KMX


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

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfRevenue
us-gaap:ConcentrationRiskByBenchmark

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestExpense

us-gaap:InterestIncomeExpenseNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NonoperatingIncomeExpense

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService

us-gaap:Revenues
us-gaap:ConcentrationRiskByBenchmark

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:DebtCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:LongTermDebt
us-gaap:LongtermDebtType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanType

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

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:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

kmx:FinanceLeaseCost
us-gaap:ConcentrationRiskByBenchmark
kmx:ItemAsPercentOfNetSalesAndOperatingRevenues
us-gaap:ConcentrationRiskByBenchmark, us-gaap:IncomeStatementLocation
us-gaap:ConcentrationRiskByBenchmark
kmx:ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly

kmx:NetIncomeLossFromFinancing

kmx:PaymentsOnNonRecourseDebt

kmx:PaymentsOnRevolvingLineOfCreditAndLongTermDebt

kmx:ProceedsFromIssuanceOfNonRecourseDebt

kmx:ProceedsFromRevolvingLineOfCreditAndLongTermDebt

kmx:ProvisionForContractCancellationReserves

kmx:RepaymentsOfLongTermFinanceAndCapitalLeaseObligations
us-gaap:AwardType
kmx:SharebasedCompensationArrangementbySharebasedPaymentAwardPaymentsUponVesting

kmx:Totalaveragemanagedreceivables
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
kmx:WarehouseFacilityCapacityIncrease

us-gaap:AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument, us-gaap:HedgingDesignation
us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

us-gaap:DepreciationAndAmortization
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument, us-gaap:HedgingDesignation
us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:DirectOperatingCosts
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinancingInterestExpense

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:GainLossOnDispositionOfAssets

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInFinanceReceivables

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestPaidCapitalized

us-gaap:LaborAndRelatedExpense

us-gaap:LeaseCost

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherNonoperatingExpense

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:ProceedsFromIssuanceOrSaleOfEquity

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
us-gaap:AwardType
us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProvisionForLoanAndLeaseLosses

us-gaap:ProvisionForLoanLeaseAndOtherLosses
kmx:Provisionbreakout

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised
us-gaap:AwardType
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue
us-gaap:StatementEquityComponents
us-gaap:AwardType
us-gaap:TreasuryStockAcquiredAverageCostPerShare
us-gaap:AwardType
us-gaap:TreasuryStockSharesAcquired

us-gaap:ValuationAllowancesAndReservesChargedToCostAndExpense

us-gaap:ValuationAllowancesAndReservesDeductions

dei:EntityCommonStockSharesOutstanding

dei:EntityPublicFloat

kmx:AccumulatedOtherComprehensiveIncomeLossDeferredTaxes

kmx:CancellationReservesCurrentPortion

kmx:DeferredTaxAssetsLeasingArrangements

kmx:FinanceLeaseAccumulatedDepreciation

kmx:FinancingObligationPaymentsDueNextFiscalYear

kmx:FinancingObligationPaymentsDueYearTwo

kmx:FinancingObligations

kmx:FinancingObligationsPaymentsDue

kmx:FinancingObligationsPaymentsDueAfterYearFive

kmx:FinancingObligationsPaymentsDueYearFive

kmx:FinancingObligationsPaymentsDueYearFour

kmx:FinancingObligationsPaymentsDueYearThree

kmx:FinancingObligationsUndiscountedExcessAmount
us-gaap:ValuationAllowancesAndReservesType
kmx:ItemAsPercentOfTotalEndingManagedReceivables

kmx:ItemAsPercentageOfTotalAssets
us-gaap:FairValueByFairValueHierarchyLevel

kmx:ItemAsPercentageOfTotalAssetsAtFairValue
us-gaap:FairValueByFairValueHierarchyLevel

kmx:ItemAsPercentageOfTotalLiabilities
us-gaap:FairValueByFairValueHierarchyLevel

kmx:LesseeLeaseNotYetCommencedAmount

kmx:NonRecourseDebtCurrent

kmx:NonRecourseDebtNonCurrent

kmx:PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables
us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:Range
kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVesting
us-gaap:Range
kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInNextFiscalYear
us-gaap:Range
kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInThreeYears
us-gaap:Range
kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInTwoYears
us-gaap:InternalCreditAssessment
kmx:TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade

kmx:Totalleaseassets

kmx:Totalleaseliabilities
us-gaap:DebtInstrument
kmx:WarehouseFacilitiesMaximumBorrowingCapacity

us-gaap:AccruedEmployeeBenefitsCurrent

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashCashEquivalentsAndShortTermInvestments

us-gaap:DebtInstrumentFairValue
us-gaap:DebtInstrument
us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount

us-gaap:DebtLongtermAndShorttermCombinedAmount
us-gaap:DebtInstrument
us-gaap:DebtWeightedAverageInterestRate

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsDerivativeInstruments

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsInvestmentInSubsidiaries

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear

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

us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:DerivativeAssets
us-gaap:HedgingDesignation
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation
us-gaap:DerivativeLiabilities
us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument, us-gaap:HedgingDesignation
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

us-gaap:EquityMethodInvestmentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableRecordedInvestmentPastDue
us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment

us-gaap:InterestReceivable

us-gaap:InvestmentsAndOtherNoncurrentAssets

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:DebtInstrument

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
us-gaap:DebtInstrument
us-gaap:LongTermDebtPercentageBearingVariableInterestRate

us-gaap:NonRecourseDebt
us-gaap:DebtInstrument

us-gaap:NotesAndLoansReceivableGrossCurrent
us-gaap:InternalCreditAssessment

us-gaap:NotesReceivableGross
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:InternalCreditAssessment

us-gaap:NotesReceivableNet

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherLongTermDebtNoncurrent

us-gaap:OtherReceivables

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
us-gaap:RetirementPlanType

us-gaap:PurchaseObligation

us-gaap:PurchaseObligationDueInNextTwelveMonths

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent
us-gaap:DebtInstrument

us-gaap:SeniorNotes
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1

us-gaap:ShortTermBankLoansAndNotesPayable

us-gaap:StandardProductWarrantyAccrual
us-gaap:AwardType
us-gaap:StockRepurchaseProgramAuthorizedAmount1
us-gaap:AwardType
us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:TradingSecurities
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:WorkersCompensationLiabilityCurrent

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Interest Expense
Balance Sheet
Cash And Cash Equivalents At Carrying Value
Assets
Cash And Cash Equivalents At Carrying Value
Current Assets
Other Assets Current
NonCurrent Assets
Deferred Income Tax Assets Net
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Long Term Debt Current
Noncurrent Liabilities
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Payments For Repurchase Of Common Stock
Shares
Common Stock Shares Outstanding
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Interest Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Remainder Of Fiscal Year

