KMX


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService

us-gaap:Revenues
us-gaap:ConcentrationRiskByBenchmark

us-gaap:CostOfRevenue
us-gaap:ConcentrationRiskByBenchmark

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:InterestExpense

us-gaap:GrossProfit

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:InterestExpense

us-gaap:NonoperatingIncomeExpense

us-gaap:IncomeTaxExpenseBenefit

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

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:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:DebtCurrent

us-gaap:LongTermDebtCurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:LongTermDebt
us-gaap:LongtermDebtType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanType

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities

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

us-gaap:ShareBasedCompensation

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

kmx:FinanceLeaseCost

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

kmx:NetIncomeLossFromFinancing
us-gaap:AdjustmentsForNewAccountingPronouncements
kmx:NewAccountingPronouncementorChangeinAccountingPrincipleCummulativeEffect
us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents
us-gaap:AwardType, us-gaap:PlanName
kmx:PSUconversionthreshold

kmx:PaymentsOnNonRecourseDebt

kmx:PaymentsOnRevolvingLineOfCreditAndLongTermDebt

kmx:ProceedsFromIssuanceOfNonRecourseDebt

kmx:ProceedsFromRevolvingLineOfCreditAndLongTermDebt

kmx:ProvisionForContractCancellationReserves

kmx:RepaymentsOfLongTermFinanceAndCapitalLeaseObligations
us-gaap:AwardType
kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionValue
us-gaap:AwardType
kmx:SharebasedCompensationArrangementbySharebasedPaymentAwardPaymentsUponVesting

kmx:Totalaveragemanagedreceivables

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

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

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

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:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInFinanceReceivables

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets

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

us-gaap:InterestAndFeeIncomeLoansAndLeases

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestPaidCapitalized

us-gaap:LaborAndRelatedExpense

us-gaap:LeaseCost
us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityIncreaseDecreaseForPeriodNet
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification
us-gaap:Range, kmx:EstimatedImpactofNewAccountingPronouncementsAxis

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

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: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:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation
us-gaap:AwardType
us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised
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

kmx:AccumulatedOtherComprehensiveIncomeLossDeferredTaxes

kmx:CancellationReservesCurrentPortion

kmx:DeferredTaxAssetsLeasingArrangements

kmx:FinanceLeaseAccumulatedDepreciation

kmx:FinancingObligations
us-gaap:ValuationAllowancesAndReservesType
kmx:ItemAsPercentOfTotalEndingManagedReceivables

kmx:ItemAsPercentageOfTotalAssets
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel
kmx:ItemAsPercentageOfTotalAssetsAtFairValue

kmx:ItemAsPercentageOfTotalLiabilities
us-gaap:FairValueByFairValueHierarchyLevel

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:AccruedLiabilitiesCurrent

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption

us-gaap:DebtInstrumentFairValue

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:DeferredTaxLiabilitiesDerivatives

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesTaxDeferredIncome

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

us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories
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:DerivativeAssets
us-gaap:FairValueByFairValueHierarchyLevel

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

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinancingReceivableAllowanceForCreditLosses

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

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

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:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OtherLongTermDebtNoncurrent

us-gaap:OtherReceivables

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
us-gaap:RetirementPlanType

us-gaap:ReceivablesLongTermContractsOrPrograms

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:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

us-gaap:ShortTermBankLoansAndNotesPayable

us-gaap:StandardProductWarrantyAccrual
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

Tables

  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:CommonStockValue ▁▁▁▁▁▁▂▂▂▃▃▃▃▄▄▄▄▄▅▅▆▆▆▇▇▇▇▇███████████81818182828385878889909091939395969798102104104105108109110111111112112114114114113113113113112112NANANA
us-gaap:CommonStockSharesIssued ▁▁▁▁▁▂▂▂▂▃▃▃▃▄▄▄▄▄▅▅▆▆▆▇▇▇▇▇███████████162163163164165167171175176179181181183186187191192194197204208208210216218221223223224225228228228227226226226225225NANANA
us-gaap:CommonStockSharesOutstanding ▁▁▁▁▁▂▂▂▂▃▃▃▃▄▄▄▄▄▅▅▆▆▆▇▇▇▇▇███████████162163163164165167171175176179181181183186187191192194197204208208210216218221223223224225228228228227226226226225225NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▁▁▁▂▂▃▅▆▇█162163163164165167171175176179NANANA186NANANA194NANANA208NANANA221NANANA225NANANA227NANANA225NANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 163NA166167167NA175178179NA184184186NA190193195NA203209211NA217221223NA227227228NA232231231NA2302300NA2282260223
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 162NA164165166NA173176178NA181182185NA189191193NA201207208NA214218220NA223223224NA228228227NA2262260NA2232220220
us-gaap:EarningsPerShareBasic ▁▇▆▇█▆▆▆▇▄▅▅▆▅▄▅▅▄▄▅▅▄▄▄▄▃▃▄▄▃▃▃▃▃▃▃▃▃▃▃▃▂0.031.321.051.411.61.141.091.251.340.680.820.991.140.820.720.850.910.720.640.830.870.680.610.710.770.450.480.630.650.470.410.490.530.420.370.490.560.390.370.480.450.34
us-gaap:EarningsPerShareDiluted ▁▇▆▇█▆▆▆▇▄▄▅▆▄▄▅▅▄▄▅▅▄▄▄▄▃▃▄▄▃▃▃▃▃▂▃▃▃▂▃▃▂0.031.31.041.41.591.131.091.241.330.670.810.981.130.810.720.840.90.710.630.820.860.670.60.70.760.440.470.620.640.460.410.480.520.410.360.490.550.390.360.480.440.33
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▁▇▆▇█▅▄▆▆▄▄▅▅3228496247905201536643184295476647924084410743864542NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService kmx:UsedVehicles▁▇▆▇█▄▄▆▆▄▄▅▅2786425340284346454036283547397540213429342536943843NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService kmx:WholesaleVehicles▁▅▇██▅▆▇▇▅▅▅▅342548611678662543603628617527552547553NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▄▇▇██▆▆▇▇▆▆▆▆▅▅▅▆▅▄▅▅▄▄▅▅▄▃▄▄▃▃▃▃▂▂▃▃▂▂▂▂▁322849624790520153664318429547664792408441074386454240493701399741263705354438844014351434053599375030762941324533112827260227582774247522602587267922522119234122611725
 us-gaap:Revenues us-gaap:ConcentrationRiskByBenchmark kmx:UsedVehicles▁▇▆▇█▄▄▆▆▄▄▅▅2786425340284346454036283547397540213429342536943843NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Revenues us-gaap:ConcentrationRiskByBenchmark kmx:WholesaleVehicles▁▅▇██▅▆▇▇▅▅▅▅342548610678662543603627617527552547553NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfRevenue ▁▇▆██▄▄▆▆▄▄▅▅▃▂▃▄▂▂▃▃287442894176450746233719372641154131354735673782389334873198345135533216307933633471NA295831353248NA255928102862NA225723902392NA195722332296NA1821199219281483
 us-gaap:CostOfRevenue us-gaap:ConcentrationRiskByBenchmark kmx:UsedVehicles▁▇▆▇█▄▄▆▆▃▃▅▅2524379936153889404332383177354635813063306132893411NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:SellingGeneralAndAdministrativeExpense ▅████▇▆▇▇▆▆▆▆▆▅▅▅▄▄▄▅▄▄▃▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁373484484480489428409453438408399405403385356366380333337330349330316297313297284283290265257254253243232236248226219225226192
us-gaap:InterestExpense ██▇▇▅▇▆▅▆▆▅▅▅▅▄▄▃▃▂▁▁2322212117201817181917161616151311111077NA777NA777NA888NA000NA0100
us-gaap:GrossProfit ▃▇▆▇█▆▆▇▇▅▅▆▇▅▅▅▆▄▄▅▅▄▄▄▅▃▃▄▄▃▂▃▃▂▂▃▃▂▂▂▂▁354672613693742599569650661536539604648562503545572489464521543475446463501384381434448369345367381338303354383320297349333242
us-gaap:SellingGeneralAndAdministrativeExpense ▅████▇▆▇▇▆▆▆▆▆▅▅▅▄▄▄▅▄▄▃▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁373484484480489428409453438408399405403385356366380333337330349330316297313297284283290265257254253243232236248226219225226192
us-gaap:InterestExpense ██▇▇▅▇▆▅▆▆▅▅▅▅▄▄▃▃▂▁▁2322212117201817181917161616151311111077NA777NA777NA888NA000NA0100
us-gaap:NonoperatingIncomeExpense ▄▅█▅▅▆▄▅▅▅▅▅▅▅▅▅▅▁▅▅▅-3-16002-20000000-100-9-1-10NA-100NA0-10NA000NA000NA0NANANA
us-gaap:IncomeTaxExpenseBenefit ▁▄▄▅▆▄▄▅▆▆▅▇█▆▆▆▇▆▅▇▇0615471846357688187761081268983991078579107114NA8096105NA668690NA576974NA496977NA50676341
us-gaap:ComprehensiveIncomeNetOfTax ▁▅▆▇█▆▆▇█▅▅▆▇▅▅▆▆▅▅▆▆-10146182223253178190221237129157180210156143162178137127172180NA128155170NA103143148NA96119122NA76106122NA78102NANA
us-gaap:NetIncomeLoss ▁▇▆▇█▆▆▇▇▄▅▆▇▅▅▅▆▅▄▅▆▅▄▅▅▄▄▅▅▄▃▄▄▃▃▄▄▃▃▄▄▃421417323326619219022023812214818121115213616217514112817218114313015416999106140146107941111209582111126888210710174
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings4NA173233266NA190220238NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:Assets ▇███▇▇▇▇▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▂▂▂▂▁▁▁▁▁19972210822048720140197141871718396181761775617486173031687516475162791576015504147891448114381139521367013198128431239912148117071130310933104509888929788718598833176337358716068396695NANANA
us-gaap:Liabilities ▇███▇▇▇▇▆▆▆▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁1639417313167891652816261153601496114694143721416914002136741332313170127441244111817115761146910741103961004196619041881983908015774873756869627459215777565849964806472945484511NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇███▇▇▇▇▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▂▂▂▂▁▁▁▁▁19972210822048720140197141871718396181761775617486173031687516475162791576015504147891448114381139521367013198128431239912148117071130310933104509888929788718598833176337358716068396695NANANA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:AssetsCurrent ▇█▇▇▇▇▆▆▆▆▆▅▅▆▅▅▄▄▅▅▅▅▅▅▅▅▅▄▄▄▃▃▃▃▂▁▂▁▁328336633450338432833214305730222957306130042803273428732684275524162471263425032665259925732516263626432558248124542310208519611931185316481495154014101337NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▇▁▁▁▁▁▁▁▂▁▁▁▁▁▁▄▁▁▁▂▄▁▃▄▆▇▇██▅▅▅▅▅▅▃▂▁▂▁▁▁6585856404246353776442625603823316523733100351271893545326276647507254494454584564423831811564174551315
us-gaap:AccountsReceivableNetCurrent ▆█▅▅▅▅▄▄▃▅▃▃▄▆▃▃▃▅▃▃▄▅▃▄▃▂▂▃▂▃▁▂▂▃▁▂▃▄▂1451911421411331391111041011339599104152929410213288100103137881089779688570916270658654648511966NANANA
us-gaap:InventoryNet ▄█▇▇▇▇▆▆▆▆▆▆▅▆▅▄▄▅▅▄▄▅▅▄▄▃▃▂▃▃▂▂▂▁▁▁▁▁▁189928462682260425512519242423572260239024402231214822602170191818641932215319111844208619641708168116411556136413981517133911981210109210131061111610491002NANANA
us-gaap:OtherAssetsCurrent ▇▆██▆▅▄▅▆▇▄▃▃▃▃▃▃▂▃▃▂▃▄▃▂▂▂▂▁▂▂▂▁▂▁▂▁▃▂1008610911477675975889353413541414532263245294448382626202615212422101792193320NANANA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:PropertyPlantAndEquipmentGross NA4336NANANA4125NANANA3831NANANA3559NANANA3087NANANA2685NANANA2383NANANA2077NANANA1855NANANA1687NANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType kmx:FurnitureFixturesAndEquipmentNA750NANANA671NANANA600NANANA525NANANA443NANANA389NANANA343NANANA311NANANA273NANANA248NANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType kmx:LandHeldForDevelopmentNA73NANANA81NANANA77NANANA98NANANA85NANANA151NANANA170NANANA168NANANA119NANANA72NANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingNA2186NANANA2211NANANA2081NANANA1934NANANA1650NANANA1389NANANA1244NANANA1119NANANA1033NANANA1005NANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNA171NANANA125NANANA134NANANA179NANANA224NANANA209NANANA145NANANA89NANANA92NANANA44NANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandNA874NANANA789NANANA722NANANA627NANANA510NANANA397NANANA346NANANA275NANANA232NANANA221NANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNA278NANANA247NANANA215NANANA193NANANA174NANANA146NANANA129NANANA106NANANA95NANANA83NANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▆▅▂▁█▆▄12981266123911991173129712631230NA116411401110108010411010984954925901876849822799778754730707690NA648NANANA576NANANA511NANANANA
us-gaap:PropertyPlantAndEquipmentNet █████▇▇▇▇▇▇▆▆▆▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▂▁▁▁▁▁3064306930362981292628282800276627142667263426022557251824492326223421612105201618961862183317531696165215881535144414281411134713051278988976949920893NANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NA89NANANA61NANANA63NANANA150NANANA161NANANA175NANANA160NANANA151NANANA143NANANA128NANANANA
us-gaap:OtherAssetsNoncurrent ██▅▅▅▅▅▅▅▄▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▁▁▂▁▁▁▁▁▁▁▁▁2662582011852031851821901851581541471451401371381331491481491381331311281161101121041021071011039810610198999694NANANA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:LiabilitiesCurrent ▅█▇▇█▇▆▆▆▆▅▆▆▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▂▂▁▂▂▁▁▂▁▁1151153414211396148513111224128312881174111112011166110510271084108310059231001999997928906962875748729710684575525618646531490576508469NANANA
us-gaap:DebtCurrent █▁439433NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtCurrent ▂▂▁▃█▃998101410NANANANANANANANANANANANANANANANANANANANANANANANANANANANA00000NANANA
us-gaap:AccountsPayableCurrent ▃█▇▇▇▆▆▆▆▅▅▆▅▅▄▅▄▄▄▄▄▄▄▄▄▄▃▃▂▃▂▁▂▂▁▁▂▂▁390737641628656593558605586529519568510494476486454441420453446454459418433427367346316336272221293324246243288269218NANANA
us-gaap:AccruedIncomeTaxesCurrent ▁▁▁▁█▁▁01117831NA550014103120892015910094281580004831373800NANANA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:LongTermDebt ▁█1441614944NANANA13776NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent NA141NANANA76NANANA84NANANA89NANANA90NANANA93NANANA62NANANA78NANANA67NANANA35NANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType kmx:RestorationPlanNA11NANANA10NANANA10NANANA10NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNA129NANANA65NANANA74NANANA78NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ██▆▆▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▂▂▂▃▃▂▂▂▂▁▂▁▁▁▁▁391393317299289243242233223242239239231238232226222229229225220225182176168174190181171175145140136148119119123130127NANANA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▇██▇▇▆▇▇▆▆▆▅▅▅▅▅▄▄▄▆▆▅▅▆▆▆▆▅▅▅▅▄▄▃▃▃▂▁▁357837683698361134523357343534823383331633003200315231083015306229722904291132103274315631823357332933163288318430753019302329492820267326362552243022912183NANANA
 us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapital█▇▆▅▃▁▂▃▁▁1358134813211313126112371255126512341234NANANA1188NANANA1130NANANA1123NANANA1038NANANA972NANANA877NANANA820NANANANA
 us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▅█▆▅▃▂▃▃▂▁2303248823762307218921042147218221152047NANANA1883NANANA1746NANANA1994NANANA2214NANANA1993NANANA1744NANANA1383NANANANA
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us-gaap:AdditionalPaidInCapital ███▇▇▆▇▇▆▆▆▆▆▆▅▆▅▅▅▆▆▅▄▅▄▄▄▃▃▃▃▂▂▂▂▂▁▁▁1358134813211313126112371255126512341234123311931184118811601175113611301136116111701123108010891036103810131000990972942911901877858851836820806NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▇█▇▇▆▆▆▆▆▅▅▅▅▄▄▄▄▄▄▅▆▅▅▆▆▆▆▆▅▅▅▅▄▄▃▃▂▂▁230324882376230721892104214721822115204720281975193318831821185818061746174320122066199420422204222922142219212620301993201919761865174417041621150913831293NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▂▅▅▅▆▇▇▆▇▇▆▆▆▆▆▆▆▆▆▆▆▇▇▇▇▆▇▆▆▇▇▆▆▇████-165-150-82-91-81-68-54-54-55-54-51-59-58-56-60-66-66-70-66-66-66-65-45-44-45-46-57-53-57-59-51-53-60-62-39-33-28-25-29NANANA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:NetCashProvidedByUsedInOperatingActivities █▁▂▁▂▂▂1249-1187-16843483NANANANANANANANANANANANANANANANANANANANANANANANANA-115NANANA22NANANA55NA
us-gaap:NetCashProvidedByUsedInInvestingActivities █▁▆▅▆█▇-65-132-77-92-86-61-72NANANANANANANANANANANANANANANANANANANANANANANANANA-20NANANA-39NANANA4NA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁█▆█▆▆▆-57927762265803938NANANANANANANANANANANANANANANANANANANANANANANANANA149NANANA132NANANA-64NA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:NetCashProvidedByUsedInOperatingActivities █▁▂▁▂▂▂1249-1187-16843483NANANANANANANANANANANANANANANANANANANANANANANANANA-115NANANA22NANANA55NA
us-gaap:NetIncomeLoss ▁▇▆▇█▆▆▇▇▄▅▆▇▅▅▅▆▅▄▅▆▅▄▅▅▄▄▅▅▄▃▄▄▃▃▄▄▃▃▄▄▃421417323326619219022023812214818121115213616217514112817218114313015416999106140146107941111209582111126888210710174
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings4NA173233266NA190220238NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ██▇▆▆▄▄▄▄▄▄▄▃▃▃▃▃▁▁58575451514645444546454443434242403635NA32NANANA27NANANA24NANANA22NANANA15NANANA14NA
us-gaap:IncreaseDecreaseInInventories ▁▇▇▇▇▇▇▇▆▆█▇▆▇█▇▆▅█-946163775331946797-130-4920883-1129025153-67-221241NA-242NANANA40NANANA-119NANANA117NANANA66NANANA51NA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:NetCashProvidedByUsedInInvestingActivities █▁▆▅▆█▇-65-132-77-92-86-61-72NANANANANANANANANANANANANANANANANANANANANANANANANA-20NANANA-39NANANA4NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▁▄▃▅▃▁▂▅▃▂▂▃▃▆▆█▆▃▅62827792786172917969727579102100117977495NA59NANANA53NANANA42NANANA47NANANA31NANANA9NA
us-gaap:PaymentsToAcquireInvestments ▁█▁▁▂▁▁▁▂▁▂▁▁▁250017000507010NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁█▆█▆▆▆-57927762265803938NANANANANANANANANANANANANANANANANANANANANANANANANA149NANANA132NANANA-64NA
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▂▂▂▄▅▅▃▄▂▂▃▃▂▄▂▂▃█5410911612921127125117021112411015718799198128137167446NA117NANANA171NANANA130NANANA0NANANANANANANANANA
  2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30

Common Stock Value

us-gaap:CommonStockValue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value81818182828385878889909091939395969798102104104105108109110111111112112114114114113113113113112112111
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.40.40.50.50.50.50.50.50.60.60.60.60.70.70.70.70.80.80.80.90.90.91.01.01.11.11.21.31.31.41.51.51.61.71.74.4

Common Stock Par Or Stated Value Per Share

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value162163163164165167171175176179181181183186187191192194197204208208210216218221223223224225228228228227226226226225225223
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value162163163164165167171175176179181181183186187191192194197204208208210216218221223223224225228228228227226226226225225223
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-282009-02-282008-02-29
Value162163163164165167171175176179186194208221225227225223220218
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-312010-05-312009-11-30
Value16316616716717517817918418418619019319520320921121722122322722722823223123123023002282260223
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-312010-05-312009-11-30
Value16216416516617317617818118218518919119320120720821421822022322322422822822722622602232220220
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
Value0.031.321.051.411.61.141.091.251.340.680.820.991.140.820.720.850.910.720.640.830.870.680.610.710.770.450.480.630.650.470.410.490.530.420.370.490.560.390.370.480.450.34
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
Value0.031.31.041.41.591.131.091.241.330.670.810.981.130.810.720.840.90.710.630.820.860.670.60.70.760.440.470.620.640.460.410.480.520.410.360.490.550.390.360.480.440.33
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value3228496247905201536643184295476647924084410743864542
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

kmx:ExtendedprotectionplanDomain



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value731159711311198859810081778591
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.32.02.22.12.32.02.12.12.01.91.92.0
Percentage of Revenues2.32.32.02.22.12.32.02.12.12.01.91.92.0
Percentage of Revenues kmx:ExtendedprotectionplanDomain0.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:Other



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value99160150176163146144162153127128144145
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.13.23.13.43.03.43.43.43.23.13.13.33.2
Percentage of Revenues3.13.23.13.43.03.43.43.43.23.13.13.33.2
Percentage of Revenues kmx:Other0.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:OtherDomain



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value17283340332734373126323631
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.60.70.80.60.60.80.80.70.60.80.80.7
Percentage of Revenues0.50.60.70.80.60.60.80.80.70.60.80.80.7
Percentage of Revenues kmx:OtherDomain0.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:ServiceDomain



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value19272833343132363633323433
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.50.60.60.60.70.80.80.80.80.80.80.7
Percentage of Revenues0.60.50.60.60.60.70.80.80.80.80.80.80.7
Percentage of Revenues kmx:ServiceDomain0.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:ThirdpartyfinancefeesDomain



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value-10-10-9-10-15-10-8-9-14-14-12-11-11
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-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 Revenues-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 Revenues kmx:ThirdpartyfinancefeesDomain0.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:UsedVehicles



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value2786425340284346454036283547397540213429342536943843
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax86.385.784.183.684.684.082.683.483.984.083.484.284.6
Percentage of Revenues86.385.784.183.684.684.082.683.483.984.083.484.284.6
Percentage of Revenues kmx:UsedVehicles0.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:WholesaleVehicles



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value342548611678662543603628617527552547553
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.611.012.813.012.312.614.113.212.912.913.512.512.2
Percentage of Revenues10.611.012.813.012.312.614.113.212.912.913.512.512.2
Percentage of Revenues kmx:WholesaleVehicles0.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
Value322849624790520153664318429547664792408441074386454240493701399741263705354438844014351434053599375030762941324533112827260227582774247522602587267922522119234122611725
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskByBenchmark

kmx:Other



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value99160150176163146144162153127128144145
Percentage of Revenues3.13.23.13.43.03.43.43.43.23.13.13.33.2
Percentage of Revenues3.13.23.13.43.03.43.43.43.23.13.13.33.2
Percentage of Revenues kmx:Other100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:UsedVehicles



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value2786425340284346454036283547397540213429342536943843
Percentage of Revenues86.385.784.183.684.684.082.683.483.984.083.484.284.6
Percentage of Revenues86.385.784.183.684.684.082.683.483.984.083.484.284.6
Percentage of Revenues kmx:UsedVehicles100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:WholesaleVehicles



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value342548610678662543603627617527552547553
Percentage of Revenues10.611.012.813.012.312.614.113.212.912.913.512.512.2
Percentage of Revenues10.611.012.813.012.312.614.113.212.912.913.512.512.2
Percentage of Revenues kmx:WholesaleVehicles100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Sales Revenue Net

Cost Of Revenue

us-gaap:CostOfRevenue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-312010-05-312009-11-30
Value2874428941764507462337193726411541313547356737823893348731983451355332163079336334712958313532482559281028622257239023921957223322961821199219281483
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues89.086.487.286.786.286.186.786.386.286.986.986.285.786.186.486.486.186.886.986.686.586.987.186.687.086.686.586.786.786.286.686.385.785.985.185.385.9

us-gaap:ConcentrationRiskByBenchmark

kmx:Other



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value69455656433749524651474633
Percentage of CostOfRevenue2.41.11.41.30.91.01.31.31.11.41.31.20.9
Percentage of Revenues2.10.91.21.10.80.91.21.11.01.31.21.10.7
Percentage of Revenues kmx:Other69.228.437.632.226.725.934.532.030.340.036.931.922.8

kmx:UsedVehicles



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value2524379936153889404332383177354635813063306132893411
Percentage of CostOfRevenue87.888.686.686.387.587.185.386.286.786.385.887.087.6
Percentage of Revenues78.276.675.574.875.475.074.074.474.775.074.575.075.1
Percentage of Revenues kmx:UsedVehicles90.689.389.789.589.189.289.689.289.189.389.489.088.8

kmx:WholesaleVehicles



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value280444504560536443498516502433459447448
Percentage of CostOfRevenue9.810.412.112.411.611.913.412.612.212.212.911.811.5
Percentage of Revenues8.78.910.510.810.010.311.610.810.510.611.210.29.9
Percentage of Revenues kmx:WholesaleVehicles81.981.082.582.781.081.582.682.381.482.283.181.781.1

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
Value373484484480489428409453438408399405403385356366380333337330349330316297313297284283290265257254253243232236248226219225226192
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues11.69.810.19.29.19.99.59.59.110.09.79.28.99.59.69.29.29.09.58.58.79.49.38.38.49.79.78.78.89.49.99.29.19.810.39.19.310.110.49.610.011.1

Interest Expense

us-gaap:InterestExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-312010-05-312009-11-30
Value23222121172018171819171616161513111110777777778880000100
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.70.40.50.40.30.50.40.40.40.50.40.40.40.40.40.30.30.30.30.20.20.20.20.20.30.20.20.30.30.30.00.00.00.00.10.00.0

Gross Profit

us-gaap:GrossProfit



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
Value354672613693742599569650661536539604648562503545572489464521543475446463501384381434448369345367381338303354383320297349333242
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues11.013.612.813.313.813.913.313.713.813.113.113.814.313.913.613.613.913.213.113.413.513.513.112.913.412.513.013.413.513.113.313.313.813.713.413.714.314.214.114.914.714.1

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
Value373484484480489428409453438408399405403385356366380333337330349330316297313297284283290265257254253243232236248226219225226192
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues11.69.810.19.29.19.99.59.59.110.09.79.28.99.59.69.29.29.09.58.58.79.49.38.38.49.79.78.78.89.49.99.29.19.810.39.19.310.110.49.610.011.1

Interest Expense

us-gaap:InterestExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-312010-05-312009-11-30
Value23222121172018171819171616161513111110777777778880000100
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.70.40.50.40.30.50.40.40.40.50.40.40.40.40.40.30.30.30.30.20.20.20.20.20.30.20.20.30.30.30.00.00.00.00.10.00.0

Other Nonoperating Income Expense

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-30
Value-3-16002-20000000-100-9-1-10-1000-100000000
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.1-0.00.1-0.00.00.1-0.10.0-0.00.00.00.00.0-0.0-0.00.00.0-0.3-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.0-0.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-312010-05-312009-11-30
Value0615471846357688187761081268983991078579107114809610566869057697449697750676341
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.01.21.11.41.61.51.31.41.72.21.92.52.82.22.22.52.62.32.32.82.82.42.72.82.32.72.72.22.52.72.22.72.92.42.92.82.4

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-31
Value-10146182223253178190221237129157180210156143162178137127172180128155170103143148961191227610612278102
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-0.33.03.84.34.74.14.44.65.03.23.84.14.63.93.94.14.33.73.64.44.53.84.34.53.54.44.53.74.34.43.44.14.63.74.4

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
Value421417323326619219022023812214818121115213616217514112817218114313015416999106140146107941111209582111126888210710174
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.24.33.64.55.04.54.44.65.03.03.64.14.73.83.74.14.23.83.64.44.54.13.84.34.53.23.64.34.43.83.64.04.43.83.74.34.73.93.94.64.54.3

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value4173233266190220238
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.23.64.55.04.44.65.0
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

Net Income Loss Available To Common Stockholders Diluted

Assets

us-gaap:Assets



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value199722108220487201401971418717183961817617756174861730316875164751627915760155041478914481143811395213670131981284312399121481170711303109331045098889297887185988331763373587160683966952556
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value1639417313167891652816261153601496114694143721416914002136741332313170127441244111817115761146910741103961004196619041881983908015774873756869627459215777565849964806472945484511622
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets82.182.181.982.182.582.181.380.880.981.080.981.080.980.980.980.279.979.979.877.076.076.175.272.972.671.770.970.970.669.567.566.867.267.965.565.366.166.567.424.4

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value199722108220487201401971418717183961817617756174861730316875164751627915760155041478914481143811395213670131981284312399121481170711303109331045098889297887185988331763373587160683966952556
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value3283366334503384328332143057302229573061300428032734287326842755241624712634250326652599257325162636264325582481245423102085196119311853164814951540141013371556
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.417.416.816.816.717.216.616.616.717.517.416.616.617.717.017.816.317.118.317.919.519.720.020.321.722.622.622.723.523.422.422.122.522.221.620.321.520.620.060.9

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312010-02-282009-11-302009-02-282008-02-29
Value65858564042463537764426256038233165237331003512718935453262766475072544944545845644238318115641745513181514012
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.30.30.30.20.20.30.20.20.40.30.20.20.40.20.22.00.40.30.20.72.60.21.52.94.45.45.96.96.94.54.85.25.35.35.02.52.20.61.10.00.00.70.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value145191142141133139111104101133959910415292941021328810010313788108977968857091627065865464851196699
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.90.70.70.70.70.60.60.60.80.60.60.60.90.60.60.70.90.60.70.81.00.70.90.80.70.60.80.70.90.70.80.81.00.70.91.21.71.03.9

Inventory Net

us-gaap:InventoryNet



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value189928462682260425512519242423572260239024402231214822602170191818641932215319111844208619641708168116411556136413981517133911981210109210131061111610491002843
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.513.513.112.912.913.513.213.012.713.714.113.213.013.913.812.412.613.315.013.713.515.815.313.813.814.013.812.513.415.314.413.514.113.113.314.415.615.315.033.0

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value10086109114776759758893534135414145322632452944483826262026152124221017921933207
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.40.50.60.40.40.30.40.50.50.30.20.20.30.30.30.20.20.20.30.20.30.40.30.20.20.20.20.10.20.30.20.10.20.10.30.10.50.30.3

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value4336412538313559308726852383207718551687
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.622.021.921.921.320.320.421.022.324.7

us-gaap:PropertyPlantAndEquipmentByType

kmx:FurnitureFixturesAndEquipment



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value750671600525443389343311273248
Percentage of PropertyPlantAndEquipmentGross17.316.315.714.814.414.514.415.014.714.8
Percentage of Assets3.63.63.43.23.13.02.93.23.33.6
Percentage of Assets kmx:FurnitureFixturesAndEquipment0.00.00.00.00.00.00.00.00.00.0

kmx:LandHeldForDevelopment



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value738177988515117016811972
Percentage of PropertyPlantAndEquipmentGross1.72.02.02.82.85.67.18.16.44.3
Percentage of Assets0.30.40.40.60.61.11.51.71.41.1
Percentage of Assets kmx:LandHeldForDevelopment0.00.00.00.00.00.00.00.00.00.0

us-gaap:Building



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value2186221120811934165013891244111910331005
Percentage of PropertyPlantAndEquipmentGross50.453.654.354.353.551.752.253.955.759.6
Percentage of Assets10.411.811.911.911.410.510.611.312.414.7
Percentage of Assets us-gaap:Building0.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value171125134179224209145899244
Percentage of PropertyPlantAndEquipmentGross3.93.03.55.17.37.86.14.35.02.7
Percentage of Assets0.80.70.81.11.51.61.20.91.10.7
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.0

us-gaap:Land



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value874789722627510397346275232221
Percentage of PropertyPlantAndEquipmentGross20.219.118.817.616.514.814.513.212.513.2
Percentage of Assets4.14.24.13.93.53.03.02.82.83.2
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value2782472151931741461291069583
Percentage of PropertyPlantAndEquipmentGross6.46.05.65.45.75.45.45.15.14.9
Percentage of Assets1.31.31.21.21.21.11.11.11.11.2
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-02-282012-02-292011-02-28
Value12981266123911991173129712631230116411401110108010411010984954925901876849822799778754730707690648576511
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.56.06.06.06.06.96.96.86.76.66.66.66.46.46.36.56.46.36.36.26.26.26.36.26.26.36.36.66.97.5

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value3064306930362981292628282800276627142667263426022557251824492326223421612105201618961862183317531696165215881535144414281411134713051278988976949920893893
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.314.614.814.814.815.115.215.215.315.315.215.415.515.515.515.015.114.914.614.513.914.114.314.114.014.114.114.013.814.515.215.215.215.312.913.313.313.513.335.0

Goodwill

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value896163150161175160151143128
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.30.40.91.11.31.41.51.71.9

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value266258201185203185182190185158154147145140137138133149148149138133131128116110112104102107101103981061019899969449
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.21.00.91.01.01.01.01.00.90.90.90.90.90.90.90.91.01.01.11.01.01.01.01.00.91.01.01.01.11.11.21.21.31.31.31.41.41.41.9

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value1151153414211396148513111224128312881174111112011166110510271084108310059231001999997928906962875748729710684575525618646531490576508469477
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.87.36.96.97.57.06.77.17.36.76.47.17.16.86.57.07.36.96.47.27.37.67.27.37.97.56.66.76.86.96.25.97.27.87.06.78.17.47.018.7

Debt Current

us-gaap:DebtCurrent



Period End2020-05-312020-02-29
Value439433
Percentage of DebtCurrent100.0100.0
Percentage of Assets2.22.1

Long Term Debt Current

us-gaap:LongTermDebtCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value99810141000000122
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.10.10.10.00.00.00.00.04.8

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value390737641628656593558605586529519568510494476486454441420453446454459418433427367346316336272221293324246243288269218253
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.03.53.13.13.33.23.03.33.33.03.03.43.13.03.03.13.13.12.93.33.33.43.63.43.63.73.33.23.03.42.92.53.43.93.23.34.03.93.39.9

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value011178315500141031208920159100942815800048313738006
Percentage of AccruedIncomeTaxesCurrent0.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.40.00.00.30.00.00.10.60.00.00.00.60.00.00.00.40.00.00.00.80.00.10.00.60.00.00.00.60.00.20.10.50.00.00.2

Long Term Debt

us-gaap:LongTermDebt



Period End2020-05-312020-02-292019-02-28
Value144161494413776
Percentage of LongTermDebt100.0100.0100.0
Percentage of Assets72.270.973.6

us-gaap:LongtermDebtType

kmx:A3.86seniornotesdues2023



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-29
Value100100100100100100100100100100100100100100100100600
Percentage of LongTermDebt0.70.70.00.00.00.70.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.50.50.50.50.50.50.50.60.60.60.60.60.60.60.60.60.40.0
Percentage of Assets kmx:A3.86seniornotesdues20230.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:A4.17seniornotesdue2026



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-29
Value2002002002002002002002002002002002002002002002001200
Percentage of LongTermDebt1.41.30.00.00.01.50.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets1.00.91.01.01.01.11.11.11.11.11.21.21.21.21.31.30.80.0
Percentage of Assets kmx:A4.17seniornotesdue20260.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:A4.27seniornotesdue2028



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-29
Value2002002002002002002002002002002002002002002002001200
Percentage of LongTermDebt1.41.30.00.00.01.50.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets1.00.91.01.01.01.11.11.11.11.11.21.21.21.21.31.30.80.0
Percentage of Assets kmx:A4.27seniornotesdue20280.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevolvingCreditFacility



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-02-28
Value370452377379274366194450197245180155910141510
Percentage of LongTermDebt2.63.00.00.00.02.70.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets1.92.11.81.91.42.01.10.20.01.11.40.10.01.00.60.00.02.90.1
Percentage of Assets us-gaap:RevolvingCreditFacility0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Long Term Debt Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value141768489909362786735
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.40.50.50.60.70.50.80.80.5

us-gaap:RetirementPlanType

kmx:RestorationPlan



Period End2020-02-292019-02-282018-02-282017-02-28
Value11101010
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent8.413.912.511.6
Percentage of Assets0.10.10.10.1
Percentage of Assets kmx:RestorationPlan0.00.00.00.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-02-292019-02-282018-02-282017-02-28
Value129657478
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent91.686.187.588.4
Percentage of Assets0.60.40.40.5
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value391393317299289243242233223242239239231238232226222229229225220225182176168174190181171175145140136148119119123130127117
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.01.91.61.51.51.31.31.31.31.41.41.41.41.51.51.51.51.61.61.61.61.71.41.41.41.51.71.71.61.81.61.61.61.81.61.61.71.91.94.6

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-282009-02-282008-02-29
Value357837683698361134523357343534823383331633003200315231083015306229722904291132103274315631823357332933163288318430753019302329492820267326362552243022912183193315931488
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.917.918.117.917.517.918.719.219.119.019.119.019.119.119.119.820.120.120.223.024.023.924.827.127.428.329.129.129.430.532.533.232.832.134.534.733.933.532.675.60.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-282009-02-282008-02-29
Value-165-150-82-91-81-68-54-54-55-54-56-70-65-46-59-62-25-19-16-16
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-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-0.8-0.7-0.4-0.5-0.4-0.4-0.3-0.3-0.3-0.3-0.3-0.5-0.5-0.4-0.6-0.7-0.4-0.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-282009-02-282008-02-29
Value13581348132113131261123712551265123412341188113011231038972877820746685641
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest38.035.835.736.436.536.936.636.436.537.238.238.935.631.332.232.835.838.643.143.1
Percentage of Assets6.86.46.56.56.46.66.87.07.07.17.37.88.58.99.810.512.029.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-282009-02-282008-02-29
Value818181828283858788899397104110112113112111110109
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest2.32.22.22.32.42.52.52.52.62.73.03.43.33.33.74.24.95.86.97.3
Percentage of Assets0.40.40.40.40.40.40.50.50.50.50.60.70.80.91.11.41.74.40.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-282009-02-282008-02-29
Value230324882376230721892104214721822115204718831746199422141993174413831095813754
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest64.466.064.363.963.462.762.562.762.561.760.660.163.266.866.065.360.456.751.150.7
Percentage of Assets11.511.811.611.511.111.211.712.011.911.711.612.115.118.920.220.920.242.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value81818182828385878889909091939395969798102104104105108109110111111112112114114114113113113113112112111
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.40.40.50.50.50.50.50.50.60.60.60.60.70.70.70.70.80.80.80.90.90.91.01.01.11.11.21.31.31.41.51.51.61.71.74.4

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value1358134813211313126112371255126512341234123311931184118811601175113611301136116111701123108010891036103810131000990972942911901877858851836820806746
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.86.46.56.56.46.66.87.07.07.17.17.17.27.37.47.67.77.87.98.38.68.58.48.88.58.99.09.19.59.810.110.310.510.511.311.611.712.012.029.2

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value2303248823762307218921042147218221152047202819751933188318211858180617461743201220661994204222042229221422192126203019932019197618651744170416211509138312931095
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.511.811.611.511.111.211.712.011.911.711.711.711.711.611.612.012.212.112.114.415.115.115.917.818.418.919.619.519.420.221.722.321.720.922.322.021.120.219.342.9

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-282009-02-28
Value-165-150-82-91-81-68-54-54-55-54-51-59-58-56-60-66-66-70-66-66-66-65-45-44-45-46-57-53-57-59-51-53-60-62-39-33-28-25-29-19-16
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-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:StatementEquityComponents

kmx:UnrecognizedActuarialLosses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-282010-02-282009-02-28
Value-120-121-69-69-70-70-67-67-68-68-54-54-55-55-55-55-56-56-58-58-58-59-38-38-38-38-48-48-49-49-39-39-39-39-17-17-17-19-16
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax72.980.884.676.186.4103.6124.5124.5123.8126.1106.692.294.998.292.784.184.180.487.488.688.690.683.086.184.183.785.790.885.682.775.673.665.063.744.152.070.0100.0100.0
Percentage of Assets-0.6-0.6-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3-0.4-0.4-0.5-0.5-0.4-0.4-0.5-0.5-0.2-0.2-0.3-0.80.0
Percentage of Assets kmx:UnrecognizedActuarialLosses0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

kmx:UnrecognizedHedgeLosses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-282010-02-282009-02-28
Value-44-28-12-21-112131313143-4-2-1-4-10-10-13-8-7-7-6-7-6-7-7-8-4-8-10-12-14-21-22-21-16-700
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax27.119.215.423.913.6-3.6-24.5-24.5-23.8-26.1-6.67.85.11.87.315.915.919.612.611.411.49.417.013.915.916.314.39.214.417.324.426.435.036.355.948.030.0-0.0-0.0
Percentage of Assets-0.2-0.1-0.1-0.1-0.10.00.10.10.10.10.0-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.0-0.1-0.0-0.1-0.1-0.1-0.0-0.1-0.1-0.1-0.2-0.2-0.3-0.3-0.2-0.10.00.0
Percentage of Assets kmx:UnrecognizedHedgeLosses0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312011-05-312010-05-31
Value1249-1187-16843483-1152255
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues38.7-2.40.2-3.20.81.10.1-4.20.82.5

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312011-05-312010-05-31
Value-65-132-77-92-86-61-72-20-394
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-2.0-2.7-1.6-1.8-1.6-1.4-1.7-0.7-1.50.2

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312011-05-312010-05-31
Value-57927762265803938149132-64
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-18.05.61.35.11.50.90.95.44.9-2.9

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312011-05-312010-05-31
Value1249-1187-16843483-1152255
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues38.7-2.40.2-3.20.81.10.1-4.20.82.5

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-312009-11-30
Value421417323326619219022023812214818121115213616217514112817218114313015416999106140146107941111209582111126888210710174
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.24.33.64.55.04.54.44.65.03.03.64.14.73.83.74.14.23.83.64.44.54.13.84.34.53.23.64.34.43.83.64.04.43.83.74.34.73.93.94.64.54.3

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value4173233266190220238
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.23.64.55.04.44.65.0
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value58575451514645444546454443434242403635322724221514
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value-946163775331946797-130-4920883-1129025153-67-221241-24240-1191176651
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312011-05-312010-05-31
Value-65-132-77-92-86-61-72-20-394
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-2.0-2.7-1.6-1.8-1.6-1.4-1.7-0.7-1.50.2

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value6282779278617291796972757910210011797749559534247319
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-28
Value250017000507010
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302012-05-312011-05-312010-05-31
Value-57927762265803938149132-64
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-18.05.61.35.11.50.90.95.44.9-2.9

Proceeds From Issuance Of Long Term Debt

Repayments Of Long Term Debt

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value54109116129211271251170211124110157187991981281371674461171711300
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Repayments Of Long Term Debt

Effective Income Tax Rate Continuing Operations

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:StockOption



Period End2020-05-312020-02-292019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-05-312017-02-282016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-02-29
Value86877897979777779911101111111012
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:StockOption



Period End2020-05-312020-02-292019-05-312019-02-282018-05-312018-02-282017-05-312017-02-282016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-02-29
Value66.0664.8562.7157.9656.3854.5951.8650.046.6744.6744.2543.643.3535.5934.1733.5630.427.0226.2926.2526.0523.019.84
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-31
Value000000000000000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.00.00.0100.0100.00.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-31
Value000000000000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod29.122.80.0200.00.032.11703.20.041.625.326.70.00.025.241.843.553.850.9

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value25102923451372528915171819112931511231522151513
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value2201018384603925154339
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value309162146235222215185166186168
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-282010-02-282009-02-28
Value293031302930313029283030292930272726272726242928272628302625192018201818182125
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value0001111121
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-28
Value4434494544564660
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.00.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-29
Value1261656630637633595569599621554525540555523477
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value000000-220000000000-2000000
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Sale Of Short Term Investments

kmx:FinanceLeaseCost



Period End2020-05-312019-11-302019-08-312019-05-31
Value3332
Percentage of FinanceLeaseCost100.0100.0100.0100.0

kmx:Financingobligationsincurred



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value016922299
Percentage of Financingobligationsincurred0.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskByBenchmark

kmx:ItemAsPercentOfNetSalesAndOperatingRevenues

kmx:EarningsBeforeIncomeTaxes



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.001-0.00100000000000000090.0480.0590.065-0.00100000000000000090.0580.0610.067-0.00300000000000000270.0550.0660.074-0.00200000000000000180.0590.0650.069-0.00100000000000000090.0590.0720.0740.00.0620.07
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

kmx:GrossProfit



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.110.00100000000000000090.1280.1330.1380.00.1330.1370.138-0.00100000000000000090.1310.1380.1430.00100000000000000090.1360.1360.139-0.00100000000000000090.1310.1340.1350.00100000000000000090.1310.129
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues11000.0-100.0266.7225.4212.3-0.0229.3224.6206.033.3238.2209.1193.2-50.0230.5209.2201.4100.0222.0186.1182.40.0211.3184.3

kmx:IncomeTaxProvision



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.0-0.00100000000000000090.0110.0140.0160.00.0130.0140.017-0.00100000000000000090.0190.0250.028-0.00100000000000000090.0220.0250.0260.00.0230.0280.0280.00.0240.027
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues0.0100.022.923.724.6-0.022.423.025.433.334.537.937.850.037.338.537.7-0.039.038.937.80.038.738.6

kmx:NetEarnings



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.0020.00.0360.0450.05-0.00100000000000000090.0440.0460.05-0.00300000000000000270.0360.0410.047-0.00100000000000000090.0370.0410.042-0.00100000000000000090.0360.0440.0450.00.0380.043
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues200.0-0.075.076.376.9100.075.975.474.6100.065.562.163.550.062.763.160.9100.061.061.160.80.061.361.4

kmx:NetIncomeLossFromFinancing



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.0160.00.0240.0220.0220.00.0260.0230.0240.00.0250.0250.024-0.00100000000000000090.0240.0240.0240.00.0260.0250.0270.00.0260.026
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues1600.0-0.050.037.333.8-0.044.837.735.8-0.045.537.932.450.040.736.934.8-0.044.134.736.50.041.937.1

kmx:NetSalesAndOperatingRevenues



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value1.00.01.01.01.00.01.01.01.00.01.01.01.00.01.01.01.00.01.01.01.00.01.01.0
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues100000.0-0.02083.31694.91538.5-0.01724.11639.31492.5-0.01818.21515.21351.4-0.01694.91538.51449.3-0.01694.91388.91351.40.01612.91428.6

us-gaap:CostOfSales



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.89-0.00100000000000000090.8720.8670.8620.00.8670.8630.8620.00100000000000000090.8690.8620.857-0.00100000000000000090.8640.8640.8610.00100000000000000090.8690.8660.865-0.00100000000000000090.8690.871
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues89000.0100.01816.71469.51326.2-0.01494.81414.81286.6-33.31580.01306.11158.150.01464.41329.21247.8-100.01472.91202.81168.90.01401.61244.3

us-gaap:InterestExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.0070.00.0050.0040.0030.00.0040.0040.0040.00.0040.0040.0040.0010.0040.0030.0030.00.0030.0020.0020.00.0020.002
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues700.0-0.010.46.84.6-0.06.96.66.0-0.07.36.15.4-50.06.84.64.3-0.05.12.82.70.03.22.9

us-gaap:NonoperatingIncomeExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.0010.0-0.0010.00.00.00.0010.00.00.00.00.00.00.00.00.00.00.0010.00.00.00.00.00.0
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues100.0-0.0-2.10.00.0-0.01.70.00.0-0.00.00.00.0-0.00.00.00.0-100.00.00.00.00.00.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.1160.00.1010.0920.0910.00100000000000000090.0950.0950.0910.00100000000000000090.0970.0920.0890.00100000000000000090.0960.0920.0920.00.0950.0850.0870.00200000000000000180.0930.083
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues11600.0-0.0210.4155.9140.0-100.0163.8155.7135.8-33.3176.4139.4120.3-50.0162.7141.5133.3-0.0161.0118.1117.60.0150.0118.6

us-gaap:ConcentrationRiskByBenchmark, us-gaap:IncomeStatementLocation

kmx:Other, kmx:NetSalesAndOperatingRevenues



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value0.0310.00.0310.0340.030.00.0340.0340.0320.00.0310.0330.032
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues3100.0-0.064.657.646.2-0.058.655.747.8-0.056.450.043.2

kmx:Other, us-gaap:CostOfSales



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value0.0210.00.0120.0110.008-0.00099999999999999920.0120.0110.010.00.0120.0110.007
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues2100.0-0.025.018.612.3100.020.718.014.9-0.021.816.79.5

kmx:UsedVehicles, kmx:NetSalesAndOperatingRevenues



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value0.8630.00400000000000000360.8410.8360.8460.00200000000000000180.8260.8340.8390.00.8340.8420.846
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues86300.0-400.01752.11416.91301.5-200.01424.11367.21252.2-0.01516.41275.81143.2

kmx:UsedVehicles, us-gaap:CostOfSales



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value0.7820.00300000000000000270.7550.7480.7540.00100000000000000090.740.7440.7470.00.7450.750.751
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues78200.0-300.01572.91267.81160.0-100.01275.91219.71114.9-0.01354.51136.41014.9

kmx:WholesaleVehicles, kmx:NetSalesAndOperatingRevenues



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value0.106-0.00400000000000000360.1280.130.123-0.00100000000000000090.1410.1320.1290.00.1350.1250.122
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues10600.0400.0266.7220.3189.2100.0243.1216.4192.5-0.0245.5189.4164.9

kmx:WholesaleVehicles, us-gaap:CostOfSales



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value0.087-0.0029999999999999890.1050.1080.1-0.00200000000000000180.1160.1080.1050.00.1120.1020.099
Percentage of ItemAsPercentOfNetSalesAndOperatingRevenues8700.0300.0218.8183.1153.8200.0200.0177.0156.7-0.0203.6154.5133.8

us-gaap:ConcentrationRiskByBenchmark

kmx:ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly

kmx:CarmaxAutoFinanceIncome



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.0150.00.0340.0350.037-0.00100000000000000090.0360.0360.039-0.00100000000000000090.0360.0390.04-0.00200000000000000180.0350.0380.041-0.00200000000000000180.040.0440.05-0.00100000000000000090.0450.048
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:InterestAndFeeIncome



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.0840.00.0840.0850.0840.00.080.080.079-0.00100000000000000090.0760.0770.0760.00.0750.0760.0760.00.0740.0760.076-0.00100000000000000090.0760.078
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly560.00.0247.1242.9227.0-0.0222.2222.2202.6100.0211.1197.4190.0-0.0214.3200.0185.4-0.0185.0172.7152.0100.0168.9162.5

kmx:InterestIncomeExpenseNet



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.0590.00.0570.0570.056-0.00100000000000000090.0560.0570.057-0.00100000000000000090.0570.0580.058-0.0009999999999999940.0580.0590.059-0.00100000000000000090.060.0620.0630.00.0640.066
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly393.30.0167.6162.9151.4100.0155.6158.3146.2100.0158.3148.7145.050.0165.7155.3143.950.0150.0140.9126.0-0.0142.2137.5

kmx:OtherDirectExpenses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-0.0040.0-0.004-0.005-0.0050.0-0.004-0.004-0.0040.0-0.004-0.004-0.0040.0-0.004-0.004-0.0040.0-0.004-0.004-0.0040.0-0.004-0.004
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly-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



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-0.0030.0-0.003-0.003-0.0030.0-0.003-0.003-0.0030.0-0.003-0.003-0.0030.0-0.003-0.003-0.0030.0-0.003-0.003-0.0030.0-0.003-0.003
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly-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



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-0.0360.0-0.015-0.014-0.012-0.0009999999999999992-0.013-0.013-0.010.0-0.013-0.012-0.011-0.0009999999999999992-0.016-0.014-0.011-0.0009999999999999992-0.013-0.011-0.0060.0-0.012-0.011
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly-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



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-0.0070.0-0.008-0.008-0.0080.0-0.007-0.008-0.0070.0-0.008-0.007-0.0070.0-0.007-0.007-0.0070.0-0.007-0.007-0.0070.0-0.007-0.007
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly-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



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value0.0230.00.0420.0430.044-0.00100000000000000090.0430.0440.047-0.00100000000000000090.0440.0460.048-0.00200000000000000180.0410.0450.048-0.0009999999999999940.0470.0510.057-0.00100000000000000090.0520.055
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly153.30.0123.5122.9118.9100.0119.4122.2120.5100.0122.2117.9120.0100.0117.1118.4117.150.0117.5115.9114.0100.0115.6114.6

kmx:TotalOtherNonoperatingExpenseIncomePercent



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312017-11-302017-08-31
Value-0.0010.00.00.00.00.00.00.0
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly-6.70.00.00.00.00.00.00.0

us-gaap:InterestExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value-0.0250.0010000000000000009-0.027-0.028-0.028-0.0010000000000000009-0.024-0.023-0.0220.0-0.02-0.019-0.0180.0-0.017-0.017-0.0160.0-0.014-0.014-0.0130.0-0.012-0.012
Percentage of ItemAsPercentOfTotalAverageManagedReceivablesPrincipalOnly-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



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-08-312010-05-31
Value501111141141161031091091151011021071098289951009292981099089929480838487757275756662636954555257
Percentage of NetIncomeLossFromFinancing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsForNewAccountingPronouncements

kmx:NewAccountingPronouncementorChangeinAccountingPrincipleCummulativeEffect

us-gaap:AccountingStandardsUpdate201613



Period End2020-05-31
Value-153306000.0
Percentage of NewAccountingPronouncementorChangeinAccountingPrincipleCummulativeEffect100.0

us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents

us-gaap:AccountingStandardsUpdate201613, us-gaap:RetainedEarnings



Period End2020-05-31
Value-153306000.0
Percentage of NewAccountingPronouncementorChangeinAccountingPrincipleCummulativeEffect100.0

us-gaap:AwardType, us-gaap:PlanName

kmx:PSUconversionthreshold

us-gaap:PerformanceShares, kmx:Fiscal2018grants



Period End2020-05-31
Value1.19
Percentage of PSUconversionthreshold100.0

us-gaap:PerformanceShares, kmx:Fiscal2020GrantsYear1



Period End2020-05-31
Value1.17
Percentage of PSUconversionthreshold98.3

kmx:PaymentsOnNonRecourseDebt



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value2420289726692649249225662556253523432320255022762149209521922154195219312141265615181261556
Percentage of PaymentsOnNonRecourseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:PaymentsOnRevolvingLineOfCreditAndLongTermDebt



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-11-302014-05-31
Value1062149614171475180913841305441101512531217772917124925917120810685533000
Percentage of PaymentsOnRevolvingLineOfCreditAndLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

kmx:ProceedsFromIssuanceOfNonRecourseDebt



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value1982319028482897285127092697281826682477273325772410237523912585225921232324304718971774698
Percentage of ProceedsFromIssuanceOfNonRecourseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:ProceedsFromRevolvingLineOfCreditAndLongTermDebt



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-11-302014-05-31
Value97715701414157817151556145748381712061444790762131434921710939191117203000
Percentage of ProceedsFromRevolvingLineOfCreditAndLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

kmx:ProvisionForContractCancellationReserves



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-31
Value132419202581618201116171712151718161820219
Percentage of ProvisionForContractCancellationReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:RepaymentsOfLongTermFinanceAndCapitalLeaseObligations



Period End2020-05-312019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-31
Value11002222222222233344332
Percentage of RepaymentsOfLongTermFinanceAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionValue

us-gaap:EmployeeStock



Period End2020-02-29
Value10000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionValue100.0

us-gaap:AwardType

kmx:SharebasedCompensationArrangementbySharebasedPaymentAwardPaymentsUponVesting

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312019-05-312018-05-312017-05-312016-05-31
Value3436202522
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardPaymentsUponVesting100.0100.0100.0100.0100.0

kmx:Totalaveragemanagedreceivables



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-31
Value134081323913012127071232112067117751136511112108291029710049974592618993
Percentage of Totalaveragemanagedreceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value17810189916
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value17810189916
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllocatedShareBasedCompensationExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-31
Value251129244514725299161819191129316121023192215171523161415111115118
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value702013263-215122893124912-22010101138512952333
Percentage of AllocatedShareBasedCompensationExpense28.98.769.254.057.426.5-33.060.741.922.052.453.616.361.638.230.838.9-39.824.55.045.751.448.820.046.638.352.055.538.217.136.030.522.0

kmx:DeferredStockUnits



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-31
Value000100000000
Percentage of AllocatedShareBasedCompensationExpense0.00.80.08.11.03.15.71.10.00.00.00.0

kmx:Othersharebasedincentives



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value0101311010002
Percentage of AllocatedShareBasedCompensationExpense2.916.40.57.46.910.414.63.74.69.72.5-0.010.6

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value522342224122322332222334223224223
Percentage of AllocatedShareBasedCompensationExpense22.822.99.612.69.719.335.610.315.717.513.313.918.911.220.912.511.540.221.425.312.215.315.326.217.418.816.415.619.126.420.719.823.3

us-gaap:EmployeeStock



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value000000000000000000000000000000000
Percentage of AllocatedShareBasedCompensationExpense2.15.01.41.71.13.34.81.51.64.12.12.12.21.92.61.21.35.62.53.21.61.41.42.11.52.11.21.51.91.41.92.31.5

us-gaap:EmployeeStockOption



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value115661166611555104415135558668557458
Percentage of AllocatedShareBasedCompensationExpense45.452.020.726.026.043.782.825.337.750.931.832.454.222.940.451.241.286.948.053.636.531.630.351.734.637.630.327.437.155.1

us-gaap:PerformanceShares



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-31
Value0100200000001000200000000
Percentage of AllocatedShareBasedCompensationExpense0.610.4-0.8-2.44.94.94.21.21.41.00.4-4.77.11.2-4.10.76.75.52.83.33.80.00.00.00.0

us-gaap:RestrictedStock



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value00000000000000010000000000000000
Percentage of AllocatedShareBasedCompensationExpense0.10.20.00.00.0-0.90.0-0.21.74.50.12.61.41.32.13.60.51.60.89.60.30.34.20.00.00.00.00.00.00.00.30.9

us-gaap:IncomeStatementLocation

kmx:CarmaxAutoFinanceIncome



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value101110011000000000000000000000
Percentage of AllocatedShareBasedCompensationExpense5.06.94.44.34.05.57.94.84.16.15.64.64.34.45.62.52.85.84.24.20.74.54.24.34.64.73.44.34.43.0

us-gaap:CostOfSales



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value002120011001010110001110101100
Percentage of AllocatedShareBasedCompensationExpense2.70.87.25.56.22.8-4.66.34.42.96.05.91.27.35.03.64.3-3.53.30.24.45.95.52.16.03.85.56.74.62.6

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value23102621401272226914161817102729511922172014151421141314
Percentage of AllocatedShareBasedCompensationExpense92.492.388.490.289.891.796.688.991.691.088.589.594.588.389.493.992.997.792.695.694.989.690.393.689.491.491.289.091.094.4

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-31
Value411322323232211012211034333113
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-31
Value-200202-13-6040-1-1-14200-109-25-101
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-31
Value60426-743726-29-226629-14-1531
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value250-4-591-1-136612-462-70725-710067815
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DirectOperatingCosts



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value232825252423212322212120191917161716151514141313121212111010111111
Percentage of DirectOperatingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312019-05-312018-05-312017-05-31
Value910510
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312019-05-312018-05-312017-05-31
Value3317
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions31.938.025.067.3

us-gaap:StockOption



Period End2020-05-312019-05-312018-05-312017-05-31
Value0511
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions2.153.021.412.5

us-gaap:FinanceLeaseInterestExpense



Period End2020-05-312019-11-302019-08-312019-05-31
Value2211
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability



Period End2020-05-312019-05-31
Value10
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0

us-gaap:FinanceLeasePrincipalPayments



Period End2020-05-312019-05-31
Value10
Percentage of FinanceLeasePrincipalPayments100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization



Period End2020-05-312019-11-302019-08-312019-05-31
Value1111
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0

us-gaap:FinancingInterestExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value848990908781756963585552494644413935333028242323222222232325252628
Percentage of FinancingInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value263635343633332833332927312826252824242122221821181818141414141415
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value7085817665767464587168605466625545515142344336323631262824-202423-19
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDispositionOfAssets



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value-5-33-1-11-20-10000-2-100-10-1000000
Percentage of GainLossOnDispositionOfAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-312010-05-312009-11-30
Value4276227305351255247289319210225290338242219261282226207279295210250275173227237152181195132180203133175164115
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value-3826447-1088164-35-248147-76145266-51-206654-50-31400-74024
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value-464817-52863-3137-3-5-4760-2-7-2943-12-3417-21-20-345
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInFinanceReceivables



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value-433328259334386171199337337197242312325309243313343249232390415425181
Percentage of IncreaseDecreaseInFinanceReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssets



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value13-22-638108-18-15-62946-5-3-11124-2-14-140-7-7
Percentage of IncreaseDecreaseInOtherCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets



Period End2020-05-312019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value35-216004320001000000-32-222
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value-31-22-19-20-47-16-7-17-48-14-22-16-29-13-13-18-31-18-16-33-30-9-15-10-3
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

kmx:StockSettledStockUnitsAndAwards



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-31
Value0000000000000000000
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeStockOption



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value01111101111110112222333323
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements156.4412.7465.8313.5280.1322.0259.1341.4403.6268.7278.9329.7263.30.0287.4335.4271.1304.2365.4468.20.00.00.00.00.00.0

us-gaap:InterestAndFeeIncomeLoansAndLeases



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value282283278275266250247242232219217213206195192190184175172169164152150147138137133125123120114111107
Percentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value75140139139140127131133137122124128129102106112118109108113123103106108969699838686737480
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseNet



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value1971931881851781691721731681601611611571481481481441401391391361271261231161141101019995888579
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidCapitalized



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-11-302014-05-31
Value0211111111221232212200
Percentage of InterestPaidCapitalized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:LaborAndRelatedExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value11111010109999988877777776666555555555
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost



Period End2020-05-312019-11-302019-08-312019-05-31
Value18171717
Percentage of LeaseCost100.0100.0100.0100.0

us-gaap:SubsequentEventType

us-gaap:LineOfCreditFacilityIncreaseDecreaseForPeriodNet

us-gaap:SubsequentEvent



Period End2020-03-31
Value675
Percentage of LineOfCreditFacilityIncreaseDecreaseForPeriodNet100.0

us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification

us-gaap:AccountingStandardsUpdate201613



Period End2020-05-31
Value202
Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification100.0

us-gaap:Range, kmx:EstimatedImpactofNewAccountingPronouncementsAxis

srt:Maximum, us-gaap:AccountingStandardsUpdate201613



Period End2020-02-29
Value0
Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification0.0

srt:Minimum, us-gaap:AccountingStandardsUpdate201613



Period End2020-02-29
Value0
Percentage of NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification0.0

us-gaap:OperatingLeaseCost



Period End2020-05-312019-11-302019-08-312019-05-31
Value14141414
Percentage of OperatingLeaseCost100.0100.0100.0100.0

us-gaap:OperatingLeasePayments



Period End2020-05-312019-05-31
Value1414
Percentage of OperatingLeasePayments100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value051000300020000000-1000000000000
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value-16-169-10-13-1000-198-1-13603-500-1-110-332171
Percentage of OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-31
Value-18-707-11-13-1211077-2-224-11-5-2-2-10
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

kmx:UnrecognizedActuarialLosses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-31
Value0-52000-3000-2000000010000
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-0.074.60.0-0.0-0.026.70.00.0-0.0-35.60.0-0.0-0.0-0.90.0-0.00.0-27.6-0.0-0.0-0.00.0

kmx:UnrecognizedHedgeLosses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-31
Value-18-177-11-13-911097-2-224-11-6-2-2-10
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.025.4100.0100.0100.073.3100.0100.0100.0135.6100.0100.0100.0100.9100.0100.0100.0127.6100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-312017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-31
Value-169-10-1300-18-1-160300
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-05-312013-05-31
Value-15-689-10-13-1300078-1-13603-300-102
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

kmx:UnrecognizedActuarialLosses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-31
Value0-51000-3000-2000000010000
Percentage of OtherComprehensiveIncomeLossNetOfTax-4.776.23.7-3.4-2.722.3124.260.7-50.3-29.03.3-19.7-16.45.73.8102.17.4-50.5-62.5-28.743.011.1

kmx:UnrecognizedHedgeLosses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-31
Value-16-169-10-13-1000-198-1-13603-50-102
Percentage of OtherComprehensiveIncomeLossNetOfTax104.723.896.3103.4102.777.7-24.239.3150.3129.096.7119.7116.494.396.2-2.192.6150.5162.5128.757.088.9

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value-159-10-13000
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value-15-689-10-13-1300078-1-13603-300-1-110-332171-5-5-2
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value-3-2-2001211000-1-2-2-3-2-2-1-1-2-1-2-2-2-2-2-3-3-3
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value-2-1-10011100000-1-1-1-1-1-1-1-1-1-1-1-1-1-1-20-3
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value00000000000000-1-1-100000000-1-1-1-20
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value-959000.0-469000.0-468000.0-469000.0-468000.0-488000.0-487000.0-487000.0-487000.0-454000.0-454000.0-453000.0-454000.0-386000.0-387000.0-386000.0-387000.0-514000.0-514000.0-540000.0-489000.0-340000.0-340000.0-340000.0-418000.0-429000.0-408000.0-300000.0-300000.0-300000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeStatementLocation

kmx:CarmaxAutoFinance



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-31
Value-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 OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax3.22.82.62.62.62.72.72.52.72.62.62.42.42.32.62.32.3

us-gaap:CostOfSales



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-31
Value-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 OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax38.941.843.442.942.141.242.341.941.341.441.641.340.741.541.341.540.6

us-gaap:SellingGeneralAndAdministrativeExpenses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-31
Value-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 OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax57.955.454.154.655.356.155.055.656.155.955.756.356.856.256.156.257.1

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value-728000.0-364000.0-355000.0-356000.0-355000.0-369000.0-370000.0-370000.0-369000.0-349000.0-277000.0-275000.0-274000.0-224000.0-247000.0-248000.0-249000.0-321000.0-322000.0-339000.0-306000.0-214000.0-213000.0-213000.0-262000.0-270000.0-256000.0-188000.0-189000.0-260000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value-231000.0-105000.0-113000.0-113000.0-113000.0-119000.0-117000.0-117000.0-118000.0-105000.0-177000.0-178000.0-180000.0-162000.0-140000.0-138000.0-138000.0-193000.0-192000.0-201000.0-183000.0-126000.0-127000.0-127000.0-156000.0-159000.0-152000.0-112000.0-111000.0-40000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-31
Value-24-2410-15-17-121201312-3-437-32-11-3-1-4-40-1-7200-3-3
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-312010-11-302010-08-31
Value-18-177-11-13-911097-2-224-11-6-2-1-2-20-1-41006-1-9-6-4-4-5
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value-6-62-4-4-300034-1-112-10-4-10-1-100-2100-916-42
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCostAndExpenseOperating



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value11171415141412131212121111119999877777666655666
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNonoperatingExpense



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312017-11-302017-08-312016-11-302016-08-312015-11-302015-08-312014-11-30
Value1000000000000
Percentage of OtherNonoperatingExpense100.00.00.00.0100.0100.00.00.00.00.0100.0100.00.0

us-gaap:PaymentsOfDebtIssuanceCosts



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-31
Value253734443434243440020
Percentage of PaymentsOfDebtIssuanceCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0

us-gaap:ProceedsFromIssuanceOrSaleOfEquity



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value128953333738964217625128427170112-25
Percentage of ProceedsFromIssuanceOrSaleOfEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-28
Value00000000010000
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value00000000000000000001040
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment0.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.00.0

us-gaap:AwardType

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:StockOption



Period End2020-05-312019-05-312018-05-312017-05-312016-05-31
Value133964
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanAndLeaseLosses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-312010-05-31
Value1225348453842403930383732284641352631301315119-10
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLeaseAndOtherLosses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-312012-11-302012-08-312012-05-312011-11-302011-08-312011-05-31
Value1225349453842404030383732284641352631302513242015191811181291510-1
Percentage of ProvisionForLoanLeaseAndOtherLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:Provisionbreakout

kmx:COVID19impacts



Period End2020-05-31
Value84
Percentage of ProvisionForLoanLeaseAndOtherLosses68.9

kmx:CurrentPeriodOriginations



Period End2020-05-31
Value38
Percentage of ProvisionForLoanLeaseAndOtherLosses31.1

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-31
Value-2-2-10001100000-1-2-2-1-1-1112
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

kmx:UnrecognizedActuarialLosses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-31
Value0000000000000000000000
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax24.718.118.938.38875.0-40.0-31.8-37.0-82.483.133.532.230.914.512.211.612.718.221.419.713.412.7

kmx:UnrecognizedHedgeLosses



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-31
Value-2-1-10011100000-1-1-1-1-1-1111
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax75.381.981.161.7-8775.0140.0131.8137.0182.416.966.567.869.185.587.888.487.381.878.680.386.687.3

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability



Period End2020-05-312019-05-31
Value443
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability



Period End2020-05-312019-05-31
Value221
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value17000.020000.020000.038000.031000.022000.042000.042000.032000.023000.024000.041000.017000.025000.022000.023000.029000.021000.026000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value5000.00.03000.01000.05000.010000.010000.02000.03000.02000.00.02000.00.00.07000.04000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod29.40.013.62.411.931.243.58.37.311.80.09.10.00.033.315.4

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312019-05-312018-05-312017-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value68.9461.0558.4257.110.78000000000000111.460000000000000944.5937.8133.027.55
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312019-05-312018-05-312017-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value90.630.073.6374.760.090.460.00.045.2240.8
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue131.50.0126.0130.90.06195.90.00.0137.0148.1

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-31
Value71.070.0100000000000051160.00.078.610.00.009999999999998010.02000000000000312663.040.00.00.0099999999999980158.3851.630.00.073.7644.9642.6831.7632.69
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.00.00.0100.00.0100.0100.0100.00.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-31
Value93.1198.430.00.100000000000008530.1299999999999954581.860.049999999999997160.450000000000002840.01000000000000511673.5863.97-0.5799999999999983-0.0499999999999971690.4655.3751.9540.3645.58
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue131.0125.20.01000.0650.0129.90.00.0100.0126.0123.90.00.0122.6123.2121.7127.1139.4

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value491000.01000.08000.05000.0491000.02000.02000.010000.0329000.03000.03000.04000.0459000.0428000.07000.06000.0514000.0458000.0552000.0776000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value144000.0148000.02000.01000.02000.092000.04000.05000.02000.0221000.0210000.0-2000.014000.0319000.0281000.0261000.0385000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod29.330.1100.050.020.028.0133.3166.750.048.149.1-28.6233.362.161.447.349.6

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value58.4651.6673.5745.042.760.27000000000000310.199999999999999331.7732.7125.4211.44
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value73.5863.9790.4655.4252.0-0.070000000000000280.49000000000000240.7245.5736.2416.54
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue125.9123.8123.0123.2121.6-25.9245.0128.2139.3142.6144.6

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum



Period End2020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-31
Value0.5610.2950.3140.3270.3390.00.0080000000000000070.310.3270.4680.5140.509
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum



Period End2020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-31
Value0.3610.2730.290.2940.3040.00.00.2770.2520.2810.3240.357
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum



Period End2020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-31
Value0.0050.0240.0290.0210.0160.00.00.0190.0270.0170.020.035
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum



Period End2020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-31
Value0.0010.0230.0170.0070.00180.00.00.00020.00030.00040.0010.001
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate



Period End2020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-312011-05-31
Value0.3830.2930.2910.2980.3080.00.00.3060.3190.4480.4940.493
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue

us-gaap:StockOption



Period End2020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value01943431053102310
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod

us-gaap:StockOption



Period End2020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value11112001212
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:StockOption



Period End2020-05-312019-05-312018-05-312017-05-312016-05-312016-02-292015-11-302015-05-312014-05-312013-05-312012-05-31
Value22.6122.0818.7116.1114.19-0.05999999999999872-0.01000000000000156320.6113.2115.5512.74
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value154000.01000.09000.0142000.00.01000.068000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.00.0100.0100.0

us-gaap:AwardType

us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised

us-gaap:StockOption



Period End2020-05-312019-05-31
Value00
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value0010000
Percentage of StockIssuedDuringPeriodSharesStockOptionsExercised100.00.00.0100.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value-5552000.0-54000.0-38000.0-5149000.0-19000.0-61000.0-2168000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value-5629000.0-55000.0-42000.0-5220000.0-19000.0-62000.0-2202000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation101.4101.9110.5101.4100.0101.6101.6

us-gaap:CommonStock



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value77000.01000.04000.071000.00.01000.034000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation-1.4-1.9-10.5-1.4-0.0-1.6-1.6

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value1953337389
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value1952327388
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised98.999.199.198.998.998.998.8

us-gaap:CommonStock



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value0000000
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised1.10.90.91.11.11.11.2

us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:CommonStock



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value0112323
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value40114128204254171207
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value4101121261622
Percentage of StockRepurchasedAndRetiredDuringPeriodValue10.58.99.310.710.59.511.0

us-gaap:CommonStock



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value0001111
Percentage of StockRepurchasedAndRetiredDuringPeriodValue0.60.60.60.70.70.70.8

us-gaap:RetainedEarnings



Period End2020-05-312019-11-302019-08-312019-05-312018-11-302018-08-312018-05-31
Value36104115181225153182
Percentage of StockRepurchasedAndRetiredDuringPeriodValue88.990.690.188.588.889.888.2

us-gaap:AwardType

us-gaap:TreasuryStockAcquiredAverageCostPerShare

kmx:ShareRepurchaseProgram



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-31
Value78.962.640000000000000690.3884.1369.35-2.140000000000000669.5274.762.690.559999999999995272.0263.7860.01.960000000000000952.5653.1851.39-1.549999999999997258.0364.467.4952.4849.9245.3347.3946.5442.29
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:TreasuryStockSharesAcquired

kmx:ShareRepurchaseProgram



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-31
Value011124323112313222731643012
Percentage of TreasuryStockSharesAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesChargedToCostAndExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-31
Value13241920258161820111617171517181822201517211699
Percentage of ValuationAllowancesAndReservesChargedToCostAndExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesDeductions



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312016-11-302016-08-312016-05-312015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312013-11-302013-08-312013-05-31
Value141918171815171616151616161616161614141212121088
Percentage of ValuationAllowancesAndReservesDeductions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:AccumulatedOtherComprehensiveIncomeLossDeferredTaxes



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292016-02-292015-11-302015-05-312014-05-312013-05-312012-11-302012-08-312012-05-312012-02-29
Value5448262926211616161630353433364040422039273431322524
Percentage of AccumulatedOtherComprehensiveIncomeLossDeferredTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:CancellationReservesCurrentPortion



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292016-02-292015-11-302015-05-312015-02-282014-11-30
Value6263605958555858575657575656575756541147440
Percentage of CancellationReservesCurrentPortion100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

kmx:DeferredTaxAssetsLeasingArrangements



Period End2020-02-292019-02-28
Value1190
Percentage of DeferredTaxAssetsLeasingArrangements100.00.0

kmx:FinanceLeaseAccumulatedDepreciation



Period End2020-05-312020-02-29
Value109
Percentage of FinanceLeaseAccumulatedDepreciation100.0100.0

kmx:FinancingObligations



Period End2020-05-312020-02-292019-02-28
Value535536495
Percentage of FinancingObligations100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesType

kmx:ItemAsPercentOfTotalEndingManagedReceivables

us-gaap:AllowanceForLoanAndLeaseLosses



Period End2020-05-312020-03-012020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-28
Value0.03320.02640.01160.01150.01150.01140.0110.01120.01130.01130.01110.01110.01150.01180.01160.0110.01080.01050.00990.00970.00960.00940.00970.00980.00990.010.00970.010.010.010.010.010.0090.0090.0090.0090.0080.0080.009
Percentage of ItemAsPercentOfTotalEndingManagedReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:ItemAsPercentageOfTotalAssets



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-28
Value0.0360.0140.0130.0150.0220.0210.020.020.0190.0180.0190.0220.0260.0260.0310.0510.0340.0310.030.0370.0550.0040.0170.0310.0460.0550.0610.070.0710.0470.0460.010.0550.0550.0530.0280.008
Percentage of ItemAsPercentageOfTotalAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value0.0360.0140.0130.0150.0220.0210.020.020.0190.0170.0190.0220.0260.0250.030.0510.0330.0310.030.0370.029
Percentage of ItemAsPercentageOfTotalAssets100.0100.0100.0100.0100.0100.0100.0100.0100.094.4100.0100.0100.096.296.8100.097.1100.0100.0100.0725.0

us-gaap:FairValueInputsLevel2



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value0.00.00.00.00.00.00.00.00.00.0010.00.00.00.00.0010.00.00.00.00.00.0
Percentage of ItemAsPercentageOfTotalAssets0.00.00.00.00.00.00.00.00.05.60.00.00.00.03.20.00.00.00.00.00.0

us-gaap:FairValueByFairValueHierarchyLevel

kmx:ItemAsPercentageOfTotalAssetsAtFairValue

us-gaap:FairValueInputsLevel1



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value1.01.00.9861.00.9990.9950.990.9890.9860.9610.9790.9990.9990.9930.9820.9970.9950.9990.9961.00.997
Percentage of ItemAsPercentageOfTotalAssetsAtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueInputsLevel2



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value0.00.00.0140.00.0010.0050.010.0110.0140.0390.0210.0010.0010.0070.0180.0030.0050.0010.0040.00.003
Percentage of ItemAsPercentageOfTotalAssetsAtFairValue0.00.01.40.00.10.51.01.11.44.12.10.10.10.71.80.30.50.10.40.00.3

kmx:ItemAsPercentageOfTotalLiabilities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-28
Value0.0020.0010.0-0.0010.0010.00.00.00.00.00.00.00.00.00.00.00.00.0010.00.00.00.00.00.00.00.00.00.00.00.00.00.0010.0010.00.00.0040.001
Percentage of ItemAsPercentageOfTotalLiabilities100.0100.00.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.00.00.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value0.0020.0010.0-0.0010.0010.00.00.00.00.00.00.00.00.00.00.00.00.0010.00.0-0.000105961151295793
Percentage of ItemAsPercentageOfTotalLiabilities100.0100.00.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.0100.00.00.00.0

kmx:NonRecourseDebtCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-29
Value430424397423417385373397382355348357338333312337319300275296287258241260253223214218207182169171174
Percentage of NonRecourseDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:NonRecourseDebtNonCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-29
Value127221316512899126951245312127119971183111565112661111710925106431038710129990694949227906088568574821279387648737370246755651261605672521149094509
Percentage of NonRecourseDebtNonCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value0.02480.03440.0380.0360.0340.0360.0380.0340.0320.0340.0350.0340.0310.0310.0350.0320.0280.0270.0320.030.0260.0260.0310.0280.0250.0260.0290.0270.0240.026
Percentage of PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablesPeriodPastDue

kmx:GreaterThanNinetyDaysPastDue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value0.00290.00250.0030.0030.0020.0030.0030.0030.0030.0030.0030.0030.0030.0020.0030.0030.0020.0020.0030.002
Percentage of PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables11.77.37.98.35.98.37.98.89.48.88.68.89.76.58.69.47.17.49.47.7

kmx:SixtyOneToNinetyDaysPastDue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value0.00680.01010.0110.0110.010.0110.0110.010.0090.010.010.010.0080.0090.010.0090.0070.0070.0080.006
Percentage of PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables27.429.428.930.629.430.628.929.428.129.428.629.425.829.028.628.125.025.925.023.1

kmx:ThirtyOneToSixtyDaysPastDue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value0.01510.02180.0240.0220.0220.0220.0240.0210.020.0210.0220.0210.020.020.0220.020.0190.0180.0210.018
Percentage of PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables60.963.463.261.164.761.163.261.862.561.862.961.864.564.562.962.567.966.765.669.2

us-gaap:FinancingReceivables1To29DaysPastDue



Period End2020-05-31
Value0.9752
Percentage of PastDueReceivablesAsPercentageOfTotalEndingManagedReceivables3932.3

us-gaap:Range

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVesting

srt:Maximum



Period End2020-05-312020-02-292019-05-312019-02-28
Value210190192172
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVesting100.0100.0100.0100.0

srt:Minimum



Period End2020-05-312020-02-292019-05-312019-02-28
Value78717264
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVesting37.537.537.537.5

us-gaap:Range

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInNextFiscalYear

srt:Maximum



Period End2020-05-312020-02-292019-05-312019-02-28
Value88567150
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInNextFiscalYear100.0100.0100.0100.0

srt:Minimum



Period End2020-05-312020-02-292019-05-312019-02-28
Value33212619
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInNextFiscalYear37.537.537.537.5

us-gaap:Range

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInThreeYears

srt:Maximum



Period End2020-05-312020-02-292019-05-312019-02-28
Value25716363
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInThreeYears100.0100.0100.0100.0

srt:Minimum



Period End2020-05-312020-02-292019-05-312019-02-28
Value9262323
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInThreeYears37.537.537.537.5

us-gaap:Range

kmx:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInTwoYears

srt:Maximum



Period End2020-05-312020-02-292019-05-312019-02-28
Value96625757
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInTwoYears100.0100.0100.0100.0

srt:Minimum



Period End2020-05-312020-02-292019-05-312019-02-28
Value36232121
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExpectedCashPayoutsUponVestingInTwoYears37.537.537.537.5

us-gaap:InternalCreditAssessment

kmx:TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade

kmx:CreditGrade



Period End2020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value0.5080.5010.4980.4970.4980.4960.4940.4920.4930.4920.490.4880.4890.4870.4860.4860.4860.4860.4850.4850.4890.4910.490.4880.4880.4880.4850.4820.479
Percentage of TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:CreditGradeA



Period End2020-05-312020-02-29
Value0.5060.508
Percentage of TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade0.0100.0

kmx:CreditGradeB



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value0.3570.3560.3610.3620.3610.3590.3580.3580.3580.3560.3550.3540.3530.350.350.3520.3530.3540.3560.3590.3610.3610.3630.3660.3680.370.3720.3750.3770.382
Percentage of TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade0.070.172.172.772.672.172.272.572.872.272.272.272.371.671.972.472.672.873.374.074.473.873.974.775.475.876.277.378.279.7

kmx:CreditGradeCAndOther



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value0.1370.1360.1380.140.1420.1430.1460.1480.150.1510.1530.1560.1590.1610.1630.1620.1610.160.1580.1560.1540.150.1460.1440.1440.1420.140.140.1410.139
Percentage of TotalEndingManagedReceivablesAsPercentageByMajorCreditGrade0.026.827.528.128.628.729.430.030.530.631.131.832.632.933.533.333.132.932.532.231.830.729.729.429.529.128.728.929.329.0

kmx:Totalleaseassets



Period End2020-05-312020-02-29
Value519524
Percentage of Totalleaseassets100.0100.0

kmx:Totalleaseliabilities



Period End2020-05-312020-02-29
Value554556
Percentage of Totalleaseliabilities100.0100.0

us-gaap:DebtInstrument

kmx:WarehouseFacilitiesMaximumBorrowingCapacity

kmx:WarehouseFacilities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-05-312012-02-292011-11-302011-09-302011-08-31
Value3500350035003500350035003250314031403140294029002800280028002800250025002500250023002300210018001800180017001700170016001600160016002000
Percentage of WarehouseFacilitiesMaximumBorrowingCapacity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:WarehouseFacilityOne



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-02-28
Value140014001950150140014001300
Percentage of WarehouseFacilitiesMaximumBorrowingCapacity40.040.055.74.340.040.041.4

kmx:WarehouseFacilityThree



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-02-28
Value15015014001950150150140
Percentage of WarehouseFacilitiesMaximumBorrowingCapacity4.34.340.055.74.34.34.5

kmx:WarehouseFacilityTwo



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-02-28
Value195019501501400195019501700
Percentage of WarehouseFacilitiesMaximumBorrowingCapacity55.755.74.340.055.755.754.1

us-gaap:AccruedEmployeeBenefitsCurrent



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-29
Value14215514814012814812010387
Percentage of AccruedEmployeeBenefitsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value29033134030128831628026625227823325120326622424620524521122618425020220515920213814410914711611610812812310710710311094
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-02-28
Value719295260294437393368368334308328365429417487798496454426518747532113795576476887667424654318447546140453
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value719295256294437391364364330296321365428414478795494453424518389
Percentage of AssetsFairValueDisclosure100.0100.098.6100.099.999.599.098.998.696.197.999.999.999.398.299.799.599.999.6100.0725.1

us-gaap:FairValueInputsLevel2



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value0030013341260028220101
Percentage of AssetsFairValueDisclosure0.00.01.40.00.10.51.01.11.43.92.10.10.10.71.80.30.50.10.40.02.2

us-gaap:CashAndCashEquivalentsFairValueDisclosure



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-28
Value697273234272415372345343310276302346410397460778477439410505733432023705496416827597364614278047145840020050
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value697273234272415372345343310276302346410397460778477439410505380
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0878.8

us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption

us-gaap:AccountingStandardsUpdate201613



Period End2020-03-01
Value153
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0

us-gaap:DebtInstrumentFairValue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-29
Value5235465275325134884784864864925075195094990
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DebtLongtermAndShorttermCombinedAmount



Period End2020-05-312020-02-292019-02-28
Value148801540214197
Percentage of DebtLongtermAndShorttermCombinedAmount100.0100.0100.0

us-gaap:DebtInstrument

us-gaap:DebtWeightedAverageInterestRate

us-gaap:LineOfCredit



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-28
Value0.03230.0350.02490.01740.01460.0160.0150.018
Percentage of DebtWeightedAverageInterestRate100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet



Period End2020-05-312020-02-292019-02-28
Value1198961
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0

us-gaap:DeferredTaxAssetsCapitalLossCarryforwards



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value0001111121
Percentage of DeferredTaxAssetsCapitalLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDerivativeInstruments



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-29
Value1000084430
Percentage of DeferredTaxAssetsDerivativeInstruments100.00.00.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsGross



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value310163147237224217186167189169
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsInvestmentInSubsidiaries



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value897163106979571705547
Percentage of DeferredTaxAssetsInvestmentInSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value51484569566360535345
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value39423759605248353333
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-29
Value1817181187763
Percentage of DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDerivatives



Period End2020-02-292019-02-282018-02-282017-02-282013-02-282012-02-292011-02-28
Value0050022
Percentage of DeferredTaxLiabilitiesDerivatives0.0100.0100.00.00.0100.0100.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements



Period End2020-02-292019-02-28
Value1140
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.00.0

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-28
Value191616211917139
Percentage of DeferredTaxLiabilitiesPrepaidExpenses100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-28
Value67594352321430
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesTaxDeferredIncome



Period End2020-02-292019-02-282018-02-28
Value060
Percentage of DeferredTaxLiabilitiesTaxDeferredIncome0.0100.00.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value-142-76-85-89-90-93-6378-67-36
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

kmx:RestorationPlan



Period End2020-02-292019-02-282018-02-282017-02-28
Value-12-11-11-10
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet8.814.413.012.1

us-gaap:PensionPlansDefinedBenefit



Period End2020-02-292019-02-282018-02-282017-02-28
Value-129-65-74-78
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet91.285.687.087.9

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

kmx:RestorationPlan



Period End2020-02-292019-02-282018-02-282017-02-28
Value0.02850.0420.0410.0425
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-02-292019-02-282018-02-282017-02-28
Value0.02850.0420.0410.0425
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanBenefitObligation



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-28
Value310242241229212229187186164127116
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

kmx:RestorationPlan



Period End2020-02-292019-02-282018-02-282017-02-28
Value12111110
Percentage of DefinedBenefitPlanBenefitObligation4.04.64.64.7

us-gaap:PensionPlansDefinedBenefit



Period End2020-02-292019-02-282018-02-282017-02-28
Value298231230218
Percentage of DefinedBenefitPlanBenefitObligation96.095.495.495.3

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear

us-gaap:PensionPlansDefinedBenefit



Period End2020-02-292019-02-282018-02-28
Value0106
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear0.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:PensionPlansDefinedBenefit



Period End2020-02-292019-02-282018-02-28
Value5013
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.00.0100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-28
Value168166156139121135124107969177
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanByPlanAssetCategories

kmx:InvestmentReceivablesNet



Period End2020-02-292019-02-282018-02-282017-02-28
Value0000
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.0-0.1-0.0-0.0

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

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



Period End2020-02-292019-02-282018-02-28
Value202019
Percentage of DefinedBenefitPlanFairValueOfPlanAssets12.112.312.4

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



Period End2020-02-292019-02-282018-02-28
Value0106100
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.064.164.0

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



Period End2020-02-292019-02-282018-02-28
Value03836
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.022.923.4

us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FinancialInstrument

kmx:CollectiveFunds, us-gaap:EquitySecurities



Period End2020-02-292019-02-28
Value1040
Percentage of DefinedBenefitPlanFairValueOfPlanAssets62.10.0

kmx:CollectiveFunds, us-gaap:FixedIncomeSecurities



Period End2020-02-292019-02-28
Value430
Percentage of DefinedBenefitPlanFairValueOfPlanAssets25.60.0

kmx:CollectiveFunds, us-gaap:ShortTermInvestments



Period End2020-02-292019-02-28
Value01
Percentage of DefinedBenefitPlanFairValueOfPlanAssets0.20.7

us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit



Period End2020-02-292019-02-282018-02-282017-02-28
Value168166156139
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value-142-76-85-89-90-93-6378-67-36
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

kmx:RestorationPlan



Period End2020-02-292019-02-282018-02-282017-02-28
Value-12-11-11-10
Percentage of DefinedBenefitPlanFundedStatusOfPlan8.814.413.012.1

us-gaap:PensionPlansDefinedBenefit



Period End2020-02-292019-02-282018-02-282017-02-28
Value-129-65-74-78
Percentage of DefinedBenefitPlanFundedStatusOfPlan91.285.687.087.9

us-gaap:DerivativeAssets



Period End2020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-28
Value0300133412600282201001001100000103
Percentage of DerivativeAssets0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2



Period End2020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value030013341260028220101
Percentage of DerivativeAssets0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilities



Period End2020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value23115136111004300118132-131212000
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2



Period End2020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value23115136111004300118131
Percentage of DerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-100.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:HedgingDesignation

us-gaap:FairValueInputsLevel1, us-gaap:Nondesignated



Period End2020-05-31
Value0
Percentage of DerivativeLiabilities0.0

us-gaap:FairValueInputsLevel2, us-gaap:DesignatedAsHedgingInstrument



Period End2020-05-312020-02-29
Value2523
Percentage of DerivativeLiabilities0.0100.0

us-gaap:FairValueInputsLevel2, us-gaap:Nondesignated



Period End2020-05-31
Value1
Percentage of DerivativeLiabilities0.0

us-gaap:HedgingDesignation

us-gaap:DesignatedAsHedgingInstrument



Period End2020-05-312020-02-29
Value2523
Percentage of DerivativeLiabilities0.0100.0

us-gaap:Nondesignated



Period End2020-05-31
Value1
Percentage of DerivativeLiabilities0.0

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

us-gaap:DerivativeNotionalAmount

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



Period End2020-05-312020-02-292019-11-302019-08-312019-02-28
Value19602620259025302230
Percentage of DerivativeNotionalAmount100.0100.0100.0100.0100.0

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



Period End2020-05-31
Value400
Percentage of DerivativeNotionalAmount20.4

us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:CashFlowHedging, us-gaap:DesignatedAsHedgingInstrument



Period End2020-02-292019-02-28
Value26202230
Percentage of DerivativeNotionalAmount100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized



Period End2020-05-312020-02-292019-05-312019-02-282018-05-312018-02-282017-05-312017-02-282016-11-302016-08-312016-02-292012-08-312012-05-312012-02-292011-11-30
Value875883527949764837454941462827
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

kmx:DeferredStockUnits



Period End2020-05-312020-02-292019-05-312019-02-28
Value0000
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized0.00.00.21.3

kmx:Othersharebasedincentives



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-28
Value1535212323
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized1.49.20.00.03.13.40.00.02.76.1

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-31
Value23122113161821101315171111141619131619221316192114171922
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized27.321.725.825.20.00.026.621.00.00.023.024.023.90.00.00.00.00.00.00.00.00.00.00.00.00.047.048.1

us-gaap:PerformanceShares



Period End2020-05-312020-02-292019-05-312019-02-282018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-292015-11-302015-08-312015-05-31
Value05212223522333
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized1.08.52.92.12.54.90.00.06.94.65.90.00.00.0

us-gaap:RestrictedStock



Period End2020-05-312020-02-292018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-31
Value00001201110000000
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized0.30.70.11.20.00.00.42.13.23.10.20.00.00.00.00.00.0

us-gaap:StockOption



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-05-312017-02-282016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-30
Value6240475359374349553553333439455031384350323743483237
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized71.369.10.00.071.171.30.00.070.872.969.769.470.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FinanceLeaseLiabilityCurrent



Period End2020-05-312020-02-29
Value55
Percentage of FinanceLeaseLiabilityCurrent100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent



Period End2020-05-312020-02-29
Value8279
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset



Period End2020-05-312020-02-29
Value7575
Percentage of FinanceLeaseRightOfUseAsset100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent



Period End2020-05-312020-02-29
Value0.10840.1032
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLosses



Period End2020-05-312020-03-012020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value437359157153150147138138138134128127129129123114109104949087838180777569676560575449464341363438420
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear



Period End2020-05-31
Value392
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear100.0

us-gaap:InternalCreditAssessment

kmx:CreditGradeA



Period End2020-05-31
Value139
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear35.6

kmx:CreditGradeB



Period End2020-05-31
Value160
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear41.0

kmx:CreditGradeCAndOther



Period End2020-05-31
Value92
Percentage of FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear23.4

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear



Period End2020-05-31
Value991
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear100.0

us-gaap:InternalCreditAssessment

kmx:CreditGradeA



Period End2020-05-31
Value450
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear45.4

kmx:CreditGradeB



Period End2020-05-31
Value367
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear37.0

kmx:CreditGradeCAndOther



Period End2020-05-31
Value174
Percentage of FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear17.6

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear



Period End2020-05-31
Value957
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear100.0

us-gaap:InternalCreditAssessment

kmx:CreditGradeA



Period End2020-05-31
Value493
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear51.6

kmx:CreditGradeB



Period End2020-05-31
Value334
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear34.9

kmx:CreditGradeCAndOther



Period End2020-05-31
Value129
Percentage of FinancingReceivableOriginatedInCurrentFiscalYear13.5

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear



Period End2020-05-31
Value5527
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear100.0

us-gaap:InternalCreditAssessment

kmx:CreditGradeA



Period End2020-05-31
Value2928
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear53.0

kmx:CreditGradeB



Period End2020-05-31
Value1891
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear34.2

kmx:CreditGradeCAndOther



Period End2020-05-31
Value706
Percentage of FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear12.8

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear



Period End2020-05-31
Value1960
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear100.0

us-gaap:InternalCreditAssessment

kmx:CreditGradeA



Period End2020-05-31
Value957
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear48.8

kmx:CreditGradeB



Period End2020-05-31
Value731
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear37.3

kmx:CreditGradeCAndOther



Period End2020-05-31
Value271
Percentage of FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear13.9

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear



Period End2020-05-31
Value3342
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear100.0

us-gaap:InternalCreditAssessment

kmx:CreditGradeA



Period End2020-05-31
Value1689
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear50.5

kmx:CreditGradeB



Period End2020-05-31
Value1214
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear36.3

kmx:CreditGradeCAndOther



Period End2020-05-31
Value438
Percentage of FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear13.1

us-gaap:FinancingReceivableRecordedInvestmentPastDue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-282010-02-28
Value326468510466431451466419376393405385338331359330281262303274234221251220190185201178154154164145116142133121133
Percentage of FinancingReceivableRecordedInvestmentPastDue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablesPeriodPastDue

kmx:GreaterThanNinetyDaysPastDue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value3834353331333431272930302726292721222416
Percentage of FinancingReceivableRecordedInvestmentPastDue11.67.37.07.27.27.57.37.67.27.67.57.98.08.08.18.27.58.67.97.6

kmx:SixtyOneToNinetyDaysPastDue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value9013815214012414113412411011611611591931019571697852
Percentage of FinancingReceivableRecordedInvestmentPastDue27.629.529.830.228.731.328.829.729.329.728.729.927.128.228.328.925.526.325.923.7

kmx:ThirtyOneToSixtyDaysPastDue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-02-28
Value198296323292276276298262239246258239219211228207188171201152
Percentage of FinancingReceivableRecordedInvestmentPastDue60.863.263.262.664.161.263.862.763.562.763.862.264.963.763.662.967.065.166.268.7

us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment

kmx:GreaterThanNinetyDaysPastDue, kmx:CreditGradeA



Period End2020-05-31
Value3
Percentage of FinancingReceivableRecordedInvestmentPastDue1.1

kmx:GreaterThanNinetyDaysPastDue, kmx:CreditGradeB



Period End2020-05-31
Value17
Percentage of FinancingReceivableRecordedInvestmentPastDue5.3

kmx:GreaterThanNinetyDaysPastDue, kmx:CreditGradeCAndOther



Period End2020-05-31
Value17
Percentage of FinancingReceivableRecordedInvestmentPastDue5.2

kmx:SixtyOneToNinetyDaysPastDue, kmx:CreditGradeA



Period End2020-05-31
Value7
Percentage of FinancingReceivableRecordedInvestmentPastDue2.1

kmx:SixtyOneToNinetyDaysPastDue, kmx:CreditGradeB



Period End2020-05-31
Value38
Percentage of FinancingReceivableRecordedInvestmentPastDue11.9

kmx:SixtyOneToNinetyDaysPastDue, kmx:CreditGradeCAndOther



Period End2020-05-31
Value44
Percentage of FinancingReceivableRecordedInvestmentPastDue13.6

kmx:ThirtyOneToSixtyDaysPastDue, kmx:CreditGradeA



Period End2020-05-31
Value16
Percentage of FinancingReceivableRecordedInvestmentPastDue5.0

kmx:ThirtyOneToSixtyDaysPastDue, kmx:CreditGradeB



Period End2020-05-31
Value89
Percentage of FinancingReceivableRecordedInvestmentPastDue27.3

kmx:ThirtyOneToSixtyDaysPastDue, kmx:CreditGradeCAndOther



Period End2020-05-31
Value92
Percentage of FinancingReceivableRecordedInvestmentPastDue28.4

us-gaap:InternalCreditAssessment

kmx:CreditGradeA



Period End2020-05-31
Value27
Percentage of FinancingReceivableRecordedInvestmentPastDue8.3

kmx:CreditGradeB



Period End2020-05-31
Value145
Percentage of FinancingReceivableRecordedInvestmentPastDue44.5

kmx:CreditGradeCAndOther



Period End2020-05-31
Value154
Percentage of FinancingReceivableRecordedInvestmentPastDue47.2

us-gaap:InterestReceivable



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value645659595649525150434746453841414035373635313231312629282724252523242420
Percentage of InterestReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentsAndOtherNoncurrentAssets



Period End2020-02-292019-02-282018-02-282017-02-28
Value156838070
Percentage of InvestmentsAndOtherNoncurrentAssets100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-02-28
Value2723115136111004300118132-131212000144213
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value2723115136111004300118131
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-100.0

us-gaap:DebtInstrument

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

us-gaap:LineOfCredit



Period End2020-02-29
Value997
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent



Period End2020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-02-29
Value433406435432398384411393365358366349343324351333315290320309290265282274242233237224199189
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonRecourseDebt



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-29
Value1317013610133201314012893125351239212252119691164411490113001100010740104601026098349527934091508860847081807910763072506970673063705860538050804680
Percentage of NonRecourseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

kmx:TermSecuritizationsDebt



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value11220114301101010880107101066010400101509940981096109240898091208790857083608130794079107770748072206860666063706160578054305060
Percentage of NonRecourseDebt85.284.082.782.883.185.083.982.883.084.283.681.881.684.984.083.585.085.385.086.487.788.388.386.787.387.988.485.985.286.3

kmx:WarehouseFacilities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-31
Value19502180231022602180188019902110203018301880206020201620168017001470140013901240109098695910409648798079479417928761070
Percentage of NonRecourseDebt14.816.017.317.216.915.016.117.217.015.716.418.218.415.116.116.614.914.714.913.612.311.611.713.112.612.111.614.114.813.516.321.1

us-gaap:NotesAndLoansReceivableGrossCurrent



Period End2020-05-31
Value12845
Percentage of NotesAndLoansReceivableGrossCurrent100.0

us-gaap:InternalCreditAssessment

kmx:CreditGradeA



Period End2020-05-31
Value6632
Percentage of NotesAndLoansReceivableGrossCurrent51.6

kmx:CreditGradeB



Period End2020-05-31
Value4554
Percentage of NotesAndLoansReceivableGrossCurrent35.5

kmx:CreditGradeCAndOther



Period End2020-05-31
Value1658
Percentage of NotesAndLoansReceivableGrossCurrent12.9

us-gaap:NotesReceivableGross



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value1317113617133521313112859125101237712214119251161811455112521098310681104071019799149593937191648862845881867891757371846919668363345933558353424981482347074334
Percentage of NotesReceivableGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

kmx:ExcessCollateral



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-29
Value291289296295291273277284277269263241233211162
Percentage of NotesReceivableGross2.22.12.22.22.32.22.22.32.32.32.32.12.12.01.7

kmx:OtherReceivables



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value13514013311891868075606053648561257270399366311307287246247242200159163170174151232246217250283198
Percentage of NotesReceivableGross1.01.01.00.90.70.70.60.60.50.50.50.60.80.62.52.74.03.83.33.43.22.93.03.12.72.22.42.62.82.64.24.64.45.26.04.6

kmx:TermSecuritizations



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value1079511007106161045210298102731002697489559945592568885864287848473822980427828766976137485722669796603640961455948556552194989447540294211369728653193
Percentage of NotesReceivableGross82.080.879.579.680.182.181.079.880.281.480.879.078.782.281.480.781.181.681.883.184.585.485.383.784.685.586.083.382.484.180.275.484.576.660.973.7

kmx:WarehouseFacilitiesReceivables



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value194921812305226521781877199321062028183418822061202216241677169714721399139112431089986959104596487980794794179287610665538761559943
Percentage of NotesReceivableGross14.816.017.317.216.915.016.117.217.015.816.418.318.415.216.116.614.814.614.813.612.311.711.713.212.712.211.714.214.913.315.720.011.118.233.121.8

us-gaap:InternalCreditAssessment

kmx:CreditGrade



Period End2020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value69156691653363856225614260315871572556305513536252235068495848134666455344474301413540203867369835063373323930552841
Percentage of NotesReceivableGross50.850.149.849.749.849.649.449.249.349.149.048.848.948.748.648.548.648.648.548.548.949.149.048.848.848.848.548.247.9

kmx:CreditGradeA



Period End2020-05-312020-02-29
Value66596915
Percentage of NotesReceivableGross50.650.8

kmx:CreditGradeB



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value469948414813475346414488443243764267413340693986387837393643358535023400334032913201305529692884278626582574250423872265
Percentage of NotesReceivableGross35.735.636.136.236.135.935.835.835.835.635.535.435.335.035.035.235.335.435.635.936.136.136.336.636.837.037.237.537.738.2

kmx:CreditGradeCAndOther



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value18121860184718441833179618021806178617601756175317421718169516541598152614771425135912671196113810881019970939892826
Percentage of NotesReceivableGross13.813.713.814.014.314.414.614.815.015.115.315.615.916.116.316.216.115.915.815.615.315.014.614.414.414.214.014.114.113.9

us-gaap:NotesReceivableNet



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-28
Value127941355113276130651277712428122991214011842115351137611172108921059610333101319853953693189116881284358138784475477147689266656310589555525315515449814807469944904334
Percentage of NotesReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLiabilityCurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-28
Value30303030290
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.00.0

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-28
Value4354404464484580
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.00.0

us-gaap:OtherLongTermDebtNoncurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-02-28
Value16931778170416891573116399284079899510428157979528887975977158643003003003000
Percentage of OtherLongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:OtherReceivables



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-02-292011-11-302011-08-312011-02-28
Value-4351725868121212-60-112303-1270018712208-5-2-3-1124
Percentage of OtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-28
Value615000.0500000.0485000.0467000.0459000.0462000.0451000.0453000.0409000.0381000.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

kmx:RestorationPlan



Period End2020-02-292019-02-282018-02-282017-02-28
Value615000.0500000.0485000.0467000.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0100.0100.0100.0

us-gaap:ReceivablesLongTermContractsOrPrograms



Period End2020-05-312020-02-292019-11-302019-08-312019-02-28
Value00323225
Percentage of ReceivablesLongTermContractsOrPrograms0.00.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-02-29
Value480481458483479440426447431399388404385380357380364343316335328294275297290259246251240224204
Percentage of RestrictedCashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-02-28
Value12211711411311110710711411356565555525051494645464442373735323431344136403945414245
Percentage of RestrictedCashAndCashEquivalentsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

kmx:TermSecuritizationsDebt



Period End2020-02-292019-02-282018-02-28
Value676156
Percentage of RestrictedCashAndCashEquivalentsNoncurrent57.956.7100.0

us-gaap:SeniorNotes



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-02-29
Value5005005005005005005005005005005005005005000
Percentage of SeniorNotes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-29
Value11111111111111111111111111111111
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:DeferredStockUnits



Period End2020-05-312020-02-292019-05-312019-02-28
Value0000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber2.32.51.51.5

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-29
Value000000000000000000000000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber30.430.629.631.631.530.730.028.729.028.828.335.833.641.139.840.139.850.651.350.850.055.655.254.053.854.854.152.551.749.6

us-gaap:PerformanceShares



Period End2020-05-312020-02-292019-05-312019-02-282018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-05-312016-02-292015-11-302015-08-312015-05-312015-02-28
Value0000000000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber1.28.37.88.69.115.315.014.714.310.610.05.04.94.84.70.0

us-gaap:RestrictedStock



Period End2020-05-312020-02-292019-05-312019-02-282018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-05-312014-02-282013-11-302013-08-312013-02-282012-11-302012-08-312012-02-29
Value00000000000000000000000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber0.30.30.00.02.13.33.33.43.13.60.00.02.51.31.31.41.61.50.00.00.00.00.00.00.00.0

us-gaap:AwardType, us-gaap:PlanName

us-gaap:PerformanceShares, kmx:Fiscal2020GrantsPerformanceTargetNotSet



Period End2020-05-31
Value0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber2.5

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

kmx:CashSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-29
Value70.8666.8566.8566.8666.8658.058.0158.0158.0159.3659.3559.3459.3355.0555.0552.752.7152.7252.7239.8139.8239.8239.8235.6835.6835.6835.6729.929.9129.929.921.76
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmx:DeferredStockUnits



Period End2020-05-312020-02-292019-05-312019-02-28
Value80.1980.1972.5872.58
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue113.2120.0108.6125.1

kmx:StockSettledRestrictedStockUnits



Period End2020-05-312020-02-292019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-29
Value90.2484.0583.8374.3674.3174.2574.1974.0474.0373.7273.7265.7465.6560.960.8960.7760.5448.348.2548.1848.1945.2645.2645.2445.1240.7840.7841.041.031.12
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue127.3125.7125.4128.2128.1128.0127.9124.7124.7124.2124.3119.4119.3115.6115.5115.3114.8121.3121.2121.0121.0126.8126.8126.8126.5136.4136.3137.1137.1143.0

us-gaap:PerformanceShares



Period End2020-05-312020-02-292019-05-312019-02-282018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-05-312016-02-292015-11-302015-08-312015-05-312015-02-28
Value78.6168.3268.3254.854.860.160.160.160.160.9460.9472.5872.5872.5872.580.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue110.9102.2102.294.594.5101.2101.3101.3101.3110.7110.7137.7137.7137.7137.70.0

us-gaap:RestrictedStock



Period End2020-05-312020-02-292018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value88.5488.5456.6258.0558.1858.0650.9350.9450.6550.5759.2668.1668.1668.1651.18
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue125.0132.497.697.898.097.885.892.50.00.0107.6129.3129.3129.3128.6

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

us-gaap:StockCompensationPlan



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-28
Value5955555550505050
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermBankLoansAndNotesPayable



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-282012-11-302012-08-312012-05-312012-02-292011-11-302011-08-312011-05-312011-02-282010-11-302010-02-28
Value0000010300000000100200221011000100011100
Percentage of ShortTermBankLoansAndNotesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StandardProductWarrantyAccrual



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-02-282013-02-282012-02-292011-02-28
Value14108108767665666565645565443
Percentage of StandardProductWarrantyAccrual100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

kmx:ShareRepurchaseProgram



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-02-28
Value1510155016701780191021132380638810102011401251141015901691189012661398155319992249236925799071107282588
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TradingSecurities



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value222221212119192020191918171617171613131313998855554
Percentage of TradingSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-02-28
Value22222121211919202019191817161717161313139
Percentage of TradingSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnamortizedDebtIssuanceExpense



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-29
Value24252424232424242324232322232323-23-21
Percentage of UnamortizedDebtIssuanceExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-28
Value43222111103
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-292011-02-282010-02-28
Value9109910975331
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesBalance



Period End2020-05-312020-02-292019-11-302019-08-312019-05-312019-02-282018-11-302018-08-312018-05-312018-02-282017-11-302017-08-312017-05-312017-02-282016-11-302016-08-312016-05-312016-02-292015-11-302015-08-312015-05-312015-02-282014-11-302014-08-312014-05-312014-02-282013-11-302013-08-312013-05-312013-02-28
Value116117112111109102109110108105109109109108112113112110109108100948886817240343332
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WorkersCompensationLiabilityCurrent



Period End2020-02-292019-02-282018-02-282017-02-282016-02-292015-02-282014-02-282013-02-282012-02-29
Value413736353936292623
Percentage of WorkersCompensationLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService


us-gaap:Revenues us-gaap:ConcentrationRiskByBenchmark


us-gaap:CostOfRevenue us-gaap:ConcentrationRiskByBenchmark


us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType


us-gaap:LongTermDebt us-gaap:LongtermDebtType


us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType


us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents


us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents