃▃▃▃1031.0869.0496.01096.0-543.0-563.0270.0375.0387.0309.0-21.0420.0575.0319.02170.0448.0443.0314.0342.0496.0424.0452.0426.0530.0384.0529.0450.0536.0581.0579.0477.0525.0581.0494.0370.0535.043.0353.0160.0370.0450.0354.0332.0335.0369.0244.0
us-gaap:IncomeTaxesPaid ▇▂▄▄▂▂▃▂▂▂▁▃▂▁▄▃▄▁▅▄█▂▅▄▅▂▄▃▇▁▄▅▅▂902.0111.0363.0488.073.064.0262.0183.0111.070.032.0204.0118.053.0408.0312.0433.034.0570.0479.01017.055.0615.0402.0628.087.0494.0225.0903.0-19.0471.0604.0579.067.0NANANANANANANANANANANANA
us-gaap:InterestAndFeeIncomeLoansAndLeases ▅▆▆▅▅██▇▇▇▇▇▆▆▆▆▅▅▅▄▄▃▃▂▂▂▂▂▁▁▁▂▂▂▂▃5753.05854.05954.05758.05820.06542.06682.06429.06383.06368.06358.06247.05989.06134.06133.05960.05669.05626.05587.05383.05148.05085.04961.04753.04531.04540.04613.04463.04279.04307.04398.04579.04596.04649.04727.04903.0NANANANANANANANANANA
us-gaap:InterestExpense ▁▁▂▃▄▆▇███▇▆▆▅▄▃▃▃▂▂▂▂▁▁▁▁▁▁▁▁▁▁▂▂▂▃▃▂▂▂▂▃▃▃▄▄396.0439.0518.0660.0858.01084.01204.01338.01330.01301.01228.01109.01045.0919.0791.0720.0655.0596.0562.0517.0478.0461.0423.0404.0400.0398.0389.0390.0397.0403.0416.0438.0457.0481.0587.0608.0615.0565.0519.0552.0563.0612.0651.0706.0738.0802.0
us-gaap:InterestIncomeExpenseNet ▇▇█▇▇██▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▅▅▄▅▅▄▄▄▄▅▅▅▄▅▃▂▁▂▁▁▁▁▁▁5743.05822.05873.05555.05460.06025.06066.05737.05746.05791.05820.05786.05551.05718.05813.05700.05473.05474.05447.05277.05093.05056.04961.04760.04537.04576.04656.04497.04315.04350.04423.04560.04553.04570.04528.04646.04001.03414.03182.03283.03136.03140.03023.03109.03097.03228.0
us-gaap:InterestPaidNet ▁▂▂▄▅▇▆█▇█▆▆▄▅▃508.0637.0636.0856.0931.01157.01101.01278.01163.01248.01052.01085.0860.0936.0692.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ██▇▆▂▁▅▅▅▅▅▅▆▅▂▅▄▄▄▄▄▄▄▅▄▅▄▄▅▅▄▅▅▄▄▅▃▅▄▄▄▄▄▄▄▄3536.03325.02566.02406.0-918.0-1340.01176.01333.01625.01412.01261.01502.01906.01346.0-971.01107.01036.0810.0791.01005.0942.01013.0920.01114.0863.01153.0999.01081.01194.01154.0852.01117.01117.01066.0843.01178.093.01403.0407.0813.0911.01016.0697.0803.0608.0636.0
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ██▇▆▂▁▅▅▅▅▅▅▆▅▂▅▄▄▄▄▄▄▄▅▄▅▄▅▅▅▄▅▅▅▄▅▃▅3446.03236.02466.02319.0-1009.0-1420.01041.01270.01533.01348.01173.01440.01814.01284.0-1043.01047.0948.0752.0710.0962.0871.0970.0848.01079.0830.01115.0974.01056.01177.01136.0835.01099.01100.01048.0825.01173.092.01396.0NA813.0911.01016.0NANANANA
us-gaap:PreferredStockDividendsIncomeStatementImpact ▅▅▆▆▇▄█▄▇▄▇▄▇▄▇▄▇▄▆▃▅▃▆▂▂▃▂▂▁▁▁▁▁▁60.061.068.067.090.055.097.053.080.052.080.053.080.052.080.052.080.053.075.037.065.037.068.029.029.032.021.020.013.013.013.013.013.013.0NANANANANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▁▁▁▁▁▁▁▁▁▁▁▁▁▁███▇▇▇▇▇▇▇▆▆▇▆▆▆▆▆▆▆▆▇▆1241.01001.01013.0982.0805.0937.01015.0942.0969.0894.0887.0858.0882.0804.07013.06985.06704.06535.06566.06461.06254.06220.06194.05900.05672.05647.05813.05639.05468.05370.05544.05651.05638.05551.05624.05782.05055.0NANANANANANANANANA
us-gaap:Revenues █▇██▅▇█▇▇▇▇▇▇▆▇▇▆▅▅▅▅▄▄▃▃▃▃▃▂▂▂▃▃▂▃▃▁7374.07113.07337.07381.06556.07249.07427.06959.07124.07083.07013.06962.07192.06909.07013.06985.06704.06535.06566.06461.06254.06220.06194.05900.05672.05647.05813.05639.05468.05370.05544.05651.05638.05551.05624.05782.05055.0NANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets █████▇▇▇▆▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▄▄▄▄▄▄▄▄▄▄▅▄▄▄▁▁▁▁▁423420.0425175.0421602.0421883.0421296.0396878.0390365.0378810.0373619.0373191.0372538.0362909.0363989.0362857.0365693.0361402.0350593.0348549.0357033.0345061.0339117.0330346.0334048.0313700.0310510.0306224.0308854.0300202.0298317.0290500.0297048.0289888.0296542.0300163.0312918.0301989.0296572.0294481.0206019.0200148.0199753.0199300.0197503.0NANANA
us-gaap:Liabilities █████▇▇▆▆▆▆▆▆▆▆▆▆▆▆▆▅▅▅▄▄▄▄▄▄▄▄▄▄▄▅▄▄▄▁▁▁▁▁358796.0363987.0361398.0363459.0365251.0340048.0332354.0320575.0317852.0319710.0320870.0312271.0314063.0313654.0316963.0311248.0301456.0300509.0309519.0296848.0291009.0282639.0286764.0266015.0263851.0260494.0263801.0256184.0254502.0247699.0255304.0248138.0255501.0258867.0272419.0262317.0259380.0257531.0176353.0170770.0171072.0171750.0170962.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity █████▇▇▇▆▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▄▄▄▄▄▄▄▄▄▄▅▄▄▄▁▁▁▁▁423420.0425175.0421602.0421883.0421296.0396878.0390365.0378810.0373619.0373191.0372538.0362909.0363989.0362857.0365693.0361402.0350593.0348549.0357033.0345061.0339117.0330346.0334048.0313700.0310510.0306224.0308854.0300202.0298317.0290500.0297048.0289888.0296542.0300163.0312918.0301989.0296572.0294481.0206019.0200148.0199753.0199300.0197503.0NANANA
us-gaap:StockholdersEquity █▇▇▇▇▇▇▇▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▃▃▂▂▂▂▁▁▁▁64624.061188.060204.058424.056045.056830.058011.058235.055767.053481.051668.050638.049926.049203.048730.050154.049137.048040.047514.048213.048108.047707.047284.047685.046659.045730.045053.044018.043815.042801.041744.041750.041041.041296.040499.039672.037192.036950.029666.029378.028681.027550.026541.026061.025270.024375.0
us-gaap:TierOneRiskBasedCapital NANA45583.0NANANA43015.0NANANA37431.0NANANA34396.0NANANA33162.0NANANA32838.0NANANA31355.0NANANA28230.0NANANANANANANANANANANANANANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity cof:CapitalOneBankUSAN.A.NANA19924.0NANANA17883.0NANANA16378.0NANANA14791.0NANANA11568.0NANANA10644.0NANANA8503.0NANANA8103.0NANANANANANANANANANANANANANANA
 us-gaap:TierOneRiskBasedCapital dei:LegalEntity cof:CapitalOneN.A.NANA26671.0NANANA28445.0NANANA25637.0NANANA23771.0NANANA20670.0NANANA21765.0NANANA21136.0NANANA19930.0NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▅▇▆▆█▄▂▂▂▃▂▂▂▂▂▁▁▁▂▁35088.052274.040771.045001.056558.025300.013749.017537.015821.019438.013489.011628.013296.014317.014352.08788.07015.09801.012493.09381.0NANA9040.0NANANA7476.0NANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA8993.0NANANA9188.0NANANA8727.0NANANA8264.0NANANA7487.0NANANA6999.0NANANA6882.0NANANA7183.0NANANA6493.0NANANA5227.0NANANA5004.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType cof:FurnitureAndEquipmentNANA1973.0NANANA2218.0NANANA2018.0NANANA1901.0NANANA1834.0NANANA1735.0NANANA1730.0NANANA1874.0NANANANANANANANANANANA1315.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingAndBuildingImprovementsNANA3742.0NANANA3903.0NANANA3994.0NANANA3302.0NANANA2958.0NANANA2674.0NANANA2577.0NANANA2388.0NANANANANANANANANANANA1948.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA768.0NANANA689.0NANANA482.0NANANA902.0NANANA591.0NANANA514.0NANANA467.0NANANA720.0NANANANANANANANANANANA258.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandNANA366.0NANANA382.0NANANA386.0NANANA406.0NANANA423.0NANANA458.0NANANA552.0NANANA569.0NANANANANANANANANANANA562.0NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareAndSoftwareDevelopmentCostsNANA2144.0NANANA1996.0NANANA1847.0NANANA1753.0NANANA1681.0NANANA1618.0NANANA1556.0NANANA1632.0NANANANANANANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA4706.0NANANA4810.0NANANA4536.0NANANA4231.0NANANA3812.0NANANA3415.0NANANA3197.0NANANA3344.0NANANA2906.0NANANA2479.0NANANA-2255.0NANANA
us-gaap:AmortizationOfIntangibleAssets ▁▁▁▁▁▂▂▂▂▂▂▂▂▂▃▃▃▃▄▄▄▄▅▅▅▅▅▆▆▆▇▇▇▇██▆▃5.06.08.014.016.022.028.025.029.030.043.044.043.044.061.061.061.062.0101.089.095.0101.0103.0106.0111.0110.0123.0130.0136.0143.0166.0161.0167.0177.0191.0199.0157.062.0NA55.057.0NANANANANA
us-gaap:PropertyPlantAndEquipmentNet ▇███████▇▇▇▇▇▇▇▆▆▅▅▅▄▄▅▅▅▅▅▅▅▆▆▅▅▅▅▄▄▂▁▁▁▁▁4227.04277.04287.04333.04324.04336.04378.04311.04243.04205.04191.04149.04095.04055.04033.03955.03825.03727.03675.03561.03556.03542.03584.03629.03602.03684.03685.03752.03764.03807.03839.03792.03766.03736.03587.03519.03556.03062.02748.02785.02754.02739.02749.0NANANA
us-gaap:Goodwill ████████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▄▄▄▄▃▄▄▄▃▃▃▃▃▃▁▁▁▁▁▁14654.014654.014653.014648.014645.014645.014653.014624.014545.014546.014544.014513.014531.014536.014533.014532.014524.014521.014519.014493.014495.014492.014480.013983.013984.013978.013978.013970.013977.013974.013978.013906.013900.013900.013904.013901.013864.013595.013592.013593.013596.013597.013591.0NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▁▁▁▁▁▁▁▂▂▂▂▂▂▃▃▃▃▄▄▅▅▅▆▆▆▇▇█80.084.090.099.0140.0156.0174.0181.0194.0223.0254.0289.0334.0378.0421.0481.0542.0603.0665.0761.0848.0937.01041.01005.01110.01212.01316.01440.0NANA1849.0NANANANANANANANANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA82.0NANANANANANANANANANANANANANANANANANANANANANANA1312.0NA1570.01706.01845.01975.02135.02304.02571.02762.02961.0907.0610.0660.0721.0759.0733.0NANANA
us-gaap:IntangibleAssetsNetIncludingGoodwill ▁▁▁▁▁▁▂▁▁▁▁▁▂▂▂▃▃▃▄▄▅▅▆▃▃▄▅▅▆▇█14734.014738.014743.014747.014785.014801.014827.014805.014739.014769.014798.014802.014865.014914.014954.015013.015066.015124.015184.015254.015343.015429.015521.014988.015094.015190.015294.015410.015547.015680.015827.0NANANA16475.016663.016825.0NA14202.0NANANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA3326.0NANANA1720.0NANANA2145.0NANANA2864.0NANANA4310.0NANANA3662.0NANANA3332.0NANANA3666.0NANANA2938.0NANANA2316.0NANANA2715.0NANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA1316.0NANANA1433.01448.01490.01547.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType cof:FixedUnsecuredSeniorDebt,us-gaap:SeniorNotes▄▄▅▆▆█▇▇▇▇▇▇█▇▇▅▅▄▃▃▂▂▂▃▂▂▁▁18883.019478.021045.021685.021701.024610.023302.023457.024076.023027.023290.023531.024824.022920.022776.020815.021174.019628.017546.018303.016924.016837.016559.017539.016097.016624.015174.015055.0NANA9612.0NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType cof:FixedUnsecuredSubordinatedDebt,us-gaap:SubordinatedDebt██████▇▇██▇▇▇▇▇▇▇▇▇█▆▆▆▁▁▁▁▁4636.04630.04728.04755.04772.04743.04475.04530.04752.04625.04543.04413.04450.04486.04533.04558.04556.04528.04532.04700.04249.04200.04080.02654.02610.02655.02630.02599.0NANA2670.0NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType cof:FloatingUnsecuredSeniorDebt,us-gaap:SeniorNotes▃▃▃▄▄▆▆▆▆▆▆▇███▇▆▅▃▂▁▁▂▃▂▂▁▁1359.01359.01609.02008.02008.02696.02695.02695.02994.02993.02993.03347.03646.03645.03446.03047.02748.02249.01353.0998.0699.0699.01198.01580.01280.01280.0880.0880.0NANA852.0NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType cof:UnsecuredSeniorDebt,us-gaap:SeniorNotes▃▄▅▅▅▇▇▇▇▇▇▇█▇▇▅▅▄▃▃▂▂▂▃▂▂▁▁20242.020837.022654.023693.023709.027306.025997.026152.027070.026020.026283.026878.028470.026565.026222.023862.023922.021877.018899.019301.017623.017536.017757.019119.017377.017904.016054.015935.0NANA10464.0NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:LongtermDebtType cof:FHLBAdvanceCapitalLeaseObligationandGPMH▁▁▁▁▁▁▁▁▁▁▁▁▁▁█59.070.075.079.085.092.0103.093.093.0105.0370.0631.0188.0321.08940.0NANANA17211.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:LongtermDebtType cof:OtherborrowingsNANA75.0NANANA7103.0NANANA9420.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:LongtermDebtType cof:SeniorAndSubordinatedNotes▄▄▅▆▆█▇▇▇▇▇▇█▇▇▆▆▅▃▄▃▃▃▃▂▂▁▁24878.025467.027382.028448.028481.032049.030472.030682.031822.030645.030826.031291.032920.031051.030755.028420.028478.026405.023431.024001.021872.021736.021837.021773.019987.020559.018684.018534.0NANA13134.0NANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:LongtermDebtType us-gaap:CapitalLeaseObligations▁▃▄▄▅▆█59.070.075.079.085.092.0103.0NANANANANANANANA48.046.032.032.033.033.033.033.024.0NANA0.0NANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:LongtermDebtType us-gaap:SecuredDebt▁▂▂▃▅▆▆▇▆▇▇▇█▇█10561.012071.012414.013566.015761.017141.017808.018910.016959.019273.018307.018649.019649.018665.020010.0NANA18528.018826.018411.016130.014913.016166.015656.013785.012717.011624.010508.0NANA10289.0NANANANANANANANANANANANANANANA
us-gaap:DebtAndCapitalLeaseObligations ▁▂▂▃▃▇▇▅▅▅█▆▆▅██▅▅███▅█▃36343.038450.040539.042795.044900.055681.055697.050149.049233.050358.058905.052205.053310.050693.060281.059458.049954.048439.060460.059820.059181.050497.059115.042778.0NANA48457.0NA39114.030118.040654.031845.036231.037492.049910.038377.035874.032885.039561.034315.037735.039797.041796.0NANANA
us-gaap:LongTermDebtAndCapitalLeaseObligations ▁▂▂▃▄▅▅▅▅▅▅▅▆▅██▅▄███▅█▃35498.037608.039871.042093.044327.049282.048383.049685.048874.050023.049503.050571.052757.050037.059705.058691.048996.047393.059468.058741.058182.049580.058134.041757.0NANA31377.0NANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA272.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA250.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA216.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA180.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA721.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity █▇▇▇▇▇▇▇▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▃▃▂▂▂▂▁▁▁▁64624.061188.060204.058424.056045.056830.058011.058235.055767.053481.051668.050638.049926.049203.048730.050154.049137.048040.047514.048213.048108.047707.047284.047685.046659.045730.045053.044018.043815.042801.041744.041750.041041.041296.040499.039672.037192.036950.029666.029378.028681.027550.026541.026061.025270.024375.0
us-gaap:CommonStockValue ██████████████████████▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▁▁▁7.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.05.05.05.05.05.0NANANA
us-gaap:AdditionalPaidInCapital █▆▆▇▆▆▆▇▅▅▅▅▅▅▅▅▅▄▄▄▃▃▃▃▃▂▂▁35472.033671.033480.033793.033556.033450.032980.033826.032262.032160.032040.031978.031868.031779.031656.031526.031413.031326.031157.030439.029786.029709.029655.029594.029063.027939.027869.027272.0NANA26526.0NANANANANANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▇▆▆▆▇▇▆▆▆▆▆▅▅▅▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁46461.043167.040088.037653.035361.036552.040340.039476.038386.037030.035875.034883.033626.031996.030700.031946.031086.030326.029766.029245.028479.027808.027045.026407.025540.024925.023973.023162.022270.021259.020404.019731.018804.017876.016853.016054.014905.014841.013462.013091.012287.011399.010406.0NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▅▇███▅▄▃▂▂▁▁▁▂▂▂▂▂▃▄▃▃▃▃▃▃▃▃▂▂▂▂▄▄▄▄▄▃▄▄▄▄1792.01783.03494.03833.03981.03679.01156.0453.0170.0-660.0-1263.0-1877.0-1793.0-1599.0-926.0-622.0-683.0-934.0-949.0121.0241.0-41.0-616.0-142.0-397.0-212.0-430.0-559.0-371.0-710.0-872.0-839.0-792.0473.0739.0781.0350.0253.0169.0291.0442.0245.0248.0NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues 1641.0NANA121.0NA1209.0NA1463.0NANANANANANANANANANA483.0NANANA0.0484.0NANANANA24.027.017.020.021.023.016.017.012.03188.012.010.010.08.08.07.08.07.0
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▁█84.0111.0NA52.048.029.0NA46.055.065.024.044.042.058.068.047.032.061.072.050.044.034.033.01.060.034.028.022.038.040.042.038.033.030.031.019.040.021.030.019.018.026.020.021.026.029.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▄▆▅▅▆▅▅▅▆▅▅▅▄▅▅▅▅▄▅▅▅▄▆▅▄▄▅▄▅▁█▅▅▄▆▄▄▄▄▅▄▄▅▅▄4058.01636.04627.02857.03806.05409.04120.03412.04226.04881.03940.03351.04080.01607.04091.03068.03860.03163.01995.03293.02466.04102.01122.04657.02355.01993.01603.02781.01761.03159.0-5280.09632.02838.02794.0927.04981.01686.01466.01539.01555.02492.01869.0122.03209.02787.02024.0
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▆▄▃▅▅▂▄▄▅▃▄▄▅▄▄▄▅▃▄▄▅▂▄▄▅▄▄▄▅▅▅▅▅▄▄▁█▄▅▄▅▅▅▅▆-14963.07272.0-5924.0-13976.04018.01041.0-17112.0-5761.0-5138.05013.0-9747.0-2256.0-4297.0682.0-3796.0-7450.0-6373.02078.0-10453.0-6259.0-8190.0-728.0-20166.0-5089.0-7542.03071.0-7904.0-4220.0-7253.03386.0789.0-797.0-1413.05142.0-6846.0-7641.0-26635.023135.0-7214.0-372.0-2321.0-456.0-1487.0-522.0331.06141.0
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▄▃▃█▄▅▄▃▃▅▃▃▃▄▅▃▂▅▄▅▂▇▃▄▃▅▄▅▂▄▂▃▁▆▄▃▃▄▃▃▄▄▃▂▂-6281.02595.0-2933.0-438.023434.05101.09204.04065.0-2705.0-3945.07668.0-2763.0-804.0-2324.05269.06155.0-273.0-7933.09340.04911.07638.0-6162.020230.0113.03452.0-3415.07395.0855.06042.0-6654.05064.0-7770.0-3518.0-12248.011008.02650.0272.0217.05155.0-1468.0-1499.01309.01672.0-2944.0-5417.0-9352.0
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▁▅▃▂█▅▃▄▃▄▄▃▃▃▄▄▃▃▄-17186.011503.0-4230.0-11557.031258.011551.0-3788.01716.0-3617.05949.01861.0-1668.0-1021.0-35.05564.01773.0-2786.0-2692.03112.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▄▄▃▄▁▁▃▃▃▃▅▃▃▃█▃▃▃▃▃▃▃229.0345.0-207.0154.0-826.0-748.0-224.0-57.0-76.061.0565.054.055.040.01755.0-86.0-98.0-137.0-65.0-244.0-238.0-139.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▄▆▅▅▆▅▅▅▆▅▅▅▄▅▅▅▅▄▅▅▅▄▆▅▄▄▅▄▅▁█▅▅▄▆▄▄▄▄▅▄▄▅▅▄4058.01636.04627.02857.03806.05409.04120.03412.04226.04881.03940.03351.04080.01607.04091.03068.03860.03163.01995.03293.02466.04102.01122.04657.02355.01993.01603.02781.01761.03159.0-5280.09632.02838.02794.0927.04981.01686.01466.01539.01555.02492.01869.0122.03209.02787.02024.0
us-gaap:NetIncomeLoss ██▇▆▂▁▅▅▅▅▅▅▆▅▂▅▄▄▄▄▄▄▄▅▄▅▄▄▅▅▄▅▅▄▄▅▃▅▄▄▄▄▄▄▄▄3536.03325.02566.02406.0-918.0-1340.01176.01333.01625.01412.01261.01502.01906.01346.0-971.01107.01036.0810.0791.01005.0942.01013.0920.01114.0863.01153.0999.01081.01194.01154.0852.01117.01117.01066.0843.01178.093.01403.0407.0813.0911.01016.0697.0803.0608.0636.0
us-gaap:ShareBasedCompensation ▆█▅▄▄▃▅▄▄▅▂▄▄▅▆▄▃▆▆▅▄▄▃▁▅▄▃▃▄▆▅▅▄▄▄▃▄▅▄▂▄▅▃▃▃▄87.0119.075.054.050.024.064.046.057.072.017.045.041.067.080.053.034.077.089.060.046.044.040.0-3.074.050.038.030.053.084.068.060.058.054.046.037.053.063.054.018.042.075.032.030.040.047.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▆▄▃▅▅▂▄▄▅▃▄▄▅▄▄▄▅▃▄▄▅▂▄▄▅▄▄▄▅▅▅▅▅▄▄▁█▄▅▄▅▅▅▅▆-14963.07272.0-5924.0-13976.04018.01041.0-17112.0-5761.0-5138.05013.0-9747.0-2256.0-4297.0682.0-3796.0-7450.0-6373.02078.0-10453.0-6259.0-8190.0-728.0-20166.0-5089.0-7542.03071.0-7904.0-4220.0-7253.03386.0789.0-797.0-1413.05142.0-6846.0-7641.0-26635.023135.0-7214.0-372.0-2321.0-456.0-1487.0-522.0331.06141.0
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▄▅▄▅▅▄▇▆▆▅▆▆▆▆▇█▇▆▇▅▅▃▃▅▂▄▂▄▃▃▅▅▆▆▅▂▃▄▁▃▂▂▃▂▂▂163.0178.0167.0201.0188.0154.0256.0235.0213.0183.0205.0240.0224.0205.0242.0293.0261.0222.0271.0184.0190.0134.0121.0182.076.0153.097.0155.0121.0129.0196.0172.0214.0236.0201.097.0106.0156.046.0110.092.067.0115.075.076.074.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▄▃▃█▄▅▄▃▃▅▃▃▃▄▅▃▂▅▄▅▂▇▃▄▃▅▄▅▂▄▂▃▁▆▄▃▃▄▃▃▄▄▃▂▂-6281.02595.0-2933.0-438.023434.05101.09204.04065.0-2705.0-3945.07668.0-2763.0-804.0-2324.05269.06155.0-273.0-7933.09340.04911.07638.0-6162.020230.0113.03452.0-3415.07395.0855.06042.0-6654.05064.0-7770.0-3518.0-12248.011008.02650.0272.0217.05155.0-1468.0-1499.01309.01672.0-2944.0-5417.0-9352.0
us-gaap:PaymentsOfDividendsCommonStock ▇▇▂▂▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█████▆▆▆▆▆▆▇▆▁▁▁▁▁▁▁▁▁▁▁▁▁181.0184.045.047.0183.0185.0184.0190.0188.0191.0189.0191.0196.0197.0195.0195.0195.0195.0194.0202.0205.0211.0214.0217.0218.0167.0166.0169.0170.0174.0172.0177.0176.030.029.029.029.024.022.023.023.023.022.023.023.023.0
us-gaap:PaymentsForRepurchaseOfCommonStock █▃▁▁▁▃▅▃▁▁▄▃▄▂▁▁▁▂▅▆▄▅▄▄▄▃▃▃▅▁▄▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁1668.0575.03.02.02.0386.0945.0469.02.065.0638.0571.0802.0273.04.017.01.0218.0868.01194.0629.0970.0626.0627.0625.0563.0502.0563.0941.039.0746.0258.01.028.00.01.00.042.01.02.01.038.00.02.02.018.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value7000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.05000000.05000000.05000000.05000000.05000000.05000000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value452460458456457471473471480488490489488487489505516528536546552557561567577580582591589586584583513460462460457456455
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value450458457456457469470469477485486484484482483501511523530540545550554559567571573582582581578578509456456454453452451
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EmployeeStockOption


Antidilutive
Period End2021-03-312020-09-302020-06-302020-03-312019-06-302019-03-312018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-30
Value0.1030.7742.62.80.00.2750.0240.1070.30.30.22.02.12.91.61.72.02.32.84.64.8
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.657.065.395.07-2.21-3.12.272.713.262.872.513.013.742.64-2.162.161.961.561.471.921.71.851.62.01.522.031.761.892.071.991.461.891.891.811.412.030.162.740.831.782.02.241.541.781.341.41
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.627.035.385.06-2.21-3.12.262.693.242.862.52.993.712.62-2.142.141.941.541.451.91.691.841.581.981.52.01.731.862.041.961.431.861.871.791.412.010.162.720.851.771.972.211.521.761.331.4
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare


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
Value7.657.065.45.07-2.21-3.12.272.73.242.872.523.013.762.63-1.932.221.981.531.471.941.71.861.582.011.52.01.711.972.091.941.51.912.091.941.422.050.332.940.841.892.072.271.551.811.791.59
Percentage of IncomeLossFromContinuingOperationsPerBasicShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Diluted Share

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare


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
Value7.627.035.395.06-2.21-3.12.262.683.222.862.512.993.732.61-1.922.21.961.511.451.921.691.851.561.991.481.971.681.942.061.911.461.882.071.921.412.030.332.920.861.882.042.241.531.791.781.58
Percentage of IncomeLossFromContinuingOperationsPerDilutedShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Tier One Risk Based Capital To Risk Weighted Assets

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value15.30.1370.1270.1180.1160.1240.13230.1257
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TierOneRiskBasedCapitalToRiskWeightedAssets dei:LegalEntity

cof:CapitalOneBankUSAN.A.


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value21.50.1610.1530.1430.120.1220.11330.1147
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets140.5117.5120.5121.2103.498.485.691.2

cof:CapitalOneN.A.


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value12.40.1340.130.1220.1060.1180.12530.1267
Percentage of TierOneRiskBasedCapitalToRiskWeightedAssets81.097.8102.4103.491.495.294.7100.8

Capital To Risk Weighted Assets

us-gaap:CapitalToRiskWeightedAssets

us-gaap:CapitalToRiskWeightedAssets


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value17.70.1610.1510.1440.1430.1460.15140.1469
Percentage of CapitalToRiskWeightedAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalToRiskWeightedAssets dei:LegalEntity

cof:CapitalOneBankUSAN.A.


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value23.40.1810.1760.1690.1480.1520.14570.149
Percentage of CapitalToRiskWeightedAssets132.2112.4116.6117.4103.5104.196.2101.4

cof:CapitalOneN.A.


Capital
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value13.70.1450.1420.1340.1180.1290.13570.1376
Percentage of CapitalToRiskWeightedAssets77.490.194.093.182.588.489.693.7

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3545161422272258-616.01191991161624552015187514181712874-1275.011681287825-279.088512241588446136967813711128893153313168261070-148.08008011609190148728566211081013476804916728
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating57.725.834.836.3-9.716.813.622.834.728.426.620.626.013.2-19.318.221.013.6-4.615.322.028.88.326.513.727.622.418.332.527.717.121.4-3.015.815.730.64.137.47.717.330.027.013.021.123.918.1

us-gaap:ComprehensiveIncomeNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Comprehensive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value9.0-1711.0-148.03022531283830603614-84.0-194.0-472.0-304.06125115-1070.0-120.0282575-474.0255-185.0218129-188.0339162
Percentage of ComprehensiveIncomeNetOfTax0.3-106.0-6.6-49.0212.517.533.829.932.7-5.9-11.3-54.023.85.219.51.8383.5-13.623.036.2-106.318.6-27.315.911.4-21.122.112.3
Percentage of InterestAndDividendIncomeOperating0.1-27.3-2.44.835.64.011.78.58.7-1.2-2.9-7.1-4.61.04.10.2-17.8-2.15.110.4-8.84.9-3.74.42.6-3.87.23.4
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Comprehensive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value353633252406-918.0-1340.01333162514121261150219061346-971.0110710368107911005942101392011148631153999108111941154
Percentage of ComprehensiveIncomeNetOfTax99.7206.0106.6149.0-112.582.566.270.167.3105.9111.3154.076.294.880.598.2-283.5113.677.063.8206.381.4127.384.188.6121.177.987.7
Percentage of InterestAndDividendIncomeOperating57.653.138.7-14.5-18.818.823.019.917.921.828.920.3-14.717.216.913.313.217.316.918.417.121.617.523.219.822.125.324.3
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations

us-gaap:IncomeLossFromContinuingOperations

us-gaap:IncomeLossFromContinuingOperations


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
Value3537332725682406-917.0-1340.011781329161614101264150119171343-862.0113710477957931016943101890811188521134970112512041124875113012361144848118819315054118659451032701818812720
Percentage of IncomeLossFromContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating57.653.140.238.7-14.5-18.816.218.822.819.917.921.829.120.2-13.117.717.113.113.217.516.918.516.921.617.322.819.223.025.623.618.122.624.722.616.622.64.237.811.122.625.527.519.121.421.217.9

us-gaap:IncomeLossFromContinuingOperations us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-120.0-96.075-113.0-152.011427-64.0-22.045203-225.0213-46.0-1774.0707263-18.02664934538-74.045403031-11.0-115.0-83.0
Percentage of IncomeLossFromContinuingOperations-3.4-2.92.9-4.716.6-8.52.3-4.8-1.43.216.1-15.011.1-3.4205.86.26.97.9-2.32.66.89.15.03.4-8.74.04.12.72.6-1.0-13.1-7.3
Percentage of InterestAndDividendIncomeOperating-2.0-1.51.2-1.8-2.41.60.4-0.9-0.30.62.9-3.33.2-0.7-26.91.11.21.0-0.30.41.11.70.80.7-1.50.90.80.60.7-0.2-2.4-1.7
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperations us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cof:CommercialBanking


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value309-118.0-411.016415415714618720424225613817914621317919113867106137172155169182171137195162
Percentage of IncomeLossFromContinuingOperations12.812.930.713.911.69.710.414.813.612.619.1-16.015.713.926.822.618.814.66.611.712.320.213.717.416.214.212.222.314.3
Percentage of InterestAndDividendIncomeOperating5.0-1.9-5.82.32.22.22.12.73.03.73.92.12.82.43.53.03.32.51.22.02.73.53.13.33.73.62.94.03.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:CommercialBankingSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value396416-118.0-411.0
Percentage of IncomeLossFromContinuingOperations11.212.512.930.7
Percentage of InterestAndDividendIncomeOperating6.56.6-1.9-5.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBanking


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value796-114.0-52.0283505543468353482539426250316276248120244257249204273291266242289334330279345
Percentage of IncomeLossFromContinuingOperations33.112.43.924.038.033.633.227.932.128.131.7-29.027.826.431.215.124.027.324.522.524.434.223.524.925.727.729.431.930.5
Percentage of InterestAndDividendIncomeOperating12.8-1.8-0.73.97.17.76.65.07.08.26.43.84.94.54.12.04.24.64.53.85.35.95.34.85.97.16.95.86.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBankingSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value1091902-114.0-52.0
Percentage of IncomeLossFromContinuingOperations30.827.112.43.9
Percentage of InterestAndDividendIncomeOperating17.814.4-1.8-0.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:CreditCardSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value21702105-533.0-991.0
Percentage of IncomeLossFromContinuingOperations61.463.358.174.0
Percentage of InterestAndDividendIncomeOperating35.333.6-8.4-13.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CreditCardSegment0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:CreditCard


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1414-533.0-991.07047349387515211040923707524572
Percentage of IncomeLossFromContinuingOperations58.858.174.059.855.258.053.341.269.348.152.6-60.850.3
Percentage of InterestAndDividendIncomeOperating22.8-8.4-13.99.710.413.310.67.415.114.010.77.98.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:CreditCard0.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4568419630643502-1460.0-1903.01448170420031719124319212492166213081585149011091135151213671470133416481236166314201661178517031352169318581675
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating74.467.047.956.3-23.1-26.819.924.128.324.217.627.937.825.019.824.724.318.318.926.124.526.624.831.925.033.428.134.037.935.827.933.937.133.2

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-221.0-286.0-201.0203-457.01.0-51.0-124.0-131.0-61.0-142.0-328.0269-148.0-124.0-72.0-29.0-55.0-143.0-45.0-14.028-6.0-40.0-217.0-33.0-13.0-29.0-33.0-49.0-174.0-165.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-4.8-6.8-6.65.831.3-0.1-3.5-7.3-6.5-3.5-11.4-17.110.8-8.9-9.5-4.5-1.9-5.0-12.6-3.0-1.01.9-0.4-2.4-17.6-2.0-0.9-1.7-1.8-2.9-12.9-9.7
Percentage of InterestAndDividendIncomeOperating-3.6-4.6-3.13.3-7.20.0-0.7-1.8-1.9-0.9-2.0-4.84.1-2.2-1.9-1.1-0.5-0.9-2.4-0.8-0.30.5-0.1-0.8-4.4-0.7-0.3-0.6-0.7-1.0-3.6-3.3
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cof:CommercialBanking


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value404-154.0-539.0214200205190244266315334217282231335281301217105166215270243262284266213303252
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest11.510.528.314.811.710.211.119.613.812.620.116.617.815.530.224.819.915.97.112.413.021.814.618.517.114.912.522.414.9
Percentage of InterestAndDividendIncomeOperating6.5-2.4-7.62.92.82.92.73.53.94.85.03.34.43.85.54.75.23.91.93.14.25.54.95.25.85.64.56.35.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:CommercialBankingSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value519544-154.0-539.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest11.413.010.528.3
Percentage of InterestAndDividendIncomeOperating8.58.7-2.4-7.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBanking


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1043-150.0-68.0369659708610460628703556394497434391190383404391319428457416377450520513433536
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest29.810.33.625.538.735.335.537.032.728.233.530.131.429.135.316.725.329.626.623.926.037.025.026.527.129.130.132.031.7
Percentage of InterestAndDividendIncomeOperating16.8-2.4-1.05.19.310.08.66.59.110.78.46.07.77.16.43.26.67.37.15.98.39.38.47.59.211.010.88.910.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBankingSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value14281180-150.0-68.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest31.328.110.33.6
Percentage of InterestAndDividendIncomeOperating23.318.8-2.4-1.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:CreditCardSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value28422758-699.0-1297.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest62.265.747.968.2
Percentage of InterestAndDividendIncomeOperating46.344.1-11.1-18.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CreditCardSegment0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:CreditCard


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1852-699.0-1297.0916969122198068113551205920821878
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest52.947.968.263.356.961.057.054.870.548.455.462.855.4
Percentage of InterestAndDividendIncomeOperating29.8-11.1-18.212.613.717.313.89.719.718.313.912.413.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:CreditCard0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ForeignExchangeContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value321320142106-156.0424-116.038-172.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest7.07.64.63.010.7-22.3-8.02.2-8.6
Percentage of InterestAndDividendIncomeOperating5.25.12.21.7-2.56.0-1.60.5-2.4
Percentage of InterestAndDividendIncomeOperating us-gaap:ForeignExchangeContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, cof:AccumulatedOtherComprehensiveIncomeLossOtherComponent


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.01.00.02.00.00.01.03.00.01.01.01.01.01.02.03.02.02.02.02.00.0-2.01.02.01.01.01.02.07.01.0-12.00.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest0.00.00.00.1-0.0-0.00.10.20.00.10.10.10.00.10.20.20.10.20.20.10.0-0.10.10.10.10.10.10.10.40.1-0.90.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.00.00.00.00.00.00.00.10.0-0.20.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome cof:AccumulatedOtherComprehensiveIncomeLossOtherComponent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value10318694961096-543.0-563.0270375387309-21.0420575319217044844331434249642445242653038452945053658157947752558149437053543353160370450354332335369244
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating16.813.97.817.6-8.6-7.93.75.35.54.4-0.36.18.74.832.97.07.25.25.78.67.68.27.910.37.810.68.911.012.312.29.910.511.69.87.210.20.98.94.39.612.29.49.08.89.66.1

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-101.0-190.0-276.0316-305.0-113.0-78.0-60.0-109.0-106.0-345.0-103.056-102.01650-142.0-101.0-118.0-125.0-71.0-78.0-65.0-51.0-78.0-143.0-78.0-53.0-59.0-64.0-38.0-59.0-82.0
Percentage of IncomeTaxExpenseBenefit-9.8-21.9-55.628.856.220.1-28.9-16.0-28.2-34.31642.9-24.59.7-32.076.0-31.7-22.8-37.6-36.5-14.3-18.4-14.4-12.0-14.7-37.2-14.7-11.8-11.0-11.0-6.6-12.4-15.6
Percentage of InterestAndDividendIncomeOperating-1.6-3.0-4.35.1-4.8-1.6-1.1-0.8-1.5-1.5-4.9-1.50.8-1.525.0-2.2-1.6-1.9-2.1-1.2-1.4-1.2-0.9-1.5-2.9-1.6-1.1-1.2-1.4-0.8-1.2-1.6
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cof:CommercialBanking


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value95-36.0-128.05046484457627378791038512210211079386078988893102957610890
Percentage of IncomeTaxExpenseBenefit8.76.622.718.512.312.414.2-271.414.812.724.53.623.019.238.929.822.218.68.414.114.725.516.620.719.016.413.122.617.1
Percentage of InterestAndDividendIncomeOperating1.5-0.6-1.80.70.70.70.60.80.91.11.21.21.61.42.01.71.91.40.71.11.52.01.81.82.12.01.62.21.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:CommercialBankingSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value123128-36.0-128.0
Percentage of IncomeTaxExpenseBenefit11.914.76.622.7
Percentage of InterestAndDividendIncomeOperating2.02.0-0.6-1.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBanking


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value247-36.0-16.08615416514210714616413014418115814370139147142115155166150135161186183154191
Percentage of IncomeTaxExpenseBenefit22.56.62.831.941.142.646.0-509.534.828.540.86.640.435.745.520.528.034.731.427.029.243.228.430.030.032.031.632.336.4
Percentage of InterestAndDividendIncomeOperating4.0-0.6-0.21.22.22.32.01.52.12.52.02.22.82.62.41.22.42.62.62.13.03.43.02.73.33.93.93.23.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBankingSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value337278-36.0-16.0
Percentage of IncomeTaxExpenseBenefit32.732.06.62.8
Percentage of InterestAndDividendIncomeOperating5.54.4-0.6-0.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:CreditCardSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value672653-166.0-306.0
Percentage of IncomeTaxExpenseBenefit65.275.130.654.4
Percentage of InterestAndDividendIncomeOperating10.910.4-2.6-4.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CreditCardSegment0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:CreditCard


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value438-166.0-306.0212235283229160315282213297306
Percentage of IncomeTaxExpenseBenefit40.030.654.478.562.773.174.1-761.975.049.066.813.768.3
Percentage of InterestAndDividendIncomeOperating7.0-2.6-4.32.93.34.03.22.34.64.33.24.54.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:CreditCard0.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:ForeignExchangeContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value77773326-39.0103-26.09.0-41.0
Percentage of IncomeTaxExpenseBenefit7.58.96.72.47.2-18.3-9.62.4-10.6
Percentage of InterestAndDividendIncomeOperating1.31.20.50.4-0.61.4-0.40.1-0.6
Percentage of InterestAndDividendIncomeOperating us-gaap:ForeignExchangeContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.0

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

us-gaap:AvailableforsaleSecurities, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Income
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1.00.06.00.00.0-5.02.03.06.0-5.0-47.00.02.00.026
Percentage of IncomeTaxExpenseBenefit0.10.00.5-0.0-0.0-1.90.50.81.923.8-11.20.00.60.05.8
Percentage of InterestAndDividendIncomeOperating0.00.00.10.00.0-0.10.00.00.1-0.1-0.70.00.00.00.4
Percentage of InterestAndDividendIncomeOperating us-gaap:AvailableforsaleSecurities us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:HeldtomaturitySecurities, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.00.00.00.0-3.0-2.0-2.0-2.0-3.0-2.0-2.0-6.0-12.0-14.0
Percentage of IncomeTaxExpenseBenefit0.00.0-0.0-0.0-1.1-0.5-0.5-0.614.3-0.5-0.3-1.9-0.6-3.1
Percentage of InterestAndDividendIncomeOperating0.00.00.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.2-0.2
Percentage of InterestAndDividendIncomeOperating us-gaap:HeldtomaturitySecurities us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, cof:AccumulatedOtherComprehensiveIncomeLossOtherComponent


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.00.00.00.00.00.00.01.00.00.00.01.00.00.00.02.01.00.01.00.00.00.01.0-1.01.00.0-1.04.03.00.0-1.00.0
Percentage of IncomeTaxExpenseBenefit0.00.00.00.0-0.0-0.00.00.30.00.0-0.00.20.00.00.00.40.20.00.30.00.00.00.2-0.20.30.0-0.20.70.50.0-0.20.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.00.00.0-0.00.10.10.0-0.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome cof:AccumulatedOtherComprehensiveIncomeLossOtherComponent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value90211136348873642621831117032204118534083124333457047910175561540262887494225903-19.047160457967
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating14.71.85.77.91.20.93.62.61.61.00.53.01.80.86.24.97.10.69.58.318.31.011.47.812.71.79.84.619.2-0.49.712.111.61.3

Interest And Fee Income Loans And Leases

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestAndFeeIncomeLoansAndLeases


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value575358545954575858206542668264296383636863586247598961346133596056695626558753835148508549614753453145404613446342794307439845794596464947274903
Percentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.793.593.292.692.192.091.990.990.289.890.290.690.892.492.992.892.592.793.092.992.492.292.192.091.891.391.491.390.890.690.991.691.792.092.493.3

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value39643951866085810841204133813301301122811091045919791720655596562517478461423404400398389390397403416438457481587608615565519552563612651706738802
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating6.57.08.110.613.615.216.618.918.818.317.416.115.813.812.011.210.79.89.48.98.68.47.97.88.18.07.78.08.48.58.68.89.19.511.511.613.314.214.014.415.216.317.718.519.219.9

us-gaap:InterestExpense us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ForeignExchangeContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1.0-1.00.0-1.0-1.0-1.0-1.0-1.00.00.00.00.0
Percentage of InterestExpense-0.3-0.20.0-0.2-0.1-0.1-0.1-0.10.00.00.00.0
Percentage of InterestAndDividendIncomeOperating-0.0-0.00.0-0.0-0.0-0.0-0.0-0.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ForeignExchangeContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.0

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5743582258735555546060256066573757465791582057865551571858135700547354745447527750935056496147604537457646564497431543504423456045534570452846464001341431823283313631403023310930973228
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.593.091.989.486.484.883.481.181.281.782.683.984.286.288.088.889.390.290.691.191.491.692.192.291.992.092.392.091.691.591.491.290.990.588.588.486.785.886.085.684.883.782.381.580.880.1

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-35.0-100.0-74.0-158.0-92.017511623-8.033-14.015-3.09.0435132453146506647-3.0-6.015456.0-13.0-29.0-68.0-102.0
Percentage of InterestIncomeExpenseNet-0.6-1.7-1.3-2.8-1.72.91.90.4-0.10.6-0.20.3-0.10.20.70.90.60.80.60.91.01.30.9-0.1-0.10.31.00.1-0.3-0.7-1.5-2.2
Percentage of InterestAndDividendIncomeOperating-0.6-1.6-1.2-2.5-1.52.51.60.3-0.10.5-0.20.2-0.00.10.70.80.50.70.50.80.91.20.9-0.1-0.10.30.90.1-0.3-0.6-1.4-2.0
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, cof:CommercialBanking


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value517518491494486514489528539549536566560569566565555559537484454466461455439436421447424
Percentage of InterestIncomeExpenseNet9.39.58.18.18.58.98.49.19.39.99.49.79.810.410.310.410.511.010.69.89.510.310.19.89.810.19.710.19.3
Percentage of InterestAndDividendIncomeOperating8.38.26.96.86.97.36.97.57.88.38.18.68.79.39.39.49.610.09.79.08.89.49.39.09.09.38.99.28.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:CommercialBankingSegment


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value460520518491
Percentage of InterestIncomeExpenseNet8.08.99.58.1
Percentage of InterestAndDividendIncomeOperating7.58.38.26.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBanking


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value19041665165716621682170916791689163616091615163616491578151714981472143914201434144314441434145914251431143314681481
Percentage of InterestIncomeExpenseNet34.330.527.527.429.329.729.029.028.329.028.228.128.928.827.727.527.928.328.128.930.331.831.331.331.733.232.933.232.5
Percentage of InterestAndDividendIncomeOperating30.626.423.322.923.824.223.724.023.724.424.324.825.725.825.024.925.425.825.726.627.929.228.828.929.230.430.130.329.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBankingSegment


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value2101203016651657
Percentage of InterestIncomeExpenseNet36.634.930.527.5
Percentage of InterestAndDividendIncomeOperating34.232.426.423.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:CreditCardSegment


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value3217337233693702
Percentage of InterestIncomeExpenseNet56.057.961.761.4
Percentage of InterestAndDividendIncomeOperating52.453.953.352.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CreditCardSegment0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:CreditCard


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3292336937023794354635313590361735963396355835683440
Percentage of InterestIncomeExpenseNet59.361.761.462.561.861.562.062.162.261.262.261.460.4
Percentage of InterestAndDividendIncomeOperating53.053.352.152.250.149.950.651.352.251.553.654.053.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:CreditCard0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeExpenseNet us-gaap:DerivativeInstrumentRisk, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ForeignExchangeContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.01.00.01.02.07.07.01213121413128.08.06.07.06.05.01.01.0-1.0-5.00.00.00.0
Percentage of InterestIncomeExpenseNet0.00.00.00.00.00.10.10.20.20.20.20.20.20.10.10.10.10.10.10.00.0-0.0-0.10.00.00.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.10.10.20.20.20.20.20.20.10.10.10.10.10.10.00.0-0.0-0.10.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ForeignExchangeContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestRateContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value24523521917914226-5.0-44.0-62.0-60.0-42.0-36.0-19.06.0232539587277787986647875655448422123
Percentage of InterestIncomeExpenseNet4.34.03.73.22.60.4-0.1-0.8-1.1-1.0-0.7-0.6-0.30.10.40.40.71.11.31.51.51.61.71.31.71.61.41.21.11.00.50.5
Percentage of InterestAndDividendIncomeOperating4.03.83.42.92.20.4-0.1-0.6-0.9-0.8-0.6-0.5-0.30.10.30.40.61.01.21.31.41.41.61.21.61.51.31.11.00.90.40.5
Percentage of InterestAndDividendIncomeOperating us-gaap:InterestRateContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeExpenseNet us-gaap:FinancialInstrument, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:HeldtomaturitySecurities, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.00.00.00.0-9.0-10.0-8.0-8.0-9.0-10.0-10.0-24.0-37.0-40.0
Percentage of InterestIncomeExpenseNet0.00.00.00.0-0.1-0.2-0.1-0.1-0.2-0.2-0.2-0.4-0.6-0.7
Percentage of InterestAndDividendIncomeOperating0.00.00.00.0-0.1-0.1-0.1-0.1-0.1-0.1-0.2-0.4-0.6-0.6
Percentage of InterestAndDividendIncomeOperating us-gaap:HeldtomaturitySecurities us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5086376368569311157110112781163124810521085860936692
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating8.310.210.013.814.716.315.118.116.417.614.915.713.014.110.5

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3536332525662406-918.0-1340.011761333162514121261150219061346-971.011071036810791100594210139201114863115399910811194115485211171117106684311789314034078139111016697803608636
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating57.653.140.238.7-14.5-18.816.218.823.019.917.921.828.920.3-14.717.216.913.313.217.316.918.417.121.617.523.219.822.125.324.317.622.322.321.116.522.42.035.311.021.224.627.119.021.015.915.8

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

us-gaap:ForeignExchangeContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value24424310980-117.0321-90.029-131.0
Percentage of NetIncomeLoss6.97.34.23.312.7-24.0-7.72.2-8.1
Percentage of InterestAndDividendIncomeOperating4.03.91.71.3-1.94.5-1.20.4-1.9
Percentage of InterestAndDividendIncomeOperating us-gaap:ForeignExchangeContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.0

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

us-gaap:AvailableforsaleSecurities, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3.00.0190.00.0-13.03.01218-16.0-149.00.06.01.042
Percentage of NetIncomeLoss0.10.00.8-0.0-0.0-1.10.20.71.3-1.3-9.90.00.4-0.13.8
Percentage of InterestAndDividendIncomeOperating0.00.00.30.00.0-0.20.00.20.3-0.2-2.20.00.10.00.7
Percentage of InterestAndDividendIncomeOperating us-gaap:AvailableforsaleSecurities us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:HeldtomaturitySecurities, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.00.00.00.0-6.0-8.0-6.0-6.0-6.0-8.0-8.0-18.0-25.0-26.0
Percentage of NetIncomeLoss0.00.0-0.0-0.0-0.5-0.6-0.4-0.4-0.5-0.5-0.4-1.32.6-2.3
Percentage of InterestAndDividendIncomeOperating0.00.00.00.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.3-0.4-0.4
Percentage of InterestAndDividendIncomeOperating us-gaap:HeldtomaturitySecurities us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value244247109101-117.0321-108.026-125.0-153.0104-175.0-13.00.0-3.0375.01918222521231310.0163.08.06.014-44.05.01.0
Percentage of NetIncomeLoss6.97.44.24.212.7-24.0-9.22.0-7.7-10.88.2-11.7-0.70.00.33.30.52.32.32.22.72.12.51.21.21.40.30.70.51.2-5.20.40.1
Percentage of InterestAndDividendIncomeOperating4.03.91.71.6-1.94.5-1.50.4-1.8-2.21.5-2.5-0.20.0-0.00.60.10.30.30.40.40.40.40.30.20.30.10.20.10.3-0.90.10.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, cof:AccumulatedOtherComprehensiveIncomeLossOtherComponent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.01.00.02.00.00.01.02.00.01.01.00.01.01.02.01.01.02.01.02.00.0-2.00.03.00.01.02.0-2.04.01.0-11.00.0
Percentage of NetIncomeLoss0.00.00.00.1-0.0-0.00.10.20.00.10.10.00.10.1-0.20.10.10.20.10.20.0-0.20.00.30.00.10.2-0.20.30.1-1.30.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.00.00.10.00.00.0-0.00.10.0-0.20.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome cof:AccumulatedOtherComprehensiveIncomeLossOtherComponent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value3446323624662319-1009.0-1420.010411270153313481173144018141284-1043.010479487527109628719708481079830111597410561177113683510991100104882511739213968139111016
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating56.151.738.637.3-16.0-20.014.318.021.719.016.620.927.519.3-15.816.315.512.411.816.615.617.615.820.916.822.419.321.625.023.917.322.022.020.716.122.32.035.121.224.627.1

Preferred Stock Dividends Income Statement Impact

us-gaap:PreferredStockDividendsIncomeStatementImpact

us-gaap:PreferredStockDividendsIncomeStatementImpact


Preferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value60616867905597538052805380528052805375376537682929322120131313131313
Percentage of PreferredStockDividendsIncomeStatementImpact100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1.01.01.11.11.40.81.30.71.10.71.10.81.20.81.20.81.30.91.20.61.20.71.30.60.60.60.40.40.30.30.30.30.30.3

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value124110011013982805937101594296989488785888280470136985670465356566646162546220619459005672564758135639546853705544565156385551562457825055
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating20.216.015.915.812.713.214.013.313.712.612.612.413.412.1106.2108.8109.4107.7109.3111.5112.3112.7115.0114.3114.9113.5115.2115.4116.0113.0114.6113.1112.5109.9110.0110.0109.5

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


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
Value0.00.0-1.01.0-2.0-1.0-2.0-2.0-2.0-1.0-2.0-1.0-2.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.10.1-0.2-0.1-0.2-0.2-0.2-0.1-0.2-0.1-0.20.0
Percentage of InterestAndDividendIncomeOperating0.00.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:CorporateNonSegment, cof:InterchangeFeesContracts


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
Value0.00.0-1.01.0-1.0-1.0-2.0-1.0-2.0-1.0-2.0-1.0-1.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.10.1-0.1-0.1-0.2-0.1-0.2-0.1-0.2-0.1-0.10.0
Percentage of InterestAndDividendIncomeOperating0.00.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment cof:InterchangeFeesContracts0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateNonSegment, cof:ServiceChargesAndOtherCustomerFeesContracts


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
Value0.00.00.00.0-1.00.00.0-1.00.00.00.00.0-1.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.0-0.10.00.0-0.10.00.00.00.0-0.10.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.0-0.00.00.0-0.00.00.00.00.0-0.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment cof:ServiceChargesAndOtherCustomerFeesContracts0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, cof:InterchangeFeesContracts, cof:CommercialBanking


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1713151615131110.08.08.07.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.71.61.61.61.61.31.21.10.90.90.9
Percentage of InterestAndDividendIncomeOperating0.30.20.20.20.20.20.20.10.10.10.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:InterchangeFeesContracts cof:CommercialBanking0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:InterchangeFeesContracts, cof:CommercialBankingSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value24171315
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.91.71.61.6
Percentage of InterestAndDividendIncomeOperating0.40.30.20.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:InterchangeFeesContracts cof:CommercialBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:InterchangeFeesContracts, cof:ConsumerBanking


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5448505354524650464742
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.56.05.35.25.75.45.15.65.45.35.2
Percentage of InterestAndDividendIncomeOperating0.90.80.70.70.80.70.60.70.70.70.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:InterchangeFeesContracts cof:ConsumerBanking0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:InterchangeFeesContracts, cof:ConsumerBankingSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value67574850
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.45.76.05.3
Percentage of InterestAndDividendIncomeOperating1.10.90.80.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:InterchangeFeesContracts cof:ConsumerBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:InterchangeFeesContracts, cof:CreditCardSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value925743612688
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax74.574.276.073.4
Percentage of InterestAndDividendIncomeOperating15.111.99.79.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:InterchangeFeesContracts cof:CreditCardSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:InterchangeFeesContracts, us-gaap:CreditCard


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value703612688744722757702685661669594
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.676.073.473.376.678.178.577.277.075.973.9
Percentage of InterestAndDividendIncomeOperating11.39.79.710.210.210.79.99.79.610.18.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:InterchangeFeesContracts us-gaap:CreditCard0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:OtherContractRevenue, cof:CommercialBanking


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.00.01.01.01.01.00.01.00.01.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.10.10.10.10.00.10.00.10.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:OtherContractRevenue cof:CommercialBanking0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:OtherContractRevenue, cof:CommercialBankingSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.01.00.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.00.1
Percentage of InterestAndDividendIncomeOperating0.00.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:OtherContractRevenue cof:CommercialBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:OtherContractRevenue, cof:ConsumerBanking


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.03.0192526262425272829
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.42.02.52.82.72.72.83.13.23.6
Percentage of InterestAndDividendIncomeOperating0.10.00.30.30.40.40.30.40.40.40.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:OtherContractRevenue cof:ConsumerBanking0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:OtherContractRevenue, cof:ConsumerBankingSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value19193.019
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.51.90.42.0
Percentage of InterestAndDividendIncomeOperating0.30.30.00.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:OtherContractRevenue cof:ConsumerBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:OtherContractRevenue, cof:CreditCardSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value94705770
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.67.07.17.5
Percentage of InterestAndDividendIncomeOperating1.51.10.91.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:OtherContractRevenue cof:CreditCardSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:OtherContractRevenue, us-gaap:CreditCard


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10957707315201210.0-6.02.02.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.17.17.57.21.62.11.31.1-0.70.20.2
Percentage of InterestAndDividendIncomeOperating1.80.91.01.00.20.30.20.1-0.10.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:OtherContractRevenue us-gaap:CreditCard0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:ServiceChargesAndOtherCustomerFeesContracts, cof:CommercialBanking


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5043313235282523333532
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.15.33.33.23.72.92.82.63.84.04.0
Percentage of InterestAndDividendIncomeOperating0.80.70.40.40.50.40.40.30.50.50.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ServiceChargesAndOtherCustomerFeesContracts cof:CommercialBanking0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:ServiceChargesAndOtherCustomerFeesContracts, cof:CommercialBankingSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value66504331
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.35.05.33.3
Percentage of InterestAndDividendIncomeOperating1.10.80.70.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ServiceChargesAndOtherCustomerFeesContracts cof:CommercialBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:ServiceChargesAndOtherCustomerFeesContracts, cof:ConsumerBanking


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value423164737674750.0117123127
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.33.96.87.28.17.68.40.013.613.915.8
Percentage of InterestAndDividendIncomeOperating0.70.50.91.01.11.01.10.01.71.91.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ServiceChargesAndOtherCustomerFeesContracts cof:ConsumerBanking0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:ServiceChargesAndOtherCustomerFeesContracts, cof:ConsumerBankingSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value45443164
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.64.43.96.8
Percentage of InterestAndDividendIncomeOperating0.70.70.50.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ServiceChargesAndOtherCustomerFeesContracts cof:ConsumerBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:ServiceChargesAndOtherCustomerFeesContracts, us-gaap:CreditCard


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.00.00.00.00.02.0-6.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.2-0.70.00.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.00.00.0-0.10.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ServiceChargesAndOtherCustomerFeesContracts us-gaap:CreditCard0.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, cof:CommercialBanking


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6856474951423635414339
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.97.05.04.85.44.34.03.94.84.94.9
Percentage of InterestAndDividendIncomeOperating1.10.90.70.70.70.60.50.50.60.70.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBanking0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:CommercialBankingSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value91685647
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.36.87.05.0
Percentage of InterestAndDividendIncomeOperating1.51.10.90.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBanking


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10182133151156152145159163170169
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.310.214.214.916.615.716.217.919.019.321.0
Percentage of InterestAndDividendIncomeOperating1.61.31.92.12.22.12.02.32.42.62.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBanking0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBankingSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value13112082133
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.612.010.214.2
Percentage of InterestAndDividendIncomeOperating2.11.91.31.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:CreditCardSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value1019813669758
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax82.181.283.180.9
Percentage of InterestAndDividendIncomeOperating16.613.010.610.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CreditCardSegment0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:CreditCard


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value812669758817737777714695655671596
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax82.783.180.980.578.280.279.978.476.376.174.1
Percentage of InterestAndDividendIncomeOperating13.110.610.711.210.411.010.19.99.510.29.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:CreditCard0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

cof:InterchangeFeesContracts


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
Value1016817818775672752811790820758743714723643
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax81.981.680.878.983.580.379.983.984.684.883.883.282.080.0
Percentage of InterestAndDividendIncomeOperating16.513.012.812.510.610.611.211.211.610.710.510.411.09.7
Percentage of InterestAndDividendIncomeOperating cof:InterchangeFeesContracts0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cof:OtherContractRevenue


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
Value114909311560909942473636213131
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.29.09.211.77.59.69.84.54.94.04.12.43.53.9
Percentage of InterestAndDividendIncomeOperating1.91.41.51.90.91.31.40.60.70.50.50.30.50.5
Percentage of InterestAndDividendIncomeOperating cof:OtherContractRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cof:ServiceChargesAndOtherCustomerFeesContracts


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
Value1119410292739510511010210025144159161
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.99.410.19.49.110.110.311.710.511.22.816.818.020.0
Percentage of InterestAndDividendIncomeOperating1.81.51.61.51.21.31.41.61.41.40.42.12.42.4
Percentage of InterestAndDividendIncomeOperating cof:ServiceChargesAndOtherCustomerFeesContracts0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value7374711373377381655672497427695971247083701369627192690970136985670465356566646162546220619459005672564758135639546853705544565156385551562457825055
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating120.1113.6114.8118.8103.8102.0102.298.4100.799.999.5101.0109.0104.1106.2108.8109.4107.7109.3111.5112.3112.7115.0114.3114.9113.5115.2115.4116.0113.0114.6113.1112.5109.9110.0110.0109.5

us-gaap:Revenues us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value-58.0-219.0-68.0311-118.012472-11.0-34.028-25.0-46.0370-18.0291002215-40.048487454-3.0-35.0-2.0441.022-31.0-106.0-116.0
Percentage of Revenues-0.8-3.1-0.94.2-1.81.71.0-0.2-0.50.4-0.4-0.75.1-0.30.41.40.30.2-0.60.70.81.20.9-0.1-0.6-0.00.80.00.4-0.6-1.9-2.1
Percentage of InterestAndDividendIncomeOperating-0.9-3.5-1.15.0-1.91.71.0-0.2-0.50.4-0.4-0.75.6-0.30.41.60.40.2-0.70.80.91.31.0-0.1-0.7-0.00.90.00.5-0.7-2.2-2.3
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, cof:CommercialBanking


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value754698729717707714676687728758723754739752724740711688655626562589575587561545508578511
Percentage of Revenues10.210.610.19.710.210.09.59.810.510.510.510.810.611.211.111.311.011.010.510.19.510.410.210.19.910.09.510.49.0
Percentage of InterestAndDividendIncomeOperating12.111.010.39.910.010.19.59.710.611.510.911.411.512.311.912.312.312.311.911.610.911.911.611.611.511.610.711.910.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:CommercialBankingSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value717760698729
Percentage of Revenues9.710.710.610.1
Percentage of InterestAndDividendIncomeOperating11.712.111.010.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CommercialBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBanking


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value20111762178318141847187518391848179117841789181518411761171216641673161416111616161716401592164416041601158316631665
Percentage of Revenues27.226.924.624.426.526.326.026.425.724.825.925.926.426.326.225.325.925.825.926.127.428.928.228.328.429.329.530.029.5
Percentage of InterestAndDividendIncomeOperating32.427.925.125.026.126.525.926.226.027.027.027.528.728.728.227.728.929.029.230.031.333.232.032.632.834.033.334.433.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, cof:ConsumerBankingSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value2245217117621783
Percentage of Revenues30.430.526.924.6
Percentage of InterestAndDividendIncomeOperating36.634.727.925.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:ConsumerBankingSegment0.00.00.00.0

us-gaap:OperatingSegments, cof:CreditCardSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value4470440142144613
Percentage of Revenues60.661.964.363.6
Percentage of InterestAndDividendIncomeOperating72.870.366.764.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments cof:CreditCardSegment0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:CreditCard


Revenuesus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4305421446134824441645694540450344894280441544154305
Percentage of Revenues58.364.363.665.063.564.164.164.264.559.563.963.061.6
Percentage of InterestAndDividendIncomeOperating69.366.764.966.462.464.664.063.965.164.966.566.967.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:CreditCard0.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value423420425175421602421883421296396878390365378810373619373191372538362909363989362857365693361402350593348549357033345061339117330346334048313700310510306224308854300202298317290500297048289888296542300163312918301989296572294481206019200148199753199300197503169646165913
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value83061803367308865092
Percentage of Assets19.720.619.617.8
Percentage of Assets19.720.619.617.8
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value5174508750935127
Percentage of Assets1.21.21.21.3
Percentage of Assets1.21.21.21.3
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value24746264632661935519
Percentage of Assets5.86.26.39.1
Percentage of Assets5.86.26.39.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities, us-gaap:FinancialInstrument

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, cof:SecuritizationRelatedVariableInterestEntities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value0.00.05566
Percentage of Assets0.00.00.00.0
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary cof:SecuritizationRelatedVariableInterestEntities0.00.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, us-gaap:ResidentialMortgage


Assetsus-gaap:
Period End2020-12-312019-12-31
Value5566
Percentage of Assets0.00.0
Percentage of Assets0.00.0
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary us-gaap:ResidentialMortgage100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, cof:SecuritizationRelatedVariableInterestEntities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value22439242132442633394
Percentage of Assets5.35.75.88.6
Percentage of Assets5.35.75.88.6
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary cof:SecuritizationRelatedVariableInterestEntities100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, us-gaap:CollateralizedAutoLoans


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value1768206723602282
Percentage of Assets0.40.50.60.6
Percentage of Assets0.40.50.60.6
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary us-gaap:CollateralizedAutoLoans100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, us-gaap:CreditCardReceivables


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value20671221462206631112
Percentage of Assets4.95.25.28.0
Percentage of Assets4.95.25.28.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary us-gaap:CreditCardReceivables100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities, us-gaap:InvestmentType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, cof:AffordableHousingEntities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value4763467646024559
Percentage of Assets1.11.11.11.2
Percentage of Assets1.11.11.11.2
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary cof:AffordableHousingEntities100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, cof:NonsecuritizationRelatedVariableInterestEntities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value5174508750385061
Percentage of Assets1.21.21.21.3
Percentage of Assets1.21.21.21.3
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary cof:NonsecuritizationRelatedVariableInterestEntities100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, us-gaap:OtherInvestments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value411411436502
Percentage of Assets0.10.10.10.1
Percentage of Assets0.10.10.10.1
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary us-gaap:OtherInvestments100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, cof:AffordableHousingEntities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value272251242236
Percentage of Assets0.10.10.10.1
Percentage of Assets0.10.10.10.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary cof:AffordableHousingEntities100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, cof:InvestmentCompaniesProvidingCapitaltoLowIncomeandRuralCommunities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value2035199919511889
Percentage of Assets0.50.50.50.5
Percentage of Assets0.50.50.50.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary cof:InvestmentCompaniesProvidingCapitaltoLowIncomeandRuralCommunities100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, cof:NonsecuritizationRelatedVariableInterestEntities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value2307225021932125
Percentage of Assets0.50.50.50.5
Percentage of Assets0.50.50.50.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary cof:NonsecuritizationRelatedVariableInterestEntities100.0100.0100.0100.0

us-gaap:Assets us-gaap:FinancialInstrument, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

cof:SecuritizationRelatedVariableInterestEntities, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value565666
Percentage of Assets0.00.00.0
Percentage of Assets0.00.00.0
Percentage of Assets cof:SecuritizationRelatedVariableInterestEntities us-gaap:VariableInterestEntityNotPrimaryBeneficiary100.0100.0100.0

cof:SecuritizationRelatedVariableInterestEntities, us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value292572812633394
Percentage of Assets6.96.78.6
Percentage of Assets6.96.78.6
Percentage of Assets cof:SecuritizationRelatedVariableInterestEntities us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0

us-gaap:CollateralizedAutoLoans, us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value267130072282
Percentage of Assets0.60.70.6
Percentage of Assets0.60.70.6
Percentage of Assets us-gaap:CollateralizedAutoLoans us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0

us-gaap:CreditCardReceivables, us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value265862511931112
Percentage of Assets6.36.08.0
Percentage of Assets6.36.08.0
Percentage of Assets us-gaap:CreditCardReceivables us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0

us-gaap:ResidentialMortgage, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value565666
Percentage of Assets0.00.00.0
Percentage of Assets0.00.00.0
Percentage of Assets us-gaap:ResidentialMortgage us-gaap:VariableInterestEntityNotPrimaryBeneficiary100.0100.0100.0

us-gaap:Assets us-gaap:InvestmentType, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

cof:AffordableHousingEntities, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value458245534600
Percentage of Assets1.11.11.2
Percentage of Assets1.11.11.2
Percentage of Assets cof:AffordableHousingEntities us-gaap:VariableInterestEntityNotPrimaryBeneficiary100.0100.0100.0

cof:AffordableHousingEntities, us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value243248236
Percentage of Assets0.10.10.1
Percentage of Assets0.10.10.1
Percentage of Assets cof:AffordableHousingEntities us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0

cof:InvestmentCompaniesProvidingCapitaltoLowIncomeandRuralCommunities, us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value201420301889
Percentage of Assets0.50.50.5
Percentage of Assets0.50.50.5
Percentage of Assets cof:InvestmentCompaniesProvidingCapitaltoLowIncomeandRuralCommunities us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0

cof:NonsecuritizationRelatedVariableInterestEntities, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value504850295061
Percentage of Assets1.21.21.3
Percentage of Assets1.21.21.3
Percentage of Assets cof:NonsecuritizationRelatedVariableInterestEntities us-gaap:VariableInterestEntityNotPrimaryBeneficiary100.0100.0100.0

cof:NonsecuritizationRelatedVariableInterestEntities, us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value225722782125
Percentage of Assets0.50.50.5
Percentage of Assets0.50.50.5
Percentage of Assets cof:NonsecuritizationRelatedVariableInterestEntities us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0

us-gaap:OtherInvestments, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value466476502
Percentage of Assets0.10.10.1
Percentage of Assets0.10.10.1
Percentage of Assets us-gaap:OtherInvestments us-gaap:VariableInterestEntityNotPrimaryBeneficiary100.0100.0100.0

us-gaap:Assets us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value510450855127
Percentage of Assets1.21.21.3
Percentage of Assets1.21.21.3
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value315143040435519
Percentage of Assets7.57.29.1
Percentage of Assets7.57.29.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value358796363987361398363459365251340048332354320575317852319710320870312271314063313654316963311248301456300509309519296848291009282639286764266015263851260494263801256184254502247699255304248138255501258867272419262317259380257531176353170770171072171750170962143056
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets84.785.685.786.286.785.785.184.685.185.786.186.086.386.486.786.186.086.286.786.085.885.685.884.885.085.185.485.385.385.385.985.686.286.287.186.987.587.585.685.385.686.286.684.3

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value22857223252142016362
Percentage of Liabilities6.36.76.75.2
Percentage of Assets5.45.75.74.5
Percentage of Assets srt:ParentCompany27.527.829.325.1

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value1427131912401289
Percentage of Liabilities0.40.40.30.4
Percentage of Assets0.30.30.30.3
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary27.625.924.325.1

us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value10681121661243618201
Percentage of Liabilities3.03.33.45.5
Percentage of Assets2.52.92.94.7
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary43.246.046.751.2

us-gaap:Liabilities us-gaap:ConsolidatedEntities, us-gaap:FinancialInstrument

us-gaap:VariableInterestEntityPrimaryBeneficiary, cof:SecuritizationRelatedVariableInterestEntities


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value10624121231239318125
Percentage of Liabilities3.03.33.45.5
Percentage of Assets2.52.92.94.6
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary cof:SecuritizationRelatedVariableInterestEntities47.350.150.754.3

us-gaap:VariableInterestEntityPrimaryBeneficiary, us-gaap:CollateralizedAutoLoans


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value1509178420552012
Percentage of Liabilities0.40.50.60.6
Percentage of Assets0.40.40.50.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary us-gaap:CollateralizedAutoLoans85.486.387.188.2

us-gaap:VariableInterestEntityPrimaryBeneficiary, us-gaap:CreditCardReceivables


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value9115103391033816113
Percentage of Liabilities2.52.82.94.8
Percentage of Assets2.22.42.54.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary us-gaap:CreditCardReceivables44.146.746.951.8

us-gaap:Liabilities us-gaap:ConsolidatedEntities, us-gaap:InvestmentType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, cof:AffordableHousingEntities


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value1427131912401289
Percentage of Liabilities0.40.40.30.4
Percentage of Assets0.30.30.30.3
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary cof:AffordableHousingEntities30.028.226.928.3

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, cof:NonsecuritizationRelatedVariableInterestEntities


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value1427131912401289
Percentage of Liabilities0.40.40.30.4
Percentage of Assets0.30.30.30.3
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary cof:NonsecuritizationRelatedVariableInterestEntities27.625.924.625.5

us-gaap:VariableInterestEntityPrimaryBeneficiary, cof:AffordableHousingEntities


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value3117177.0
Percentage of Liabilities0.00.00.00.0
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary cof:AffordableHousingEntities11.46.87.03.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, cof:InvestmentCompaniesProvidingCapitaltoLowIncomeandRuralCommunities


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value26262669
Percentage of Liabilities0.00.00.00.0
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary cof:InvestmentCompaniesProvidingCapitaltoLowIncomeandRuralCommunities1.31.31.33.7

us-gaap:VariableInterestEntityPrimaryBeneficiary, cof:NonsecuritizationRelatedVariableInterestEntities


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value57434376
Percentage of Liabilities0.00.00.00.0
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary cof:NonsecuritizationRelatedVariableInterestEntities2.51.92.03.6

us-gaap:Liabilities us-gaap:FinancialInstrument, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

cof:SecuritizationRelatedVariableInterestEntities, us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2020-09-302020-06-302019-12-31
Value135621580318125
Percentage of Liabilities3.74.35.5
Percentage of Assets3.23.84.6
Percentage of Assets cof:SecuritizationRelatedVariableInterestEntities us-gaap:VariableInterestEntityPrimaryBeneficiary46.456.254.3

us-gaap:CollateralizedAutoLoans, us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2020-09-302020-06-302019-12-31
Value234426622012
Percentage of Liabilities0.60.70.6
Percentage of Assets0.60.60.5
Percentage of Assets us-gaap:CollateralizedAutoLoans us-gaap:VariableInterestEntityPrimaryBeneficiary87.888.588.2

us-gaap:CreditCardReceivables, us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2020-09-302020-06-302019-12-31
Value112181314116113
Percentage of Liabilities3.13.64.8
Percentage of Assets2.73.14.1
Percentage of Assets us-gaap:CreditCardReceivables us-gaap:VariableInterestEntityPrimaryBeneficiary42.252.351.8

us-gaap:Liabilities us-gaap:InvestmentType, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

cof:AffordableHousingEntities, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2020-09-302020-06-302019-12-31
Value128112621289
Percentage of Liabilities0.40.30.4
Percentage of Assets0.30.30.3
Percentage of Assets cof:AffordableHousingEntities us-gaap:VariableInterestEntityNotPrimaryBeneficiary28.027.728.0

cof:AffordableHousingEntities, us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2020-09-302020-06-302019-12-31
Value18187.0
Percentage of Liabilities0.00.00.0
Percentage of Assets0.00.00.0
Percentage of Assets cof:AffordableHousingEntities us-gaap:VariableInterestEntityPrimaryBeneficiary7.47.33.0

cof:NonsecuritizationRelatedVariableInterestEntities, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2020-09-302020-06-302019-12-31
Value128112621289
Percentage of Liabilities0.40.30.4
Percentage of Assets0.30.30.3
Percentage of Assets cof:NonsecuritizationRelatedVariableInterestEntities us-gaap:VariableInterestEntityNotPrimaryBeneficiary25.425.125.5

cof:NonsecuritizationRelatedVariableInterestEntities, us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2020-09-302020-06-302019-12-31
Value878776
Percentage of Liabilities0.00.00.0
Percentage of Assets0.00.00.0
Percentage of Assets cof:NonsecuritizationRelatedVariableInterestEntities us-gaap:VariableInterestEntityPrimaryBeneficiary3.93.83.6

us-gaap:Liabilities us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2020-09-302020-06-302019-12-31
Value128112621289
Percentage of Liabilities0.40.30.4
Percentage of Assets0.30.30.3
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary25.124.825.1

us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2020-09-302020-06-302019-12-31
Value136491589018201
Percentage of Liabilities3.84.45.5
Percentage of Assets3.23.84.7
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary43.352.351.2

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value423420425175421602421883421296396878390365378810373619373191372538362909363989362857365693361402350593348549357033345061339117330346334048313700310510306224308854300202298317290500297048289888296542300163312918301989296572294481206019200148199753199300197503169646
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value83061803367308865092
Percentage of LiabilitiesAndStockholdersEquity19.720.619.617.8
Percentage of Assets19.720.619.617.8
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value64624611886020458424560455683058011582355576753481516685063849926492034873050154491374804047514482134810847707472844768546659457304505344018438154280141744417504104141296404993967237192369502966629378286812755026541260612527024375265902661124294
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.314.414.313.813.314.314.915.414.914.313.914.013.713.613.313.914.013.813.314.014.214.414.215.215.014.914.614.714.714.714.114.413.813.812.913.112.512.514.414.714.413.813.40.00.00.015.716.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value60204580115166848730
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets14.314.913.913.3
Percentage of Assets srt:ParentCompany72.572.270.774.9

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1792178334943833398136791156453170-660.0-1263.0-1877.0-1793.0-1599.0-926.0-622.0-683.0-934.0-949.0121241-41.0-616.0-142.0-397.0-212.0-430.0-559.0-371.0-710.0-872.0-839.0-792.047373978135025316929144224524846946715983-1222.0315
Percentage of StockholdersEquity2.82.95.86.67.16.52.00.80.3-1.2-2.4-3.7-3.6-3.2-1.9-1.2-1.4-1.9-2.00.30.5-0.1-1.3-0.3-0.9-0.5-1.0-1.3-0.8-1.7-2.1-2.0-1.91.11.82.00.90.70.61.01.50.90.91.81.80.70.3-4.61.3
Percentage of Assets0.40.40.80.90.90.90.30.10.0-0.2-0.3-0.5-0.5-0.4-0.3-0.2-0.2-0.3-0.30.00.1-0.0-0.2-0.0-0.1-0.1-0.1-0.2-0.1-0.2-0.3-0.3-0.30.20.20.30.10.10.10.10.20.10.10.00.00.00.0-0.70.0
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
Value35472336713348033793335563345032980338263226232160320403197831868317793165631526314133132631157304392978629709296552959429063279392786927272272102660526526264262633926256261882526525217251361927419234191881914119084190591902918991189551727815860
Percentage of StockholdersEquity54.955.055.657.859.958.956.958.157.960.162.063.263.864.665.062.963.965.265.663.161.962.362.762.162.361.161.962.062.162.263.563.364.263.664.763.767.868.065.065.566.969.571.973.175.377.971.364.965.3
Percentage of Assets8.47.97.98.08.08.48.48.98.68.68.68.88.88.88.78.79.09.08.78.88.89.08.99.49.49.19.09.19.19.28.99.18.98.78.48.48.58.59.49.69.69.69.70.00.00.011.210.40.0
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
Value7.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.05.05.05.05.05.05.05.05.05.04.04.0
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312010-12-312009-12-312008-12-312007-12-31
Value0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.08530.00.00.030960.0
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.02.20.00.00.011.60.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.30.00.00.01.90.0
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value46461431674008837653353613655240340394763838637030358753488333626319963070031946310863032629766292452847927808270452640725540249252397323162222702125920404197311880417876168531605414905148411346213091122871139910406973089698418107271062111268
Percentage of StockholdersEquity71.970.566.664.463.164.369.567.868.869.269.468.967.465.063.063.763.363.162.660.759.258.357.255.454.754.553.252.650.849.748.947.345.843.341.640.540.140.245.444.642.841.439.237.335.534.540.339.946.4
Percentage of Assets11.010.29.58.98.49.210.310.410.39.99.69.69.28.88.48.88.98.78.38.58.48.48.18.48.28.17.87.77.57.36.96.86.36.05.45.35.05.06.56.56.25.75.30.00.00.06.36.40.0
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-19108.0-17440.0-16865.0-16862.0-16860.0-16858.0-16472.0-15527.0-15058.0-15056.0-14991.0-14353.0-13782.0-12980.0-12707.0-12703.0-12686.0-12685.0-12467.0-11599.0-10405.0-9776.0-8806.0-8180.0-7553.0-6928.0-6365.0-5863.0-5300.0-4359.0-4320.0-3574.0-3316.0-3315.0-3287.0-3287.0-3286.0-3286.0-3244.0-3243.0-3241.0-3240.0-3202.0-3202.0-3200.0-3198.0-3180.0-3166.0-3153.0
Percentage of StockholdersEquity-29.6-28.5-28.0-28.9-30.1-29.7-28.4-26.7-27.0-28.2-29.0-28.3-27.6-26.4-26.1-25.3-25.8-26.4-26.2-24.1-21.6-20.5-18.6-17.2-16.2-15.1-14.1-13.3-12.1-10.2-10.3-8.6-8.1-8.0-8.1-8.3-8.8-8.9-10.9-11.0-11.3-11.8-12.1-12.3-12.7-13.1-12.0-11.9-13.0
Percentage of Assets-4.5-4.1-4.0-4.0-4.0-4.2-4.2-4.1-4.0-4.0-4.0-4.0-3.8-3.6-3.5-3.5-3.6-3.6-3.5-3.4-3.1-3.0-2.6-2.6-2.4-2.3-2.1-2.0-1.8-1.5-1.5-1.2-1.1-1.1-1.1-1.1-1.1-1.1-1.6-1.6-1.6-1.6-1.60.00.00.0-1.9-1.90.0
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

Tier One Risk Based Capital

us-gaap:TierOneRiskBasedCapital

us-gaap:TierOneRiskBasedCapital


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4558343015374313439633162328383135528230
Percentage of TierOneRiskBasedCapital100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.811.010.09.49.39.810.29.5

us-gaap:TierOneRiskBasedCapital dei:LegalEntity

cof:CapitalOneBankUSAN.A.


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value19924178831637814791115681064485038103
Percentage of TierOneRiskBasedCapital43.741.643.843.034.932.427.128.7
Percentage of Assets4.74.64.44.03.23.22.82.7
Percentage of Assets cof:CapitalOneBankUSAN.A.0.00.00.00.00.00.00.00.0

cof:CapitalOneN.A.


Tier
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2667128445256372377120670217652113619930
Percentage of TierOneRiskBasedCapital58.566.168.569.162.366.367.470.6
Percentage of Assets6.37.36.96.55.86.56.86.7
Percentage of Assets cof:CapitalOneN.A.0.00.00.00.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-31
Value35088522744077145001565582530013749175371582119438134891162813296143171435287887015980112493938190407476
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.312.39.710.713.46.43.54.64.25.23.63.23.73.93.92.42.02.83.52.72.72.4

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value12976130501028681967296
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents31.894.976.357.158.4
Percentage of Assets3.13.32.82.22.0
Percentage of Assets srt:ParentCompany15.616.214.112.60.0

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
Value899391888727826474876999688271836493522750044817
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.42.32.32.12.12.22.42.12.52.52.8

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

cof:FurnitureAndEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312010-12-312009-12-31
Value1973221820181901183417351730187413151237
Percentage of PropertyPlantAndEquipmentGross21.924.123.123.024.524.825.126.126.325.7
Percentage of Assets0.50.60.50.50.50.50.60.60.70.7
Percentage of Assets cof:FurnitureAndEquipment0.00.00.00.00.00.00.00.00.00.0

us-gaap:BuildingAndBuildingImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312010-12-312009-12-31
Value3742390339943302295826742577238819481836
Percentage of PropertyPlantAndEquipmentGross41.642.545.840.039.538.237.433.238.938.1
Percentage of Assets0.91.01.10.90.80.80.80.81.01.1
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312010-12-312009-12-31
Value768689482902591514467720258239
Percentage of PropertyPlantAndEquipmentGross8.57.55.510.97.97.36.810.05.25.0
Percentage of Assets0.20.20.10.20.20.20.20.20.10.1
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312010-12-312009-12-31
Value366382386406423458552569562583
Percentage of PropertyPlantAndEquipmentGross4.14.24.44.95.66.58.07.911.212.1
Percentage of Assets0.10.10.10.10.10.10.20.20.30.3
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.0

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value21441996184717531681161815561632
Percentage of PropertyPlantAndEquipmentGross23.821.721.221.222.523.122.622.7
Percentage of Assets0.50.50.50.50.50.50.50.5
Percentage of Assets us-gaap:SoftwareAndSoftwareDevelopmentCosts0.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value4706481045364231381234153197334429062479-2255.0-2081.0
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.11.21.21.21.11.01.01.10.91.2-1.1-1.2

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value5.06.08.01416222825293043444344616161621018995101103106111110123130136143166161167177191199157625557
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value42274277428743334324433643784311424342054191414940954055403339553825372736753561355635423584362936023684368537523764380738393792376637363587351935563062274827852754273927492736
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.01.01.01.01.11.11.11.11.11.11.11.11.11.11.11.11.11.01.01.01.11.11.21.21.21.21.21.31.31.31.31.31.21.11.21.21.01.31.41.41.41.41.6

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value146541465414653146481464514645146531462414545145461454414513145311453614533145321452414521145191449314495144921448013983139841397813978139701397713974139781390613900139001390413901138641359513592135931359613597135911359611964
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.53.43.53.53.53.73.83.93.93.93.94.04.04.04.04.04.14.24.14.24.34.44.34.54.54.64.54.74.74.84.74.84.74.64.44.64.74.66.66.86.86.86.98.07.2

us-gaap:Goodwill us-gaap:StatementBusinessSegments

cof:CommercialBanking


Goodwillus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value492049204920492049204884488448844884490149014901490149014901490149014901489748834384438443844384438343844383438843184318431843184318
Percentage of Goodwill33.633.633.633.633.633.633.633.633.733.733.733.733.733.733.833.833.833.833.833.731.431.431.431.431.431.431.431.431.131.131.131.131.8
Percentage of Assets1.21.21.21.31.31.31.31.31.31.31.41.31.41.41.41.41.41.41.51.51.41.41.41.41.51.51.51.51.51.51.41.42.1
Percentage of Assets cof:CommercialBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cof:CommercialBankingSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value492049204920492048844901
Percentage of Goodwill33.633.633.633.633.633.7
Percentage of Assets1.21.21.21.31.31.3
Percentage of Assets cof:CommercialBankingSegment0.00.00.00.00.00.0

cof:ConsumerBanking


Goodwillus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value464546454645464546444599460046004600460046004600460046004600460046004600460046004600459845984593458445844585458545864586458645834583
Percentage of Goodwill31.731.731.731.731.831.631.631.631.731.731.631.731.731.731.731.731.731.731.731.832.932.932.932.932.832.832.832.833.033.033.033.033.7
Percentage of Assets1.11.11.21.21.21.21.21.21.31.31.31.31.31.31.31.31.31.41.41.41.51.51.51.51.51.51.61.51.61.51.51.52.2
Percentage of Assets cof:ConsumerBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cof:ConsumerBankingSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value464546454645464546004600
Percentage of Goodwill31.731.731.731.731.631.7
Percentage of Assets1.11.11.11.21.21.3
Percentage of Assets cof:ConsumerBankingSegment0.00.00.00.00.00.0

cof:CreditCardSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value508950895088508850605032
Percentage of Goodwill34.734.734.734.734.834.6
Percentage of Assets1.21.21.21.31.41.4
Percentage of Assets cof:CreditCardSegment0.00.00.00.00.00.0

us-gaap:CreditCard


Goodwillus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312016-12-312015-12-31
Value508350805080508850605062506250605029503250184997
Percentage of Goodwill34.734.734.734.734.634.834.834.834.734.634.634.5
Percentage of Assets1.21.21.31.31.31.41.41.41.41.41.41.5
Percentage of Assets us-gaap:CreditCard0.00.00.00.00.00.00.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value808490991401561741811942232542893343784214815426036657618489371041100511101212131614401849
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.20.20.20.20.30.30.30.30.40.40.40.50.6

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-06-302015-03-312014-12-31
Value9.08.010.01245546888107129150166198230261305349393436490552618689841912972
Percentage of IntangibleAssetsNetExcludingGoodwill11.29.511.112.132.134.639.148.655.257.859.157.459.360.862.063.464.465.265.664.465.166.066.275.875.273.9
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.20.20.20.30.30.3
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIntangibleAssets


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value7176808795102106938794103119128136144153162172183212222229243113118125142
Percentage of IntangibleAssetsNetExcludingGoodwill88.890.588.987.967.965.460.951.444.842.240.641.238.336.034.231.829.928.527.527.926.224.423.311.210.610.310.8
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.00.00.00.0
Percentage of Assets us-gaap:OtherIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312014-12-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value821312157017061845197521352304257127622961907610660721759733906
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.40.50.60.60.70.70.80.80.91.00.30.30.30.40.40.40.5

Intangible Assets Net Including Goodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312012-09-302012-06-302011-12-31
Value1473414738147431474714785148011482714805147391476914798148021486514914149541501315066151241518415254153431542915521149881509415190152941541015547156801582716475166631682514202
Percentage of IntangibleAssetsNetIncludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.53.53.53.53.53.73.83.93.94.04.04.14.14.14.14.24.34.34.34.44.54.74.64.84.95.05.05.15.25.45.35.35.55.76.9

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
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
Value332617202145286443103662333236662938231627152276
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.40.60.81.21.11.11.20.91.11.41.3

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
Value13161433144814901547
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0
Percentage of Assets0.30.40.40.40.4

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2254021415212052097020945195141761317086171771713115908161421618316036166581773917134173631842017090173941627616450153741556014893157131500514970146891661415709164371628017334165971699713626113251098510268105921104010394
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.35.05.05.05.04.94.54.54.64.64.34.44.44.44.64.94.95.05.25.05.14.94.94.95.04.95.15.05.05.15.65.45.55.45.55.55.74.65.55.55.15.35.66.1

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value147310171250729
Percentage of OtherAssets6.95.87.94.4
Percentage of Assets0.30.30.30.2
Percentage of Assets srt:ParentCompany1.81.31.71.1

Long Term Debt

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebt

cof:FixedUnsecuredSeniorDebt, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value188831947821045216852170124610233022345724076230272329023531248242292022776208152117419628175461830316924168371655917539160971662415174150559612
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.54.65.05.15.26.26.06.26.46.26.36.56.86.36.25.86.05.64.95.35.05.15.05.65.25.44.95.03.2
Percentage of Assets cof:FixedUnsecuredSeniorDebt us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cof:FixedUnsecuredSubordinatedDebt, us-gaap:SubordinatedDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value46364630472847554772474344754530475246254543441344504486453345584556452845324700424942004080265426102655263025992670
Percentage of LongTermDebt24.623.822.521.922.019.319.219.319.720.119.518.817.919.619.921.921.523.125.825.725.124.924.615.116.216.017.317.327.8
Percentage of Assets1.11.11.11.11.11.21.11.21.31.21.21.21.21.21.21.31.31.31.31.41.31.31.20.80.80.90.90.90.9
Percentage of Assets cof:FixedUnsecuredSubordinatedDebt us-gaap:SubordinatedDebt0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cof:FloatingUnsecuredSeniorDebt, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value13591359160920082008269626952695299429932993334736463645344630472748224913539986996991198158012801280880880852
Percentage of LongTermDebt7.27.07.69.39.311.011.611.512.413.012.914.214.715.915.114.613.011.57.75.54.14.27.29.08.07.75.85.88.9
Percentage of Assets0.30.30.40.50.50.70.70.70.80.80.80.91.01.00.90.80.80.60.40.30.20.20.40.50.40.40.30.30.3
Percentage of Assets cof:FloatingUnsecuredSeniorDebt us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cof:UnsecuredSeniorDebt, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value2024220837226542369323709273062599726152270702602026283268782847026565262222386223922218771889919301176231753617757191191737717904160541593510464
Percentage of LongTermDebt107.2107.0107.6109.3109.3111.0111.6111.5112.4113.0112.9114.2114.7115.9115.1114.6113.0111.5107.7105.5104.1104.2107.2109.0108.0107.7105.8105.8108.9
Percentage of Assets4.84.95.45.65.66.96.76.97.27.07.17.47.87.37.26.66.86.35.35.65.25.35.36.15.65.85.25.33.5
Percentage of Assets cof:UnsecuredSeniorDebt us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:LongtermDebtType

cof:FHLBAdvanceCapitalLeaseObligationandGPMH


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value5970757985921039393105370631188321894017211
Percentage of LongTermDebt0.30.40.40.40.40.40.40.40.40.51.62.70.81.439.398.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.10.20.10.12.44.8
Percentage of Assets cof:FHLBAdvanceCapitalLeaseObligationandGPMH0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

cof:Otherborrowings


Long
Period End2020-12-312019-12-312018-12-31
Value7571039420
Percentage of LongTermDebt0.430.540.4
Percentage of Assets0.01.82.5
Percentage of Assets cof:Otherborrowings0.00.00.0

cof:SeniorAndSubordinatedNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value2487825467273822844828481320493047230682318223064530826312913292031051307552842028478264052343124001218722173621837217731998720559186841853413134
Percentage of LongTermDebt131.7130.7130.1131.2131.2130.2130.8130.8132.2133.1132.4133.0132.6135.5135.0136.5134.5134.5133.5131.1129.2129.1131.9124.1124.2123.7123.1123.1136.6
Percentage of Assets5.96.06.56.76.88.17.88.18.58.28.38.69.08.68.47.98.17.66.67.06.46.66.56.96.46.76.06.24.4
Percentage of Assets cof:SeniorAndSubordinatedNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CapitalLeaseObligations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value5970757985921034846323233333333240.0
Percentage of LongTermDebt0.30.40.40.40.40.40.40.20.20.20.20.20.20.20.20.10.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SecuredDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value105611207112414135661576117141178081891016959192731830718649196491866520010185281882618411161301491316166156561378512717116241050810289
Percentage of LongTermDebt55.962.059.062.672.669.776.480.670.483.778.679.379.281.487.994.4107.3100.695.388.697.689.385.676.576.669.8107.0
Percentage of Assets2.52.82.93.23.74.34.65.04.55.24.95.15.45.15.55.35.35.34.84.54.85.04.44.23.83.53.5
Percentage of Assets us-gaap:SecuredDebt0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Debt And Capital Lease Obligations

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:DebtAndCapitalLeaseObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3634338450405394279544900556815569750149492335035858905522055331050693602815945849954484396046059820591815049759115427784845739114301184065431845362313749249910383773587432885395613431537735397974179621014
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.69.09.610.110.714.014.313.213.213.515.814.414.614.016.516.514.213.916.917.317.515.317.713.615.713.110.413.711.012.212.515.912.712.111.219.217.118.920.021.212.4

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value35498376083987142093443274928248383496854887450023495035057152757500375970558691489964739359468587415818249580581344175731377
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.48.89.510.010.512.412.413.113.113.413.313.914.513.816.316.214.013.616.717.017.215.017.413.310.2

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value272
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value250
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value216
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value180
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value721
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.2

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value16881756174517861836
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.50.50.5

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value1935
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets0.5

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value247
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.1

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value64624611886020458424560455683058011582355576753481516685063849926492034873050154491374804047514482134810847707472844768546659457304505344018438154280141744417504104141296404993967237192369502966629378286812755026541260612527024375265902661124294
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.314.414.313.813.314.314.915.414.914.313.914.013.713.613.313.914.013.813.314.014.214.414.215.215.014.914.614.714.714.714.114.413.813.812.913.112.512.514.414.714.413.813.40.00.00.015.716.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value60204580115166848730
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets14.314.913.913.3
Percentage of Assets srt:ParentCompany72.572.270.774.9

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1792178334943833398136791156453170-660.0-1263.0-1877.0-1793.0-1599.0-926.0-622.0-683.0-934.0-949.0121241-41.0-616.0-142.0-397.0-212.0-430.0-559.0-371.0-710.0-872.0-839.0-792.047373978135025316929144224524846946715983-1222.0315
Percentage of StockholdersEquity2.82.95.86.67.16.52.00.80.3-1.2-2.4-3.7-3.6-3.2-1.9-1.2-1.4-1.9-2.00.30.5-0.1-1.3-0.3-0.9-0.5-1.0-1.3-0.8-1.7-2.1-2.0-1.91.11.82.00.90.70.61.01.50.90.91.81.80.70.3-4.61.3
Percentage of Assets0.40.40.80.90.90.90.30.10.0-0.2-0.3-0.5-0.5-0.4-0.3-0.2-0.2-0.3-0.30.00.1-0.0-0.2-0.0-0.1-0.1-0.1-0.2-0.1-0.2-0.3-0.3-0.30.20.20.30.10.10.10.10.20.10.10.00.00.00.0-0.70.0
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
Value35472336713348033793335563345032980338263226232160320403197831868317793165631526314133132631157304392978629709296552959429063279392786927272272102660526526264262633926256261882526525217251361927419234191881914119084190591902918991189551727815860
Percentage of StockholdersEquity54.955.055.657.859.958.956.958.157.960.162.063.263.864.665.062.963.965.265.663.161.962.362.762.162.361.161.962.062.162.263.563.364.263.664.763.767.868.065.065.566.969.571.973.175.377.971.364.965.3
Percentage of Assets8.47.97.98.08.08.48.48.98.68.68.68.88.88.88.78.79.09.08.78.88.89.08.99.49.49.19.09.19.19.28.99.18.98.78.48.48.58.59.49.69.69.69.70.00.00.011.210.40.0
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
Value7.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.07.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.06.05.05.05.05.05.05.05.05.05.04.04.0
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312010-12-312009-12-312008-12-312007-12-31
Value0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.08530.00.00.030960.0
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.02.20.00.00.011.60.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.30.00.00.01.90.0
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value46461431674008837653353613655240340394763838637030358753488333626319963070031946310863032629766292452847927808270452640725540249252397323162222702125920404197311880417876168531605414905148411346213091122871139910406973089698418107271062111268
Percentage of StockholdersEquity71.970.566.664.463.164.369.567.868.869.269.468.967.465.063.063.763.363.162.660.759.258.357.255.454.754.553.252.650.849.748.947.345.843.341.640.540.140.245.444.642.841.439.237.335.534.540.339.946.4
Percentage of Assets11.010.29.58.98.49.210.310.410.39.99.69.69.28.88.48.88.98.78.38.58.48.48.18.48.28.17.87.77.57.36.96.86.36.05.45.35.05.06.56.56.25.75.30.00.00.06.36.40.0
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-19108.0-17440.0-16865.0-16862.0-16860.0-16858.0-16472.0-15527.0-15058.0-15056.0-14991.0-14353.0-13782.0-12980.0-12707.0-12703.0-12686.0-12685.0-12467.0-11599.0-10405.0-9776.0-8806.0-8180.0-7553.0-6928.0-6365.0-5863.0-5300.0-4359.0-4320.0-3574.0-3316.0-3315.0-3287.0-3287.0-3286.0-3286.0-3244.0-3243.0-3241.0-3240.0-3202.0-3202.0-3200.0-3198.0-3180.0-3166.0-3153.0
Percentage of StockholdersEquity-29.6-28.5-28.0-28.9-30.1-29.7-28.4-26.7-27.0-28.2-29.0-28.3-27.6-26.4-26.1-25.3-25.8-26.4-26.2-24.1-21.6-20.5-18.6-17.2-16.2-15.1-14.1-13.3-12.1-10.2-10.3-8.6-8.1-8.0-8.1-8.3-8.8-8.9-10.9-11.0-11.3-11.8-12.1-12.3-12.7-13.1-12.0-11.9-13.0
Percentage of Assets-4.5-4.1-4.0-4.0-4.0-4.2-4.2-4.1-4.0-4.0-4.0-4.0-3.8-3.6-3.5-3.5-3.6-3.6-3.5-3.4-3.1-3.0-2.6-2.6-2.4-2.3-2.1-2.0-1.8-1.5-1.5-1.2-1.1-1.1-1.1-1.1-1.1-1.1-1.6-1.6-1.6-1.6-1.60.00.00.0-1.9-1.90.0
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value7000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.07000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.06000000.05000000.05000000.05000000.05000000.05000000.05000000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value3547233671334803379333556334503298033826322623216032040319783186831779316563152631413313263115730439297862970929655295942906327939278692727226526
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.47.97.98.08.08.48.48.98.68.68.68.88.88.88.78.79.09.08.78.88.89.08.99.49.49.19.09.18.9

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4646143167400883765335361365524034039476383863703035875348833362631996307003194631086303262976629245284792780827045264072554024925239732316222270212592040419731188041787616853160541490514841134621309112287113991040610727
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.010.29.58.98.49.210.310.410.39.99.69.69.28.88.48.88.98.78.38.58.48.48.18.48.28.17.87.77.57.36.96.86.36.05.45.35.05.06.56.56.25.75.36.3

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value1792178334943833398136791156453170-660.0-1263.0-1877.0-1793.0-1599.0-926.0-622.0-683.0-934.0-949.0121241-41.0-616.0-142.0-397.0-212.0-430.0-559.0-371.0-710.0-872.0-839.0-792.047373978135025316929144224524883-1222.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.80.90.90.90.30.10.0-0.2-0.3-0.5-0.5-0.4-0.3-0.2-0.2-0.3-0.30.00.1-0.0-0.2-0.0-0.1-0.1-0.1-0.2-0.1-0.2-0.3-0.3-0.30.20.20.30.10.10.10.10.20.10.10.0-0.7

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:FinancialInstrument, us-gaap:StatementEquityComponents

us-gaap:AvailableforsaleSecurities, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-31
Value10382186237423732151935225125-147.0-439.0-653.0-630.0-565.017191181-4.0162
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax58.262.661.959.658.580.949.773.522.334.834.835.135.3-1.8-30.7-26.50.4-26.3
Percentage of Assets0.20.50.60.60.50.20.10.0-0.0-0.1-0.2-0.2-0.20.00.10.1-0.00.0
Percentage of Assets us-gaap:AvailableforsaleSecurities us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:HeldtomaturitySecurities, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Accumulated
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-31
Value0.00.0-170.0-178.0-184.0-190.0-196.0-204.0-212.0-524.0-549.0-575.0-621.0-725.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax0.00.0-37.5-104.727.915.010.411.413.356.688.384.265.4117.7
Percentage of Assets0.00.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2
Percentage of Assets us-gaap:HeldtomaturitySecurities us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

cof:AccumulatedOtherComprehensiveIncomeLossOtherComponent


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-31
Value-24.0-24.0-23.0-28.0-26.0-26.0-26.0-43.0-41.0-41.0-39.0-30.0-29.0-29.00.0-12.0-16.0-19.0-24.0-29.0-33.0-41.0-30.0-33.0-23.0-23.0-21.0-8.0-13.0-12.0-11.0-36.0-35.0-39.0-41.0-60.0-46.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-1.3-1.3-0.7-0.7-0.7-0.7-2.2-9.5-24.16.23.11.61.61.8-0.01.92.32.02.5-24.0-13.7100.04.923.25.810.84.91.43.51.71.34.34.4-8.2-5.5-35.5-18.5
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets cof:AccumulatedOtherComprehensiveIncomeLossOtherComponent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-31
Value7307811362161017851728354585396-141.0-418.0-856.0-775.0-662.0-281.0-116.0-99.0-144.0-78.04986404971203219117210.0-88.0-20.0-91.0-110.0-76.0-129.03245-26.0-52.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax40.743.839.042.044.847.030.6129.1232.921.433.145.643.241.430.318.614.515.48.2411.6265.6-1212.2-19.5-226.1-22.9-81.1-2.315.75.412.812.69.116.36.86.1-15.4-21.0
Percentage of Assets0.20.20.30.40.40.40.10.20.1-0.0-0.1-0.2-0.2-0.2-0.1-0.0-0.0-0.0-0.00.10.20.20.00.10.00.10.0-0.0-0.0-0.0-0.0-0.0-0.00.00.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Accumulated
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312013-06-302013-03-312012-12-31
Value10891038218623732151935-532.0550708
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax60.858.262.659.658.580.967.2116.395.8
Percentage of Assets0.30.20.50.60.50.2-0.20.20.2
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1792178334943833398136791156453170-660.0-1263.0-926.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.80.90.90.90.30.10.0-0.2-0.3-0.3
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-31
Value-3.0-12.0-31.0-123.0-151.0-174.0-107.0-144.0-132.0-147.0-177.0-142.0-155.0-131.0-138.0-136.0-174.0-205.0-222.0-192.0-172.0-142.0-143.0-109.0-57.0-92.0-8.024106274013-111.0-93.032-49.0-36.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-0.2-0.7-0.9-3.2-3.8-4.7-9.3-31.8-77.622.314.07.68.68.214.921.925.521.923.4-158.7-71.4346.323.276.814.443.41.9-4.3-28.6-3.8-4.6-1.514.0-19.74.3-29.0-14.5
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.00.0-0.0-0.00.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2021-06-302020-09-302020-03-312019-09-302016-12-312015-12-312015-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1641121120914634830.048424271720212316171231881210.010.08.08.07.08.07.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302020-09-302020-03-312019-09-302016-12-312015-12-312015-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1641121120914634830.048424271720212316171231881210.010.08.08.07.08.07.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value84111524829465565244442586847326172504434331.060342822384042383330311940213019182620212629
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value84111524829465565244442586847326172504434331.060342822384042383330311940213019182620212629
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value405816364627285738065409412034124226488139403351408016074091306838603163199532932466410211224657235519931603278117613159-5280.09632283827949274981168614661539155524921869122320927872024
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 InterestAndDividendIncomeOperating66.126.172.446.060.276.156.748.259.768.855.948.661.924.261.947.863.052.133.256.844.374.420.890.247.740.131.856.937.466.5-109.1192.756.655.318.194.836.536.841.640.567.449.83.384.172.750.2

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-14963.07272-5924.0-13976.040181041-17112.0-5761.0-5138.05013-9747.0-2256.0-4297.0682-3796.0-7450.0-6373.02078-10453.0-6259.0-8190.0-728.0-20166.0-5089.0-7542.03071-7904.0-4220.0-7253.03386789-797.0-1413.05142-6846.0-7641.0-26635.023135-7214.0-372.0-2321.0-456.0-1487.0-522.03316141
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-243.7116.1-92.7-224.963.614.6-235.4-81.4-72.670.7-138.3-32.7-65.110.3-57.5-116.0-104.034.2-174.0-108.0-147.0-13.2-374.6-98.5-152.861.7-156.7-86.4-153.971.216.3-15.9-28.2101.8-133.8-145.4-577.0581.4-194.9-9.7-62.7-12.2-40.5-13.78.6152.4

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
Value-6281.02595-2933.0-438.023434510192044065-2705.0-3945.07668-2763.0-804.0-2324.052696155-273.0-7933.0934049117638-6162.0202301133452-3415.073958556042-6654.05064-7770.0-3518.0-12248.01100826502722175155-1468.0-1499.013091672-2944.0-5417.0-9352.0
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 InterestAndDividendIncomeOperating-102.341.4-45.9-7.0370.971.8126.657.5-38.2-55.6108.8-40.1-12.2-35.079.895.9-4.5-130.7155.484.8137.1-111.7375.72.269.9-68.7146.617.5128.2-140.0104.6-155.5-70.2-242.5215.250.45.95.5139.3-38.3-40.534.945.5-77.2-141.3-232.1

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-17186.011503-4230.0-11557.03125811551-3788.01716-3617.059491861-1668.0-1021.0-35.055641773-2786.0-2692.03112
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-279.9183.7-66.2-186.0494.7162.5-52.124.3-51.183.926.4-24.2-15.5-0.584.327.6-45.5-44.351.8

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value229345-207.0154-826.0-748.0-224.0-57.0-76.0615655455401755-86.0-98.0-137.0-65.0-244.0-238.0-139.0
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value405816364627285738065409412034124226488139403351408016074091306838603163199532932466410211224657235519931603278117613159-5280.09632283827949274981168614661539155524921869122320927872024
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 InterestAndDividendIncomeOperating66.126.172.446.060.276.156.748.259.768.855.948.661.924.261.947.863.052.133.256.844.374.420.890.247.740.131.856.937.466.5-109.1192.756.655.318.194.836.536.841.640.567.449.83.384.172.750.2

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3536332525662406-918.0-1340.011761333162514121261150219061346-971.011071036810791100594210139201114863115399910811194115485211171117106684311789314034078139111016697803608636
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating57.653.140.238.7-14.5-18.816.218.823.019.917.921.828.920.3-14.717.216.913.313.217.316.918.417.121.617.523.219.822.125.324.317.622.322.321.116.522.42.035.311.021.224.627.119.021.015.915.8

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

us-gaap:ForeignExchangeContract, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value24424310980-117.0321-90.029-131.0
Percentage of NetIncomeLoss6.97.34.23.312.7-24.0-7.72.2-8.1
Percentage of InterestAndDividendIncomeOperating4.03.91.71.3-1.94.5-1.20.4-1.9
Percentage of InterestAndDividendIncomeOperating us-gaap:ForeignExchangeContract us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.0

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

us-gaap:AvailableforsaleSecurities, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3.00.0190.00.0-13.03.01218-16.0-149.00.06.01.042
Percentage of NetIncomeLoss0.10.00.8-0.0-0.0-1.10.20.71.3-1.3-9.90.00.4-0.13.8
Percentage of InterestAndDividendIncomeOperating0.00.00.30.00.0-0.20.00.20.3-0.2-2.20.00.10.00.7
Percentage of InterestAndDividendIncomeOperating us-gaap:AvailableforsaleSecurities us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:HeldtomaturitySecurities, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.00.00.00.0-6.0-8.0-6.0-6.0-6.0-8.0-8.0-18.0-25.0-26.0
Percentage of NetIncomeLoss0.00.0-0.0-0.0-0.5-0.6-0.4-0.4-0.5-0.5-0.4-1.32.6-2.3
Percentage of InterestAndDividendIncomeOperating0.00.00.00.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.3-0.4-0.4
Percentage of InterestAndDividendIncomeOperating us-gaap:HeldtomaturitySecurities us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value244247109101-117.0321-108.026-125.0-153.0104-175.0-13.00.0-3.0375.01918222521231310.0163.08.06.014-44.05.01.0
Percentage of NetIncomeLoss6.97.44.24.212.7-24.0-9.22.0-7.7-10.88.2-11.7-0.70.00.33.30.52.32.32.22.72.12.51.21.21.40.30.70.51.2-5.20.40.1
Percentage of InterestAndDividendIncomeOperating4.03.91.71.6-1.94.5-1.50.4-1.8-2.21.5-2.5-0.20.0-0.00.60.10.30.30.40.40.40.40.30.20.30.10.20.10.3-0.90.10.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, cof:AccumulatedOtherComprehensiveIncomeLossOtherComponent


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.01.00.02.00.00.01.02.00.01.01.00.01.01.02.01.01.02.01.02.00.0-2.00.03.00.01.02.0-2.04.01.0-11.00.0
Percentage of NetIncomeLoss0.00.00.00.1-0.0-0.00.10.20.00.10.10.00.10.1-0.20.10.10.20.10.20.0-0.20.00.30.00.10.2-0.20.30.1-1.30.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.00.00.10.00.00.0-0.00.10.0-0.20.0
Percentage of InterestAndDividendIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome cof:AccumulatedOtherComprehensiveIncomeLossOtherComponent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value87119755450246446577217454167805334778960464440-3.074503830538468605854463753635418427532304047
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
Value-14963.07272-5924.0-13976.040181041-17112.0-5761.0-5138.05013-9747.0-2256.0-4297.0682-3796.0-7450.0-6373.02078-10453.0-6259.0-8190.0-728.0-20166.0-5089.0-7542.03071-7904.0-4220.0-7253.03386789-797.0-1413.05142-6846.0-7641.0-26635.023135-7214.0-372.0-2321.0-456.0-1487.0-522.03316141
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-243.7116.1-92.7-224.963.614.6-235.4-81.4-72.670.7-138.3-32.7-65.110.3-57.5-116.0-104.034.2-174.0-108.0-147.0-13.2-374.6-98.5-152.861.7-156.7-86.4-153.971.216.3-15.9-28.2101.8-133.8-145.4-577.0581.4-194.9-9.7-62.7-12.2-40.5-13.78.6152.4

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value163178167201188154256235213183205240224205242293261222271184190134121182761539715512112919617221423620197106156461109267115757674
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-6281.02595-2933.0-438.023434510192044065-2705.0-3945.07668-2763.0-804.0-2324.052696155-273.0-7933.0934049117638-6162.0202301133452-3415.073958556042-6654.05064-7770.0-3518.0-12248.01100826502722175155-1468.0-1499.013091672-2944.0-5417.0-9352.0
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 InterestAndDividendIncomeOperating-102.341.4-45.9-7.0370.971.8126.657.5-38.2-55.6108.8-40.1-12.2-35.079.895.9-4.5-130.7155.484.8137.1-111.7375.72.269.9-68.7146.617.5128.2-140.0104.6-155.5-70.2-242.5215.250.45.95.5139.3-38.3-40.534.945.5-77.2-141.3-232.1

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
Value181184454718318518419018819118919119619719519519519519420220521121421721816716616917017417217717630292929242223232322232323
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
Value16685753.02.02.03869454692.0656385718022734.0171.02188681194629970626627625563502563941397462581.0280.01.00.0421.02.01.0380.02.02.018
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

cof:StockIncentivePlan2004


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1.7933.1853.4564.7666.9859.3221012
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

cof:StockIncentivePlan2004


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value63.9155.5456.0348.548.0353.9855.8757.41
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value573536773431407558715213469051114573361939533712
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits us-gaap:ReasonablyPossibleSignificantChangeInUnrecognizedTaxBenefitsByItem

us-gaap:UnrecognizedTaxBenefits

cof:AccruedInterestAndPenalties


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4631352924333639546065
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:GrossTaxInterestAndPenalties


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value497462475115109163143153262273350
Percentage of UnrecognizedTaxBenefits1080.41490.31357.1396.6454.2493.9397.2392.3485.2455.0538.5

cof:GrossUnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4514314408685130107114208213285
Percentage of UnrecognizedTaxBenefits980.41390.31257.1296.6354.2393.9297.2292.3385.2355.0438.5

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
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
Value29622324522617916614813912389130109
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:AmortizationOfBasisAdjustment

cof:AmortizationOfBasisAdjustment


Amortization
Period End2021-06-302021-03-312020-06-302020-03-31
Value-22.0-22.01736
Percentage of AmortizationOfBasisAdjustment100.0100.0100.0100.0

cof:Amortizationofbasisadjustment

cof:Amortizationofbasisadjustment


Amortizationofbasisadjustment
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value46191736-6.060566150191610.0
Percentage of Amortizationofbasisadjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:FairValueAssetsMeasureonRecurringBasisUnrealizedGainLossinOCI us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

cof:FairValueAssetsMeasureonRecurringBasisUnrealizedGainLossinOCI

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1.0-2.0-5.05.036-52.0-15.01.03.010.0
Percentage of FairValueAssetsMeasureonRecurringBasisUnrealizedGainLossinOCI100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:FinancingReceivableAllowanceForCreditLossAdjustmentsOther us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cof:FinancingReceivableAllowanceForCreditLossAdjustmentsOther

cof:CreditCardPortfolioSegment, us-gaap:AllowanceForLoanAndLeaseLosses


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value7.06.0281412-18.018-8.0-1.0
Percentage of FinancingReceivableAllowanceForCreditLossAdjustmentsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:FinancingReceivableAllowanceForCreditLossAdjustmentsOther us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:AllowanceForLoanAndLeaseLosses


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value7.06.0281412-18.018-8.0-1.0
Percentage of FinancingReceivableAllowanceForCreditLossAdjustmentsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:FinancingReceivableModificationsAverageRateReduction us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanRestructuringModification

cof:FinancingReceivableModificationsAverageRateReduction

us-gaap:CommercialPortfolioSegment, cof:CommercialAndIndustrial, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value000.14000-0.00270.0100-0.001600.020-0.00010.00240.02230.003100.00150.00060-0.003900.01140.02020.01480.00850
Percentage of FinancingReceivableModificationsAverageRateReduction0.00.0100.00.00.00.0100.0100.00.00.0100.00.0100.00.0100.0100.0100.0100.00.0100.0100.00.0100.00.0100.0100.0100.0100.00.0

us-gaap:CommercialPortfolioSegment, cof:CommercialAndMultifamilyRealEstate, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value000000000000000000.0025000000000.000500
Percentage of FinancingReceivableModificationsAverageRateReduction0.00.00.00.00.00.0-0.00.00.00.0-0.00.00.00.0-0.00.00.080.60.00.00.00.0-0.00.00.00.03.40.00.0

us-gaap:ConsumerPortfolioSegment, cof:RetailBanking, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value00.013.240.08370.125-0.00070.0930.10550.1301-0.00170.10450.11560.10220.00210.0930.0010.03-0.00010.10440.0410.063-0.00310.06150.06930.0936-0.00960.06420.0757
Percentage of FinancingReceivableModificationsAverageRateReduction0.07.10.00.00.025.9930.00.00.0106.20.0578.00.0-2100.03875.04.5967.70.06960.06833.30.079.50.0607.9463.4-64.9755.30.0

us-gaap:ConsumerPortfolioSegment, us-gaap:AutomobileLoan, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value8.629.022.04.830.04120.0334-0.00070.03510.03780.0383-0.00030.03880.0410.0376-0.00010.03780.03650.04020.00160.03520.03860.03930.00210.04140.04110.01710.00140.0170.0145
Percentage of FinancingReceivableModificationsAverageRateReduction0.00.01428.60.00.00.025.9351.00.00.018.80.0205.00.0100.01575.0163.71296.80.02346.76433.30.0-53.80.0360.584.79.5200.00.0

cof:FinancingReceivableModificationsAverageRateReduction us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LoanRestructuringModification

cof:CreditCardPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value16.0716.120.0215.530.15410.16450.00020.16760.1660.16420.00050.16010.1590.15730.00250.14510.14360.13850.00240.13120.12810.12850.00120.1230.12030.12130.00070.11520.1154
Percentage of FinancingReceivableModificationsAverageRateReduction0.00.014.30.00.00.0-7.41676.00.00.0-31.30.0795.00.0-2500.06045.8643.94467.70.08746.721350.00.0-30.80.01055.3600.54.71355.30.0

cof:CreditCardPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value27.4527.740.0527.890.26560.27320.00030.27080.27250.27590.00090.26950.26790.26860.00050.26710.2650.26180.00010.25910.26010.25660.00010.25890.25950.25790.00040.25410.2546
Percentage of FinancingReceivableModificationsAverageRateReduction0.00.035.70.00.00.0-11.12708.00.00.0-56.30.01339.50.0-500.011129.21188.38445.20.017273.343350.00.0-2.60.02276.31276.72.72989.40.0

cof:FinancingReceivableModificationsAverageRateReduction us-gaap:FinancingReceivablePortfolioSegment, us-gaap:LoanRestructuringModification

cof:CreditCardPortfolioSegment, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value21.2221.580.3920.940.19140.2041-0.00060.20190.20320.20040.00090.19350.19220.19170.00120.17850.18120.1774-0.00090.16690.17470.17520.00050.16010.16250.1639-0.00090.16120.1683
Percentage of FinancingReceivableModificationsAverageRateReduction0.00.0278.60.00.00.022.22019.00.00.0-56.20.0961.00.0-1200.07437.5812.65722.60.011126.729116.70.0-12.80.01425.4811.4-6.11896.50.0

us-gaap:CommercialPortfolioSegment, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value000.14000-0.00030.0100-0.001600.02000.00240.02230.002700.001500-0.003900.01140.02020.00240.00850
Percentage of FinancingReceivableModificationsAverageRateReduction0.00.0100.00.00.00.011.1100.00.00.0100.00.0100.00.0-0.0100.0100.087.10.0100.00.00.0100.00.0100.0100.016.2100.00.0

us-gaap:ConsumerPortfolioSegment, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value8.629.021.974.750.04190.0336-0.00080.03530.03930.0388-0.00010.03930.04220.03710.00020.03880.03540.03780.00110.03410.03640.03720.00130.03810.04030.02360.00090.01880.0162
Percentage of FinancingReceivableModificationsAverageRateReduction0.00.01407.10.00.00.029.6353.00.00.06.20.0211.00.0-200.01616.7158.71219.40.02273.36066.70.0-33.30.0353.5116.86.1221.20.0

cof:FinancingReceivableModificationsAverageRateReduction us-gaap:LoanRestructuringModification

us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value9.3833.62-0.4320.080.17960.17870.00290.1670.17450.14640.00050.17260.16630.1650.00150.11910.13350.14140.00250.12550.10820.13210.00020.12130.12980.1219-0.00170.11940.1373
Percentage of FinancingReceivableModificationsAverageRateReduction0.00.0-307.10.00.00.0-107.41670.00.00.0-31.30.0831.50.0-1500.04962.5598.74561.30.08366.718033.30.0-5.10.01138.6603.5-11.51404.70.0

cof:FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoanRestructuringModification

cof:FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity

us-gaap:CommercialPortfolioSegment, cof:CommercialAndIndustrial, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value004.0000-0.020.090000000.040.240.180.01-0.010.010.1200000-0.170.960
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.0100.00.00.00.0100.0100.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.0100.00.0

us-gaap:CommercialPortfolioSegment, cof:CommercialAndIndustrial, us-gaap:ExtendedMaturity


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value56.025.0054.00.520-0.050.151.000.070.130.611.000.960.470.190.030.490.640.3-0.140.210.980.03-0.051.00.57
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.00.00.00.0250.0166.70.00.00.00.00.00.00.0400.0261.11900.0-300.04900.0533.30.00.00.00.00.029.4104.20.0

us-gaap:CommercialPortfolioSegment, cof:CommercialAndIndustrial, us-gaap:PrincipalForgiveness


Financing
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value000.090000000000-0.020.19000000-0.010.110
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.0-0.00.00.00.00.00.00.00.00.00.0200.01900.00.00.00.00.00.00.05.911.50.0

us-gaap:CommercialPortfolioSegment, cof:CommercialAndMultifamilyRealEstate, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value000000-0.13001.000000001.0000000000.0400
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.00.00.00.0650.00.00.00.00.00.00.00.00.00.00.010000.0-0.00.00.00.00.00.00.00.0-23.50.00.0

us-gaap:CommercialPortfolioSegment, cof:CommercialAndMultifamilyRealEstate, us-gaap:ExtendedMaturity


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value0100.0-14.0100.01.01.00.130000.010.611.01.001.00.11.00001.000.8301.00.0100
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.0-350.00.00.00.0-650.00.00.00.00.00.00.00.00.0416.755.610000.0-0.00.00.00.00.00.00.00.0-5.90.00.0

us-gaap:CommercialPortfolioSegment, cof:CommercialAndMultifamilyRealEstate, us-gaap:PrincipalForgiveness


Financing
Period End2020-12-312020-09-302020-06-302019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value00000000000000.9700001.00.77001.0
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.0-0.00.00.00.00.00.00.00.00.0-0.09700.00.00.00.00.00.00.0-0.00.00.0

us-gaap:ConsumerPortfolioSegment, cof:RetailBanking, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value02.085.00.10.010.010.090.090.150.021.00.120.110.010.130.180.500.110.470.21-0.010.060.030.610.020.170.05
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.050.00.00.00.0-50.0100.00.00.00.00.00.00.025.054.2100.05000.0-0.01100.0391.70.00.00.00.00.0-11.817.70.0

us-gaap:ConsumerPortfolioSegment, cof:RetailBanking, us-gaap:ExtendedMaturity


Financing
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value100.05.015.00.590000.570.85-0.050.050.340.8100.820.590.650.030.610.580.87-0.010.940.760.91-0.050.880.95
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.0125.00.00.00.0-0.00.00.00.00.00.00.00.00.0341.7327.86500.0-300.06100.0483.30.00.00.00.00.029.491.70.0

us-gaap:ConsumerPortfolioSegment, cof:RetailBanking, us-gaap:PrincipalForgiveness


Financing
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value000-0.01000000000-0.0200.3500000000
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.050.00.00.00.00.00.00.00.00.00.0200.00.0291.70.00.00.00.00.0-0.00.00.0

us-gaap:ConsumerPortfolioSegment, us-gaap:AutomobileLoan, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value39.035.02.03.00.050.2-0.020.420.460.37-0.060.510.640.5200.350.520.52-0.010.470.460.4200.420.40.410.020.40.32
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.050.00.00.00.0100.0466.70.00.00.00.00.00.00.0145.8288.95200.0100.04700.0383.30.00.00.00.00.0-11.841.70.0

us-gaap:ConsumerPortfolioSegment, us-gaap:AutomobileLoan, us-gaap:ExtendedMaturity


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value91.095.0094.00.950.9400.890.890.910.020.850.850.91-0.010.990.990.8900.750.750.7300.680.680.710.020.640.58
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.00.00.00.0-0.0988.90.00.00.00.00.00.0-25.0412.5550.08900.0-0.07500.0625.00.00.00.00.00.0-11.866.70.0

us-gaap:ConsumerPortfolioSegment, us-gaap:AutomobileLoan, us-gaap:PrincipalForgiveness


Financing
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value00000.0100.010.010-0.01000.100.240.250.2700.310.310.28-0.020.350.41
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.0-0.011.10.00.00.00.0-25.00.00.01000.0-0.02400.0208.30.00.00.00.00.011.836.50.0

cof:FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity us-gaap:FinancingReceivablePortfolioSegment, us-gaap:GeographicDistribution, us-gaap:LoanRestructuringModification

cof:CreditCardPortfolioSegment, us-gaap:GeographicDistributionDomestic, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value100.0100.00100.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.0
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.00.00.00.0-0.01111.10.00.00.00.00.00.00.0416.7555.610000.0-0.010000.0833.30.00.00.00.00.0-0.0104.20.0

cof:CreditCardPortfolioSegment, us-gaap:GeographicDistributionForeign, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value100.0100.00100.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.0
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.00.00.00.0-0.01111.10.00.00.00.00.00.00.0416.7555.610000.0-0.010000.0833.30.00.00.00.00.0-0.0104.20.0

cof:FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity us-gaap:FinancingReceivablePortfolioSegment, us-gaap:LoanRestructuringModification

cof:CreditCardPortfolioSegment, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value100.0100.00100.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.0
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.00.00.00.0-0.01111.10.00.00.00.00.00.00.0416.7555.610000.0-0.010000.0833.30.00.00.00.00.0-0.0104.20.0

us-gaap:CommercialPortfolioSegment, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value003.0000-0.130.0900.6100000.030.240.150.02-0.010.010.1200000-0.110.710
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.075.00.00.00.0650.0100.00.00.00.00.00.00.075.0100.083.3200.0100.0100.0100.00.00.00.00.00.064.774.00.0

us-gaap:CommercialPortfolioSegment, us-gaap:ExtendedMaturity


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value56.048.0-3.064.00.550.7300.150.9800.060.280.670.8500.960.410.20.020.470.640.54-0.170.40.970.13-0.120.740.39
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.0-75.00.00.00.0-0.0166.70.00.00.00.00.00.00.0400.0227.82000.0-200.04700.0533.30.00.00.00.00.070.677.10.0

us-gaap:CommercialPortfolioSegment, us-gaap:PrincipalForgiveness


Financing
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value000.080000000000-0.020.2300-0.01000.08-0.020.080.24
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.0-0.00.00.00.00.00.00.00.00.00.0200.02300.00.00.00.00.00.00.011.88.30.0

us-gaap:ConsumerPortfolioSegment, us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value38.035.02.04.00.050.2-0.020.420.420.37-0.050.520.60.4900.330.490.5300.470.470.4400.430.370.440.010.40.32
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.050.00.00.00.0100.0466.70.00.00.00.00.00.00.0137.5272.25300.0-0.04700.0391.70.00.00.00.00.0-5.941.70.0

us-gaap:ConsumerPortfolioSegment, us-gaap:ExtendedMaturity


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value91.095.0094.00.950.9200.880.860.910.010.850.810.9-0.010.970.960.8700.750.770.7400.730.670.720.020.630.56
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.00.00.00.0-0.0977.80.00.00.00.00.00.0-25.0404.2533.38700.0-0.07500.0641.70.00.00.00.00.0-11.865.60.0

us-gaap:ConsumerPortfolioSegment, us-gaap:PrincipalForgiveness


Financing
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value00000.0100.010.010-0.01000.0900.20.220.2300.250.290.24-0.010.310.34
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.0-0.011.10.00.00.00.0-25.00.00.0900.0-0.02000.0183.30.00.00.00.00.05.932.30.0

cof:FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity us-gaap:LoanRestructuringModification

us-gaap:ContractualInterestRateReduction


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value53.047.04.019.00.220.56-0.050.650.750.750.010.650.580.80.040.50.520.50.010.350.380.52-0.080.620.60.65-0.050.70.64
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.0100.00.00.00.0250.0722.20.00.00.00.00.00.0100.0208.3288.95000.0-100.03500.0316.70.00.00.00.00.029.472.90.0

us-gaap:ExtendedMaturity


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value49.054.0-1.061.00.570.4600.270.340.240.020.220.370.3-0.010.660.370.2800.420.530.42-0.020.380.420.330.020.320.26
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.0-25.00.00.00.0-0.0300.00.00.00.00.00.00.0-25.0275.0205.62800.0-0.04200.0441.70.00.00.00.00.0-11.833.30.0

us-gaap:PrincipalForgiveness


Financing
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value000.04-0.01000000000.02-0.020.170.050.08-0.020.110.120.12-0.010.150.16
Percentage of FinancingReceivableModificationsPercentageofTroubledDebtRestructuringActivity0.00.00.050.00.00.00.00.00.00.00.00.0200.0200.01700.041.70.00.00.00.00.05.915.60.0

cof:GainLossOnCashFlowHedgesRecognizedInEarnings us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation

cof:GainLossOnCashFlowHedgesRecognizedInEarnings

us-gaap:CashFlowHedging, cof:InterestincomeInvestmentsecurities


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value119.08.08.07.02.00.0-1.0-3.0-4.00.0-5.0-2.0-2.0
Percentage of GainLossOnCashFlowHedgesRecognizedInEarnings100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:CashFlowHedging, cof:InterestincomeLoans


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value23422621117113524-5.0-43.0-59.0-56.0-42.0-31.0-17.08.0
Percentage of GainLossOnCashFlowHedgesRecognizedInEarnings2127.32511.12637.52137.51928.61200.00.04300.01966.71400.00.0620.0850.0-400.0

us-gaap:CashFlowHedging, cof:InterestincomeOther


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.01.00.01.02.07.07.01213121414118.0
Percentage of GainLossOnCashFlowHedgesRecognizedInEarnings0.011.10.012.528.6350.00.0-1200.0-433.3-300.00.0-280.0-550.0-400.0

us-gaap:CashFlowHedging, cof:NonInterestIncomeOther


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-30
Value1.00.01.00.0-2.00.0-1.01.0-1.0-1.00.0
Percentage of GainLossOnCashFlowHedgesRecognizedInEarnings9.10.012.50.0-28.60.00.0-100.033.30.0-0.0

cof:GainLossOnFairValueAssetsRecognizedInEarnings us-gaap:FairValueByMeasurementFrequency

cof:GainLossOnFairValueAssetsRecognizedInEarnings

us-gaap:FairValueMeasurementsNonrecurring


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302010-09-30
Value-106.0-52.0-32.0420-24.0-251.0-94.0-60.0-65.0-125.02.0-46.0-28.0-87.0-19.09.0
Percentage of GainLossOnFairValueAssetsRecognizedInEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:GainLossOnFairValueLoansHeldForInvestmentRecognizedInEarnings us-gaap:FairValueByMeasurementFrequency

cof:GainLossOnFairValueLoansHeldForInvestmentRecognizedInEarnings

us-gaap:FairValueMeasurementsNonrecurring


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302010-09-30
Value-81.0-16.011440-46.0-207.0-79.0-57.0-57.0-75.014-34.011-76.0-18.017
Percentage of GainLossOnFairValueLoansHeldForInvestmentRecognizedInEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:GainLossOnFairValueLoansHeldForSaleRecognizedInEarnings us-gaap:FairValueByMeasurementFrequency

cof:GainLossOnFairValueLoansHeldForSaleRecognizedInEarnings

us-gaap:FairValueMeasurementsNonrecurring


Gain
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312011-09-302010-09-30
Value0.00.00.00.00.0-1.0-2.0-3.00.03.0-1.0
Percentage of GainLossOnFairValueLoansHeldForSaleRecognizedInEarnings0.00.00.00.00.0100.0100.0100.00.0100.0100.0

cof:GainLossOnFairValueOtherAssetsRecognizedInEarnings us-gaap:FairValueByMeasurementFrequency

cof:GainLossOnFairValueOtherAssetsRecognizedInEarnings

us-gaap:FairValueMeasurementsNonrecurring


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-09-302010-09-30
Value-25.0-36.0-43.0-20.022-44.0-16.0-3.0-8.0-49.0-17.0-10.0-36.0-11.00.02.0
Percentage of GainLossOnFairValueOtherAssetsRecognizedInEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

cof:GainOrLossOnFairValueHedgesRecognizedInNetInterestIncome us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation

cof:GainOrLossOnFairValueHedgesRecognizedInNetInterestIncome

us-gaap:InterestRateContract, us-gaap:FairValueHedging, cof:InterestexpenseDeposits


Gain
Period End2021-06-302020-06-30
Value3427
Percentage of GainOrLossOnFairValueHedgesRecognizedInNetInterestIncome100.0100.0

us-gaap:InterestRateContract, us-gaap:FairValueHedging, cof:InterestexpenseSecuritizedDebtObligation


Gain
Period End2021-06-302020-06-30
Value3040
Percentage of GainOrLossOnFairValueHedgesRecognizedInNetInterestIncome88.2148.1

us-gaap:InterestRateContract, us-gaap:FairValueHedging, cof:InterestexpenseSeniorandSubordinatedDebt


Gain
Period End2021-06-302020-06-30
Value5671
Percentage of GainOrLossOnFairValueHedgesRecognizedInNetInterestIncome164.7263.0

us-gaap:InterestRateContract, us-gaap:FairValueHedging, cof:InterestincomeInvestmentsecurities


Gain
Period End2021-06-302020-06-30
Value-25.0-17.0
Percentage of GainOrLossOnFairValueHedgesRecognizedInNetInterestIncome-73.5-63.0

cof:GainorLossonFairValueHedgesRecognizedinNetInterestIncome us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation

cof:GainorLossonFairValueHedgesRecognizedinNetInterestIncome

us-gaap:InterestRateContract, us-gaap:FairValueHedging, cof:InterestexpenseDeposits


Gainor
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value36394427-2.0-13.0-26.0-33.0-36.0-28.0-25.0-21.0-2.0
Percentage of GainorLossonFairValueHedgesRecognizedinNetInterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestRateContract, us-gaap:FairValueHedging, cof:InterestexpenseSecuritizedDebtObligation


Gainor
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value33334040123.0-5.0-6.0-6.0-9.0-21.0-18.0-5.0
Percentage of GainorLossonFairValueHedgesRecognizedinNetInterestIncome91.784.690.9148.1-600.0-23.119.218.216.732.184.085.7250.0

us-gaap:InterestRateContract, us-gaap:FairValueHedging, cof:InterestexpenseSeniorandSubordinatedDebt


Gainor
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value625956713918-3.0-10.0-11.0-4.0-8.04.010.0
Percentage of GainorLossonFairValueHedgesRecognizedinNetInterestIncome172.2151.3127.3263.0-1950.0-138.511.530.330.614.332.0-19.0-500.0

us-gaap:InterestRateContract, us-gaap:FairValueHedging, cof:InterestincomeInvestmentsecurities


Gainor
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-25.0-25.0-23.0-17.0-11.0-10.0-3.0-1.02.0-1.0-5.0-9.0-8.0
Percentage of GainorLossonFairValueHedgesRecognizedinNetInterestIncome-69.4-64.1-52.3-63.0550.076.911.53.0-5.63.620.042.9400.0

cof:IncreaseDecreaseinAllowanceforCreditLoss us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

cof:IncreaseDecreaseinAllowanceforCreditLoss

us-gaap:AllowanceForLoanAndLeaseLosses


Increase
Period End2021-06-302021-03-312020-12-31
Value-1700.0-1500.0-500.0
Percentage of IncreaseDecreaseinAllowanceforCreditLoss100.0100.0100.0

cof:InterchangeFeesNet

cof:InterchangeFeesNet


Interchange
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1016817818775672752811790820758743714723643665662676570637603616596617555567496523523535440489476
Percentage of InterchangeFeesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:InterestExpenseOtherBorrowings

cof:InterestExpenseOtherBorrowings


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
Value9.09.09.09.0111518151127371310.02234311225273428241412121511168.01213111217968886868685808681858693
Percentage of InterestExpenseOtherBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:InterestExpenseSecuredDebt

cof:InterestExpenseSecuredDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value283234435699118123139143138127124107918582696556474843393633363239384042
Percentage of InterestExpenseSecuredDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:InterestExpenseUnsecuredDebt

cof:InterestExpenseUnsecuredDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value12212912813218023923629931031429728828925120919417914913812111110689828079737178777576
Percentage of InterestExpenseUnsecuredDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:IssuanceCostForPreferredStockRedeemed

cof:IssuanceCostForPreferredStockRedeemed


Issuance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.0170.00.022310.00.00.0
Percentage of IssuanceCostForPreferredStockRedeemed0.00.0100.00.00.0100.0100.00.00.00.0

cof:LitigationSettlementAmountAttributabletoReportingEntityandThirdParty us-gaap:LitigationCase, us-gaap:LitigationStatus

cof:LitigationSettlementAmountAttributabletoReportingEntityandThirdParty

cof:InterchangeLitigation, us-gaap:PendingLitigation


Litigation
Period End2021-06-302021-03-312020-12-31
Value0.055000.0
Percentage of LitigationSettlementAmountAttributabletoReportingEntityandThirdParty0.0100.00.0

cof:LitigationSettlementAmountPaidFromReserveToOtherParty us-gaap:LitigationCase, us-gaap:SubsequentEventType

cof:LitigationSettlementAmountPaidFromReserveToOtherParty

cof:AntiMoneyLaundering, us-gaap:SubsequentEvent


Litigation
Period End2021-01-31
Value290
Percentage of LitigationSettlementAmountPaidFromReserveToOtherParty100.0

cof:NoninterestIncomeExcludingRevenueFromContractWithCustomer

cof:NoninterestIncomeExcludingRevenueFromContractWithCustomer


Noninterest
Period End2021-06-302020-06-30
Value390291
Percentage of NoninterestIncomeExcludingRevenueFromContractWithCustomer100.0100.0

cof:NoninterestIncomeExcludingRevenueFromContractWithCustomer us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Noninterest
Period End2021-06-302020-06-30
Value-23.0-24.0
Percentage of NoninterestIncomeExcludingRevenueFromContractWithCustomer-5.9-8.2

cof:NoninterestIncomeExcludingRevenueFromContractWithCustomer us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cof:CommercialBankingSegment


Noninterest
Period End2021-06-302020-06-30
Value166124
Percentage of NoninterestIncomeExcludingRevenueFromContractWithCustomer42.642.6

us-gaap:OperatingSegments, cof:ConsumerBankingSegment


Noninterest
Period End2021-06-302020-06-30
Value1315
Percentage of NoninterestIncomeExcludingRevenueFromContractWithCustomer3.35.2

us-gaap:OperatingSegments, cof:CreditCardSegment


Noninterest
Period End2021-06-302020-06-30
Value234176
Percentage of NoninterestIncomeExcludingRevenueFromContractWithCustomer60.060.5

cof:NoninterestIncomeExcludingRevenuefromContractwithCustomer

cof:NoninterestIncomeExcludingRevenuefromContractwithCustomer


Noninterest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value290451844291287346280409398306318759387
Percentage of NoninterestIncomeExcludingRevenuefromContractwithCustomer100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:NoninterestIncomeExcludingRevenuefromContractwithCustomer us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Noninterest
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-119.07.0468-24.0-50.0-42.0-32.0-24.0-4.0-9.0-60.0375-27.0
Percentage of NoninterestIncomeExcludingRevenuefromContractwithCustomer-41.01.655.5-8.2-17.4-12.1-11.4-5.9-1.0-2.9-18.949.4-7.0

cof:NoninterestIncomeExcludingRevenuefromContractwithCustomer us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, cof:CommercialBanking


Noninterest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value169124191174170158151124148166148
Percentage of NoninterestIncomeExcludingRevenuefromContractwithCustomer20.042.666.650.360.738.637.940.546.521.938.2

us-gaap:OperatingSegments, cof:CommercialBankingSegment


Noninterest
Period End2021-03-312020-03-31
Value172191
Percentage of NoninterestIncomeExcludingRevenuefromContractwithCustomer59.366.6

us-gaap:OperatingSegments, cof:ConsumerBanking


Noninterest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.015-7.01.09.014150.0-8.05.05.0
Percentage of NoninterestIncomeExcludingRevenuefromContractwithCustomer0.75.2-2.40.33.23.43.80.0-2.50.71.3

us-gaap:OperatingSegments, cof:ConsumerBankingSegment


Noninterest
Period End2021-03-312020-03-31
Value21-7.0
Percentage of NoninterestIncomeExcludingRevenuefromContractwithCustomer7.2-2.4

us-gaap:OperatingSegments, cof:CreditCardSegment


Noninterest
Period End2021-03-312020-03-31
Value216153
Percentage of NoninterestIncomeExcludingRevenuefromContractwithCustomer74.553.3

us-gaap:OperatingSegments, us-gaap:CreditCard


Noninterest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value201176153213133261236191238213261
Percentage of NoninterestIncomeExcludingRevenuefromContractwithCustomer23.860.553.361.647.563.859.362.474.828.167.4

cof:OtherComprehensiveIncomeLossBeforeTaxAttributableToParent

cof:OtherComprehensiveIncomeLossBeforeTaxAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.0-1.06.0-2.00.00.022-2.0-1.0-2.0-12.0-1.0-1.0-1.0197.05.07.09.06.012-17.05.0-15.00.0-4.0-20.06.0-3.0-1.043-1.0
Percentage of OtherComprehensiveIncomeLossBeforeTaxAttributableToParent0.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

cof:OtherComprehensiveIncomeLossOtherTaxAttributableToParent

cof:OtherComprehensiveIncomeLossOtherTaxAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.00.01.00.00.00.05.00.0-1.00.0-3.00.0-1.00.07.03.02.02.04.02.04.0-6.02.0-5.00.0-2.0-7.01.0-2.00.0180.0
Percentage of OtherComprehensiveIncomeLossOtherTaxAttributableToParent0.00.0100.00.00.00.0100.00.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.00.0

cof:OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentBeforeTaxPortionAttributableToParent

cof:OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentBeforeTaxPortionAttributableToParent


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.00.00.00.010.010.09.07.09.010.010.05593740373646444133374140333535332830-1465.0
Percentage of OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentBeforeTaxPortionAttributableToParent0.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentNetOfTaxPortionAttributableToParent

cof:OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.00.00.00.06.08.06.06.06.08.08.04252526232330282521242527202022211318-915.0
Percentage of OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentNetOfTaxPortionAttributableToParent0.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentTaxPortionAttributableToParent

cof:OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentTaxPortionAttributableToParent


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.00.00.00.04.02.03.01.03.02.02.01341214141316161612131613131513121512-550.0
Percentage of OtherComprehensiveIncomeLossSecuritiesTransferredToHeldToMaturityAdjustmentTaxPortionAttributableToParent0.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent

cof:OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.0-1.05.0-2.00.00.017-2.00.0-2.0-9.0-1.00.0-1.0124.03.05.05.04.08.0-11.03.0-10.00.0-2.0-13.05.0-1.0-1.025-1.0
Percentage of OtherComprehensiveIncomeOtherNetOfTaxAttributableToParent0.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

cof:ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic

cof:ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic


Participating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value302815201.03.07.010.012128.09.01210.0-8.08.08.05.06.06.06.06.04.06.04.06.04.05.04.05.04.05.04.05.0
Percentage of ParticipatingSecuritiesDistributedandUndistributedEarningsLossexcludingPreferredStockDividendsBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:PaymentsForProceedsFromSaleOfFinancingReceivableHeldForInvestment

cof:PaymentsForProceedsFromSaleOfFinancingReceivableHeldForInvestment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value12215-7055.04947714-9111.0-686.010725
Percentage of PaymentsForProceedsFromSaleOfFinancingReceivableHeldForInvestment100.0100.0100.0100.0100.0100.0100.0

cof:PaymentsForRedemptionOfPreferredStock

cof:PaymentsForRedemptionOfPreferredStock


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5000.00.087510000.00.00.0
Percentage of PaymentsForRedemptionOfPreferredStock100.00.00.0100.0100.00.00.00.0

cof:ProceedsfromIssuanceofUnsecuredDebtandLongTermFHLBAdvancesNetofIssuanceCost

cof:ProceedsfromIssuanceofUnsecuredDebtandLongTermFHLBAdvancesNetofIssuanceCost


Proceedsfrom
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.00.0199219950.01496140312430.0750199332347642159197881398426045430860063501729414941005429881.02982
Percentage of ProceedsfromIssuanceofUnsecuredDebtandLongTermFHLBAdvancesNetofIssuanceCost0.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:RealizedGainsLossesonForeignExchangeContractsReclassifiedfromAOCI us-gaap:IncomeStatementLocation

cof:RealizedGainsLossesonForeignExchangeContractsReclassifiedfromAOCI

cof:NonInterestIncomeOther


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-77.0-85.0-37.073299-392.0-565.0-71.0123
Percentage of RealizedGainsLossesonForeignExchangeContractsReclassifiedfromAOCI100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:RepaymentsofUnsecuredDebtandLongTermFHLBAdvances

cof:RepaymentsofUnsecuredDebtandLongTermFHLBAdvances


Repaymentsof
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value585150010000.0565615000.028447512000120517511.011206968349316213157271769700013511405011365802139112500.01001
Percentage of RepaymentsofUnsecuredDebtandLongTermFHLBAdvances100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

cof:ServiceChargesandOtherCustomerRelatedFees

cof:ServiceChargesandOtherCustomerRelatedFees


Service
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value384352338320258327342283352353352410391432394414418371484387371404426423429437462471460474504530
Percentage of ServiceChargesandOtherCustomerRelatedFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures

cof:StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value60606358635546523847414940453841323534302731292427
Percentage of StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value60606358635546523847414940453841323534292731292427
Percentage of StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.096.7100.0100.0100.0100.0100.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.01.00.00.00.00.00.0
Percentage of StockIssuedDuringPeriodValueNewIssuesandRestrictedStockNetofForfeitures0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.03.30.00.00.00.00.0

cof:StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercisedAndRestrictedStockVesting

cof:StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercisedAndRestrictedStockVesting


Stock
Period End2021-06-302021-03-312020-06-302020-03-31
Value15190.020
Percentage of StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercisedAndRestrictedStockVesting100.0100.00.0100.0

cof:StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercisedAndRestrictedStockVesting us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-06-302020-03-31
Value15190.020
Percentage of StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercisedAndRestrictedStockVesting100.0100.00.0100.0

cof:StockIssuedDuringPeriodValueStockOptionsandWarrantsExercisedandRestrictedStockVesting

cof:StockIssuedDuringPeriodValueStockOptionsandWarrantsExercisedandRestrictedStockVesting


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value191.00.0200.00.00.00.0186.01422211665130-15.0-2.0-11.01.0144610.057
Percentage of StockIssuedDuringPeriodValueStockOptionsandWarrantsExercisedandRestrictedStockVesting100.0100.00.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:StockIssuedDuringPeriodValueStockOptionsandWarrantsExercisedandRestrictedStockVesting us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value191.00.0200.00.00.00.0186.01422211665130-15.0-2.0-11.01.0144610.057
Percentage of StockIssuedDuringPeriodValueStockOptionsandWarrantsExercisedandRestrictedStockVesting100.0100.00.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

cof:TransferOfToPortfolioFinancingReceivablesToFromHeldForSale

cof:TransferOfToPortfolioFinancingReceivablesToFromHeldForSale


Transfer
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value441516019220937-73.095
Percentage of TransferOfToPortfolioFinancingReceivablesToFromHeldForSale100.0100.0100.0100.0100.0100.0100.0

cof:UncollectiblePortionofBilledFinanceChargesandFees

cof:UncollectiblePortionofBilledFinanceChargesandFees


Uncollectible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value175180158235318389
Percentage of UncollectiblePortionofBilledFinanceChargesandFees100.0100.0100.0100.0100.0100.0

us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount

us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount


Affordable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value165258560-575.04671559416118417161147175146116150124114108108115113-5.0196891026890
Percentage of AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization

us-gaap:AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value16115612814314613913713813614311211512612423511711511598999898808586867487
Percentage of AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths


Cash
Period End2021-06-302021-03-312020-12-31
Value-1082.05758.0
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths100.0100.0100.0

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations

us-gaap:CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-2.0-1.02.00.00.01.07.00.00.00.0-6.00.0-302.0-59.011-11.0-1.0121.013-15.0-129.0111-46.0-226.06919-49.036-4.0-179.0-108.0-18.0-43.0-131.015215312227335-1.00.019
Percentage of CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations100.0100.0100.00.00.0100.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1 us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation

us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1

us-gaap:InterestRateContract, us-gaap:FairValueHedging, cof:InterestexpenseDeposits


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-31.0-58.0-45.0-47.09.0287-32.04615495151-14.0-37.0-160.0
Percentage of ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestRateContract, us-gaap:FairValueHedging, cof:InterestexpenseSecuritizedDebtObligation


Change</