Tables

  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:CommonStockValue ▁▁▁▁▁▁▁▁▁▂▂▂▂▃▃▃▃▄▄▄▄▄▅▅▆▆▆▇▇▇▇▇███████████81.40181.58681.51782.08181.37881.54181.89782.44282.69783.73985.89387.64588.3689.87490.74590.95291.93693.27493.67695.5496.24897.35698.781102.465104.341104.435105.459108.352109.242110.843111.614111.665112.073112.953114.108114.222114.153113.559113.237113.213113.018112.943112.752NANA111.533NA
us-gaap:CommonStockSharesOutstanding ▁▁▁▁▁▁▁▁▁▂▂▂▂▃▃▃▃▄▄▄▄▄▅▅▆▆▆▇▇▇▇▇███████████162.802762163.172333163.033971164.162253162.755339163.081376163.795082164.885648165.395165167.478924171.785396175.289632176.719782179.747894181.489439181.903784183.872908186.548602187.35106191.079104192.495265194.712234197.563192204.930606208.682123208.869688210.918281216.70425218.483173221.685984223.22836223.329344224.145439225.906108228.216842228.444532228.305488227.118666226.47342226.426007226.036665225.885693225.504353NANA223.065542NA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 166.295NA165.773165.623163.537NA166.534167.272167.643NA175.321178.2179.421NA184.033184.696186.859NA190.818193.623195.253NA203.383209.648211.652NA217.025221.07223.632NA227.417227.634228.552NA232.656231.696231.802NA230.632230.6810.230278NA228.471226.1320.226179NA223.879
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 163.151NA163.732163.434162.673NA164.273165.354166.324NA173.816176.284178.139NA181.888182.868185.2NA189.2191.539193.531NA201.291207.249208.698NA214.228218.18220.268NA223.259223.61224.618NA228.904228.366227.773NA226.446226.30.22557NA223.953222.8570.222221NA220.204
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 0.28914NA0.1155090.02924.258269NA1.2355751.2884133.083172NA2.8085552.2109173.434764NA2.7127243.1302852.218318NA3.104722.9644942.610461NA1.3838611.3908690.812356NA1.7075812.8859032.420758NA1.3092821.4261630.801614NA3.7943174.2667943.202825NA3.2633353.2550211.187125NA1.5588393.667915NANANA
us-gaap:EarningsPerShareBasic █▄▅▆▁▄▄▅▅▄▄▄▄▃▃▄▄▃▃▃▃▃▃▃▃▃▃▃▃▂▂▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂2.681.291.441.820.031.321.051.411.61.141.091.251.340.680.820.991.140.820.720.850.910.720.640.830.870.680.610.710.770.450.480.630.650.470.410.490.530.420.370.490.560.390.370.480.450.339999999999999970.34
us-gaap:EarningsPerShareDiluted █▄▅▆▁▄▄▅▅▄▄▄▄▃▃▄▄▃▃▃▃▃▃▃▃▃▃▃▃▂▂▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂2.631.26999999999999961.421.790.031.31.041.41.591.131.091.241.330.670.810.981.130.810.720.840.90.710.630.820.860.670.60.70.760.440.470.620.640.460.410.480.520.410.360.490.550.390.360.480.440.339999999999999970.33
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
 Cost Ratio us-gaap:ConcentrationRiskByBenchmark kmx:Other▇▆▅▇▁▇▆█▇▅▅▇▆▄▄▅▅165.898157.4146.834163.85199.728160.467150.234176.57163.212146.403144.362162.677153.894127.726128.723144.673145.571NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:ConcentrationRiskByBenchmark kmx:UsedVehicles█▄▄▄▁▄▄▄▅▃▃▃▄▂▂▃▃6157.3444328.44209.7484389.2332786.2024253.6994028.8114346.2954540.6573628.4323547.9253975.3684021.0473429.2473425.543694.23843.373NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:ConcentrationRiskByBenchmark kmx:WholesaleVehicles█▃▄▄▁▂▃▃▃▂▃▃▃▂▂▂▂1374.357678.457828.362819.082342.852548.324610.983678.286662.449543.767603.584627.99617.651527.245552.754547.767553.39NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
 TTM Greenblatt ROC _ _█▄▅▆▁▄▄▅▅▄▄▅▅▄▄▅▅▄▄▄▄▄▄▄▅▄▄▄▄▃▃▄▄▃▃▃▃▃▃▃▃▃▃▃567.324262.249310.503388.3414.164276.633227.559305.537351.257255.829247.808289.485319.684210.123225.2290.232338.053242.315219.661261.736282.693226.186207.957279.822295.979232.832210.836250.641275.022159.708173.2227.125237.289172.151152.465181.102195.633149.392132.666180.989203.863140.611133.345175.175NANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:AllocatedShareBasedCompensationExpense ▇█▂▆▄▂▅▄▇▂▁▄▅▂▃▃▃▃▂▅▅▁▂▂▄▄▃▄▃▂▃▃▄▃▃▂▃▂▂▂▃▂▂▁41.85748.57911.67738.35525.611.25129.69624.28745.52314.0767.52825.61529.4659.92716.11318.2419.1419.94311.76929.4831.8476.13912.07410.43523.77825.04919.68522.70115.71911.86417.19815.37923.22915.81716.64814.89215.81711.25311.05911.55815.23410.31811.8588.758NANANA
us-gaap:ComprehensiveIncomeNetOfTax █▅▅▆▁▃▄▅▅▄▄▅▅▃▄▄▄▄▃▄▄▃▃▄▄▃▃▄▄▃▃▃▃▃▃▃▃▂▂▃▃▃▂▃439.693244.178242.802301.675-10.356146.87182.779223.175253.548178.683190.609221.5237.923129.718157.163180.026210.028156.183143.092162.605178.731137.495127.684172.537180.907123.605128.658155.827170.148110.065103.234143.875148.94999.15896.347119.02122.4169.61676.953106.486122.5590.37878.645102.672NANANA
us-gaap:CostOfRevenue █▅▅▅▃▅▅▅▅▄▄▄▅▄▄▄▄▄▃▄▄▃▃▃▄▃▃▃▃▃▂▃▃▂▂▂▂▂▂▂▂▂▁▂▂▁▁6773.094522.8884553.5144620.0232874.5994289.6334176.3814507.6984623.9353719.2243726.6344115.3994131.2523547.493567.8293782.6353893.3963487.83198.3893451.8863553.7493216.543079.7383363.5433471.0943038.2552958.6143135.8553248.4652692.1422559.6862810.8092862.9612458.7132257.2272390.0112392.5052137.6771957.2952233.5442296.3221931.9811821.2191992.7621928.3641568.0241483.114
us-gaap:GrossProfit █▅▅▆▂▅▅▆▆▅▄▅▅▄▄▅▅▄▄▄▄▄▃▄▄▃▃▃▄▂▂▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁924.509641.369631.43752.143354.183672.857613.647693.453742.383599.378569.237650.636661.34536.728539.188604.005648.938562.16503.135545.362572.637489.265464.331521.37543.794475.837446.62463.339501.731384.141381.721434.743448.096369.235345.219367.993381.915338.172303.219354.275383.095320.652297.91349.118333.548265.221242.863
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments █▄▅▆▁▄▄▅▅▄▄▅▅▄▄▅▅▄▄▄▄▄▄▄▅▄▄▄▄▃▃▄▄▃▃▃▃▃▃▃▃▃▃▃▃▂▂567.324262.249310.503388.3414.164276.633227.559305.537351.257255.829247.808289.485319.684210.123225.2290.232338.053242.315219.661261.736282.693226.186207.957279.822295.979232.832210.836250.641275.022159.708173.2227.125237.289172.151152.465181.102195.633149.392132.666180.989203.863140.611133.345175.175164.359121.704115.9
us-gaap:IncomeTaxExpenseBenefit █▄▅▆▁▄▄▅▆▄▄▅▅▆▅▇█▆▅▆▇▆▅▇▇▆▅▆▇▄▅▆▆▅▄▅▅▄▄▅▅▄▄▅▄▄▃130.56852.30475.20391.645-0.81461.69954.40371.93884.51363.27357.49768.59581.02887.97776.36108.808126.35189.71283.01699.374107.33385.15979.758107.594114.00589.69480.78796.123105.36960.49966.74886.85190.63864.9357.78469.46674.88756.57449.87269.09477.57551.10150.98167.2963.2446.34441.311
us-gaap:InterestAndFeeIncomeLoansAndLeases █▇▇▇▇▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁310.3290.9288.5280.1282.5283.3278.9275.7266.2250.6247.8242.2232.3219.2217.1213.6206.7195.0192.7190.2184.1175.9172.3169.8164.9154.5152.7150.7147.0139.0138.3137.2133.5126.4125.1123.5120.3114.7114.3111.8107.9NANANANANANA
us-gaap:InterestExpense ▆▆▅▆▆▆▆▆▅▆▅▅▅▅▅▅▅▅▄▄▃▄▃▃▃▁▃▃▃▃▃▃▃▃▃▃▃█▁▁▁▁▁▁▁▁▁20.53420.28919.46222.46923.95822.30721.84321.07317.78420.97618.81417.9518.05219.66617.40516.83616.83816.35315.07113.90411.08811.78410.0217.457.1032.1837.3387.3517.6017.5467.6497.7617.8787.9978.0658.1528.14331.3560.780.7870.7910.8240.8011.4130.0720.3720.674
us-gaap:InterestIncomeExpenseNet █▇▇▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁244.5219.8211.4198.8197.9193.6188.5185.1178.8169.5172.5173.1168.5160.8161.7161.4157.7148.9148.6148.4144.7140.1139.3139.0136.8129.7127.9126.8123.9116.6116.1114.6110.7103.7101.899.695.288.988.785.679.4NANANANANANA
us-gaap:NetIncomeLoss █▄▅▆▁▄▄▅▅▄▄▅▅▃▃▄▄▃▃▄▄▃▃▄▄▃▃▃▄▃▃▃▃▃▂▃▃▂▂▃▃▂▂▃▃▂▂436.756209.945235.3296.6964.978214.934173.156233.599266.744192.556190.311220.89238.656122.146148.84181.424211.702152.603136.645162.362175.36141.027128.199172.228181.974143.138130.049154.518169.65399.209106.452140.274146.651107.22194.681111.636120.74695.03182.794111.895126.28888.75482.364107.885101.11975.3674.589
us-gaap:NonoperatingIncomeExpense █▅▃▃▂▃▄▃▃▃▂▃▃▃▃▃▃▃▃▃▃▁▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃25.5779.0030.8871.68-3.295-1.0966.57-0.1430.3592.689-2.820.686-0.9630.8020.2790.1890.093-0.977-1.0270.4350.616-9.768-1.157-1.593-0.041-1.196-1.536-0.283-0.277-0.254-0.411-1.0730.2410.430.1390.2590.2850.345-0.0940.110.1030.10.198NANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▆█▆▆▅▁▆▅▅▅▆▆▆▆▆▆▆▆▆▆▆▅▆▆▆▄▆▆▆▆▅▆▆2.93734.2337.5024.979-15.334-68.0649.623-10.424-13.196-13.8730.2980.61-0.7337.5728.323-1.398-1.6743.586.4470.2433.371-3.532-0.5150.309-1.067-19.533-1.3911.3090.49510.856-3.2183.6012.298NANANANANANANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▅▅▅▃▅▅▅▅▄▄▅▅▄▄▄▄▄▃▄▄▃▃▄▄▃▃▃▃▃▂▃▃▂▂▂▂▂▂▂▂▂▁▂▂▁▁7697.65164.25184.95372.23228.84962.494790.05201.25366.34318.6024295.94766.04792.64084.2184107.04386.64542.34049.963701.5243997.2484126.3863705.8053544.0693884.9134014.8883514.0923405.2343599.1943750.1963076.2832941.4073245.5523311.0572827.9482602.4462758.0042774.422475.8492260.5142587.8192679.4172252.6332119.1292341.882261.9121833.2451725.977
us-gaap:Revenues █▅▅▅▃▅▅▅▅▄▄▅▅▄▄▄▄▄▃▄▄▃▃▄▄▃▃▃▃▃▂▃▃▂▂▂▂▂▂▂▂▂▁▂▂▁▁7697.5995164.2575184.9445372.1663228.7824962.494790.0285201.1515366.3184318.6024295.8714766.0354792.5924084.2184107.0174386.644542.3344049.963701.5243997.2484126.3863705.8053544.0693884.9134014.8883514.0923405.2343599.1943750.1963076.2832941.4073245.5523311.0572827.9482602.4462758.0042774.422475.8492260.5142587.8192679.4172252.6332119.1292341.882261.9121833.2451725.977
us-gaap:SellingGeneralAndAdministrativeExpense ██▇▇▄▇▇▇▇▆▅▆▆▅▅▅▅▅▄▄▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁554.069556.054478.797490.208373.716484.728484.848480.831489.66428.967409.52453.554438.234408.814399.672405.062403.503385.413356.735366.126380.23333.86337.512330.784349.779330.009316.632297.638313.446297.454284.366283.206290.189265.475257.282254.674253.603243.479232.304236.435248.205226.906219.707225.236226.692202.204192.14
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:Assets █▇▇▇▇▇▇▇▇▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁22832.88921541.54120932.84821246.30619972.53221082.18220487.2320140.25419714.47618717.86718396.81218176.50517756.16717486.27217303.41416875.73316475.68916279.35615760.06715504.33214789.92714481.57614381.16513952.56513670.67713198.20112843.40612399.91312148.9611707.15711303.87510933.77410450.4549888.6029297.6838871.448598.1638331.5437633.4017358.9757160.0316839.9096695.392NANA2556.191NA
us-gaap:Liabilities ██▇█▇█▇▇▇▇▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁18129.40817176.92816804.37217263.74616394.22217313.30716789.17716528.69716261.72115360.83914961.69914694.38714372.40614169.42314002.68713674.74713323.56113170.77612744.68312441.98711817.64211576.7911469.4110741.58110396.01110041.4169661.2549041.9268819.5888390.168015.5067748.9957375.0726869.4356274.0145921.8535777.8155658.4314996.5494806.7534729.6054548.2794511.907NANA622.609NA
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▇▇▇▇▇▇▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁22832.88921541.54120932.84821246.30619972.53221082.18220487.2320140.25419714.47618717.86718396.81218176.50517756.16717486.27217303.41416875.73316475.68916279.35615760.06715504.33214789.92714481.57614381.16513952.56513670.67713198.20112843.40612399.91312148.9611707.15711303.87510933.77410450.4549888.6029297.6838871.448598.1638331.5437633.4017358.9757160.0316839.9096695.392NANA2556.191NA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:AssetsCurrent █▇▆▇▅▆▅▅▅▅▅▅▄▅▄▄▄▄▄▄▃▃▄▃▄▄▄▃▄▄▄▃▃▃▃▂▂▂▂▁▁▁▁4690.6054116.7963737.0974327.8593283.7313663.6873450.2443384.9393283.7453214.0133057.4193022.0872957.4943061.4443004.9232803.3352734.5442873.632684.2782755.3472416.582471.7812634.8832503.7252665.8252599.0382573.2522516.4422636.7362643.2242558.7942481.412454.7732310.1312085.3641961.5481931.0071853.4481648.3991495.8191540.9531410.0981337.5NANA1556.412NA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▄▂▃█▇▁▁▁▁▁▁▁▂▁▁▁▁▁▁▄▁▁▁▂▄▁▃▄▆▇▇██▅▅▅▅▅▅▃▂▁▂▁▁▁▁377.954132.319236.643711.561658.02258.21156.58340.73742.19746.93835.04937.14776.34844.52526.28725.76560.0838.41623.713316.03152.57537.39433.346100.477351.69827.606189.88354.6532.191627.901664.758750.032725.267449.364445.11458.567456.413442.658383.411181.913156.00341.12174.39155.16313.70818.27815.212
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▆▃▄█▇▂▂▂▂▂▁▂▂▁▁▁▁▁1072.026771.947868.4431367.7811261.14656.39630.029637.608633.35595.377569.348599.179621.236554.898525.629540.282555.656523.865NANANA477.229NANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent █▅▃▄▃▄▃▃▃▃▂▂▂▃▂▂▂▃▂▂▂▃▂▂▂▃▂▂▂▁▁▂▁▂▁▁▁▂▁▁▂▂▁413.219239.07168.979203.155145.018191.09142.737141.091133.879139.85111.156104.883101.351133.32195.84199.733104.745152.38892.00394.577102.541132.17188.53100.832103.663137.6988.18108.85997.8179.92368.02785.54970.45291.96162.6670.42665.70586.43454.52264.84985.058119.59766.045NANA99.434NA
us-gaap:InventoryNet ██▇▇▄▇▆▆▆▆▅▅▅▅▅▅▅▅▅▄▄▄▅▄▄▄▄▃▃▃▃▂▂▃▂▂▂▁▁▁▁▁▁3248.8493157.1592780.2052824.9591899.432846.4162682.5742604.752551.1432519.4552424.72357.3552260.0292390.6942440.5512231.7692148.2472260.5632170.1751918.8031864.9911932.0292153.271911.5491844.0772086.8741964.6731708.9551681.81641.4241556.2771364.0161398.21517.8131339.0441198.0131210.1961092.5921013.1831061.3091116.3411049.4771002.982NANA843.133NA
us-gaap:OtherAssetsCurrent ▇▆▄▅▇▆██▅▅▄▅▆▇▄▃▃▃▃▃▃▂▃▃▂▃▄▃▂▂▂▂▁▂▂▂▁▂▁▂▁▃▂101.00591.83358.6667.308100.69686.927109.857114.98777.0967.10159.90175.0688.35993.46253.29941.79235.7841.9141.34745.27332.31726.35832.67345.45929.08844.64648.43338.68526.20226.81120.28626.17315.40221.51324.87522.10610.25817.5129.80621.7629.18733.6620.031NANA7.017NA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:PropertyPlantAndEquipmentGross NA4469.827NANANA4336.022NANANA4125.451NANANA3831.31NANANA3559.77NANANA3087.017NANANA2685.244NANANA2383.533NANANA2077.951NANANA1855.363NANANA1687.138NANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType kmx:FurnitureFixturesAndEquipmentNA750.278NANANA750.888NANANA671.166NANANA600.739NANANA525.177NANANA443.05NANANA389.65NANANA343.958NANANA311.646NANANA273.28NANANA248.944NANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType kmx:LandHeldForDevelopmentNA78.96NANANA73.268NANANA81.1NANANA77.145NANANA98.216NANANA85.127NANANA151.306NANANA170.387NANANA168.83NANANA119.087NANANA72.168NANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingNA2198.182NANANA2186.945NANANA2211.929NANANA2081.785NANANA1934.73NANANA1650.168NANANA1389.063NANANA1244.772NANANA1119.577NANANA1033.034NANANA1005.416NANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNA155.915NANANA171.236NANANA125.01NANANA134.354NANANA179.891NANANA224.109NANANA209.058NANANA145.923NANANA89.532NANANA92.393NANANA44.894NANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandNA868.221NANANA874.904NANANA789.125NANANA722.173NANANA627.784NANANA510.068NANANA397.097NANANA346.518NANANA275.06NANANA232.274NANANA221.997NANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNA291.129NANANA278.781NANANA247.121NANANA215.114NANANA193.972NANANA174.495NANANA146.14NANANA129.186NANANA106.695NANANA95.11NANANA83.287NANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▇▆▅▄▃▃▂▁▄▃▂1452.3351414.2641386.0941342.3211298.5361266.921239.4431199.3751173.1081297.3931263.1681230.012NA1164.2491140.01110.01080.01041.3771010.0984.1954.4925.319901.6876.3849.8822.706799.1778.7754.2730.556707.7690.3NA648.981NANANA576.641NANANA511.821NANANANANA
us-gaap:PropertyPlantAndEquipmentNet █████████▇▇▇▇▇▇▆▆▆▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▂▁▁▁▁▁3076.1733055.5633043.3453044.7733064.7383069.1023036.6632981.262926.5922828.0582800.0512766.9022714.4952667.0612634.4422602.3232557.5062518.3932449.3432326.1782234.3852161.6982105.8072016.521896.3481862.5381833.61753.9921696.941652.9771588.6331535.4311444.1281428.971411.5881347.3131305.4621278.722988.3976.901949.623920.045893.421NANA893.453NA
us-gaap:DeferredTaxAssetsLiabilitiesNet NA164.261NANANA89.842NANANA61.346NANANA63.256NANANA150.962NANANA161.862NANANA175.738NANANA160.065NANANA151.068NANANA143.072NANANA128.876NANANANANA
us-gaap:OperatingLeaseRightOfUseAsset █▇███████▁453.851431.652439.074444.158443.678449.094454.708456.449466.380.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █▇▇▇▆▆▄▄▄▄▄▄▄▃▃▃▃▂▂▂▂▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁314.729283.45286.759282.661266.697258.746201.799185.599203.794185.963182.179190.707185.935158.807154.051147.061145.53140.295137.133138.589133.266149.343148.103149.139138.895133.483131.436128.036116.714110.909112.856104.781102.949107.708101.125103.59398.948106.392101.19398.7399.2596.91394.799NANA49.092NA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:AccountsPayableCurrent █▆▄▅▂▅▅▄▅▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▁▁▂▂▁▁▂▁▁1058.005799.333570.174683.715390.16737.144641.434628.507656.902593.171558.324605.535586.337529.733519.984568.036510.574494.989476.757486.943454.522441.746420.856453.864446.453454.81459.929418.269433.115427.492367.478346.152316.64336.721272.807221.43293.924324.827246.393243.473288.073269.763218.037NANA253.267NA
us-gaap:AccruedIncomeTaxesCurrent █▁▂▆▁▁▁▁▇▁▁96.6240.21818.32264.7340.01.3891.4971.38978.23.7841.634NA55.9910.00.014.898103.5881.4042.0710.20589.9912.0290.3281.16959.0891.5540.4240.24494.8162.4388.5541.80858.9650.2220.2660.55748.073.12513.0697.45138.2360.7720.524NANA6.327NA
us-gaap:AccruedLiabilitiesCurrent ██▇▇▅▆▆▅▅▆▅▅▄▅▄▄▃▅▄▄▃▄▃▄▃▄▃▃▂▃▂▂▁▂▁▁▁▂▁▁▁▁▁401.043415.465372.429350.185290.08331.738340.475301.503288.136316.215280.104266.214252.633278.771233.397251.933203.211266.128224.585246.053205.426245.909211.833226.371184.277250.307202.533205.48159.298202.588138.91144.949109.714147.821116.629116.167108.733128.973123.074107.653107.596103.389110.436NANA94.557NA
us-gaap:DebtCurrent █▃▂▄▂▁506.879452.579446.136468.692439.885433.456NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent █▆▅▆▄▆▅▅▅▅▄▅▅▄▄▄▄▄▃▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▁▁▂▂▁▁▁▁▁2093.3871698.5481437.7871598.9421151.0061534.7071421.0411396.7041485.4021311.5091224.8731283.4611288.2021174.0581111.6781201.5571166.671105.7871027.7171084.3631083.3741005.193923.5541001.977999.573997.173928.182906.927962.158875.497748.601729.919710.234684.173575.692525.839618.516646.313531.316490.29576.829508.217469.254NANA477.351NA
us-gaap:LongTermDebtCurrent ▃▃▃▃▂▂▁▄█▃10.219.92710.22810.0059.7449.2518.54110.76214.36210.177NANANANANANANANANANANANANANANANANANANANANANANANANANANANA0.8380.8150.8120.7720.751NANA122.317NA
us-gaap:OperatingLeaseLiabilityCurrent █████████▁30.83630.95330.72631.61630.88130.9830.81330.06629.8220.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:LongTermDebt █▃▂▅▁▆15160.99514619.91914481.014797.76814416.1814944.055NANANA13776.534NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent NA97.58NANANA141.489NANANA76.239NANANA84.59NANANA89.137NANANA90.172NANANA93.53NANANA62.698NANANA78.518NANANA67.218NANANA35.744NANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType kmx:RestorationPlanNA11.423NANANA11.883NANANA10.582NANANA10.556NANANA10.355NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNA86.157NANANA129.606NANANA65.657NANANA74.034NANANA78.782NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▇███▇▇▅▅▅▄▄▃▃▄▄▄▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▂▁▁▁▁▁428.529434.843454.517431.923391.711393.873317.58299.224289.817243.005242.644233.605223.052242.553239.672239.186231.021238.551232.439226.978222.936229.274229.91225.552220.185225.493182.675176.026168.665174.232190.58181.256171.631175.635145.834140.684136.73148.8119.474119.495123.529130.57127.257NANA117.887NA
us-gaap:OperatingLeaseLiabilityNoncurrent █▇███████▁446.497423.618431.068435.113435.325440.671446.302448.64458.7880.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo █▁▇▆53.41551.16753.10152.78NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree █▁▃▁52.19550.29350.89150.211NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour █▁▄▂51.05749.19750.01749.339NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive ▃▁█▇45.16643.35948.9248.214NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive █▁██571.473529.331574.547573.369NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest █▇▆▆▅▅▅▅▅▄▄▅▄▄▄▄▄▄▃▃▃▃▃▄▄▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▁▁4703.4814364.6134128.4763982.563578.313768.8753698.0533611.5573452.7553357.0283435.1133482.1183383.7613316.8493300.7273200.9863152.1283108.583015.3843062.3452972.2852904.7862911.7553210.9843274.6663156.7853182.1523357.9873329.3723316.9973288.3693184.7793075.3823019.1673023.6692949.5872820.3482673.1122636.8522552.2222430.4262291.632183.485NANA1933.582NA
us-gaap:CommonStockValue ▁▁▁▁▁▁▁▁▁▂▂▂▂▃▃▃▃▄▄▄▄▄▅▅▆▆▆▇▇▇▇▇███████████81.40181.58681.51782.08181.37881.54181.89782.44282.69783.73985.89387.64588.3689.87490.74590.95291.93693.27493.67695.5496.24897.35698.781102.465104.341104.435105.459108.352109.242110.843111.614111.665112.073112.953114.108114.222114.153113.559113.237113.213113.018112.943112.752NANA111.533NA
us-gaap:AdditionalPaidInCapital ██▇▇▆▆▆▆▅▅▅▅▅▅▅▅▅▅▄▅▄▄▄▄▅▄▄▄▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁1527.8761513.8211462.131460.31358.4281348.9881321.5671313.291261.7421237.1531255.9661265.931234.6121234.0471233.0621193.7991184.6611188.5781160.4841175.1661136.4691130.8221136.6071161.6781170.031123.521080.2671089.3171036.1971038.2091013.9391000.258990.778972.25942.017911.875901.725877.493858.79851.137836.022820.639806.446NANA746.134NA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▆▆▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▂▂▂▁▁3209.9582887.8972737.7532600.6052303.9092488.4172376.5962307.4552189.5222104.1462147.3912182.9782115.8342047.242028.2241975.8621933.761883.2831821.3591858.2211806.3931746.8041743.0312012.992066.7531994.2212042.2842204.7852229.7092214.2162219.9432126.7652030.0411993.7722019.2891976.9011865.2651744.5191704.0821621.2881509.3931383.1051293.595NANA1095.461NA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▃▃▂▁▁▂▅▅▅▆▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▆▇▇▇▇▆▇▆▆▇▇▆▆▇████-115.754-118.691-152.924-160.426-165.405-150.071-82.007-91.63-81.206-68.01-54.137-54.435-55.045-54.312-51.304-59.627-58.229-56.555-60.135-66.582-66.825-70.196-66.664-66.149-66.458-65.391-45.858-44.467-45.776-46.271-57.127-53.909-57.51-59.808-51.745-53.411-60.795-62.459-39.257-33.416-28.007-25.057-29.308NANA-19.546NA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents kmx:UnrecognizedActuarialLosses▃▃▁▁▁▁▄▄▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▇▇▇▇▆▆▆▆▇▇▇▆██-92.003-92.662-119.119-119.846-120.574-121.302-69.412-69.767-70.123-70.478-67.388-67.758-68.128-68.497-54.695-54.972-55.247-55.521-55.726-55.973-56.221-56.47-58.253-58.575-58.914-59.22-38.075-38.289-38.502-38.715-48.978-48.953-49.223-49.479-39.137-39.325-39.514-39.774-17.298-17.37NA-17.528NANANA-19.546NA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents kmx:UnrecognizedHedgeLosses▄▃▂▂▁▃▅▄▅▇████▇▆▆▆▆▅▅▅▅▅▅▆▅▆▅▅▅▆▅▅▅▅▄▄▄▄-23.751-26.029-33.805-40.58-44.831-28.769-12.595-21.863-11.0832.46813.25113.32313.08314.1853.391-4.655-2.982-1.034-4.409-10.609-10.604-13.726-8.411-7.574-7.544-6.171-7.783-6.178-7.274-7.556-8.149-4.956-8.287-10.329-12.608-14.086-21.281-22.685-21.959-16.046NA-7.529NANANA0.0NA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue 20.102NA9.94212.56817.652NA8.74510.75718.912NA9.6549.69516.645NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▂▂▁█▂▃▂▃▃▃-111.883-200.626-21.39-359.7831249.559-118.77.55-168.65743.20148.3413.745NANANANANANANANANANANANANANANANANANANANANANANANANA-115.52-59.73779.214-103.73322.0925.29-13.022-65.07455.608-6.187NA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅█▇▇▅▁▄▃▄▅▄-63.143-6.107-29.719-27.285-65.072-132.777-77.719-92.757-86.111-61.516-72.049NANANANANANANANANANANANANANANANANANANANANANANANANA-20.419-100.867-44.398-34.658-39.479-34.619-16.744-25.194.341-3.479NA
us-gaap:NetCashProvidedByUsedInFinancingActivities █▅▂█▁▇▅▇▅▅▅475.105110.237-448.229493.709-579.737277.83862.59265.67280.88339.20438.473NANANANANANANANANANANANANANANANANANANANANANANANANA149.694219.851166.682164.301132.269-3.94148.994131.719-64.51912.732NA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:DeferredIncomeTaxExpenseBenefit ▅▂▁▂▅▃▃▃▄▃▃▃▃█▄▃▄▃▃▃▄▅▃▂▄▄▃▃▃▂▃▂▄▄▃▃▄▃▂▃▄▃▃▃▄▄24.751-16.258-28.127-16.44325.041-0.358-4.556-5.589.3921.391-1.63-1.0633.60266.62312.113-4.5116.7822.908-7.312-0.6467.37425.559-7.584-11.21310.4759.048-6.817-7.3010.771-12.609-1.376-9.8956.69510.427-6.493-7.5877.5112.986-8.266-4.438.8385.0414.048-4.8415.1449.449NA
us-gaap:DepreciationDepletionAndAmortization ████▇▇▇▆▆▆▆▅▆▆▅▅▅▅▅▅▅▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▄▁▁▁▁▁▁▁▁62.35661.66161.52860.62758.3457.58554.75851.96251.50646.63845.29844.96845.34346.76745.09744.18443.89443.22142.64142.21240.80136.85635.31633.12232.06630.17929.22828.42327.34327.92824.82324.82524.33524.56224.27923.4622.98234.79117.01715.615.40415.76414.60914.61614.43214.381NA
us-gaap:IncreaseDecreaseInAccountsReceivable █▅▁▄▁▄▃▃▂▃▃▃▁▄▂▂▁▄▂▂▂▄▂▂▁▄▂▃▃▃▂▃▂▃▂▃▂▄▂▂▁▃▃▂▃▃174.14965.618-34.17658.137-46.07248.3531.6467.212-5.97128.6946.2733.532-31.9737.48-3.892-5.012-47.64360.385-2.574-7.964-29.6343.641-12.302-2.831-34.02749.51-20.67911.04917.88711.896-17.52215.097-21.50929.301-7.7664.721-20.72931.912-10.327-20.209-34.53927.52426.091-18.9165.83915.996NA
us-gaap:IncreaseDecreaseInInventories ▅▆▄█▁▅▅▅▅▅▅▅▄▄▅▅▄▅▅▅▄▄▅▅▄▅▅▅▅▅▅▄▄▅▅▄▅▅▄▄▅▆▄▅▅▅91.69389.529-44.754925.529-946.986163.84277.82453.60731.68894.75567.34597.326-130.665-49.857208.78283.522-112.31690.388251.37253.812-67.038-221.241241.72167.472-242.797122.201255.71827.15540.37685.147192.261-34.184-119.613178.769141.031-12.183117.60479.409-48.126-55.03266.864366.193-245.88634.50551.532188.116NA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▂▂▁█▂▃▂▃▃▃-111.883-200.626-21.39-359.7831249.559-118.77.55-168.65743.20148.3413.745NANANANANANANANANANANANANANANANANANANANANANANANANA-115.52-59.73779.214-103.73322.0925.29-13.022-65.07455.608-6.187NA
us-gaap:NetIncomeLoss █▄▅▆▁▄▄▅▅▄▄▅▅▃▃▄▄▃▃▄▄▃▃▄▄▃▃▃▄▃▃▃▃▃▂▃▃▂▂▃▃▂▂▃▃▂▂436.756209.945235.3296.6964.978214.934173.156233.599266.744192.556190.311220.89238.656122.146148.84181.424211.702152.603136.645162.362175.36141.027128.199172.228181.974143.138130.049154.518169.65399.209106.452140.274146.651107.22194.681111.636120.74695.03182.794111.895126.28888.75482.364107.885101.11975.3674.589
us-gaap:ShareBasedCompensation ▇█▂▆▄▂▅▄█▂▁▄▅▂▃▃▃▃▂▅▅▁▂▂▄▄▃▄▃▂▃▃▄▃▃▂▃▂▂▂▃▂▂▁▂▁41.07447.95311.15237.73725.05710.68429.2923.86245.02513.6087.16925.23628.9989.51615.77817.85918.72619.56911.46529.12431.4375.79311.77810.09723.40924.68819.41422.3915.38811.53216.94615.06122.94115.51516.39114.61415.59210.94110.84511.29315.0110.00611.6438.49613.4617.161NA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅█▇▇▅▁▄▃▄▅▄-63.143-6.107-29.719-27.285-65.072-132.777-77.719-92.757-86.111-61.516-72.049NANANANANANANANANANANANANANANANANANANANANANANANANA-20.419-100.867-44.398-34.658-39.479-34.619-16.744-25.194.341-3.479NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▄▃▃▃▅▆▆▆▆▅▅▆▆▅▅▅▆▇▇█▇▅▇▆▄▅▇▆▄▇▆▇▃▄▆▄▄▅▂▄▃▃▂▁▁▁59.14540.58431.95429.12762.87182.71977.8392.37778.9761.32572.291.39179.7269.25772.44975.69479.416102.601100.956117.12497.46374.74995.10886.2959.43770.957103.56781.58453.70997.41776.88993.96642.04550.76581.02456.28247.63666.62625.76549.17931.04638.04423.3046.0789.1544.062NA
us-gaap:PaymentsToAcquireInvestments ▂▁▁▁▁█▁▁▂▁▁▁▂▁▂▁▁▁4.7011.020.1430.1972.36950.6120.1941.027.2240.6770.1640.2125.0940.1247.1810.2891.055-0.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
us-gaap:NetCashProvidedByUsedInFinancingActivities █▅▂█▁▇▅▇▅▅▅475.105110.237-448.229493.709-579.737277.83862.59265.67280.88339.20438.473NANANANANANANANANANANANANANANANANANANANANANANANANA149.694219.851166.682164.301132.269-3.94148.994131.719-64.51912.732NA
us-gaap:PaymentsForRepurchaseOfCommonStock ▃▂▃▁▂▃▃▃▄▅▅▄▄▃▃▃▄▃▄▃▃▄█▅▃▅▆▄▄▃▁▂▃▃▂▁▁▁133.83871.313104.4740.01154.14109.16116.658129.968211.961271.556251.823170.297211.05124.61110.175157.4187.38599.985198.327128.036137.989167.76446.971251.582117.628228.362315.257201.438171.924110.517.4749.063130.215152.31451.0910.00.00.0NANANANANANANANANA
  2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value8181818281818182828385878889909091939395969798102104104105108109110111111112112114114114113113113113112112111
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 Assets0.40.40.40.40.40.40.40.40.40.40.50.50.50.50.50.50.60.60.60.60.70.70.70.70.80.80.80.90.90.91.01.01.11.11.21.31.31.41.51.51.61.71.74.4

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value162163163164162163163164165167171175176179181181183186187191192194197204208208210216218221223223224225228228228227226226226225225223
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-282009-02-282008-02-29
Value162163163164162163163164165167171175176179186194208221225227225223220218
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-312010-05-312009-11-30
Value1661651651631661671671751781791841841861901931952032092112172212232272272282322312312302300.2302782282260.226179223
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-312010-05-312009-11-30
Value1631631631621641651661731761781811821851891911932012072082142182202232232242282282272262260.225572232220.222221220
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-31
Value289140.0115510.029200.04258300.01235600.01288400.03083200.02808600.02210900.03434800.02712700.03130300.02218300.03104700.02964500.02610500.01383900.01390900.0812360.01707600.02885900.02420800.01309300.01426200.0801610.03794300.04266800.03202800.03263300.03255000.01187100.01558800.03667900.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value2.681.291.441.820.031.321.051.411.61.141.091.251.340.680.820.991.140.820.720.850.910.720.640.830.870.680.610.710.770.450.480.630.650.470.410.490.530.420.370.490.560.390.370.480.450.340.34
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value2.631.271.421.790.031.31.041.41.591.131.091.241.330.670.810.981.130.810.720.840.90.710.630.820.860.670.60.70.760.440.470.620.640.460.410.480.520.410.360.490.550.390.360.480.440.340.33
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-31
Value414811382511292445147.52825299.927161819191129316.1391210232519221511171523151614151111111510118.758
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.00.20.70.80.20.60.50.80.30.20.50.60.20.40.40.40.50.30.70.80.20.30.30.60.70.60.60.40.40.60.50.70.60.60.50.60.50.50.40.60.50.60.4

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

kmx:CashSettledRestrictedStockUnits


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value20381.21257.4050.9762013263.732-2.48515122.1868.459.7853.118124.499.08512-2.4452.960.525101410113.1473.5658.0145.884126.6389.2385.6922.74.5863.9823.523.347
Percentage of AllocatedShareBasedCompensationExpense50.179.210.465.628.98.769.254.057.426.5-33.060.741.922.052.453.616.361.638.230.838.9-39.824.55.045.756.751.448.820.030.046.638.352.042.055.538.217.140.836.030.522.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.00.50.20.00.40.30.50.1-0.10.30.30.10.20.20.10.30.10.20.3-0.10.10.00.30.40.30.30.10.10.30.20.40.20.40.20.10.20.20.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:CashSettledRestrictedStockUnits0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:DeferredStockUnits


Allocated
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value0.00.01.9250.00.0880.01.960.4520.4350.4260.2940.00.00.00.0
Percentage of AllocatedShareBasedCompensationExpense0.00.05.00.00.80.08.11.03.15.71.10.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:DeferredStockUnits0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:Othersharebasedincentives


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value4.2190.7770.6762.6890.731.8470.1631.8093.1591.4671.1020.9391.360.9580.403-0.0042.031
Percentage of AllocatedShareBasedCompensationExpense10.11.65.87.02.916.40.57.46.910.414.63.74.69.72.5-0.010.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.10.00.00.00.00.10.00.00.00.00.00.0-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:Othersharebasedincentives0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:StockSettledRestrictedStockUnits


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value4.8453.083.1613.5095.8462.5762.8373.0524.4092.7232.6812.6434.6361.7332.1352.5433.6212.2242.4633.6983.652.4662.5862.6412.8962.7023.0043.4724.1212.8182.9862.8913.822.8292.5892.8444.1792.2312.2912.2923.546
Percentage of AllocatedShareBasedCompensationExpense11.66.327.19.122.822.99.612.69.719.335.610.315.717.513.313.918.911.220.912.511.540.221.425.312.210.815.315.326.223.817.418.816.417.915.619.126.419.820.719.823.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.10.10.20.10.10.10.10.10.10.10.10.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:StockSettledRestrictedStockUnits0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EmployeeStock


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value0.7830.6250.5250.6180.5430.5660.4070.4250.4980.4680.3590.3790.4670.4110.3350.3810.4140.3730.3050.3550.410.3460.2960.3380.3690.3610.2710.3110.3310.3320.2520.3180.2880.3020.2570.2780.2250.3110.2150.2650.224
Percentage of AllocatedShareBasedCompensationExpense1.91.34.51.62.15.01.41.71.13.34.81.51.64.12.12.12.21.92.61.21.35.62.53.21.61.41.41.42.12.81.52.11.21.91.51.91.42.81.92.31.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EmployeeStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EmployeeStockOption


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value116.2636.636.988115.8526.1516.321116.1546.236.493115.055.1255.916104.574.75615135.3355.7945.598.687.7246.2236.8878.125.1495.9465.7867.0336.0484.5645.5288.713
Percentage of AllocatedShareBasedCompensationExpense28.212.956.818.245.452.020.726.026.043.782.825.337.750.931.832.454.222.940.451.241.286.948.053.636.530.831.630.351.743.434.637.630.338.227.437.155.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.00.10.10.40.10.10.10.20.10.10.10.20.10.10.10.20.10.10.40.30.10.20.10.20.20.20.20.20.20.20.20.20.20.20.20.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:EmployeeStockOption0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PerformanceShares


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-31
Value3.3940.1110.1120.1130.1531.17-0.244-0.5762.2090.690.3170.320.4060.0990.059-0.8631.3530.23-0.4880.1992.1330.340.3410.3440.8940.00.00.00.0
Percentage of AllocatedShareBasedCompensationExpense8.10.21.00.30.610.4-0.8-2.44.94.94.21.21.41.00.4-4.77.11.2-4.10.76.75.52.83.33.80.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0-0.0-0.00.00.00.00.00.00.00.0-0.00.00.0-0.00.00.10.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:PerformanceShares0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStock


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value0.0420.0410.0390.0330.0340.0230.00.00.0-0.1260.0-0.0540.4870.4480.0090.4780.2640.2580.2431.0530.1470.0970.0970.9970.0660.0650.0660.9570.00.00.00.00.00.00.00.00.00.00.0320.131
Percentage of AllocatedShareBasedCompensationExpense0.10.10.30.10.10.20.00.00.0-0.90.0-0.21.74.50.12.61.41.32.13.60.51.60.89.60.30.30.34.20.00.00.00.00.00.00.00.00.00.00.30.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.0-0.00.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RestrictedStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

kmx:CarmaxAutoFinanceIncome


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value1.7081.9070.9381.5421.270.7741.3171.0441.8050.7740.5961.2371.1970.6040.8950.8480.820.8860.6630.7470.9040.3580.5020.4410.1573.3720.8890.9610.6760.6810.790.730.7820.6760.7160.6510.478
Percentage of AllocatedShareBasedCompensationExpense4.13.98.04.05.06.94.44.34.05.57.94.84.16.15.64.64.34.45.62.52.85.84.24.20.713.54.54.24.35.74.64.73.44.34.34.43.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:CarmaxAutoFinanceIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostOfSales


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value1.7293.6030.0112.5120.6790.0892.1281.342.8250.401-0.3431.6031.2910.2860.9631.0760.2271.4480.5841.0541.36-0.2160.3940.0171.0481.5031.1591.2470.3270.3041.0370.5861.2730.8021.1110.6820.415
Percentage of AllocatedShareBasedCompensationExpense4.17.40.16.52.70.87.25.56.22.8-4.66.34.42.96.05.91.27.35.03.64.3-3.53.30.24.46.05.95.52.12.66.03.85.55.16.74.62.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.10.0-0.00.00.00.00.00.00.00.00.00.00.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses


Allocated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value384310342310262140127.27522269.037141618171027295.997119.97722201720141015142114141314
Percentage of AllocatedShareBasedCompensationExpense91.888.791.989.492.492.388.490.289.891.796.688.991.691.088.589.594.588.389.493.992.997.792.695.694.980.589.690.393.691.789.491.491.290.789.091.094.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.00.20.60.70.20.50.40.80.30.20.50.60.20.30.40.40.40.30.70.70.20.30.30.60.60.50.60.40.40.50.40.60.50.60.50.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingGeneralAndAdministrativeExpenses0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-31
Value439244242301-10.356146182223253178190221237129157180210156143162178137127172180123128155170110103143148999611912269761061229078102
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.70.04.75.6-0.33.03.84.34.74.14.44.65.03.23.84.14.63.93.94.14.33.73.64.44.53.53.84.34.53.63.54.44.53.53.74.34.42.83.44.14.64.03.74.4

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value67734522455346202874428941764507462337193726411541313547356737823893348731983451355332163079336334713038295831353248269225592810286224582257239023922137195722332296193118211992192815681483
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax88.00.087.886.089.086.487.286.786.286.186.786.386.286.986.986.285.786.186.486.486.186.886.986.686.586.586.987.186.687.587.086.686.586.986.786.786.286.386.686.385.785.885.985.185.30.085.9

us-gaap:CostOfRevenue us-gaap:ConcentrationRiskByBenchmark

kmx:Other


Cost
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value2446483769455656433749524651474633
Percentage of CostOfRevenue0.41.01.10.82.41.11.41.30.91.01.31.31.11.41.31.20.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.90.72.10.91.21.10.80.91.21.11.01.31.21.10.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:Other0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:UsedVehicles


Cost
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value55603900379139082524379936153889404332383177354635813063306132893411
Percentage of CostOfRevenue82.186.283.384.687.888.686.686.387.587.185.386.286.786.385.887.087.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax72.20.073.172.778.276.675.574.875.475.074.074.474.775.074.575.075.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:UsedVehicles0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:WholesaleVehicles


Cost
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value1188575713674280444504560536443498516502433459447448
Percentage of CostOfRevenue17.512.715.714.69.810.412.112.411.611.913.412.612.212.212.911.811.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.40.013.812.68.78.910.510.810.010.311.610.810.510.611.210.29.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:WholesaleVehicles0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value924641631752354672613693742599569650661536539604648562503545572489464521543475446463501384381434448369345367381338303354383320297349333265242
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.00.012.214.011.013.612.813.313.813.913.313.713.813.113.113.814.313.913.613.613.913.213.113.413.513.513.112.913.412.513.013.413.513.113.313.313.813.713.413.714.314.214.114.914.70.014.1

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value5672623103884.164276227305351255247289319210225290338242219261282226207279295232210250275159173227237172152181195149132180203140133175164121115
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.40.06.07.20.15.64.85.96.55.95.86.16.75.15.56.67.46.05.96.56.96.15.97.27.46.66.27.07.35.25.97.07.26.15.96.67.16.05.97.07.66.26.37.57.30.06.7

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value130527591-0.814615471846357688187761081268983991078579107114898096105606686906457697456496977515067634641
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.70.01.51.7-0.01.21.11.41.61.51.31.41.72.21.92.52.82.22.22.52.62.32.32.82.82.62.42.72.82.02.32.72.72.32.22.52.72.32.22.72.92.32.42.92.80.02.4

Interest And Fee Income Loans And Leases

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestAndFeeIncomeLoansAndLeases


Interest
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value310290288280282283278275266250247242232219217213206195192190184175172169164154152150147139138137133126125123120114114111107
Percentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.00.05.65.28.75.75.85.35.05.85.85.14.85.45.34.94.64.85.24.84.54.74.94.44.14.44.54.23.94.54.74.24.04.54.84.54.34.65.14.34.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value20201922232221211720181718191716161615131111107.457.1032.1837.3387.3517.6017.5467.6497.7617.8787.9978.0658.1528.143310.780.7870.7910.8240.8011.4130.0720.3720.674
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.40.40.70.40.50.40.30.50.40.40.40.50.40.40.40.40.40.30.30.30.30.20.20.10.20.20.20.20.30.20.20.30.30.30.31.30.00.00.00.00.00.10.00.00.0

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value244219211198197193188185178169172173168160161161157148148148144140139139136129127126123116116114110103101999588888579
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.20.04.13.76.13.93.93.63.33.94.03.63.53.93.93.73.53.74.03.73.53.83.93.63.43.73.83.53.33.83.93.53.33.73.93.63.43.63.93.33.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value4362092352964.9782141732332661921902202381221481812111521361621751411281721811431301541699910614014610794111120958211112688821071017574
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.70.04.55.50.24.33.64.55.04.54.44.65.03.03.64.14.73.83.74.14.23.83.64.44.54.13.84.34.53.23.64.34.43.83.64.04.43.83.74.34.73.93.94.64.50.04.3

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value4362352964.978173233266190220238
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.74.55.50.23.64.55.04.44.65.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-30
Value259.0030.8871.68-3.295-1.0966.57-0.1430.3592.689-2.820.686-0.9630.8020.2790.1890.093-0.977-1.0270.4350.616-9.768-1.157-1.593-0.041-1.196-1.536-0.283-0.277-0.254-0.411-1.0730.2410.430.1390.2590.2850.345-0.0940.110.1030.10.198
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.00.0-0.1-0.00.1-0.00.00.1-0.10.0-0.00.00.00.00.0-0.0-0.00.00.0-0.3-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.00.00.0-0.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-31
Value2.937347.5024.979-15.334-68.0649.623-10.424-13.196-13.8730.2980.61-0.7337.5728.323-1.398-1.6743.586.4470.2433.371-3.532-0.5150.309-1.067-19.533-1.3911.3090.49510-3.2183.6012.298
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.10.1-0.5-1.40.2-0.2-0.2-0.30.00.0-0.00.20.2-0.0-0.00.10.20.00.1-0.1-0.00.0-0.0-0.6-0.00.00.00.4-0.10.10.1

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

kmx:UnrecognizedActuarialLosses


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-31
Value0.659260.7270.7280.728-51.890.3550.3560.355-3.090.370.370.369-2.1970.2770.2750.2740.2050.2470.2480.2491.7830.3220.3390.306-21.1450.2140.2130.21310-0.0250.270.256
Percentage of OtherComprehensiveIncomeLossNetOfTax22.477.39.714.6-4.776.23.7-3.4-2.722.3124.260.7-50.3-29.03.3-19.7-16.45.73.8102.17.4-50.5-62.5109.7-28.7108.3-15.416.343.094.50.87.511.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.0-1.00.00.00.0-0.10.00.00.0-0.10.00.00.00.00.00.00.00.00.00.00.0-0.60.00.00.00.3-0.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:UnrecognizedActuarialLosses0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:UnrecognizedHedgeLosses


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-31
Value2.2787.7766.7754.251-16.062-16.1749.268-10.78-13.551-10.783-0.0720.24-1.1029.7698.046-1.673-1.9483.3756.2-0.0053.122-5.315-0.837-0.03-1.3731.612-1.6051.0960.2820.593-3.1933.3312.042
Percentage of OtherComprehensiveIncomeLossNetOfTax77.622.790.385.4104.723.896.3103.4102.777.7-24.239.3150.3129.096.7119.7116.494.396.2-2.192.6150.5162.5-9.7128.7-8.3115.483.757.05.599.292.588.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.10.1-0.5-0.30.2-0.2-0.3-0.2-0.00.0-0.00.20.2-0.0-0.00.10.2-0.00.1-0.1-0.0-0.0-0.00.0-0.00.00.00.0-0.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:UnrecognizedHedgeLosses0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value2.9377.5024.979-15.3349.623-10.424-13.1960.2980.61-0.733
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.1-0.50.2-0.2-0.20.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value76975164518453723228496247905201536643184295476647924084410743864542404937013997412637053544388440143514340535993750307629413245331128272602275827742475226025872679225221192341226118331725
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

kmx:ExtendedprotectionplanDomain


Revenue
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value134118101119731159711311198859810081778591
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.72.32.02.22.32.32.02.22.12.32.02.12.12.01.91.92.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.72.32.02.22.32.32.02.22.12.32.02.12.12.01.91.92.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:ExtendedprotectionplanDomain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:Other


Revenue
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value16515714616399160150176163146144162153127128144145
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.23.02.83.13.13.23.13.43.03.43.43.43.23.13.13.33.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.23.02.83.13.13.23.13.43.03.43.43.43.23.13.13.33.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:Other100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:OtherDomain


Revenue
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value1420313317283340332734373126323631
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.40.60.60.50.60.70.80.60.60.80.80.70.60.80.80.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.40.60.60.50.60.70.80.60.60.80.80.70.60.80.80.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:OtherDomain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:ServiceDomain


Revenue
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value2221242619272833343132363633323433
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.40.50.50.60.50.60.60.60.70.80.80.80.80.80.80.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.40.50.50.60.50.60.60.60.70.80.80.80.80.80.80.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:ServiceDomain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:ThirdpartyfinancefeesDomain


Revenue
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value-4.6-2.9-10.6-15.4-10.7-10.6-9.4-10.3-15.5-10.9-8.4-9.7-14.5-14.1-12.8-11.6-11.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.1-0.2-0.3-0.3-0.2-0.2-0.2-0.3-0.3-0.2-0.2-0.3-0.3-0.3-0.3-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.1-0.2-0.3-0.3-0.2-0.2-0.2-0.3-0.3-0.2-0.2-0.3-0.3-0.3-0.3-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:ThirdpartyfinancefeesDomain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:UsedVehicles


Revenue
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value61574328420943892786425340284346454036283547397540213429342536943843
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.083.881.281.786.385.784.183.684.684.082.683.483.984.083.484.284.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.083.881.281.786.385.784.183.684.684.082.683.483.984.083.484.284.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:UsedVehicles100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:WholesaleVehicles


Revenue
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value1374678828819342548611678662543603628617527552547553
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.913.116.015.210.611.012.813.012.312.614.113.212.912.913.512.512.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.913.116.015.210.611.012.813.012.312.614.113.212.912.913.512.512.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:WholesaleVehicles100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value76975164518453723228496247905201536643184295476647924084410743864542404937013997412637053544388440143514340535993750307629413245331128272602275827742475226025872679225221192341226118331725
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ConcentrationRiskByBenchmark

kmx:Other


Revenuesus-gaap:
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value16515714616399160150176163146144162153127128144145
Percentage of Revenues2.23.02.83.03.13.23.13.43.03.43.43.43.23.13.13.33.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.23.02.83.03.13.23.13.43.03.43.43.43.23.13.13.33.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:Other0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:UsedVehicles


Revenuesus-gaap:
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value61574328420943892786425340284346454036283547397540213429342536943843
Percentage of Revenues80.083.881.281.786.385.784.183.684.684.082.683.483.984.083.484.284.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.083.881.281.786.385.784.183.684.684.082.683.483.984.083.484.284.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:UsedVehicles0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:WholesaleVehicles


Revenuesus-gaap:
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value1374678828819342548610678662543603627617527552547553
Percentage of Revenues17.913.116.015.210.611.012.813.012.312.614.113.212.912.913.512.512.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.913.116.015.210.611.012.813.012.312.614.113.212.912.913.512.512.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax kmx:WholesaleVehicles0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value554556478490373484484480489428409453438408399405403385356366380333337330349330316297313297284283290265257254253243232236248226219225226202192
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.210.89.29.111.69.810.19.29.19.99.59.59.110.09.79.28.99.59.69.29.29.09.58.58.79.49.38.38.49.79.78.78.89.49.99.29.19.810.39.19.310.110.49.610.011.011.1

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value22832215412093221246199722108220487201401971418717183961817617756174861730316875164751627915760155041478914481143811395213670131981284312399121481170711303109331045098889297887185988331763373587160683966952556
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
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

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value181291717616804172631639417313167891652816261153601496114694143721416914002136741332313170127441244111817115761146910741103961004196619041881983908015774873756869627459215777565849964806472945484511622
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 Assets79.479.780.381.382.182.181.982.182.582.181.380.880.981.080.981.080.980.980.980.279.979.979.877.076.076.175.272.972.671.770.970.970.669.567.566.867.267.965.565.366.166.567.424.4

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value22832215412093221246199722108220487201401971418717183961817617756174861730316875164751627915760155041478914481143811395213670131981284312399121481170711303109331045098889297887185988331763373587160683966952556
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

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value46904116373743273283366334503384328332143057302229573061300428032734287326842755241624712634250326652599257325162636264325582481245423102085196119311853164814951540141013371556
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.519.117.920.416.417.416.816.816.717.216.616.616.717.517.416.616.617.717.017.816.317.118.317.919.519.720.020.321.722.622.622.723.523.422.422.122.522.221.620.321.520.620.060.9

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-302009-02-282008-02-29
Value37713223671165858564042463537764426256038233165237331003512718935453262766475072544944545845644238318115641745513181514012
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.70.61.13.33.30.30.30.20.20.30.20.20.40.30.20.20.40.20.22.00.40.30.20.72.60.21.52.94.45.45.96.96.94.54.85.25.35.35.02.52.20.61.10.00.00.70.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-29
Value107277186813671261656630637633595569599621554525540555523477
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.73.64.16.46.33.13.13.23.23.23.13.33.53.23.03.23.43.23.3

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value413239168203145191142141133139111104101133959910415292941021328810010313788108977968857091627065865464851196699
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.10.81.00.70.90.70.70.70.70.60.60.60.80.60.60.60.90.60.60.70.90.60.70.81.00.70.90.80.70.60.80.70.90.70.80.81.00.70.91.21.71.03.9

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value3248315727802824189928462682260425512519242423572260239024402231214822602170191818641932215319111844208619641708168116411556136413981517133911981210109210131061111610491002843
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.214.713.313.39.513.513.112.912.913.513.213.012.713.714.113.213.013.913.812.412.613.315.013.713.515.815.313.813.814.013.812.513.415.314.413.514.113.113.314.415.615.315.033.0

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value101915867100861091147767597588935341354141453226324529444838262620261521242210179.806219.18733207.017
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.30.30.50.40.50.60.40.40.30.40.50.50.30.20.20.30.30.30.20.20.20.30.20.30.40.30.20.20.20.20.10.20.30.20.10.20.10.30.10.50.30.3

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value44694336412538313559308726852383207718551687
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.720.622.021.921.921.320.320.421.022.324.7

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

kmx:FurnitureFixturesAndEquipment


Property
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value750750671600525443389343311273248
Percentage of PropertyPlantAndEquipmentGross16.817.316.315.714.814.414.514.415.014.714.8
Percentage of Assets3.53.63.63.43.23.13.02.93.23.33.6
Percentage of Assets kmx:FurnitureFixturesAndEquipment0.00.00.00.00.00.00.00.00.00.00.0

kmx:LandHeldForDevelopment


Property
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value78738177988515117016811972
Percentage of PropertyPlantAndEquipmentGross1.81.72.02.02.82.85.67.18.16.44.3
Percentage of Assets0.40.30.40.40.60.61.11.51.71.41.1
Percentage of Assets kmx:LandHeldForDevelopment0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Building


Property
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value21982186221120811934165013891244111910331005
Percentage of PropertyPlantAndEquipmentGross49.250.453.654.354.353.551.752.253.955.759.6
Percentage of Assets10.210.411.811.911.911.410.510.611.312.414.7
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value155171125134179224209145899244
Percentage of PropertyPlantAndEquipmentGross3.53.93.03.55.17.37.86.14.35.02.7
Percentage of Assets0.70.80.70.81.11.51.61.20.91.10.7
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value868874789722627510397346275232221
Percentage of PropertyPlantAndEquipmentGross19.420.219.118.817.616.514.814.513.212.513.2
Percentage of Assets4.04.14.24.13.93.53.03.02.82.83.2
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value2912782472151931741461291069583
Percentage of PropertyPlantAndEquipmentGross6.56.46.05.65.45.75.45.45.15.14.9
Percentage of Assets1.41.31.31.21.21.21.11.11.11.11.2
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-02-282012-02-292011-02-28
Value145214141386134212981266123911991173129712631230116411401110108010411010984954925901876849822799778754730707690648576511
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.46.66.66.36.56.06.06.06.06.96.96.86.76.66.66.66.46.46.36.56.46.36.36.26.26.26.36.26.26.36.36.66.97.5

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value30763055304330443064306930362981292628282800276627142667263426022557251824492326223421612105201618961862183317531696165215881535144414281411134713051278988976949920893893
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 Assets13.514.214.514.315.314.614.814.814.815.115.215.215.315.315.215.415.515.515.515.015.114.914.614.513.914.114.314.114.014.114.114.013.814.515.215.215.215.312.913.313.313.513.335.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value164896163150161175160151143128
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.40.30.40.91.11.31.41.51.71.9

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-28
Value4534314394444434494544564660.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.02.02.12.12.22.12.22.32.40.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value314283286282266258201185203185182190185158154147145140137138133149148149138133131128116110112104102107101103981061019899969449
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.31.41.31.31.21.00.91.01.01.01.01.00.90.90.90.90.90.90.90.91.01.01.11.01.01.01.01.00.91.01.01.01.11.11.21.21.31.31.31.41.41.41.9

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value1058799570683390737641628656593558605586529519568510494476486454441420453446454459418433427367346316336272221293324246243288269218253
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.63.72.73.22.03.53.13.13.33.23.03.33.33.03.03.43.13.03.03.13.13.12.93.33.33.43.63.43.63.73.33.23.03.42.92.53.43.93.23.34.03.93.39.9

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value960.21818640.01.3891.4971.389783.7841.634550.00.0141031.4042.0710.205892.0290.3281.169591.5540.4240.244942.4388.5541.808580.2220.2660.557483.125137.451380.7720.5246.327
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.00.10.30.00.00.00.00.40.00.00.30.00.00.10.60.00.00.00.60.00.00.00.40.00.00.00.80.00.10.00.60.00.00.00.60.00.20.10.50.00.00.2

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value40141537235029033134030128831628026625227823325120326622424620524521122618425020220515920213814410914711611610812812310710710311094
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.91.81.61.51.61.71.51.51.71.51.51.41.61.31.51.21.61.41.61.41.71.51.61.31.91.61.71.31.71.21.31.01.51.31.31.31.51.61.51.51.51.63.7

Debt Current

us-gaap:DebtCurrent

us-gaap:DebtCurrent


Debt
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value506452446468439433
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.12.12.22.22.1

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value20931698143715981151153414211396148513111224128312881174111112011166110510271084108310059231001999997928906962875748729710684575525618646531490576508469477
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.27.96.97.55.87.36.96.97.57.06.77.17.36.76.47.17.16.86.57.07.36.96.47.27.37.67.27.37.97.56.66.76.86.96.25.97.27.87.06.78.17.47.018.7

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value109.92710109.7449.2518.5411014100.8380.8150.8120.7720.751122
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.10.10.10.00.00.00.00.04.8

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-28
Value3030303130303030290.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.10.10.10.20.10.20.10.20.0

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-02-28
Value15160146191448114797144161494413776
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.467.969.269.672.270.973.6

us-gaap:LongTermDebt us-gaap:LongtermDebtType

kmx:A3.86seniornotesdues2023


Long
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-29
Value100100100100100100100100100100100100100100100100100100100100600.0
Percentage of LongTermDebt0.70.70.70.70.70.70.00.00.00.70.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.40.50.50.50.50.50.50.50.50.50.50.60.60.60.60.60.60.60.60.60.40.0
Percentage of Assets kmx:A3.86seniornotesdues20230.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:A4.17seniornotesdue2026


Long
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-29
Value2002002002002002002002002002002002002002002002002002002002001200.0
Percentage of LongTermDebt1.31.41.41.41.41.30.00.00.01.50.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.90.91.00.91.00.91.01.01.01.11.11.11.11.11.21.21.21.21.31.30.80.0
Percentage of Assets kmx:A4.17seniornotesdue20260.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:A4.27seniornotesdue2028


Long
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-29
Value2002002002002002002002002002002002002002002002002002002002001200.0
Percentage of LongTermDebt1.31.41.41.41.41.30.00.00.01.50.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.90.91.00.91.00.91.01.01.01.11.11.11.11.11.21.21.21.21.31.30.80.0
Percentage of Assets kmx:A4.27seniornotesdue20280.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevolvingCreditFacility


Long
Period End2020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-02-28
Value1.008575370452377379274366194450.365197245180.693155910.3611.25541510
Percentage of LongTermDebt0.03.92.63.00.00.00.02.70.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.02.71.92.11.81.91.42.01.10.20.01.11.40.10.01.00.60.00.02.90.1
Percentage of Assets us-gaap:RevolvingCreditFacility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value97141768489909362786735
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.70.40.50.50.60.70.50.80.80.5

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

kmx:RestorationPlan


Pension
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value1111101010
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent11.78.413.912.511.6
Percentage of Assets0.10.10.10.10.1
Percentage of Assets kmx:RestorationPlan0.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value86129657478
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent88.391.686.187.588.4
Percentage of Assets0.40.60.40.40.5
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value428434454431391393317299289243242233223242239239231238232226222229229225220225182176168174190181171175145140136148119119123130127117
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.92.02.22.02.01.91.61.51.51.31.31.31.31.41.41.41.41.51.51.51.51.61.61.61.61.71.41.41.41.51.71.71.61.81.61.61.61.81.61.61.71.91.94.6

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-28
Value4464234314354354404464484580.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.02.02.12.02.22.12.22.22.30.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value53515352
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets0.20.20.30.2

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value52505050
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets0.20.20.20.2

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value51495049
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.20.20.20.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value45434848
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0
Percentage of Assets0.20.20.20.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value571529574573
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0
Percentage of Assets2.52.52.72.7

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-05-312021-02-282020-11-302020-08-31
Value477454461466
Percentage of OperatingLeaseLiability100.0100.0100.0100.0
Percentage of Assets2.12.12.22.2

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value813776790801
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets3.63.63.83.8

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-05-312021-02-282020-11-302020-08-31
Value336322329334
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets1.51.51.61.6

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-282009-02-282008-02-29
Value4703436441283982357837683698361134523357343534823383331633003200315231083015306229722904291132103274315631823357332933163288318430753019302329492820267326362552243022912183193315931488
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.620.319.718.717.917.918.117.917.517.918.719.219.119.019.119.019.119.119.119.820.120.120.223.024.023.924.827.127.428.329.129.129.430.532.533.232.832.134.534.733.933.532.675.60.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-282009-02-282008-02-29
Value-115.754-118.691-152.924-160.426-165.405-150.071-82.007-91.63-81.206-68.01-54.137-54.435-55.045-54.312-56.555-70.196-65.391-46.271-59.808-62.459-25.057-19.546-16.86-16.728
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.5-2.7-3.7-4.0-4.6-4.0-2.2-2.5-2.4-2.0-1.6-1.6-1.6-1.6-1.8-2.4-2.1-1.4-2.0-2.3-1.1-1.0-1.1-1.1
Percentage of Assets-0.5-0.6-0.7-0.8-0.8-0.7-0.4-0.5-0.4-0.4-0.3-0.3-0.3-0.3-0.3-0.5-0.5-0.4-0.6-0.7-0.4-0.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-282009-02-282008-02-29
Value152715131462146013581348132113131261123712551265123412341188113011231038972877820746685641
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest32.534.735.436.738.035.835.736.436.536.936.636.436.537.238.238.935.631.332.232.835.838.643.143.1
Percentage of Assets6.77.07.06.96.86.46.56.56.46.66.87.07.07.17.37.88.58.99.810.512.029.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-282009-02-282008-02-29
Value81818182818181828283858788899397104110112113112111110109
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest1.71.92.02.12.32.22.22.32.42.52.52.52.62.73.03.43.33.33.74.24.95.86.97.3
Percentage of Assets0.40.40.40.40.40.40.40.40.40.40.50.50.50.50.60.70.80.91.11.41.74.40.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-282009-02-282008-02-29
Value3209288727372600230324882376230721892104214721822115204718831746199422141993174413831095813754
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest68.266.266.365.364.466.064.363.963.462.762.562.762.561.760.660.163.266.866.065.360.456.751.150.7
Percentage of Assets14.113.413.112.211.511.811.611.511.111.211.712.011.911.711.612.115.118.920.220.920.242.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value8181818281818182828385878889909091939395969798102104104105108109110111111112112114114114113113113113112112111
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 Assets0.40.40.40.40.40.40.40.40.40.40.50.50.50.50.50.50.60.60.60.60.70.70.70.70.80.80.80.90.90.91.01.01.11.11.21.31.31.41.51.51.61.71.74.4

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value15271513146214601358134813211313126112371255126512341234123311931184118811601175113611301136116111701123108010891036103810131000990972942911901877858851836820806746
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.77.07.06.96.86.46.56.56.46.66.87.07.07.17.17.17.27.37.47.67.77.87.98.38.68.58.48.88.58.99.09.19.59.810.110.310.510.511.311.611.712.012.029.2

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value32092887273726002303248823762307218921042147218221152047202819751933188318211858180617461743201220661994204222042229221422192126203019932019197618651744170416211509138312931095
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 Assets14.113.413.112.211.511.811.611.511.111.211.712.011.911.711.711.711.711.611.612.012.212.112.114.415.115.115.917.818.418.919.619.519.420.221.722.321.720.922.322.021.120.219.342.9

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-282009-02-28
Value-115.754-118.691-152.924-160.426-165.405-150.071-82.007-91.63-81.206-68.01-54.137-54.435-55.045-54.312-51.304-59.627-58.229-56.555-60.135-66.582-66.825-70.196-66.664-66.149-66.458-65.391-45.858-44.467-45.776-46.271-57.127-53.909-57.51-59.808-51.745-53.411-60.795-62.459-39.257-33.416-28.007-25.057-29.308-19.546-16.86
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 Assets-0.5-0.6-0.7-0.8-0.8-0.7-0.4-0.5-0.4-0.4-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.3-0.4-0.4-0.5-0.5-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.5-0.5-0.6-0.6-0.6-0.6-0.7-0.7-0.5-0.5-0.4-0.4-0.4-0.80.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

kmx:UnrecognizedActuarialLosses


Accumulated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-282010-02-282009-02-28
Value-92.003-92.662-119.119-119.846-120.574-121.302-69.412-69.767-70.123-70.478-67.388-67.758-68.128-68.497-54.695-54.972-55.247-55.521-55.726-55.973-56.221-56.47-58.253-58.575-58.914-59.22-38.075-38.289-38.502-38.715-48.978-48.953-49.223-49.479-39.137-39.325-39.514-39.774-17.298-17.37-17.528-19.546-16.86
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax79.578.177.974.772.980.884.676.186.4103.6124.5124.5123.8126.1106.692.294.998.292.784.184.180.487.488.688.690.683.086.184.183.785.790.885.682.775.673.665.063.744.152.070.0100.0100.0
Percentage of Assets-0.4-0.4-0.6-0.6-0.6-0.6-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3-0.4-0.4-0.5-0.5-0.4-0.4-0.5-0.5-0.2-0.2-0.3-0.80.0
Percentage of Assets kmx:UnrecognizedActuarialLosses0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:UnrecognizedHedgeLosses


Accumulated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-282010-02-282009-02-28
Value-23.751-26.029-33.805-40.58-44.831-28.769-12.595-21.863-11.0832.468131313143.391-4.655-2.982-1.034-4.409-10.609-10.604-13.726-8.411-7.574-7.544-6.171-7.783-6.178-7.274-7.556-8.149-4.956-8.287-10.329-12.608-14.086-21.281-22.685-21.959-16.046-7.5290.00.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax20.521.922.125.327.119.215.423.913.6-3.6-24.5-24.5-23.8-26.1-6.67.85.11.87.315.915.919.612.611.411.49.417.013.915.916.314.39.214.417.324.426.435.036.355.948.030.0-0.0-0.0
Percentage of Assets-0.1-0.1-0.2-0.2-0.2-0.1-0.1-0.1-0.10.00.10.10.10.10.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.0-0.1-0.0-0.1-0.1-0.1-0.0-0.1-0.1-0.1-0.2-0.2-0.3-0.3-0.2-0.10.00.0
Percentage of Assets kmx:UnrecognizedHedgeLosses0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value209.94212178.74510189.6549.69516
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value209.94212178.74510189.6549.69516
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-111.883-200.626-21.39-359.7831249-118.77.55-168.65743483.745-115.52-59.73779-103.733225.29-13.022-65.07455-6.187
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.5-3.9-0.4-6.738.7-2.40.2-3.20.81.10.1-4.2-2.43.5-4.00.80.2-0.6-2.82.5-0.3

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-63143000.0-6107000.0-29719000.0-27285000.0-65072000.0-132780000.0-77719000.0-92757000.0-86111000.0-61516000.0-72049000.0-20419000.0-100870000.0-44398000.0-34658000.0-39479000.0-34619000.0-16744000.0-25190000.04341000.0-3479000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.8-0.1-0.6-0.5-2.0-2.7-1.6-1.8-1.6-1.4-1.7-0.7-4.1-2.0-1.3-1.5-1.5-0.8-1.10.2-0.2

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value475110-448.229493-579.73727762265803938149219166164132-3.94148131-64.51912
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.22.1-8.69.2-18.05.61.35.11.50.90.95.48.97.46.34.9-0.22.35.6-2.90.7

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value24-16.258-28.127-16.44325-0.358-4.556-5.589.3921.391-1.63-1.0633.6026612-4.5116.7822.908-7.312-0.6467.37425-7.584-11.213109.048-6.817-7.3010.771-12.609-1.376-9.8956.69510-6.493-7.5877.5112.986-8.266-4.438.8385.0414.048-4.84159.449
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value62616160585754515146454445464544434342424036353332302928272724242424242322341715151514141414
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value17465-34.17658-46.072481.6467.212-5.971286.2733.532-31.9737-3.892-5.012-47.64360-2.574-7.964-29.6343-12.302-2.831-34.02749-20.679111711-17.52215-21.50929-7.7664.721-20.72931-10.327-20.209-34.5392726-18.9165.83915
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value91389-44.754925-946.986163775331946797-130.665-49.85720883-112.3169025153-67.038-221.24124167-242.797122255274085192-34.184-119.613178141-12.18311779-48.126-55.03266366-245.8863451188
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-111.883-200.626-21.39-359.7831249-118.77.55-168.65743483.745-115.52-59.73779-103.733225.29-13.022-65.07455-6.187
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.5-3.9-0.4-6.738.7-2.40.2-3.20.81.10.1-4.2-2.43.5-4.00.80.2-0.6-2.82.5-0.3

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-30
Value4362092352964.9782141732332661921902202381221481812111521361621751411281721811431301541699910614014610794111120958211112688821071017574
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.74.14.55.50.24.33.64.55.04.54.44.65.03.03.64.14.73.83.74.14.23.83.64.44.54.13.84.34.53.23.64.34.43.83.64.04.43.83.74.34.73.93.94.64.54.14.3

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value4362352964.978173233266190220238
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.74.55.50.23.64.55.04.44.65.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value414711372510292345137.16925289.516151718191129315.7931110232419221511161522151614151010111510118.496137.161
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 End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-63143000.0-6107000.0-29719000.0-27285000.0-65072000.0-132780000.0-77719000.0-92757000.0-86111000.0-61516000.0-72049000.0-20419000.0-100870000.0-44398000.0-34658000.0-39479000.0-34619000.0-16744000.0-25190000.04341000.0-3479000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.8-0.1-0.6-0.5-2.0-2.7-1.6-1.8-1.6-1.4-1.7-0.7-4.1-2.0-1.3-1.5-1.5-0.8-1.10.2-0.2

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value5940312962827792786172917969727579102100117977495865970103815397769342508156476625493138236.0789.1544.062
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

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments

us-gaap:PaymentsToAcquireInvestments


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-28
Value4.7011.020.1430.1972.369500.1941.027.2240.6770.1640.2125.0940.1247.1810.2891.055-0.2
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value475110-448.229493-579.73727762265803938149219166164132-3.94148131-64.51912
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.22.1-8.69.2-18.05.61.35.11.50.90.95.48.97.46.34.9-0.22.35.6-2.90.7

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-29
Value133711040.01154109116129211271251170211124110157187991981281371674462511172283152011711101749130152510.00.00.0
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber


Share
Period End2020-11-302020-08-312020-02-292019-11-302019-08-312019-02-282016-11-302016-08-312016-02-292012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-28
Value7.0867.1136.9947.5357.7067.8698.4848.3837.32212131412131312
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:AwardType

us-gaap:StockOption


Share
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-05-312017-02-282016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-02-29
Value6.8026.2668.5116.9948.7177.8697.978.1729.1797.7629.527.7539.3057.3227.4197.7377.8247.6459.09.41411101111111012
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber0.00.00.0100.00.0100.00.00.00.00.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:StockOption


Share
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-282018-05-312018-02-282017-05-312017-02-282016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-02-29
Value77.4667.5766.0664.8562.7157.9656.3854.5951.8650.046.6744.6744.2543.643.3535.5934.1733.5630.427.0226.2926.2526.0523.019.84
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

kmx:CashSettledRestrictedStockUnits


Share
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value0.3610.00.0010.00.6690.00.0-0.0005860.5625860.00.0010.00.6299.5e-050.00.0008730.6271270.6319070.00.00.0002110.418070.00.0004790.0003250.5871860.00.07.8e-050.5417410.00.00.00.6442320.00.00.0001090.575271
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.00.0100.00.0100.00.00.0100.0100.00.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.00.00.00.0100.00.00.0100.0100.0

kmx:Othersharebasedincentives


Share
Period End2020-11-302019-11-302018-11-30
Value0.0010.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.00.00.0

kmx:StockSettledRestrictedStockUnits


Share
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value0.0810.0010.0040.00.1950.128376-0.0001320.0020.0019570.2020430.0016180.0030.0003630.1586370.1686810.0027260.0003110.0014340.1055290.000510.0041010.00.245190.00.0009850.0012160.2354590.00.0020.00.3465510.0061560.00.00.292946
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod22.40.0400.00.029.122.80.0200.00.032.11703.20.041.625.326.70.00.0679.625.20.0856.20.041.80.00.01559.043.50.00.00.053.80.00.00.050.9

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value2172201018384603925154339
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value382309162146235222215185166186168
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-282010-02-282009-02-28
Value28282829293031302930313029283030292930272726272726242928272628302625192018201818182125
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value901000.0917000.0677000.0682000.01249000.01807000.01597000.01296000.01110000.02152000.01445000.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt


Proceeds
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-1008000.0170000.0752000.046000.0-381000.0-494000.0244000.0-458000.0693000.0-2860000.02931000.0238000.0-466000.0322000.0-422000.0631000.0-818000.0519000.0-894000.0827000.0392000.0-2086000.01341000.0-4000.0-1789000.0345000.0987000.0660000.0-705000.0-452000.0767000.0617000.0-351000.0-362000.0277000.0-152000.0184000.0-574000.0161000.0170000.0325000.0112000.0412000.0-730000.0693000.0
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:FinanceLeaseCost

kmx:FinanceLeaseCost


Finance
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value7.2496.2354.8294.1523.873.8343.6163.4222.575
Percentage of FinanceLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:ItemAsPercentOfNetSalesAndOperatingRevenues us-gaap:ConcentrationRiskByBenchmark

kmx:ItemAsPercentOfNetSalesAndOperatingRevenues

kmx:DepreciationAndAmortization


Item
Period End2021-05-312020-05-31
Value0.61.5
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues100.0100.0

kmx:EarningsBeforeIncomeTaxes


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value7.406.07.20.001-0.0010.0480.0590.065-0.0010.0580.0610.067-0.0030.0550.0660.074-0.0020.0590.0650.069-0.0010.0590.0720.07400.0620.07
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues1233.30.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:GrossProfit


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value12.0012.214.00.110.0010.1280.1330.13800.1330.1370.138-0.0010.1310.1380.1430.0010.1360.1360.139-0.0010.1310.1340.1350.0010.1310.129
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues2000.00.00.00.07.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:IncomeTaxProvision


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value1.701.51.70-0.0010.0110.0140.01600.0130.0140.017-0.0010.0190.0250.028-0.0010.0220.0250.02600.0230.0280.02800.0240.027
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues283.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:NetEarnings


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value5.704.55.50.00200.0360.0450.05-0.0010.0440.0460.05-0.0030.0360.0410.047-0.0010.0370.0410.042-0.0010.0360.0440.04500.0380.043
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues950.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:NetIncomeLossFromFinancing


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value3.10.33.42.70.01600.0240.0220.02200.0260.0230.02400.0250.0250.024-0.0010.0240.0240.02400.0260.0250.02700.0260.026
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues516.70.00.00.01.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:NetSalesAndOperatingRevenues


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value100.00100.0100.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.01.001.01.0
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues16666.70.00.00.066.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostOfSales


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value88.0087.886.00.89-0.0010.8720.8670.86200.8670.8630.8620.0010.8690.8620.857-0.0010.8640.8640.8610.0010.8690.8660.865-0.0010.8690.871
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues14666.70.00.00.059.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestExpense


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.300.40.40.00700.0050.0040.00300.0040.0040.00400.0040.0040.0040.0010.0040.0030.00300.0030.0020.00200.0020.002
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues50.00.00.00.00.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NonoperatingIncomeExpense


Item
Period End2021-05-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-0.30.0010-0.0010000.00100000000000.001000000
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues-50.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value7.20.39.29.10.11600.1010.0920.0910.0010.0950.0950.0910.0010.0970.0920.0890.0010.0960.0920.09200.0950.0850.0870.0020.0930.083
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues1200.00.00.00.07.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:ItemAsPercentOfNetSalesAndOperatingRevenues us-gaap:ConcentrationRiskByBenchmark, us-gaap:IncomeStatementLocation

kmx:Other, kmx:NetSalesAndOperatingRevenues


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value2.202.83.00.03100.0310.0340.0300.0340.0340.03200.0310.0330.032
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues366.70.00.00.02.10.00.00.00.00.00.00.00.00.00.00.00.0

kmx:Other, us-gaap:CostOfSales


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value0.300.90.70.02100.0120.0110.008-0.0010.0120.0110.0100.0120.0110.007
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues50.00.00.00.01.40.00.00.00.00.00.00.00.00.00.00.00.0

kmx:UsedVehicles, kmx:NetSalesAndOperatingRevenues


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value80.00.381.281.70.8630.0040.8410.8360.8460.0020.8260.8340.83900.8340.8420.846
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues13333.30.00.00.057.50.00.00.00.00.00.00.00.00.00.00.00.0

kmx:UsedVehicles, us-gaap:CostOfSales


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value72.20.373.172.70.7820.0030.7550.7480.7540.0010.740.7440.74700.7450.750.751
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues12033.30.00.00.052.10.00.00.00.00.00.00.00.00.00.00.00.0

kmx:WholesaleVehicles, kmx:NetSalesAndOperatingRevenues


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value17.9-0.316.015.20.106-0.0040.1280.130.123-0.0010.1410.1320.12900.1350.1250.122
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues2983.30.00.00.07.10.00.00.00.00.00.00.00.00.00.00.00.0

kmx:WholesaleVehicles, us-gaap:CostOfSales


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value15.4-0.313.812.60.087-0.0030.1050.1080.1-0.0020.1160.1080.10500.1120.1020.099
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues2566.70.00.00.05.80.00.00.00.00.00.00.00.00.00.00.00.0

kmx:ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly us-gaap:ConcentrationRiskByBenchmark

kmx:ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly

kmx:CarmaxAutoFinanceIncome


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value6.80.55.24.50.01500.0340.0350.037-0.0010.0360.0360.039-0.0010.0360.0390.04-0.0020.0350.0380.041-0.0020.040.0440.05-0.0010.0450.048
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:InterestAndFeeIncome


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value8.808.58.50.08400.0840.0850.08400.080.080.079-0.0010.0760.0770.07600.0750.0760.07600.0740.0760.076-0.0010.0760.078
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly129.40.0163.5188.9560.00.0247.1242.9227.0-0.0222.2222.2202.6100.0211.1197.4190.0-0.0214.3200.0185.4-0.0185.0172.7152.0100.0168.9162.5

kmx:InterestIncomeExpenseNet


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value6.906.36.00.05900.0570.0570.056-0.0010.0560.0570.057-0.0010.0570.0580.058-0.0010.0580.0590.059-0.0010.060.0620.06300.0640.066
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly101.50.0121.2133.3393.30.0167.6162.9151.4100.0155.6158.3146.2100.0158.3148.7145.050.0165.7155.3143.950.0150.0140.9126.0-0.0142.2137.5

kmx:OtherDirectExpenses


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-0.40-0.4-0.4-0.0040-0.004-0.005-0.0050-0.004-0.004-0.0040-0.004-0.004-0.0040-0.004-0.004-0.0040-0.004-0.004-0.0040-0.004-0.004
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly-5.90.0-7.7-8.9-26.70.0-11.8-14.3-13.5-0.0-11.1-11.1-10.3-0.0-11.1-10.3-10.0-0.0-11.4-10.5-9.8-0.0-10.0-9.1-8.0-0.0-8.9-8.3

kmx:PayrollAndFringeBenefitExpense


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-0.40-0.3-0.3-0.0030-0.003-0.003-0.0030-0.003-0.003-0.0030-0.003-0.003-0.0030-0.003-0.003-0.0030-0.003-0.003-0.0030-0.003-0.003
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly-5.90.0-5.8-6.7-20.00.0-8.8-8.6-8.1-0.0-8.3-8.3-7.7-0.0-8.3-7.7-7.5-0.0-8.6-7.9-7.3-0.0-7.5-6.8-6.0-0.0-6.7-6.2

kmx:ProvisionForLoanLosses


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.70.4-0.2-0.8-0.0360-0.015-0.014-0.012-0.001-0.013-0.013-0.010-0.013-0.012-0.011-0.001-0.016-0.014-0.011-0.001-0.013-0.011-0.0060-0.012-0.011
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly10.380.0-3.8-17.8-240.00.0-44.1-40.0-32.4100.0-36.1-36.1-25.6-0.0-36.1-30.8-27.550.0-45.7-36.8-26.850.0-32.5-25.0-12.0-0.0-26.7-22.9

kmx:TotalDirectExpenses


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-0.8-0.1-0.8-0.8-0.0070-0.008-0.008-0.0080-0.007-0.008-0.0070-0.008-0.007-0.0070-0.007-0.007-0.0070-0.007-0.007-0.0070-0.007-0.007
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly-11.8-20.0-15.4-17.8-46.70.0-23.5-22.9-21.6-0.0-19.4-22.2-17.9-0.0-22.2-17.9-17.5-0.0-20.0-18.4-17.1-0.0-17.5-15.9-14.0-0.0-15.6-14.6

kmx:TotalInterestMarginAfterProvisionForLoanLosses


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value7.60.56.05.20.02300.0420.0430.044-0.0010.0430.0440.047-0.0010.0440.0460.048-0.0020.0410.0450.048-0.0010.0470.0510.057-0.0010.0520.055
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly111.8100.0115.4115.6153.30.0123.5122.9118.9100.0119.4122.2120.5100.0122.2117.9120.0100.0117.1118.4117.150.0117.5115.9114.0100.0115.6114.6

us-gaap:InterestExpense


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-1.90.1-2.3-2.5-0.0250.001-0.027-0.028-0.028-0.001-0.024-0.023-0.0220-0.02-0.019-0.0180-0.017-0.017-0.0160-0.014-0.014-0.0130-0.012-0.012
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly-27.920.0-44.2-55.6-166.70.0-79.4-80.0-75.7100.0-66.7-63.9-56.4-0.0-55.6-48.7-45.0-0.0-48.6-44.7-39.0-0.0-35.0-31.8-26.0-0.0-26.7-25.0

kmx:NetIncomeLossFromFinancing

kmx:NetIncomeLossFromFinancing


Net
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-31
Value241188176147501111141141161031091091151011021071098289951009292981099089929480838487757275756662636954555257
Percentage of NetIncomeLossFromFinancing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:PaymentsOnNonRecourseDebt

kmx:PaymentsOnNonRecourseDebt


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-30
Value30142713291126082420289726692649249225662556253523432320255022762149209521922154195219312141176826561610180716241518132815301392126113661365139155612781597
Percentage of PaymentsOnNonRecourseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:PaymentsOnRevolvingLineOfCreditAndLongTermDebt

kmx:PaymentsOnRevolvingLineOfCreditAndLongTermDebt


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-31
Value3911945973621062149614171475180913841305441101512531217772917124925917120810685530.0306750.00.00.0
Percentage of PaymentsOnRevolvingLineOfCreditAndLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.0

kmx:ProceedsFromIssuanceOfNonRecourseDebt

kmx:ProceedsFromIssuanceOfNonRecourseDebt


Proceeds
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-30
Value36102858314928161982319028482897285127092697281826682477273325772410237523912585225921232324205930471901207919061897160717701756177418411665164769814971764
Percentage of ProceedsFromIssuanceOfNonRecourseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:ProceedsFromRevolvingLineOfCreditAndLongTermDebt

kmx:ProceedsFromRevolvingLineOfCreditAndLongTermDebt


Proceeds
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-31
Value38819219565977157014141578171515561457483817120614447907621314349217109391911170.0206853000.00.0
Percentage of ProceedsFromRevolvingLineOfCreditAndLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.0

kmx:ProvisionForContractCancellationReserves

kmx:ProvisionForContractCancellationReserves


Provision
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-31
Value3418172213241920258.9851618201116171712151718161822201715172141169.2019.123
Percentage of ProvisionForContractCancellationReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:RepaymentsOfLongTermFinanceAndCapitalLeaseObligations

kmx:RepaymentsOfLongTermFinanceAndCapitalLeaseObligations


Repayments
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value2.7891.9911.511.371.1190.9490.7452.7652.4282.4212.3982.2932.2292.2072.2682.412.4912.8763.043.1073.5695.0894.6524.8484.6834.5084.2044.6334.0317.1363.7963.7183.6443.4253.2963.2293.2383.0962.997
Percentage of RepaymentsOfLongTermFinanceAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:SharebasedCompensationArrangementbySharebasedPaymentAwardPaymentsUponVesting us-gaap:AwardType

kmx:SharebasedCompensationArrangementbySharebasedPaymentAwardPaymentsUponVesting

kmx:CashSettledRestrictedStockUnits


Sharebased
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-31
Value893436202522
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardPaymentsUponVesting100.0100.0100.0100.0100.0100.0

kmx:Totalaveragemanagedreceivables

kmx:Totalaveragemanagedreceivables


Totalaveragemanagedreceivables
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-31
Value141481351713218134081323913012127071232112067117751136511112108291029710049974592618993
Percentage of Totalaveragemanagedreceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:WarehouseFacilityCapacityIncrease us-gaap:DebtInstrument, us-gaap:SubsequentEventType

kmx:WarehouseFacilityCapacityIncrease

kmx:WarehouseFacilityThree, us-gaap:SubsequentEvent


Warehouse
Period End2020-09-30
Value175
Percentage of WarehouseFacilityCapacityIncrease100.0

us-gaap:AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease

us-gaap:AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease


Allowance
Period End2021-05-31
Value-31600000.0
Percentage of AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-31
Value-2.568-54.457-1.95951-20.778-0.7632.377-0.6422.868-1.2193.662-6.1540.6454.316-0.232-1.787-1.077-14.90920-0.955-10.6349.659-2.6353.3785.82-12.84-1.63528-10.338-8.6010.324181.025
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value300-96.496-499.33810660426-7.5794.2583726-29.831-22.0576629-14.653-15.37431
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument, us-gaap:HedgingDesignation

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

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


Cash
Period End2021-05-312020-11-30
Value-15.52.6
Percentage of CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-05-312020-05-31
Value4948
Percentage of DepreciationAndAmortization100.0100.0

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:FinancialInstrument, us-gaap:HedgingDesignation

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:CashFlowHedging, us-gaap:InterestRateSwap, us-gaap:Nondesignated


Derivative
Period End2021-05-312021-02-282020-11-302020-08-31
Value-300000.0-3800000.0-100000.0300000.0
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0

us-gaap:DirectOperatingCosts

us-gaap:DirectOperatingCosts


Direct
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value2727262523282525242321232221212019191716171615151417141313121212121111101011111111
Percentage of DirectOperatingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

kmx:CashSettledRestrictedStockUnits


Employee
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value249.410.05.610
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits


Employee
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value103.03.81.47.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions44.331.938.025.067.3

us-gaap:StockOption


Employee
Period End2021-05-312020-05-312019-05-312018-05-312017-05-31
Value6.90.25.31.21.3
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions28.02.153.021.412.5

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


Finance
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value4.1073.3962.682.4332.2152.1792.0531.9691.477
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeaseInterestPaymentOnLiability


Finance
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value2699000.02545000.02100000.01995000.01877000.01455000.0991000.0815000.0766000.0
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value2788000.02553000.01991000.01510000.01370000.01338000.01119000.0949000.0745000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


Finance
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value3142000.02839000.02149000.01719000.01655000.01655000.01563000.01453000.01098000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingInterestExpense

us-gaap:FinancingInterestExpense


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value6571778184899090878175696358555249464441393533302824242323222222222223232525252628
Percentage of FinancingInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value3430402326363534363333283333292731282625282424212222221821181818181714141416141415
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value415549537085817665767464587168605466625545515142344343363239363126302824-20.6-159.82423-19.3
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets

us-gaap:GainLossOnDispositionOfAssets


Gain
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value217.375-0.8680.288-5.386-3.5793.79-1.982-1.7361.279-2.7460.11-1.468-0.075-0.21-0.392-0.621-2.051-1.816-0.034-0.268-10.129-1.197-1.733-0.077-1.366-1.569-0.493-0.424-0.424-0.914-1.1080.178-3.5491.1080.2540.1921.2380.1361.386-0.191-0.7-0.7590.619-0.303-0.013
Percentage of GainLossOnDispositionOfAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value315230-149.004407-382.1026447-108.5188164-35.403-24.098147-76.312145266-51.354-20.7576654-50.538-27.662-31.0436819-76.4764011515-14.4460.53310229-124.828-7.6416420-83.0154039-22.5-50.2512444
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInFinanceReceivables

us-gaap:IncreaseDecreaseInFinanceReceivables


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-30
Value644227262244-433.044328259334386171199337337197242312325309243313343249232329390319318316415278246373425359254195181163123
Percentage of IncreaseDecreaseInFinanceReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInOtherCurrentAssets


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-30
Value9.87329-9.787-33.4613-22.026-6.58338108.062-18.791-15.355-6.806294.3596.514-5.451-3.021-11.191124.031-2.832-14.3216-14.423-5.1141012-0.6646.499-4.2268.039-7.293-4.0842.73111-7.2428.119-12.39
Percentage of IncreaseDecreaseInOtherCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value2853000.01565000.03339000.03247000.05236000.0-21770000.06349000.0496000.0-433000.04089000.03078000.02013000.0431000.0726000.0-809000.01050000.0-461000.0-333000.0-399000.0428000.0103000.0-314000.0-57000.0-3735000.02597000.03780000.0-3467000.040000.0-22000.04144000.02592000.01216000.01477000.01254000.0-2225000.01911000.03278000.0-1151000.02948000.012774000.0-10672000.01861000.02827000.0-2207000.0
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-57905000.0-34315000.0-3834000.04777000.0-31797000.0-22922000.0-19421000.0-20154000.0-47330000.0-16458000.0-7790000.0-17107000.0-48354000.0-14400000.0-22132000.0-16149000.0-29469000.0-13148000.0-13975000.0-18248000.0-31999000.0-18229000.0-16789000.0-18430000.0-33659000.0-17379000.0-14441000.0-15974000.0-30252000.0-80271000.03907000.05678000.0-9851000.09665000.01211000.0747000.0-15178000.05824000.0-2569000.0-4530000.0-10377000.02762000.0-4983000.06657000.0-3051000.03475000.0
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

kmx:StockSettledStockUnitsAndAwards


Incremental
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-31
Value615000.0405000.0331000.0337000.0441000.0339000.0319000.0396000.0454000.0357000.0486000.0363000.0450000.0427000.0485000.0474000.0540000.0551000.0796000.0692000.0621000.0592000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeStockOption


Incremental
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value2529000.01636000.01858000.0527000.01820000.01579000.01000000.01109000.01462000.0925000.01659000.01465000.01209000.01191000.01599000.01248000.0-177000.01552000.01848000.02158000.0-13000.02105000.02269000.02772000.0-50000.03402000.03319000.03194000.0-38000.03210000.02958000.03433000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements411.2404.0561.3156.4412.7465.8313.5280.1322.0259.1341.4403.6268.7278.9329.7263.30.0287.4335.4271.10.0304.2365.4468.20.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss


Interest
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value26821520317275140139139140127131133137122124128129102106112118109108113123107103106108939696998783868677737480
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidCapitalized

us-gaap:InterestPaidCapitalized


Interest
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-31
Value1.91.20.70.50.92.01.71.71.61.61.71.71.41.12.12.01.72.83.12.72.61.62.02.82.88.90.00.00.0
Percentage of InterestPaidCapitalized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value1211111111111010109.79.49.69.69.28.98.88.57.97.57.77.67.27.17.16.86.56.36.36.25.95.65.65.55.35.25.45.35.25.15.15.3
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value212019181818171717
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value141414141414141414
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value131414141414141414
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value-0.659-26.457-0.727-0.728-0.72851-0.355-0.356-0.3553.09-0.37-0.37-0.3692.197-0.277-0.275-0.274-0.205-0.247-0.248-0.249-1.783-0.322-0.339-0.30621-0.214-0.213-0.213-10.2630.025-0.27-0.25610-0.188-0.189-0.26
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value2.2787.7766.7754.251-16.062-16.1749.268-10.78-13.551-10.783-0.0720.24-1.1029.7698.046-1.673-1.9483.3756.2-0.0053.122-5.315-0.837-0.03-1.3731.612-1.6051.0960.2820.593-3.1933.3312.0422.2791.4787.1951.404
Percentage of OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-31
Value-1.478292.1160.058-18.287-70.0787.747-11.354-13.2-12.951.4631.61-0.2857.1527.496-2.251-2.5622.0364.419-1.8981.415-5.295-2.017-1.186-2.618-20.892-2.746-0.164-1.0919.251-4.7861.7510.281
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax us-gaap:StatementEquityComponents

kmx:UnrecognizedHedgeLosses


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-31
Value-1.4783.4972.1160.058-18.287-17.8247.747-11.354-13.2-9.4911.4631.61-0.2859.6987.496-2.251-2.5622.0554.419-1.8981.415-6.757-2.017-1.186-2.6180.466-2.746-0.164-1.091-0.749-4.4991.7510.281
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.012.0100.0100.0100.025.4100.0100.0100.073.3100.0100.0100.0135.6100.0100.0100.0100.9100.0100.0100.0127.6100.0100.0100.0-2.2100.0100.0100.0-8.194.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax


Other
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-31
Value2278000.06775000.04251000.0-16062000.09268000.0-10780000.0-13551000.0-72000.0240000.0-1102000.08046000.0-1673000.0-1948000.06200000.0-5000.03122000.0-837000.0-30000.0
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value2.937347.5024.979-15.334-68.0649.623-10.424-13.196-13.8730.2980.61-0.7337.5728.323-1.398-1.6743.586.4470.2433.371-3.532-0.5150.309-1.067-19.533-1.3911.3090.49510-3.2183.6012.298-8.0631.6667.3841.664-23.202-5.841-5.409-2.95
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value-5098000.0-5781000.0-6334000.0-5701000.0-3025000.0-2244000.0-2067000.0-780000.0477000.01755000.02084000.01861000.01109000.0-138000.0-906000.0-952000.0-1013000.0-2170000.0-2935000.0-3120000.0-2813000.0-2375000.0-1944000.0-1907000.0-2051000.0-1898000.0-1881000.0-2076000.0-2263000.0-2207000.0-2155000.0-2605000.0-2905000.0-3126000.0-3327000.0-3293000.0-3235000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value-3756000.0-4279000.0-4659000.0-4193000.0-2225000.0-1650000.0-1521000.0-574000.0351000.01292000.01535000.01370000.0817000.0-71000.0-550000.0-578000.0-614000.0-1320000.0-1781000.0-1893000.0-1707000.0-1442000.0-1180000.0-1156000.0-1245000.0-1146000.0-1141000.0-1260000.0-1373000.0-1342000.0-1306000.0-1580000.0-1761000.0-1885000.0-2021000.0-730000.0-3235000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value-1342000.0-1502000.0-1675000.0-1508000.0-800000.0-594000.0-546000.0-206000.0126000.0463000.0549000.0491000.0292000.0-67000.0-356000.0-374000.0-399000.0-850000.0-1154000.0-1227000.0-1106000.0-933000.0-764000.0-751000.0-806000.0-752000.0-740000.0-816000.0-890000.0-865000.0-849000.0-1025000.0-1144000.0-1241000.0-1306000.0-2563000.00
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value-868000.0-959000.0-959000.0-960000.0-959000.0-469000.0-468000.0-469000.0-468000.0-488000.0-487000.0-487000.0-487000.0-454000.0-454000.0-453000.0-454000.0-386000.0-387000.0-386000.0-387000.0-514000.0-514000.0-540000.0-489000.0-341000.0-340000.0-340000.0-340000.0-419000.0-418000.0-429000.0-408000.0-300000.0-300000.0-300000.0-300000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax us-gaap:IncomeStatementLocation

kmx:CarmaxAutoFinance


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-31
Value-22000.0-25000.0-27000.0-25000.0-31000.0-13000.0-12000.0-12000.0-12000.0-13000.0-13000.0-12000.0-13000.0-12000.0-12000.0-11000.0-11000.0-9000.0-10000.0-9000.0-9000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax2.52.62.82.63.22.82.62.62.62.72.72.52.72.62.62.42.42.32.62.32.3

us-gaap:CostOfSales


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-31
Value-357000.0-405000.0-402000.0-437000.0-373000.0-196000.0-203000.0-201000.0-197000.0-201000.0-206000.0-204000.0-201000.0-188000.0-189000.0-187000.0-185000.0-160000.0-160000.0-160000.0-157000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax41.142.241.945.538.941.843.442.942.141.242.341.941.341.441.641.340.741.541.341.540.6

us-gaap:SellingGeneralAndAdministrativeExpenses


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-31
Value-489000.0-529000.0-530000.0-498000.0-555000.0-260000.0-253000.0-256000.0-259000.0-274000.0-268000.0-271000.0-273000.0-254000.0-253000.0-255000.0-258000.0-217000.0-217000.0-217000.0-221000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax56.355.255.351.957.955.454.154.655.356.155.055.656.155.955.756.356.856.256.156.257.1

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value-659000.0-728000.0-727000.0-728000.0-728000.0-364000.0-355000.0-356000.0-355000.0-369000.0-370000.0-370000.0-369000.0-349000.0-277000.0-275000.0-274000.0-224000.0-247000.0-248000.0-249000.0-321000.0-322000.0-339000.0-306000.0-213000.0-214000.0-213000.0-213000.0-263000.0-262000.0-270000.0-256000.0-114000.0-188000.0-189000.0-260000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value-209000.0-231000.0-232000.0-232000.0-231000.0-105000.0-113000.0-113000.0-113000.0-119000.0-117000.0-117000.0-118000.0-105000.0-177000.0-178000.0-180000.0-162000.0-140000.0-138000.0-138000.0-193000.0-192000.0-201000.0-183000.0-128000.0-126000.0-127000.0-127000.0-156000.0-156000.0-159000.0-152000.0-186000.0-112000.0-111000.0-40000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value-2.0064.7842.8770.079-24.862-24.23910-15.431-17.942-12.8891.9862.187-0.3871312-3.712-4.2263.3947.282-3.1292.331-11.119-3.325-1.955-4.3160.747-4.525-0.271-1.798-1.217-7.4212.890.4620.595-0.894-3.38-3.012
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-31
Value-1.4783.4972.1160.058-18.287-17.8247.747-11.354-13.2-9.4911.4631.61-0.2859.6987.496-2.251-2.5622.0554.419-1.8981.415-6.757-2.017-1.186-2.6180.466-2.746-0.164-1.091-0.749-4.4991.7510.2810.394-0.5436.465-1.831-3.689-9.209-6.064-4.1251.061-4.579-5.479
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value-0.5281.2870.7610.021-6.575-6.4152.782-4.077-4.742-3.3980.5230.577-0.1023.8324.865-1.461-1.6641.3392.863-1.2310.916-4.362-1.308-0.769-1.6980.281-1.779-0.107-0.707-0.468-2.9221.1390.1810.201-0.351-9.8451.181-0.6666.927-4.2182.288
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value1415151411171415141412131212121111119.89.09.79.68.77.97.3107.87.57.36.66.96.76.96.46.25.45.56.26.26.36.1
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNonoperatingExpense

us-gaap:OtherNonoperatingExpense


Other
Period End2020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312017-11-302017-08-312016-11-302016-08-312015-11-302015-08-312014-11-30
Value0300000.01900000.0000100000.0300000.00000300000.0100000.00
Percentage of OtherNonoperatingExpense0.0100.0100.00.00.00.0100.0100.00.00.00.00.0100.0100.00.0

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


Payments
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-02-28
Value3.915.4994.765.4272.615.2533.9877.4463.4164.7344.144.5423.6474.7373.9014.7032.924.553.5594.3294.680.00.1232.9810.01.686-0.4960.0
Percentage of PaymentsOfDebtIssuanceCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.00.0

us-gaap:ProceedsFromIssuanceOrSaleOfEquity

us-gaap:ProceedsFromIssuanceOrSaleOfEquity


Proceeds
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value21482.571901.706289.84653333.557.078389.0526.97142176.608251.528284.1342.1837.6981917359.847370.12195.2143.5491133251.682.529100.6776.494-2.1326.332251.0325.3557.989
Percentage of ProceedsFromIssuanceOrSaleOfEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments


Proceeds
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-28
Value86000.05586000.01358000.01213000.0168000.0554000.0305000.0639000.081000.0474000.0200000.0827000.077000.01226000.096000.0132000.0238000.0412000.0
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-02-282010-02-28
Value0.01.020.8260.00.00.00.0010.0020.0120.1150.2450.320.0010.00.0960.00.5010.7260.0020.00.0220.1010.01.4190.0360.0045.8290.0-0.0480.4270.1064.610.00.00.00.00.0080.00.583
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment0.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.00.00.0100.00.0100.0

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets


Proceeds
Period End2021-05-31
Value0.617
Percentage of ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets100.0

us-gaap:ProceedsFromStockOptionsExercised us-gaap:AwardType

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:StockOption


Proceeds
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-31
Value211.7339.16.64.1
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanAndLeaseLosses

us-gaap:ProvisionForLoanAndLeaseLosses


Provision
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-28
Value-24.3754.5568.1725122534845384240393038373228464135263130251322242015231918111618129.176111510-1.0479.2998.5679.0030.880.0
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses

us-gaap:ProvisionForLoanLeaseAndOtherLosses


Provision
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value-24.44.68.226122534945384240403038373228464135263130251322242015231918111618129.2111510-1.0
Percentage of ProvisionForLoanLeaseAndOtherLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses kmx:Provisionbreakout

kmx:CurrentPeriodOriginations


Provision
Period End2020-11-302020-08-312020-05-31
Value645538
Percentage of ProvisionForLoanLeaseAndOtherLosses780.5213.831.1

kmx:ExistingOriginations


Provision
Period End2020-11-302020-08-31
Value5529
Percentage of ProvisionForLoanLeaseAndOtherLosses680.5113.8

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


Reclassification
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-31
Value-4415000.0-5007000.0-5386000.0-4921000.0-2953000.0-2014000.0-1876000.0-930000.0-4000.0923000.01165000.01000000.0448000.0-420000.0-827000.0-853000.0-888000.0-1544000.0-2028000.0-2141000.0-1956000.0-1763000.0-1502000.0-4597000.01551000.01359000.01355000.01473000.01586000.01605000.01568000.01850000.02017000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

kmx:UnrecognizedActuarialLosses


Reclassification
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-31
Value-659000.0-728000.0-727000.0-728000.0-728000.0-364000.0-355000.0-356000.0-355000.0-369000.0-370000.0-370000.0-369000.0-349000.0-277000.0-275000.0-274000.0-224000.0-247000.0-248000.0-249000.0-321000.0-322000.0-951000.0306000.0213000.0214000.0213000.0213000.0263000.0262000.0270000.0256000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax14.914.513.514.824.718.118.938.38875.0-40.0-31.8-37.0-82.483.133.532.230.914.512.211.612.718.221.420.719.715.715.814.513.416.416.714.612.7

kmx:UnrecognizedHedgeLosses


Reclassification
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-31
Value-3756000.0-4279000.0-4659000.0-4193000.0-2225000.0-1650000.0-1521000.0-574000.0351000.01292000.01535000.01370000.0817000.0-71000.0-550000.0-578000.0-614000.0-1320000.0-1781000.0-1893000.0-1707000.0-1442000.0-1180000.0-3646000.01245000.01146000.01141000.01260000.01373000.01342000.01306000.01580000.01761000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax85.185.586.585.275.381.981.161.7-8775.0140.0131.8137.0182.416.966.567.869.185.587.888.487.381.878.679.380.384.384.285.586.683.683.385.487.3

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability


Right
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value101514104.8591.0098.4490.39243
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-31
Value300.362.918.4052.3352.1075.892-2.49221
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

kmx:CashSettledRestrictedStockUnits


Share
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value27000.024000.019000.036000.017000.020000.020000.038000.031000.022000.042000.042000.032000.023000.024000.041000.017000.025000.022000.029000.023000.024000.026000.036000.029000.019000.027000.030000.021000.023000.041000.032000.026000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits


Share
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value1000.005000.0-2000.05000.003000.01000.05000.010000.010000.02000.03000.02000.002000.00021000.05000.0001000.00-3000.07000.02000.002000.04000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod3.70.026.3-5.629.40.013.62.411.931.243.58.37.311.80.09.10.00.087.519.20.00.05.30.0-10.033.38.70.06.215.4

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

kmx:CashSettledRestrictedStockUnits


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value80.6168.9461.0558.4257.110.781.464.4644.590.260.431.0537.810.190.461.333.00.170.451.1327.55
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value114.0290.63073.6374.76090.46000.7947.31000.6500.9245.22-0.10-0.0340.8
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue141.4131.50.0126.0130.90.06195.90.00.0303.811002.30.00.0342.10.070.8137.0-58.80.0-2.7148.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

kmx:CashSettledRestrictedStockUnits


Share
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-31
Value136.940.010.01071.070.010078.6100.010.0263.04000.0158.3851.6300073.7600044.9600042.6800031.7600032.69
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.00.0100.0100.00.00.0100.00.0100.0100.0100.00.00.0100.0100.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0

kmx:Othersharebasedincentives


Share
Period End2020-11-302019-11-302018-11-30
Value0.300
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue3000.00.00.0

kmx:StockSettledRestrictedStockUnits


Share
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-05-31
Value178.310.120.59093.1198.4300.10.1381.860.050.450.0173.5863.97-0.58-0.05-0.190.460.060.05055.3700.040.0351.950-0.03040.36-0.145.58
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue130.21200.05900.00.0131.0125.20.01000.0650.0129.90.00.0100.0126.0123.90.00.00.0122.60.00.00.0123.20.00.00.0121.70.00.00.0127.10.0139.4

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

kmx:CashSettledRestrictedStockUnits


Share
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value701000.013000.07000.014000.0491000.01000.08000.05000.0491000.02000.02000.010000.0329000.03000.03000.04000.0459000.0428000.07000.06000.02000.0514000.04000.07000.05000.0458000.01000.05000.07000.0552000.01000.05000.04000.0776000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits


Share
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value194000.01000.04000.00144000.0148000.02000.01000.02000.092000.04000.05000.02000.0221000.0210000.0-2000.014000.08000.0319000.06000.07000.08000.0281000.03000.0021000.0261000.0002000.0385000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod27.77.757.10.029.330.1100.050.020.028.0133.3166.750.048.149.1-28.6233.3400.062.1150.0100.0160.061.4300.00.0300.047.30.00.050.049.6

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

kmx:CashSettledRestrictedStockUnits


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value65.4158.4651.6673.5745.042.760.270.20.1131.770.060.10.0632.710.020.090.1125.420.020.120.0911.44
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value81.8673.5863.9790.4655.4252.0-0.070.490.1940.7200.040.0845.570.100.3236.24000.1316.54
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue125.1125.9123.8123.0123.2121.6-25.9245.0172.7128.20.040.0133.3139.3500.00.0290.9142.60.00.0144.4144.6

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-28
Value37.00.5610.2950.3140.3270.33900.00800.310000.3270000.4680000.5140.0100.0010.5090.003
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum100.0100.0100.0100.0100.0100.00.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.0100.00.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-28
Value31.80.3610.2730.290.2940.30400-0.0190.2770000.2520-0.00200.2810-0.01300.32400-0.0090.3570
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum100.0100.0100.0100.0100.0100.00.00.0100.0100.00.00.00.0100.00.0100.00.0100.00.0100.00.0100.00.00.0100.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-28
Value1.30.0050.0240.0290.0210.016000.0020.0190000.027000.0090.0170000.020000.0350
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum100.0100.0100.0100.0100.0100.00.00.0100.0100.00.00.00.0100.00.00.0100.0100.00.00.00.0100.00.00.00.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-30
Value36.20.3830.2930.2910.2980.3080000.3060-0.00100.31900-0.0010.4480000.4940000.49300
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.00.0100.00.00.0100.0100.00.00.00.0100.00.00.00.0100.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:StockOption


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-30
Value280.9194.23.24.93.410.04.05353147510275.26.12330251.51010.00.7
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod


Share
Period End2020-11-30
Value15000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod us-gaap:AwardType

us-gaap:StockOption


Share
Period End2021-05-31
Value6000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:StockOption


Share
Period End2021-05-31
Value81.99
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod

us-gaap:StockOption


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value917000.01571000.01575000.01720400.01930000.02154700.017479.02287.014648.01374000.05870.047681.002003200.003450.032582.01569100.0018500.053867.02179800.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross


Share
Period End2020-11-30
Value31000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue


Share
Period End2020-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-30
Value0.16-0.0612.74-0.040013.840.020
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.00.00.0100.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:StockOption


Share
Period End2021-05-312020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-29
Value42.3322.6122.0818.7116.1114.19-0.06-0.01-0.0120.610.030.04013.21000.0415.550-0.01-0.0612.74-0.04
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:StockOption


Share
Period End2021-05-31
Value57.6
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:StockOption


Share
Period End2021-05-31
Value136.93
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue


Sharebased
Period End2020-11-30
Value0.06
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Stock
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value254000.05000.04000.0154000.01000.09000.0142000.001000.068000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised


Stock
Period End2020-11-302019-11-30
Value-43000.0178000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:AwardType

us-gaap:StockOption


Stock
Period End2021-05-312020-05-312019-05-31
Value375000.035000.0727000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised0.00.00.0

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:CommonStock


Stock
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value375000.043000.01403000.035000.0178000.01008000.0727000.0153000.0860000.0212000.0
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised0.0-100.00.00.0100.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value-17975000.0-149000.0-12000.0-5552000.0-54000.0-38000.0-5149000.0-19000.0-61000.0-2168000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value-18102000.0-152000.0-14000.0-5629000.0-55000.0-42000.0-5220000.0-19000.0-62000.0-2202000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.7102.0116.7101.4101.9110.5101.4100.0101.6101.6

us-gaap:CommonStock


Stock
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value127000.03000.02000.077000.01000.04000.071000.001000.034000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation-0.7-2.0-16.7-1.4-1.9-10.5-1.4-0.0-1.6-1.6

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value212.57901.7069.84653337.079389.052
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value212.549891.6889.75752327.002388.946
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised99.199.299.298.999.199.198.998.998.998.8

us-gaap:CommonStock


Stock
Period End2021-05-312020-11-302020-08-312020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value0.1870.0210.7010.0180.0890.5040.3630.0770.430.106
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised0.90.80.81.10.90.91.11.11.11.2

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:CommonStock


Stock
Period End2021-05-312020-11-302020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value0.9981.1760.5151.271.5262.9533.6582.2913.308
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue


Stock
Period End2021-05-312020-11-302020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value12410940114128204254171207
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-05-312020-11-302020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value9.348104.271101121261622
Percentage of StockRepurchasedAndRetiredDuringPeriodValue7.59.610.58.99.310.710.59.511.0

us-gaap:CommonStock


Stock
Period End2021-05-312020-11-302020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value0.4990.5880.2580.6350.7631.4761.8291.1461.654
Percentage of StockRepurchasedAndRetiredDuringPeriodValue0.40.50.60.60.60.70.70.70.8

us-gaap:RetainedEarnings


Stock
Period End2021-05-312020-11-302020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value1149836104115181225153182
Percentage of StockRepurchasedAndRetiredDuringPeriodValue92.189.888.990.690.188.588.889.888.2

us-gaap:TreasuryStockAcquiredAverageCostPerShare us-gaap:AwardType

us-gaap:TreasuryStockAcquiredAverageCostPerShare

kmx:ShareRepurchaseProgram


Treasury
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value124.832.2292.9078.962.6490.3884.1369.35-2.1469.5274.762.690.5672.0263.7860.01.9652.5653.1851.39-1.5558.0364.467.492.3352.4849.9245.330.9247.3946.5442.292.24
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockSharesAcquired us-gaap:AwardType

us-gaap:TreasuryStockSharesAcquired

kmx:ShareRepurchaseProgram


Treasury
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value0.99760.68851.17580.00.51551.22221.27031.52552.95314.37763.65782.29173.30761.9211.48842.45313.03471.54733.78052.36522.56962.9647.68083.87841.77693.4094616.2347994.0248013.8419392.5542070.3130421.0466292.9456224.0177
Percentage of TreasuryStockSharesAcquired100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesChargedToCostAndExpense

us-gaap:ValuationAllowancesAndReservesChargedToCostAndExpense


Valuation
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-31
Value3418172213241920258.916182011161717151718182220151721169.29.1
Percentage of ValuationAllowancesAndReservesChargedToCostAndExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesDeductions

us-gaap:ValuationAllowancesAndReservesDeductions


Valuation
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-31
Value2017171614191817181517161615161616161616161414121212108.58.5
Percentage of ValuationAllowancesAndReservesDeductions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding

dei:EntityCommonStockSharesOutstanding


Entity
Period End2021-06-242021-03-312020-12-312020-09-30
Value162163162164
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0

dei:EntityPublicFloat

dei:EntityPublicFloat


Entity
Period End2020-08-31
Value17553
Percentage of EntityPublicFloat100.0

kmx:AccumulatedOtherComprehensiveIncomeLossDeferredTaxes

kmx:AccumulatedOtherComprehensiveIncomeLossDeferredTaxes


Accumulated
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-05-312014-05-312013-05-312012-11-302012-08-312012-05-312012-02-29
Value3738495254482629262116161616303534333640404239273431322524
Percentage of AccumulatedOtherComprehensiveIncomeLossDeferredTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:CancellationReservesCurrentPortion

kmx:CancellationReservesCurrentPortion


Cancellation
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-05-312015-02-28
Value535866666263605958555858575657575656575756544744
Percentage of CancellationReservesCurrentPortion100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:DeferredTaxAssetsLeasingArrangements

kmx:DeferredTaxAssetsLeasingArrangements


Deferred
Period End2021-02-282020-02-292019-02-28
Value1151190.0
Percentage of DeferredTaxAssetsLeasingArrangements100.0100.00.0

kmx:FinanceLeaseAccumulatedDepreciation

kmx:FinanceLeaseAccumulatedDepreciation


Finance
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value20171412109.1
Percentage of FinanceLeaseAccumulatedDepreciation100.0100.0100.0100.0100.0100.0

kmx:FinancingObligationPaymentsDueNextFiscalYear

kmx:FinancingObligationPaymentsDueNextFiscalYear


Financing
Period End2021-02-28
Value53
Percentage of FinancingObligationPaymentsDueNextFiscalYear100.0

kmx:FinancingObligationPaymentsDueYearTwo

kmx:FinancingObligationPaymentsDueYearTwo


Financing
Period End2021-02-28
Value53
Percentage of FinancingObligationPaymentsDueYearTwo100.0

kmx:FinancingObligations

kmx:FinancingObligations


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-02-28
Value531533531533535536495
Percentage of FinancingObligations100.0100.0100.0100.0100.0100.0100.0

kmx:FinancingObligationsPaymentsDue

kmx:FinancingObligationsPaymentsDue


Financing
Period End2021-02-28
Value1121
Percentage of FinancingObligationsPaymentsDue100.0

kmx:FinancingObligationsPaymentsDueAfterYearFive

kmx:FinancingObligationsPaymentsDueAfterYearFive


Financing
Period End2021-02-28
Value845
Percentage of FinancingObligationsPaymentsDueAfterYearFive100.0

kmx:FinancingObligationsPaymentsDueYearFive

kmx:FinancingObligationsPaymentsDueYearFive


Financing
Period End2021-02-28
Value57
Percentage of FinancingObligationsPaymentsDueYearFive100.0

kmx:FinancingObligationsPaymentsDueYearFour

kmx:FinancingObligationsPaymentsDueYearFour


Financing
Period End2021-02-28
Value54
Percentage of FinancingObligationsPaymentsDueYearFour100.0

kmx:FinancingObligationsPaymentsDueYearThree

kmx:FinancingObligationsPaymentsDueYearThree


Financing
Period End2021-02-28
Value56
Percentage of FinancingObligationsPaymentsDueYearThree100.0

kmx:FinancingObligationsUndiscountedExcessAmount

kmx:FinancingObligationsUndiscountedExcessAmount


Financing
Period End2021-02-28
Value-588020000.0
Percentage of FinancingObligationsUndiscountedExcessAmount100.0

kmx:ItemAsPercentOfTotalEndingManagedReceivables us-gaap:ValuationAllowancesAndReservesType

kmx:ItemAsPercentOfTotalEndingManagedReceivables

us-gaap:AllowanceForLoanAndLeaseLosses


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-28
Value2.622.973.173.230.03320.01160.01150.01150.01140.0110.01120.01130.01130.01110.01110.01150.01180.01160.0110.01080.01050.00990.00970.00960.00940.00970.00980.00990.010.00970.010.010.010.010.010.0090.0090.0090.0090.0080.0080.009
Percentage of ItemAsPercentOfTotalEndingManagedReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:ItemAsPercentageOfTotalAssets

kmx:ItemAsPercentageOfTotalAssets


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-28
Value4.73.32.64.10.0360.0140.0130.0150.0220.0210.020.020.0190.0180.0190.0220.0260.0260.0310.0510.0340.0310.030.0370.0550.0040.0170.0310.0460.0550.0610.070.0710.0470.0460.010.0550.0550.0530.0280.008
Percentage of ItemAsPercentageOfTotalAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:ItemAsPercentageOfTotalAssets us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value4.73.32.64.10.0360.0140.0130.0150.0220.0210.020.020.0190.0170.0190.0220.0260.0250.030.0510.0330.0310.030.0370.029
Percentage of ItemAsPercentageOfTotalAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.094.4100.0100.0100.096.296.8100.097.1100.0100.0100.0725.0

kmx:ItemAsPercentageOfTotalAssetsAtFairValue

kmx:ItemAsPercentageOfTotalAssetsAtFairValue


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-28
Value100.0100.0100.0100.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.01.0
Percentage of ItemAsPercentageOfTotalAssetsAtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:ItemAsPercentageOfTotalAssetsAtFairValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Item
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value99.999.499.8100.01.01.00.9861.00.9990.9950.990.9890.9860.9610.9790.9990.9990.9930.9820.9970.9950.9990.9961.00.997
Percentage of ItemAsPercentageOfTotalAssetsAtFairValue99.999.499.8100.0100.0100.098.6100.099.999.599.098.998.696.197.999.999.999.398.299.799.599.999.6100.099.7

us-gaap:FairValueInputsLevel2


Item
Period End2021-05-312021-02-282020-11-302020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value0.10.60.2000.01400.0010.0050.010.0110.0140.0390.0210.0010.0010.0070.0180.0030.0050.0010.00400.003
Percentage of ItemAsPercentageOfTotalAssetsAtFairValue0.10.60.20.00.01.40.00.10.51.01.11.43.92.10.10.10.71.80.30.50.10.40.00.3

kmx:ItemAsPercentageOfTotalLiabilities

kmx:ItemAsPercentageOfTotalLiabilities


Item
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-28
Value0.10.0020.0010-0.0010.0010000000000000.00100000000000000.0010.001000.0040.001
Percentage of ItemAsPercentageOfTotalLiabilities100.0100.0100.00.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.00.00.0100.0100.0

kmx:ItemAsPercentageOfTotalLiabilities us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Item
Period End2020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value0.10.0020.0010-0.0010.0010000000000000.00100-0.00010596
Percentage of ItemAsPercentageOfTotalLiabilities100.0100.0100.00.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.00.00.0

kmx:LesseeLeaseNotYetCommencedAmount

kmx:LesseeLeaseNotYetCommencedAmount


Lessee
Period End2021-02-282020-11-302020-08-31
Value36112112
Percentage of LesseeLeaseNotYetCommencedAmount100.0100.0100.0

kmx:NonRecourseDebtCurrent

kmx:NonRecourseDebtCurrent


Non
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-29
Value496442434457430424397423417385373397382355348357338333312337319300275296287258241260253223214218207182169171174
Percentage of NonRecourseDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:NonRecourseDebtNonCurrent

kmx:NonRecourseDebtNonCurrent


Non
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-29
Value13840132971316112900127221316512899126951245312127119971183111565112661111710925106431038710129990694949227906088568574821279387648737370246755651261605672521149094509
Percentage of NonRecourseDebtNonCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables

kmx:PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables


Past
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value2.12.832.932.620.02480.03440.0380.0360.0340.0360.0380.0340.0320.0340.0350.0340.0310.0310.0350.0320.0280.0270.0320.030.0260.0260.0310.0280.0250.0260.0290.0270.0240.026
Percentage of PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables us-gaap:FinancingReceivablesPeriodPastDue

kmx:GreaterThanNinetyDaysPastDue


Past
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value0.140.190.190.230.00290.00250.0030.0030.0020.0030.0030.0030.0030.0030.0030.0030.0030.0020.0030.0030.0020.0020.0030.002
Percentage of PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables6.76.76.58.811.77.37.98.35.98.37.98.89.48.88.68.89.76.58.69.47.17.49.47.7

kmx:SixtyOneToNinetyDaysPastDue


Past
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value0.590.860.890.790.00680.01010.0110.0110.010.0110.0110.010.0090.010.010.010.0080.0090.010.0090.0070.0070.0080.006
Percentage of PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables28.130.430.430.227.429.428.930.629.430.628.929.428.129.428.629.425.829.028.628.125.025.925.023.1

kmx:ThirtyOneToSixtyDaysPastDue


Past
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value1.371.781.851.60.01510.02180.0240.0220.0220.0220.0240.0210.020.0210.0220.0210.020.020.0220.020.0190.0180.0210.018
Percentage of PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables65.262.963.161.160.963.463.261.164.761.163.261.862.561.862.961.864.564.562.962.567.966.765.669.2

us-gaap:FinancingReceivables1To29DaysPastDue


Past
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value97.997.1797.0797.380.9752
Percentage of PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables4661.93433.63313.03716.83932.3

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVesting us-gaap:Range

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVesting

srt:Maximum


Share
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-28
Value198208210190192172
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVesting100.0100.0100.0100.0100.0100.0

srt:Minimum


Share
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-28
Value747878717264
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVesting37.537.537.537.537.537.5

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInNextFiscalYear us-gaap:Range

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInNextFiscalYear

srt:Maximum


Share
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-28
Value1208688567150
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInNextFiscalYear100.0100.0100.0100.0100.0100.0

srt:Minimum


Share
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-28
Value453233212619
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInNextFiscalYear37.537.537.537.537.537.5

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInThreeYears us-gaap:Range

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInThreeYears

srt:Maximum


Share
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-28
Value272525716363
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInThreeYears100.0100.0100.0100.0100.0100.0

srt:Minimum


Share
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-28
Value109.6879.638262323
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInThreeYears37.537.537.537.537.537.5

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInTwoYears us-gaap:Range

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInTwoYears

srt:Maximum


Share
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-28
Value509696625757
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInTwoYears100.0100.0100.0100.0100.0100.0

srt:Minimum


Share
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-28
Value183636232121
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInTwoYears37.537.537.537.537.537.5

kmx:TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade us-gaap:InternalCreditAssessment

kmx:TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade

kmx:CreditGradeA


Total
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value48.849.649.950.40.5060.508
Percentage of TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade100.0100.0100.0100.0100.0100.0

kmx:CreditGradeB


Total
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value36.436.236.236.00.3570.3560.3610.3620.3610.3590.3580.3580.3580.3560.3550.3540.3530.350.350.3520.3530.3540.3560.3590.3610.3610.3630.3660.3680.370.3720.3750.3770.382
Percentage of TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade74.673.072.571.470.670.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:CreditGradeCAndOther


Total
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value14.814.213.913.60.1370.1360.1380.140.1420.1430.1460.1480.150.1510.1530.1560.1590.1610.1630.1620.1610.160.1580.1560.1540.150.1460.1440.1440.1420.140.140.1410.139
Percentage of TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade30.328.627.927.027.126.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:Totalleaseassets

kmx:Totalleaseassets


Totalleaseassets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value570541536528519524
Percentage of Totalleaseassets100.0100.0100.0100.0100.0100.0

kmx:Totalleaseliabilities

kmx:Totalleaseliabilities


Totalleaseliabilities
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value615584573564554556
Percentage of Totalleaseliabilities100.0100.0100.0100.0100.0100.0

kmx:WarehouseFacilitiesMaximumBorrowingCapacity us-gaap:DebtInstrument

kmx:WarehouseFacilitiesMaximumBorrowingCapacity

kmx:WarehouseFacilities


Warehouse
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-05-312012-02-292011-11-302011-09-302011-08-31
Value39303930353035003500350035003500350035003250314031403140294029002800280028002800250025002500250023002300210018001800180017001700170016001600160016002000
Percentage of WarehouseFacilitiesMaximumBorrowingCapacity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:WarehouseFacilityOne


Warehouse
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-02-28
Value1400140019501400140014001950150140014001300
Percentage of WarehouseFacilitiesMaximumBorrowingCapacity35.635.655.240.040.040.055.74.340.040.041.4

kmx:WarehouseFacilityThree


Warehouse
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-02-28
Value180180140015015015014001950150150140
Percentage of WarehouseFacilitiesMaximumBorrowingCapacity4.64.639.74.34.34.340.055.74.34.34.5

kmx:WarehouseFacilityTwo


Warehouse
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-02-28
Value235023501801950195019501501400195019501700
Percentage of WarehouseFacilitiesMaximumBorrowingCapacity59.859.85.155.755.755.74.340.055.755.754.1

us-gaap:AccruedEmployeeBenefitsCurrent

us-gaap:AccruedEmployeeBenefitsCurrent


Accrued
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-29
Value22314215514814012814812010387
Percentage of AccruedEmployeeBenefitsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-02-28
Value1069714547876719295260294437393368368334308328365429417487798496454426518747532113795576476887667424654318447546140453
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Assets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value1068709546876719295256294437391364364330296321365428414478795494453424518389
Percentage of AssetsFairValueDisclosure99.999.499.8100.0100.0100.098.6100.099.999.599.098.998.696.197.999.999.999.398.299.799.599.999.6100.0725.1

us-gaap:FairValueInputsLevel2


Assets
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value1.0424.5621.2540.0750.00.03.7110.0010.5931.8443.6243.9884.629126.9040.2330.5772.9978.7782.5082.5140.5871.6250.0911.201
Percentage of AssetsFairValueDisclosure0.10.60.20.00.00.01.40.00.10.51.01.11.43.92.10.10.10.71.80.30.50.10.40.02.2

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashAndCashEquivalentsFairValueDisclosure


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-28
Value1000685524852697273234272415372345343310276302346410397460778477439410505733432023705496416827597364614278047145840020050
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Cash
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value1000685524852697273234272415372345343310276302346410397460778477439410505380
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0878.8

us-gaap:CashCashEquivalentsAndShortTermInvestments

us-gaap:CashCashEquivalentsAndShortTermInvestments


Cash
Period End2021-02-28
Value46
Percentage of CashCashEquivalentsAndShortTermInvestments100.0

us-gaap:DebtInstrumentFairValue

us-gaap:DebtInstrumentFairValue


Debt
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-29
Value5565565605535235465275325134884784864864925075195094990.0
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount us-gaap:DebtInstrument

us-gaap:DebtInstrumentUnusedBorrowingCapacityAmount

kmx:WarehouseFacilities


Debt
Period End2021-05-312021-02-282020-11-302020-08-31
Value1070161012201250
Percentage of DebtInstrumentUnusedBorrowingCapacityAmount100.0100.0100.0100.0

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DebtLongtermAndShorttermCombinedAmount


Debt
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-02-28
Value15693150981495215291148801540214197
Percentage of DebtLongtermAndShorttermCombinedAmount100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtWeightedAverageInterestRate us-gaap:DebtInstrument

us-gaap:DebtWeightedAverageInterestRate

us-gaap:LineOfCredit


Debt
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-28
Value1.740.03230.0350.02490.01740.01460.0160.0150.018
Percentage of DebtWeightedAverageInterestRate100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-02-28
Value1381641591331198961
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value901000.0917000.0677000.0682000.01249000.01807000.01597000.01296000.01110000.02152000.01445000.0
Percentage of DeferredTaxAssetsCapitalLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDerivativeInstruments

us-gaap:DeferredTaxAssetsDerivativeInstruments


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-29
Value9.317100.00.00.4088.324.014.8963.9040.0
Percentage of DeferredTaxAssetsDerivativeInstruments100.0100.00.00.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value383310163147237224217186167189169
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsInvestmentInSubsidiaries

us-gaap:DeferredTaxAssetsInvestmentInSubsidiaries


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value135897163106979571705547
Percentage of DeferredTaxAssetsInvestmentInSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value5451484569566360535345
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value6739423759605248353333
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-29
Value11181718118.8047.0457.3756.2213.24
Percentage of DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesLeasingArrangements


Deferred
Period End2021-02-282020-02-292019-02-28
Value1101140.0
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.0100.00.0

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-28
Value21191616211917139.429
Percentage of DeferredTaxLiabilitiesPrepaidExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-28
Value756759435232143.7370.0
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value-98.219-142.104-76.739-85.075-89.604-90.631-93.992-63.14978-67.627-36.125
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet us-gaap:RetirementPlanType

kmx:RestorationPlan


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value-12.062-12.498-11.082-11.041-10.822
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet12.38.814.413.012.1

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value-86.157-129.606-65.657-74.034-78.782
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet87.791.285.687.087.9

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

kmx:RestorationPlan


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value2.950.02850.0420.0410.0425
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value2.950.02850.0420.0410.0425
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanBenefitObligation


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-28
Value307310242241229212229187186164127116
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

kmx:RestorationPlan


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value1212111110
Percentage of DefinedBenefitPlanBenefitObligation3.94.04.64.64.7

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value295298231230218
Percentage of DefinedBenefitPlanBenefitObligation96.196.095.495.495.3

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-02-28
Value-3400000.0
Percentage of DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear100.0

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-02-282020-02-292019-02-282018-02-28
Value4.60.0106.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear100.00.0100.0100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-28
Value209168166156139121135124107969177
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

kmx:MutualFunds, us-gaap:FairValueInputsLevel1, kmx:EquitySecuritiesInternational


Defined
Period End2021-02-282020-02-292019-02-282018-02-28
Value25202019
Percentage of DefinedBenefitPlanFairValueOfPlanAssets12.312.112.312.4

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FinancialInstrument

kmx:CollectiveFunds, us-gaap:EquitySecurities


Defined
Period End2021-02-282020-02-292019-02-28
Value1311040.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets62.562.10.0

kmx:CollectiveFunds, us-gaap:FixedIncomeSecurities


Defined
Period End2021-02-282020-02-292019-02-28
Value51430.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets24.525.60.0

kmx:CollectiveFunds, us-gaap:ShortTermInvestments


Defined
Period End2021-02-282020-02-292019-02-28
Value1.6330.421.219
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.80.20.7

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value209168166156139
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DefinedBenefitPlanFundedStatusOfPlan


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value-98.219-142.104-76.739-85.075-89.604-90.631-93.992-63.14978-67.627-36.125
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanType

kmx:RestorationPlan


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value-12.062-12.498-11.082-11.041-10.822
Percentage of DefinedBenefitPlanFundedStatusOfPlan12.38.814.413.012.1

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value-86.157-129.606-65.657-74.034-78.782
Percentage of DefinedBenefitPlanFundedStatusOfPlan87.791.285.687.087.9

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

us-gaap:EquitySecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-02-282020-02-292019-02-282018-02-28
Value75.00.750.750.75
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0100.0100.0

us-gaap:FixedIncomeSecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-02-282020-02-292019-02-282018-02-28
Value25.00.250.250.25
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage33.333.333.333.3

us-gaap:DerivativeAssets us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

us-gaap:DerivativeAssets

us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-05-312021-02-282020-11-302020-08-31
Value0.7324.0611.1890.075
Percentage of DerivativeAssets100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated


Derivative
Period End2021-05-312021-02-282020-11-30
Value0.310.5010.065
Percentage of DerivativeAssets42.312.35.5

us-gaap:DerivativeAssets us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-05-312021-02-282020-11-302020-08-31
Value0.7324.0611.1890.075
Percentage of DerivativeAssets100.0100.0100.0100.0

us-gaap:Nondesignated


Derivative
Period End2021-05-312021-02-282020-11-30
Value0.310.5010.065
Percentage of DerivativeAssets42.312.35.5

us-gaap:DerivativeLiabilities us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

us-gaap:DerivativeLiabilities

us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value7.3226.0247.1649.7412523
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated


Derivative
Period End2021-05-312020-05-31
Value0.1511.892
Percentage of DerivativeLiabilities2.17.4

us-gaap:DerivativeLiabilities us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value7.3226.0247.1649.7412523
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0

us-gaap:Nondesignated


Derivative
Period End2021-05-312020-05-31
Value0.1511.892
Percentage of DerivativeLiabilities2.17.4

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

us-gaap:DerivativeNotionalAmount

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


Derivative
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-02-28
Value286024302410252019602620259025302230
Percentage of DerivativeNotionalAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashFlowHedging, us-gaap:InterestRateSwap, us-gaap:Nondesignated


Derivative
Period End2021-05-312021-02-282020-11-302020-05-31
Value358255170400
Percentage of DerivativeNotionalAmount12.510.57.120.4

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

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-02-282020-02-292019-02-28
Value243026202230
Percentage of DerivativeNotionalAmount100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-282018-05-312018-02-282017-05-312017-02-282016-11-302016-08-312016-02-292012-08-312012-05-312012-02-292011-11-30
Value9859875883527949764837454941462827
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

kmx:Othersharebasedincentives


Employee
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-28
Value4.70.71.01.11.25.43.15.32.61.82.33.02.13.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized4.81.20.00.01.49.20.00.03.13.40.00.02.76.1

kmx:StockSettledRestrictedStockUnits


Employee
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value2314172023122113161821101315171111141619131619221316192114171922
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized24.125.00.00.027.321.725.825.20.00.026.621.00.00.023.024.023.90.00.00.00.00.00.00.00.00.00.00.00.00.047.048.1

us-gaap:PerformanceShares


Employee
Period End2021-05-312021-02-282020-05-312020-02-292019-05-312019-02-282018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-292015-11-302015-08-312015-05-31
Value4.50.50.95.02.41.12.02.42.93.95.32.22.93.23.63.9
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized4.60.81.08.52.92.12.54.90.00.06.94.65.90.00.00.0

us-gaap:RestrictedStock


Employee
Period End2021-05-312021-02-282020-05-312020-02-292018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.20.20.30.40.10.61.02.10.31.01.21.40.10.20.30.00.10.10.2
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized0.20.30.30.70.11.20.00.00.42.13.23.10.20.00.00.00.00.00.0

us-gaap:StockOption


Employee
Period End2021-05-312021-02-282020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-05-312017-02-282016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-30
Value70446240475359374349553553333439455031384350323743483237
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized71.173.871.369.10.00.071.171.30.00.070.872.969.769.470.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions


Employee
Period End2020-11-302020-08-31
Value4955
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions100.0100.0

us-gaap:EquityMethodInvestmentsFairValueDisclosure

us-gaap:EquityMethodInvestmentsFairValueDisclosure


Equity
Period End2021-05-31
Value40
Percentage of EquityMethodInvestmentsFairValueDisclosure100.0

us-gaap:EquityMethodInvestmentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Equity
Period End2021-05-31
Value40
Percentage of EquityMethodInvestmentsFairValueDisclosure100.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2021-05-312021-02-282020-11-302020-08-31
Value13812911198
Percentage of FinanceLeaseLiability100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value9806000.09422000.09520000.05997000.05442000.05066000.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value128120102928279
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2021-05-312021-02-282020-11-302020-08-31
Value316310215190
Percentage of FinanceLeaseLiabilityPaymentsDue100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive


Finance
Period End2021-05-312021-02-282020-11-302020-08-31
Value196190130115
Percentage of FinanceLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2021-02-28
Value21
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive


Finance
Period End2021-05-312021-02-282020-11-302020-08-31
Value25231715
Percentage of FinanceLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2021-05-312021-02-282020-11-302020-08-31
Value24232119
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2021-05-312021-02-282020-11-302020-08-31
Value27261816
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2021-05-312021-02-282020-11-302020-08-31
Value25232016
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear


Finance
Period End2021-05-312020-11-302020-08-31
Value175.0717.627
Percentage of FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2021-05-312021-02-282020-11-302020-08-31
Value17818010392
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value11610997847575
Percentage of FinanceLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization


Finance
Period End2021-02-282020-02-29
Value12784
Percentage of FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value14.7315.0911.3410.660.10840.1032
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses

us-gaap:FinancingReceivableAllowanceForCreditLosses


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value379411431432437157153150147138138138134128127129129123114109104949087838180777569676560575449464341363438420.0
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FinancingReceivableAllowanceForCreditLosses us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

kmx:TierIII


Financing
Period End2021-05-312021-02-282020-02-29
Value313117
Percentage of FinancingReceivableAllowanceForCreditLosses8.37.711.0

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value420113180269392
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear us-gaap:InternalCreditAssessment

kmx:CreditGradeA


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value150305388139
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear35.926.729.832.935.6

kmx:CreditGradeB


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value1724977112160
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear41.043.242.741.841.0

kmx:CreditGradeCAndOther


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value9634496892
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear23.030.127.525.323.4

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value997494640801991
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear us-gaap:InternalCreditAssessment

kmx:CreditGradeA


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value453199271353450
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear45.540.342.544.145.4

kmx:CreditGradeB


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value392195246302367
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear39.439.538.437.737.0

kmx:CreditGradeCAndOther


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value15199122146174
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear15.220.219.118.217.6

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value2406556141542600957
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear us-gaap:InternalCreditAssessment

kmx:CreditGradeA


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value1107278220811340493
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear46.050.050.151.551.6

kmx:CreditGradeB


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value89119931507938334
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear37.135.836.336.134.9

kmx:CreditGradeCAndOther


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value407786564322129
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear16.914.113.612.413.5

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value50024112455850295527
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear us-gaap:InternalCreditAssessment

kmx:CreditGradeA


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value24812146239326492928
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear49.652.252.552.753.0

kmx:CreditGradeB


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value18021424157117291891
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear36.034.634.534.434.2

kmx:CreditGradeCAndOther


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value719541594650706
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear14.413.213.012.912.8

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value20061226145016921960
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear us-gaap:InternalCreditAssessment

kmx:CreditGradeA


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value974568686814957
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear48.646.447.348.148.8

kmx:CreditGradeB


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value752476554638731
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear37.538.838.237.737.3

kmx:CreditGradeCAndOther


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value279182209239271
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear13.914.814.514.213.9

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value36332337265229843342
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear us-gaap:InternalCreditAssessment

kmx:CreditGradeA


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value18901146131614931689
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear52.049.149.650.050.5

kmx:CreditGradeB


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value126187097710931214
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear34.737.236.936.636.3

kmx:CreditGradeCAndOther


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value480320357398438
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear13.213.713.513.313.1

us-gaap:FinancingReceivableRecordedInvestmentPastDue

us-gaap:FinancingReceivableRecordedInvestmentPastDue


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-282010-02-28
Value303392399350326468510466431451466419376393405385338331359330281262303274234221251220190185201178154154164145116142133121133
Percentage of FinancingReceivableRecordedInvestmentPastDue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:FinancingReceivablesPeriodPastDue

kmx:GreaterThanNinetyDaysPastDue


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value202626303834353331333431272930302726292721222416
Percentage of FinancingReceivableRecordedInvestmentPastDue6.66.76.58.611.67.37.07.27.27.57.37.67.27.67.57.98.08.08.18.27.58.67.97.6

kmx:SixtyOneToNinetyDaysPastDue


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value841191211069013815214012414113412411011611611591931019571697852
Percentage of FinancingReceivableRecordedInvestmentPastDue27.930.530.530.427.629.529.830.228.731.328.829.729.329.728.729.927.128.228.328.925.526.325.923.7

kmx:ThirtyOneToSixtyDaysPastDue


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value198246252213198296323292276276298262239246258239219211228207188171201152
Percentage of FinancingReceivableRecordedInvestmentPastDue65.562.763.061.160.863.263.262.664.161.263.862.763.562.763.862.264.963.763.662.967.065.166.268.7

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment

kmx:GreaterThanNinetyDaysPastDue, kmx:CreditGradeA


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value1.72.62.42.83.7
Percentage of FinancingReceivableRecordedInvestmentPastDue0.60.70.60.81.1

kmx:GreaterThanNinetyDaysPastDue, kmx:CreditGradeB


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value8.911111317
Percentage of FinancingReceivableRecordedInvestmentPastDue2.92.92.83.75.3

kmx:GreaterThanNinetyDaysPastDue, kmx:CreditGradeCAndOther


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value9.412121417
Percentage of FinancingReceivableRecordedInvestmentPastDue3.13.23.14.15.2

kmx:SixtyOneToNinetyDaysPastDue, kmx:CreditGradeA


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value5.77.07.27.27.0
Percentage of FinancingReceivableRecordedInvestmentPastDue1.91.81.82.12.1

kmx:SixtyOneToNinetyDaysPastDue, kmx:CreditGradeB


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value3448494338
Percentage of FinancingReceivableRecordedInvestmentPastDue11.412.312.312.411.9

kmx:SixtyOneToNinetyDaysPastDue, kmx:CreditGradeCAndOther


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value4464655544
Percentage of FinancingReceivableRecordedInvestmentPastDue14.616.416.415.913.6

kmx:ThirtyOneToSixtyDaysPastDue, kmx:CreditGradeA


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value1217171516
Percentage of FinancingReceivableRecordedInvestmentPastDue4.04.44.44.55.0

kmx:ThirtyOneToSixtyDaysPastDue, kmx:CreditGradeB


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value861081129489
Percentage of FinancingReceivableRecordedInvestmentPastDue28.427.728.226.927.3

kmx:ThirtyOneToSixtyDaysPastDue, kmx:CreditGradeCAndOther


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value10012012110392
Percentage of FinancingReceivableRecordedInvestmentPastDue33.030.630.429.728.4

us-gaap:FinancingReceivableRecordedInvestmentPastDue us-gaap:InternalCreditAssessment

kmx:CreditGradeA


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value1926272527
Percentage of FinancingReceivableRecordedInvestmentPastDue6.56.96.87.38.3

kmx:CreditGradeB


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value129168173150145
Percentage of FinancingReceivableRecordedInvestmentPastDue42.843.043.343.044.5

kmx:CreditGradeCAndOther


Financing
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value154197199173154
Percentage of FinancingReceivableRecordedInvestmentPastDue50.850.249.949.647.2

us-gaap:InterestReceivable

us-gaap:InterestReceivable


Interest
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value67576161645659595649525150434746453841414035373635313231312629282724252523242420
Percentage of InterestReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentsAndOtherNoncurrentAssets

us-gaap:InvestmentsAndOtherNoncurrentAssets


Investments
Period End2021-02-282020-02-292019-02-282018-02-282017-02-28
Value152156838070
Percentage of InvestmentsAndOtherNoncurrentAssets100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-02-28
Value53
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-05-312020-11-302020-08-31
Value401327
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:LiabilitiesFairValueDisclosure


Liabilities
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-02-28
Value7.4736.0247.1649.74127231.65315136.121.9171.2751.430.0990.04.3883.7390.5090.3181.421.4428.0241.6323.4822.633-1.0643.2981.2112.131.3512.8890.00.1570.5171.5124.6084.7522.01.23.8
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Liabilities
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value7.4736.0247.1649.74127231.65315136.121.9171.2751.430.0990.04.3883.7390.5090.3181.421.4428.0241.6323.4821.064
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LineOfCredit


Line
Period End2021-05-312020-11-302020-08-312019-05-312015-08-31
Value14501450145012001200
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:LineOfCredit


Line
Period End2021-05-312020-11-302020-08-31
Value14501450874
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0100.0100.0

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity us-gaap:DebtInstrument

us-gaap:LineOfCredit


Line
Period End2021-02-282020-02-29
Value1450997
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity0.00.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent


Long
Period End2021-02-282020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-02-29
Value452433406435432398384411393365358366349343324351333315290320309290265282274242233237224199189
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtPercentageBearingVariableInterestRate us-gaap:DebtInstrument

us-gaap:LongTermDebtPercentageBearingVariableInterestRate

kmx:TermLoan


Long
Period End2021-02-28
Value1.02
Percentage of LongTermDebtPercentageBearingVariableInterestRate100.0

us-gaap:NonRecourseDebt

us-gaap:NonRecourseDebt


Non
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-29
Value143601376013620133801317013610133201314012893125351239212252119691164411490113001100010740104601026098349527934091508860847081807910763072506970673063705860538050804680
Percentage of NonRecourseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonRecourseDebt us-gaap:DebtInstrument

kmx:TermSecuritizationsDebt


Non
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value1150011450113101113011220114301101010880107101066010400101509940981096109240898091208790857083608130794079107770748072206860666063706160578054305060
Percentage of NonRecourseDebt80.183.283.083.285.284.082.782.883.185.083.982.883.084.283.681.881.684.984.083.585.085.385.086.487.788.388.386.787.387.988.485.985.286.3

kmx:WarehouseFacilities


Non
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-31
Value286023102310225019502180231022602180188019902110203018301880206020201620168017001470140013901240109098695910409648798079479417928761070
Percentage of NonRecourseDebt19.916.817.016.814.816.017.317.216.915.016.117.217.015.716.418.218.415.116.116.614.914.714.913.612.311.611.713.112.612.111.614.114.813.516.321.1

us-gaap:NotesAndLoansReceivableGrossCurrent

us-gaap:NotesAndLoansReceivableGrossCurrent


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value1416213454132361302812845
Percentage of NotesAndLoansReceivableGrossCurrent100.0100.0100.0100.0100.0

us-gaap:NotesAndLoansReceivableGrossCurrent us-gaap:InternalCreditAssessment

kmx:CreditGradeA


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value70386847677667136632
Percentage of NotesAndLoansReceivableGrossCurrent49.750.951.251.551.6

kmx:CreditGradeB


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value51434840476146634554
Percentage of NotesAndLoansReceivableGrossCurrent36.336.036.035.835.5

kmx:CreditGradeCAndOther


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-31
Value19801767169816511658
Percentage of NotesAndLoansReceivableGrossCurrent14.013.112.812.712.9

us-gaap:NotesReceivableGross

us-gaap:NotesReceivableGross


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value144651384713636133791317113617133521313112859125101237712214119251161811455112521098310681104071019799149593937191648862845881867891757371846919668363345933558353424981482347074334
Percentage of NotesReceivableGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NotesReceivableGross us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

kmx:ExcessCollateral


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-29
Value391345337312291289296295291273277284277269263241233211162
Percentage of NotesReceivableGross2.72.52.52.32.22.12.22.22.32.22.22.32.32.32.32.12.12.01.7

kmx:OtherReceivables


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value20917911214213514013311891868075606053648561257270399366311307287246247242200159163170174151232246217250283198
Percentage of NotesReceivableGross1.51.30.81.11.01.01.00.90.70.70.60.60.50.50.50.60.80.62.52.74.03.83.33.43.22.93.03.12.72.22.42.62.82.64.24.64.45.26.04.6

kmx:TermSecuritizations


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value110071100810878106701079511007106161045210298102731002697489559945592568885864287848473822980427828766976137485722669796603640961455948556552194989447540294211369728653193
Percentage of NotesReceivableGross76.179.579.879.882.080.879.579.680.182.181.079.880.281.480.879.078.782.281.480.781.181.681.883.184.585.485.383.784.685.586.083.382.484.180.275.484.576.660.973.7

kmx:WarehouseFacilitiesReceivables


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value2856231423082253194921812305226521781877199321062028183418822061202216241677169714721399139112431089986959104596487980794794179287610665538761559943
Percentage of NotesReceivableGross19.716.716.916.814.816.017.317.216.915.016.117.217.015.816.418.318.415.216.116.614.814.614.813.612.311.711.713.212.712.211.714.214.913.315.720.011.118.233.121.8

us-gaap:NotesReceivableGross us-gaap:InternalCreditAssessment

kmx:CreditGradeA


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value705868746803673966596915
Percentage of NotesReceivableGross48.849.649.950.450.650.8

kmx:CreditGradeB


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value5273500849344814469948414813475346414488443243764267413340693986387837393643358535023400334032913201305529692884278626582574250423872265
Percentage of NotesReceivableGross36.536.236.236.035.735.636.136.236.135.935.835.835.835.635.535.435.335.035.035.235.335.435.635.936.136.136.336.636.837.037.237.537.738.2

kmx:CreditGradeCAndOther


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value213419641897182518121860184718441833179618021806178617601756175317421718169516541598152614771425135912671196113810881019970939892826
Percentage of NotesReceivableGross14.814.213.913.613.813.713.814.014.314.414.614.815.015.115.315.615.916.116.316.216.115.915.815.615.315.014.614.414.414.214.014.114.113.9

us-gaap:NotesReceivableNet

us-gaap:NotesReceivableNet


Notes
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-28
Value14159134891326713013127941355113276130651277712428122991214011842115351137611172108921059610333101319853953693189116881284358138784475477147689266656310589555525315515449814807469944904334
Percentage of NotesReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-29
Value5.285.365.375.370.0540.054
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0

us-gaap:OtherLongTermDebtNoncurrent

us-gaap:OtherLongTermDebtNoncurrent


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-02-28
Value132013221319189616931778170416891573116399284079899510428157979528887975977158643003003003000.0
Percentage of OtherLongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherReceivables

us-gaap:OtherReceivables


Other
Period End2021-05-312021-02-282020-11-302020-08-312020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value4.7-3.71.04.9-4.93517258.26.98.2121.52.21.12.1-6.0-0.1-1.41.42.83.20.33.4-1.127-0.5-0.7187.012208.8-5.0-2.9-3.1-1.81.12.94.0
Percentage of OtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLi