MPC


Line plots across dimensions of each concept
Tables

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

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

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax

us-gaap:Revenues

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostsAndExpenses

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestAndDebtExpense

us-gaap:InterestExpenseDebt

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit
us-gaap:Restatement, us-gaap:BusinessAcquisition

us-gaap:IncomeTaxesPaidNet

us-gaap:ProfitLoss

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:AccountsReceivableNetCurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:InventoryNet
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:OtherAssetsCurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:Goodwill
us-gaap:ConsolidatedEntities, dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:OtherAssetsNoncurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:LiabilitiesCurrent

us-gaap:DebtCurrent

us-gaap:AccountsPayableCurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:AccruedIncomeTaxesCurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:OtherLiabilitiesCurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:MinorityInterest

us-gaap:StockholdersEquity

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:TreasuryStockValue

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss

us-gaap:DepreciationDepletionAndAmortization
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

mpc:CapitalExpenditure
us-gaap:ConsolidationItems
mpc:CapitalExpendituresAndInvestments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems
mpc:CapitalExpendituresExcludingCapitalizedInterest

mpc:ComprehensiveIncomeLossNetofTaxAttributabletoNonredeemableNoncontrollingInterest

mpc:ComprehensiveIncomeLossNetofTaxAttributabletoRedeemableNoncontrollingInterest

mpc:Contributionofnetassets
us-gaap:StatementEquityComponents
mpc:Deferredincometaximpactfromchangesinequity
us-gaap:Energy, us-gaap:TransactionType
mpc:DerivativeInstrumentsPercentageOfDerivativeContractsExpiration1
us-gaap:ConsolidationItems
mpc:GainonExchangeofUndividedJointInterestforEquityOwnership

mpc:ImpactofSubsidiaryEquityTransactions
us-gaap:StatementEquityComponents

mpc:ImpairmentCharges
us-gaap:ConsolidationItems

mpc:IncreaseDecreaseInAccrualForCapitalExpenditures

mpc:NumberofRefineries

mpc:OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetPriorServiceCostCreditAdjustmentNetofTax

mpc:OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetPriorServiceCostCreditAdjustmentTax

mpc:OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetUnamortizedGainLossAdjustmentNetofTax

mpc:OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetUnamortizedGainLossAdjustmentTax

mpc:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWorkersCompensation
us-gaap:StatementEquityComponents

mpc:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForSettlementGainLossBeforeTax
us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

mpc:OtherComprehensiveIncomeOtherTax

mpc:PensionandOtherPostretirementBenefitNet

mpc:RevenuesAndOtherIncome

us-gaap:AmortizationOfFinancingCosts
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AssetImpairmentCharges
us-gaap:ConsolidationItems
us-gaap:BusinessCombinationAcquisitionRelatedCosts

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:StatementEquityComponents
us-gaap:ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesIssuanceOfEquityBySubsidiaryToNoncontrollingInterests

us-gaap:CostsAndExpensesRelatedParty

us-gaap:DeferredIncomeTaxExpenseBenefit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligationBenefitsPaid
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeGainLossOnDerivativeNet
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationDeductionsOther

us-gaap:EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense

us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments

us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes

us-gaap:EquityMethodInvestmentDividendsOrDistributions
us-gaap:ConsolidatedEntities, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment
us-gaap:IncomeStatementLocation

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationRevenue
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements

us-gaap:FairValueOfAssetsAcquired

us-gaap:GainLossOnDispositionOfAssets

us-gaap:GoodwillImpairmentLoss
us-gaap:IncomeStatementLocation
us-gaap:StatementBusinessSegments

us-gaap:GoodwillTransfers
us-gaap:StatementBusinessSegments
us-gaap:ConsolidatedEntities, us-gaap:StatementBusinessSegments
us-gaap:ImpairmentOfLongLivedAssetsHeldForUse
us-gaap:IncomeStatementLocation
us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable

us-gaap:InterestCostsCapitalizedAdjustment

us-gaap:InterestExpenseOther
us-gaap:ConsolidationItems
us-gaap:InterestPaidCapitalized

us-gaap:InterestPaidNet

us-gaap:InventoryLIFOReservePeriodCharge
us-gaap:ConsolidationItems

us-gaap:InvestmentIncomeInterest

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAttributableToNonredeemableNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax
us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax
us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeOtherNetOfTax

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherOperatingIncome

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDividendsCommonStock
us-gaap:ConsolidationItems
us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PaymentsToFundLongtermLoansToRelatedParties

us-gaap:PaymentsToMinorityShareholders

us-gaap:ProceedsFromCollectionOfLongtermLoansToRelatedParties

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet
us-gaap:DebtInstrument
us-gaap:ProceedsFromLongTermLinesOfCredit
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:ProceedsFromMinorityShareholders

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities
us-gaap:DebtInstrument
us-gaap:RepaymentsOfLongTermLinesOfCredit
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:RevenueFromRelatedParties
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensationForfeited

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueShareBasedCompensationForfeited
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueShareBasedCompensationGross

us-gaap:StockholdersEquityOther
us-gaap:StatementEquityComponents

us-gaap:TaxesExcludingIncomeAndExciseTaxes

us-gaap:TemporaryEquityOtherChanges

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockSharesAcquired

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted

us-gaap:UnrealizedGainLossOnDerivatives

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

mpc:EnergyRelatedInventoryRefinedProducts
us-gaap:Range, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
mpc:FairValueInputsForwardCommodityPrice

mpc:InventorybeforeValuationReserve

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:CrudeOilAndNaturalGasLiquids

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet
us-gaap:DebtInstrument
us-gaap:DebtWeightedAverageInterestRate

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:DeferredFinanceCostsNet

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:ConsolidatedEntities, dei:LegalEntity
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetFairValueGrossLiability
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeCollateralObligationToReturnCash
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral

us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset
us-gaap:Energy, us-gaap:DerivativeInstrumentRisk, us-gaap:Position, us-gaap:TransactionType
us-gaap:DerivativeNonmonetaryNotionalAmount
us-gaap:Energy, us-gaap:Position, us-gaap:TransactionType

us-gaap:EmployeeRelatedLiabilitiesCurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, mpc:OwnershipType
us-gaap:EquityMethodInvestmentOwnershipPercentage

us-gaap:EquityMethodInvestments
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
us-gaap:ConsolidatedEntities, us-gaap:LongtermDebtType
us-gaap:FinanceLeaseLiability
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsMaximumExposure
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:FinancialSupportToNonconsolidatedLegalEntity, us-gaap:GuaranteeObligationsByNature

us-gaap:InventoryValuationReserves
us-gaap:DebtInstrument
us-gaap:LettersOfCreditOutstandingAmount
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:LineOfCredit
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:SubsequentEventType

us-gaap:LongTermDebtAndCapitalLeaseObligations
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity
us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtFairValue
us-gaap:ConsolidatedEntities
us-gaap:NotesPayable

us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:OperatingLeaseLiabilityNoncurrent
us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:OtherInventorySupplies

us-gaap:RecordedThirdPartyEnvironmentalRecoveriesReceivable

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount

us-gaap:RestrictedCashCurrent

us-gaap:RetailRelatedInventoryMerchandise

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockShares
us-gaap:StatementEquityComponents

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ██████▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁101010101010777777777777774444444444444444NANANANANA
us-gaap:CommonStockSharesIssued ██████▅▅▅▅▅▅▅▅▅▅▅▅▅▅▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁979978978978976975735735734734733732731731731730730729729728364363363363363362362362361361359358358357357356NANANANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock██████▅▅▅▅▅▅▅▅▅▅▅▅▅▅▁▁▁▅▁▁▁▁▁▁979978978978976975735735734734733732731731731730730729729728364363363726363362362362361361NA358358357NANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 648NA660666673NA456464480NA508517530NA530531531NA538544275NA284289295NA311324333NA340341350NA357358358NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 648NA656662673NA451459476NA504513525NA527528529NA535541273NA282287293NA309322331NA338340348NA356356356NANANANA
us-gaap:EarningsPerShareBasic ▁▇▇▇▆▇▇▇▆█▇▇▆▇▇▇▆▇▇▇██▇█▇▇▇▇▇▇█▇▇▆█▇▇▇▇▇▆-14.250.681.671.67-0.011.381.632.30.084.131.790.940.060.430.281.510.0030.351.771.523.262.882.382.970.682.090.541.842.192.263.612.391.71-0.213.182.251.490.640.781.14-0.81
us-gaap:EarningsPerShareDiluted ▁▇▇▇▆▇▇▇▆█▇▇▆▇▇▇▆▇▇▇██▇█▇▇▇▇▇▇█▇▇▆█▇▇▇▇▇▆-14.250.681.661.66-0.011.351.622.270.084.091.770.930.060.430.271.510.0030.351.761.513.242.862.362.950.672.070.541.832.172.243.592.381.7-0.213.162.241.480.640.771.13-0.81
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▅▇▇█▆█▄▄▃▄▃▃▂▂▂▂▁▂▃▄▂▄▅▆▅▅▆▅▅▄▄▄▄▃▄▄▃▃▂▂▁2521531092310433354728081323332278722118186942105519210181801628817155166181681112755156071871620537171912225025438268442328524897262562567723330206862104820242202651942020616207601784217433158971579513362
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems us-gaap:IntersegmentElimination▅▇▇█▆▇▂▂▁486159186337670256635942371936353011NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems us-gaap:OperatingSegments▄▇▇█▆▇▃▃▁300763701037380402493393038275267072595221877NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:IntersegmentElimination,mpc:RefiningAndMarketing▄▆▇█▆▆▂▂▁361746755100548244294733293128712379NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:RefiningAndMarketing▄▇▇█▅▇▃▃▁211452668826537291542436327783196821917315961NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:RetailSegment▅▇██▅▇▂▂▁677180648679894673788317539652674572NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService mpc:RefinedProducts▄▇▇█▅▇▃▃▁219972789727462296682465328623198151929216158NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments mpc:RefinedProducts,mpc:RefiningAndMarketing▁█▇165392120620330NA187502242315636NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService,us-gaap:StatementBusinessSegments mpc:RefinedProducts,mpc:RetailSegment▁▆█528964756956NA594768174051NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments mpc:RefiningAndMarketing▄▇▆█▅▇▃▃▁175282201321437236721975122870165521610513412NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments mpc:ReportableSegment▄▇▇█▅▇▃▃▁252153109231043335472808132151227872211818694NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments mpc:RetailSegment▅▇██▅▇▂▂▁676980628677894473738307539552654569NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax ▅▇▇█▆█▄▄▃▄▃▃▂▂▂▂▁▂▃▄▂▄▅▆▅▅▆▅▅▄▄▄▄▃▄▄▃▃▂▂▁2521531092310433354728267323332298822317188662105519053180331628817155166181681112755156071871620537171912225025438268442328524897262562567723330206862104820242202651942020616207601784217433158971579513362
us-gaap:Revenues ▅▇▇█▆█▄▄▃▄▃▃▂▂▂▂▁▂▃▄▂▄▅▆▅▅▆▅▅▄▄▄▄▃▄▄▃▃▂▂▁2521531092310433354728267323332298822317188662105519210181801628817155166181681112755156071871620537171912225025438268442328524897262562567723330206862104820242202651942020616207601784217433158971579513362
us-gaap:CostOfGoodsAndServicesSold ▄▇▇█▆▇▃▃▂▂▁▁228212730127300296822575628112204571951717370188551661716101NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses █▆▆▇▆▆▄▃▃▃▃▂▂▂▂▂▁▂▂▃▂▄▅▅▄35897304672917831646279463052421729207341854420117178101737216101167311602515475127551534117209192461577021084244192556422984NA25973247432218919522193541895019319NA188941946917052NA1548515189NA
us-gaap:SellingGeneralAndAdministrativeExpense ▅▅▅▆▆█▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁8217908339048811147445424402457412485389406420401378433392393358371342316346NA305358249279305376263NA299288217NA226228NA
us-gaap:OperatingIncomeLoss ▁▇██▇███▇██▇▇▇▇█▇▇██████▇▇▇▇████▇-118178412024204266920171403171144011191576982292553435131575338154913351470125910621369361100830196011561189181914821035NA18521394886NA496721NA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems us-gaap:CorporateNonSegment▁▁▃▃▃▂▆▇▇▆▇▇▇▇███▇▇▇▇▇▇██▇███-227-237-198-179-191-219-103-91-88-114-86-83-82-76-67-67-67-75-77-76-80-82-76-61-67-81-59-64-67NANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems us-gaap:OperatingSegments▃█▇█▃█▅▆▂▄▆▄▁▂▃▅▁▁▆▅▅▄▄▅▂8022278224422777442425150618015291224166111333746297731474272413177214121551134711591435492NA38310841223NA18191482NANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:Midstream██████▆▆▅▄▄▄▃▃▃▃▂▁▂▂▂90588991987890888967961756734335533230924525820116739310390NANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:RefiningAndMarketing▁▆▆▆▂▆▅▇▃▆▇▅▃▄▄▇▃▄█▇█▇▆▇▄-622912883906-3349236661025-1337321097562-702193061080-6220714571206131610169711260362NA2279031105NA16911325NANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:RetailSegment▇▆▆▆▂█▂▂▁51947744249317061316115995NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestAndDebtExpense ▇▆▇▇▆█▅▄▄▃▃▃▃▃▃▃▃▂▁▁▂▂▁▁▁33830231732230638524019518316015715815013614113714210370648172504846NANA4548NANA1722NANANANANANANANA
us-gaap:InterestExpenseDebt ██████▅▅▅▄▄▄▄▃▃▃▃▂▂▁▂▂▁▁▁▁▁▁▁▁▁3573543523503403512332292131801721731631471531491539977698075564949485049484949NA46NA45NA31NA5NANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▁▇██▇███▇███▇▇▇█▇▇██████▇-121555391707172036316321163151625795914198241424172941178-67235147912711389118710121321315NA2549151108114418701290934NA17441333822NA439640NA
us-gaap:IncomeTaxExpenseBenefit ▁▇▇█▇█▇▇▇▃█▇▇▇▇█▇▇████▇█▇-193727734035310443722228122-116641525041128753951167521432486382333457108NA81316378385646476338NA611531293NA162235NA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:Restatement,us-gaap:BusinessAcquisition srt:RestatementAdjustment,mpc:Andeavor36NA0036NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxesPaidNet ▂▃▂▄▂▄▃▂▂▆▃▃▂▃▃▂▁▄▄█▃▅▇▄▂-9115143204227111334652118519441129759-1283192478791603936702945NANA724-543539236519NANANANANANANANA
us-gaap:ProfitLoss ▁▇██▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇-10218262136713672591195941123523521251004574101289219783-781689588399038056798642076311735997307591224814596-751133802529NANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▁▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇-924033510441096-149758021055352024900484273201397981181945830891713662842198NA21772180778012321179613NA1128828541NA270481NA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▁▇██▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇-10224154131613572521219100612352332133100157598382213780-78162955843903720669851206NA222727812NA12321179613NANANANANANANANA
us-gaap:NetIncomeLoss ▁▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇-923444310951106-795173710553720169034833022714580111879488268917986728551996261685937257551224814596-751133802529230277405-289
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▁▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇-923444310951106-79517371054372015903483302271458001186947825890797671854199NA1685927247541222812NANA1131802NANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▁▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇-923444310951106-79517371054372015903483302271458001186947825890797671854199NA1685927247541222812NANA1131802NANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ▇████▇▄▄▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▂▂▁▁▁▁▁▁▁863179855698139968969643692940530315173650364490474680645447458214441343293441334175843115301613065330182304603170529376291592838529003296953077327223265832468125306257452522523964NA23232NANANA
us-gaap:Liabilities █████▇▄▄▄▃▃▃▃▃▂▃▂▃▁▂▂▂▂▂▂▁▂▂▂▁▁▁▁▁▁▁541215544954515528305257447887329973191530501272192600424883250242321022336232052226423440172361836318202190702043918339184011705317739174981836115118151161435516090162401517614987NA14988NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▇████▇▄▄▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▂▂▁▁▁▁▁▁▁863179855698139968969643692940530315173650364490474680645447458214441343293441334175843115301613065330182304603170529376291592838529003296953077327223265832468125306257452522523964NA23232NANANA
us-gaap:StockholdersEquity ▅█████▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁2408833694337383420733951351751516614958149881403312930126361307013557133951349012902132371227711643113381075110849106201034410920108511178412000116941146710326921695051004989779036824484858693NA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent ▅█▇▇▇▇▆▅▅▄▃▂▃▂▂▂▁▂▃▃▃▃▄▄▄▄▄▅▅▄▄▃▃▃▃▂156932017019139183961815118023158731554814525134011163110443110421040195451030480979471108611143111053113391288713596134481273713531142521529713029125161070611580120011166910513NA10056NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▃▃▃▃▂▃███▅▄▃▄▂▂▃▁▂▄▄▄▃▃▄▄▄▄▅██▆▄▄▅▅▃▁▁▁▁16901527152512478771687499249994653301120881450216788770917543081127204418812078149418542125216622922018306947374860338718952205307929571622219118117154NA
us-gaap:AccountsReceivableNetCurrent ▅█▇█▇▅▅▄▄▄▃▂▂▂▂▂▁▁▂▃▂▃▅▅▅▅▅▆▅▄▄▄▅▅▄▄558378727461760368935853540849194613469539003259328436173136319926022927312438763364405852715725542055595593616355094610510147085867545949135041NA4393NANANA
us-gaap:InventoryNet ▅█▇▇██▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▃▃▃▁▂▂▁▁▁▁7445102439696908898339837533954855111555054935548539256565524520949835225555655405437564256085621568946895714483048793449388940303352332036153679NA3071NANANA
us-gaap:OtherAssetsCurrent █▅▄▄▅▅▁▂▂▂▂▂▂▂▂▂▂▂▁▁▂▂▂▁▂▂▂▂▂▁▂▁▂▂▂▂97552845745854864613414514814515018619924117614220419213713417414515412517319720619017211013973156141183170NA65NANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentGross ████▇▇▅▅▄▄▄▄▄▄▄▄▄▄▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁654706462363290629026188261213432764198541176405383971839002384063800637526368773621535604263612600725621253022471222277219872179321375211062089019409190511868918309180731766017366NA16624NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:Midstream████▇▇▄▄▄▃▃▂▂▂▂▁▁▁274902719326652264722592925692182131741116889148981448914053136841266412328120091170710850NANANA2044NANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:RefiningAndMarketing██▇▇▇▇▂▂▂▃▂▂▂▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁29511290372847028429279682759018708183141811719490191741898918835194471917918909186311892518555184341822518001176461732917117169821671216536NA15089NANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:RetailSegment█▇▅▃▂▁716171046939676766816637NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁2013719008182561756716791161551555915054145581409513682132161273712241118291136510896104401006797249380904187138427813378727580730770406766651962756063584556345431NA4900NANANA
us-gaap:PropertyPlantAndEquipmentNet ██████▄▄▄▄▄▄▄▄▄▄▄▄▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁453334561545034453354509145058277172693126618264432603625786256692576525697255122531925164162941628316241162611599913850138541392113795137991385012643125321241412246122281202611935NA11724NANANA
 us-gaap:PropertyPlantAndEquipmentNet us-gaap:ConsolidatedEntities,dei:LegalEntity us-gaap:VariableInterestEntityPrimaryBeneficiary,mpc:MPLXLP▁█2203022174NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ▅█████▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁12710200402127720277202292018437133586358635863586358635863587364836483649401915651566156615661537937938938938938930930930925842842842842NA837NANANA
 us-gaap:Goodwill us-gaap:ConsolidatedEntities,dei:LegalEntity us-gaap:VariableInterestEntityPrimaryBeneficiary,mpc:MPLXLP▁█77229536NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Goodwill us-gaap:StatementBusinessSegments mpc:Midstream▁█77599517NANANA10323NANANA2276NANANA22562256225622572616NANANA162NANANA162NANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █▆▆▇▇▇▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁436333743442357137273777818833818830784809820833849876886839368379420429420303317326322378369300305334336372367351NA303NANANA
 us-gaap:OtherAssetsNoncurrent us-gaap:ConsolidatedEntities,dei:LegalEntity us-gaap:VariableInterestEntityPrimaryBeneficiary,mpc:MPLXLP▁█11051323NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LiabilitiesCurrent ▆█▇▇▇▆▄▄▃▄▂▂▂▂▁▂▁▁▂▃▃▃▄▅▄▄▄▄▄▃▃▂▃▄▃▃1356916147153391489015147132169634971583721047876476758686671466340678255956345768687258346857910372110551084698241040110241107288203830875689201959186128549NA8620NANANA
us-gaap:DebtCurrent █▄▃▃▃▃▁▁▁▄▁▁▁▁▁▁▂▁▄▄▄▁▁▁▁▁▁▁▁▁▁▁1710711557554550544262626624292928282827215297807807762726262423232322192019NA15NANANANANANANA
us-gaap:AccountsPayableCurrent ▅██▇▇▆▅▅▄▅▃▂▂▂▂▂▁▂▂▃▂▃▅▆▆▅▆▅▅▄▄▃▄▅▄▄8106116231138010905105689366801681137066829761595307534355935055521440834743499362255387666187268934931382348961860188726785695161557803816969747313NA6453NANANA
us-gaap:AccruedIncomeTaxesCurrent ▆▆▅▆██▄▄▄▁▂▁▁▁▁▂▁▁▅▃▅▄▃▅▃▃▃▃▅▃▄▃▃▃▅109811861015122315291446657713639169361177135153163336145184845517933647586909614513609612965598709604582558983NANA524NANANA
us-gaap:OtherLiabilitiesCurrent ██▇▇█▆▄▄▃▃▃▃▃▃▃▃▄▄▃▃▃▃▃▅▃▃▂▃▂▁▁▂▂▂▁▂91889786281592970844243130429626837635037832635939142630936532135432451926527519031515211277204201180125247NA168NANANA
 us-gaap:OtherLiabilitiesCurrent us-gaap:ConsolidatedEntities,dei:LegalEntity us-gaap:VariableInterestEntityPrimaryBeneficiary,mpc:MPLXLP█▁268259NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▇▇▆▇▆▆▃▄▃▃▃▃▃▃▄▄▄▄▃▄▃▃▂▂▂▁▂▂▄▄▄▅██▆▆17031643148716101567150910451156112610991029998108510551174124212161179113911431123109993790685577189592912141266127013481809178315221489NA1493NANANA
us-gaap:MinorityInterest ▇█████▄▄▄▆▆▆▆▆▆▆▆▆▁▁▁▁▁▁▁▁▁▁▁▁714084458918885489078874386538603875679568726928672766466562644565926438648647642639417417414412413413412411NANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ▅█████▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁2408833694337383420733951351751516614958149881403312930126361307013557133951349012902132371227711643113381075110849106201034410920108511178412000116941146710326921695051004989779036824484858693NA
us-gaap:CommonStockValue ██████▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁101010101010777777777777774444444444444444NANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▄███▇▇▇▇▆▇▆▅▅▅▅▅▅▅▅▅▄▄▄▄▃▃▃▃▃▂▂▂▁▁▁6380159901589115146143911475514119135891274512864110441034410046102061016910215958497529736895982697515685663255591550750074969448938803241213614078981062NANANANANANA
us-gaap:TreasuryStockValue ████▇▇▇▆▆▅▅▅▄▄▄▄▄▄▄▄▄▄▃▃▃▂▂▂▁▁151451514315076145731406313175124951209311200986991188664790574827459740773537275708369266512629956165313484941553703267217871253NANANANANANANANANANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▆▆▇████▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▇▇▇▇▇▇▆▅▅▅▁▁▄▄-326-320-212-161-151-144-168-233-233-231-239-236-237-234-327-321-318-318-312-309-313-313-228-218-205-204-205-254-382-464-489-497-862-879-601-596NA-623NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents mpc:WorkersCompensation▆▆▆▆▇█▁▂▃▃▂▂▃▃▃▃▃▃▂▃▄▄▂▃▃▃▃▃▁▁676789013311222233124412332200NANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedGainLossNetCashFlowHedgeParent▁▁▃▃▃▃▃▃▃███112222222444NA4NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▇██▆█▅▇▂█▆▄▅▄▃▇▃▄▅▄▅▃▅▄▄-7682409278726221623272711822386-1372746190184911139914052263327808106999411903881078878766NANA-436207920431833NA347NANANA915NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▆▆▆▆▁▆▇▇▇█▇▆▇▇▇▇▅████▃██-1088-1686-1695-1360-1520-4775-1377-740-778-779-603-656-1356-724-721-769-727-2013-572-468-388-519-3343-321-360NANA-236-1682-419-235NA-311NANANA-484NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▇▂▂▂▂▁▄▁█▁▂▂▆▃▂▃▃▄▃▂▃▃▇▂▂2021-722-813-921-920-1222186-12992557-1044-660-9101523-89-729-48-419288-334-723-218-2291994-598-532NANA-996-520-151-106NA-910NANANA-330NANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▇██▆█▅▇▂█▆▄▅▄▃▇▃▄▅▄▅▃▅▄▄-7682409278726221623272711822386-1372746190184911139914052263327808106999411903881078878766NANA-436207920431833NA347NANANA915NANANANA
us-gaap:NetIncomeLoss ▁▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇-923444310951106-795173710553720169034833022714580111879488268917986728551996261685937257551224814596-751133802529230277405-289
us-gaap:ProfitLoss ▁▇██▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇-10218262136713672591195941123523521251004574101289219783-781689588399038056798642076311735997307591224814596-751133802529NANANANA
us-gaap:DepreciationDepletionAndAmortization ██▇▇▇▇▄▃▃▃▃▃▃▃▃▃▃▂▃▁▁▁▁▁▁962978855886919874555533528540517521536504507500490413508362363359322325320NA299302287283246236230NA227218216NA234269NA
 us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems us-gaap:OperatingSegments██▇▇▇▇▄▃▃▃▃▃▃▃▃▃▃▂▁▁▁▁▁▁▁917931810859860846538516512526503505522489493483476399352349350344310312308NA294297281NA240231NANANANANANANANANA
 us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:Midstream██▇▇▇▇▅▅▄▄▄▄▅▄▄▄▄▁▁▁▁34534230031830730820519118117116916819114714514414038272626NANANANANANANANANANANANANANANANANANANANA
 us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:RefiningAndMarketing█▇▆▇▇▇▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁447430397411427413257252252277266272267272277270273275269268267263257264261NA246252236NA198191NANANANANANANANANA
 us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,mpc:RetailSegment▅█▄▆▅▅▁▁▁125159113130126125767379NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▇█▁▁▆▆▆▆▆46-11-1010000NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncreaseDecreaseInInventories ▆▆▆▁▄▁▃▅▂▄▄▅▃▅▅▃▃▄▄▄▃▄▃▄█422548558-7444-716-149374-44057-56157-264141315-160-226616103-20555-192-771000NANA-62517-440-142NA32NANANA-336NANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▆▆▆▆▁▆▇▇▇█▇▆▇▇▇▇▅████▃██-1088-1686-1695-1360-1520-4775-1377-740-778-779-603-656-1356-724-721-769-727-2013-572-468-388-519-3343-321-360NANA-236-1682-419-235NA-311NANANA-484NANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▅█▇▆▆▆▄▃▄▄▃▃▃▄▃▃▄▃▂▂▂▂▂▁▁106215511404117812411263849711755804663655610745716686745721513375389528383302267NANA229195403331NA309NANANA243NANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▇▂▂▂▂▁▄▁█▁▂▂▆▃▂▃▃▄▃▂▃▃▇▂▂2021-722-813-921-920-1222186-12992557-1044-660-9101523-89-729-48-419288-334-723-218-2291994-598-532NANA-996-520-151-106NA-910NANANA-330NANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▁▄▄▆▅▃▆█▅▃▅▃▁▁▁▁▂▂▃▂▅▃▃▅065500500885675400885132775045275042020515175192156408209682301459689NA1028882431NANA0850NANANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value101010101010777777777777774444444444444444
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Par Or Stated Value Per Share

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value979978978978976975735735734734733732731731731730730729729728364363363363363362362362361361359358358357357356
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-06-302012-03-312011-12-31
Value979978978978976975735735734734733732731731731730730729729728364363363726363362362362361361358358357
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0200.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value648660666673456464480508517530530531531538544275284289295311324333340341350357358358
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value648656662673451459476504513525527528529535541273282287293309322331338340348356356356
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-14.250.681.671.67-0.011.381.632.30.084.131.790.940.060.430.281.510.0030.351.771.523.262.882.382.970.682.090.541.842.192.263.612.391.71-0.213.182.251.490.640.781.14-0.81
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-14.250.681.661.66-0.011.351.622.270.084.091.770.930.060.430.271.510.0030.351.761.513.242.862.362.950.672.070.541.832.172.243.592.381.7-0.213.162.241.480.640.771.13-0.81
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2521531092310433354728081323332278722118186942105519210181801628817155166181681112755156071871620537171912225025438268442328524897262562567723330206862104820242202651942020616207601784217433158971579513362
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value486159186337670256635942371936353011
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.319.020.420.020.218.416.316.416.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.319.020.420.020.218.416.316.416.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value300763701037380402493393038275267072595221877
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax119.3119.0120.4120.0120.8118.4117.2117.3117.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax119.3119.0120.4120.0120.8118.4117.2117.3117.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IntersegmentElimination, mpc:Midstream



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value124212411235121812321207787762631
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.94.04.03.64.43.73.53.43.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.94.04.03.64.43.73.53.43.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination mpc:Midstream100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value361746755100548244294733293128712379
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.315.016.416.315.814.612.913.012.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.315.016.416.315.814.612.913.012.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination mpc:RefiningAndMarketing100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, mpc:RetailSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value222222121
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination mpc:RetailSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mpc:Midstream



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value216022582164214921892175162915121344
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.67.37.06.47.86.77.16.87.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.67.37.06.47.86.77.16.87.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mpc:Midstream100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value211452668826537291542436327783196821917315961
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax83.985.885.586.986.885.986.486.785.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax83.985.885.586.986.885.986.486.785.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mpc:RefiningAndMarketing100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, mpc:RetailSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value677180648679894673788317539652674572
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.925.928.026.726.325.723.723.824.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.925.928.026.726.325.723.723.824.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mpc:RetailSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService

mpc:CrudeOilAndRefineryFeedstocks



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8755759861669136712711011978883
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.51.83.25.04.93.94.44.44.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.51.83.25.04.93.94.44.44.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:CrudeOilAndRefineryFeedstocks100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:Merchandise



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value145715631698160114641576134012861130
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.85.05.54.85.24.95.95.86.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.85.05.54.85.24.95.95.86.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:Merchandise100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:MidstreamServicesAndOther



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value88610578978591053654
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.53.42.93.13.32.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.53.42.93.13.32.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:MidstreamServicesAndOther100.0100.0100.0100.0100.0100.0

mpc:RefinedProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value219972789727462296682465328623198151929216158
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax87.289.788.588.487.888.587.087.286.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax87.289.788.588.487.888.587.087.286.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:RefinedProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

mpc:CrudeOilAndRefineryFeedstocks, mpc:Midstream



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value0-145410-15460
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.50.10.0-0.50.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.50.10.0-0.50.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:CrudeOilAndRefineryFeedstocks mpc:Midstream0.0100.0100.00.0100.0100.0

mpc:CrudeOilAndRefineryFeedstocks, mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value87572094510714741009
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.52.33.03.81.54.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.52.33.03.81.54.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:CrudeOilAndRefineryFeedstocks mpc:RefiningAndMarketing100.0100.0100.0100.0100.0100.0

mpc:Merchandise, mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value111181
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:Merchandise mpc:RefiningAndMarketing100.0100.0100.0100.0100.0100.0

mpc:Merchandise, mpc:RetailSegment



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value145615621697140914741339
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.85.05.55.04.65.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.85.05.55.04.65.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:Merchandise mpc:RetailSegment100.0100.0100.0100.0100.0100.0

mpc:MidstreamServicesAndOther, mpc:Midstream



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value749946712741884544
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.02.32.62.72.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.02.32.62.72.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:MidstreamServicesAndOther mpc:Midstream100.0100.0100.0100.0100.0100.0

mpc:MidstreamServicesAndOther, mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value1138616198145105
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.30.50.30.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.30.50.30.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:MidstreamServicesAndOther mpc:RefiningAndMarketing100.0100.0100.0100.0100.0100.0

mpc:MidstreamServicesAndOther, mpc:RetailSegment



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value24252420245
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.10.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:MidstreamServicesAndOther mpc:RetailSegment100.0100.0100.0100.0100.0100.0

mpc:RefinedProducts, mpc:Midstream



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value169216176216238238
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.70.60.80.71.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.70.60.80.71.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:RefinedProducts mpc:Midstream100.0100.0100.0100.0100.0100.0

mpc:RefinedProducts, mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value165392120620330187502242315636
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.668.265.566.869.468.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.668.265.566.869.468.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:RefinedProducts mpc:RefiningAndMarketing100.0100.0100.0100.0100.0100.0

mpc:RefinedProducts, mpc:RetailSegment



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value528964756956594768174051
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.020.822.421.221.117.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.020.822.421.221.117.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:RefinedProducts mpc:RetailSegment100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

mpc:Midstream



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9181017929931957968842750713
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.63.33.02.83.43.03.73.43.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.63.33.02.83.43.03.73.43.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:Midstream100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value175282201321437236721975122870165521610513412
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax69.570.869.170.670.370.772.672.871.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax69.570.869.170.670.370.772.672.871.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:RefiningAndMarketing100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:ReportableSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value252153109231043335472808132151227872211818694
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.099.4100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.099.4100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:ReportableSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:RetailSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value676980628677894473738307539552654569
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.825.928.026.726.325.723.723.824.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax26.825.928.026.726.325.723.723.824.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mpc:RetailSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Including Assessed Tax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2521531092310433354728267323332298822317188662105519053180331628817155166181681112755156071871620537171912225025438268442328524897262562567723330206862104820242202651942020616207601784217433158971579513362
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.7100.0100.9100.9100.9100.099.299.2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2521531092310433354728267323332298822317188662105519210181801628817155166181681112755156071871620537171912225025438268442328524897262562567723330206862104820242202651942020616207601784217433158971579513362
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.7100.0100.9100.9100.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Sales Revenue Net

Sales Revenue Goods Net

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value228212730127300296822575628112204571951717370188551661716101
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax90.587.887.988.591.786.989.888.292.989.686.588.6

Costs And Expenses

us-gaap:CostsAndExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value35897304672917831646279463052421729207341854420117178101737216101167311602515475127551534117209192461577021084244192556422984259732474322189195221935418950193191889419469170521548515189
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax142.498.094.094.399.594.495.493.799.295.592.795.698.997.596.492.1100.098.391.993.791.794.896.095.298.798.996.495.194.492.093.695.391.693.895.697.496.2

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value8217908339048811147445424402457412485389406420401378433392393358371342316346305358249279305376263299288217226228
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.32.52.72.73.13.52.01.92.22.22.12.72.42.42.52.43.02.82.11.92.11.71.31.21.51.21.41.11.31.41.91.31.51.41.21.41.4

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value-11817841202420426692017140317114401119157698229255343513157533815491335147012591062136936110083019601156118918191482103518521394886496721
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-46.92.76.56.12.46.26.27.72.45.38.25.41.83.22.67.80.62.28.36.58.65.74.25.11.64.01.13.75.05.78.67.35.19.06.75.03.14.6

us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-227-237-198-179-191-219-103-91-88-114-86-83-82-76-67-67-67-75-77-76-80-82-76-61-67-81-59-64-67
Percentage of OperatingIncomeLoss1.9-28.2-9.8-8.8-28.6-10.9-7.3-5.3-20.0-10.2-5.5-8.5-28.1-13.7-15.4-5.1-89.3-22.2-5.0-5.7-5.4-6.5-7.2-4.5-18.6-8.0-19.6-6.7-5.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-0.8-0.6-0.5-0.7-0.7-0.5-0.4-0.5-0.5-0.4-0.5-0.5-0.4-0.4-0.4-0.5-0.5-0.4-0.4-0.5-0.4-0.3-0.2-0.3-0.3-0.2-0.2-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value80222782244227774424251506180152912241661113337462977314742724131772141215511347115914354923831084122318191482
Percentage of OperatingIncomeLoss-6.8270.9110.9111.5111.2120.2107.3105.3120.2109.4105.4115.4128.1113.7177.7112.1362.7122.2114.4105.8105.5107.0109.1104.8136.3127.2112.9105.8100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.27.37.26.82.67.56.68.12.85.88.66.22.33.74.78.82.12.69.56.99.06.14.65.32.11.54.25.28.67.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments2.76.26.05.72.26.35.66.92.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mpc:Midstream



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value90588991987890888967961756734335533230924525820116739310390
Percentage of OperatingIncomeLoss-7.7105.745.443.0135.744.148.436.1128.930.722.533.8105.844.359.315.3222.70.96.07.76.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.62.93.02.63.22.73.02.83.01.61.81.81.91.41.61.21.30.00.50.50.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mpc:Midstream41.939.442.540.941.540.941.740.842.20.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value-622912883906-3349236661025-1337321097562-702193061080-6220714571206131610169711260362227903110516911325
Percentage of OperatingIncomeLoss5.3108.443.644.4-49.945.847.559.9-30.265.469.657.2-24.039.670.382.1-82.761.294.190.389.580.791.492.0100.375.494.195.693.089.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.52.92.82.7-1.22.92.94.6-0.73.55.73.1-0.41.31.86.4-0.51.37.85.97.74.63.84.71.60.93.54.78.06.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mpc:RefiningAndMarketing-2.93.43.33.1-1.43.33.45.3-0.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, mpc:RetailSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value51947744249317061316115995
Percentage of OperatingIncomeLoss-4.456.721.824.125.430.411.59.321.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.11.51.41.50.61.90.70.70.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments mpc:RetailSegment7.75.95.15.52.37.43.03.02.1

Interest Expense

Interest And Debt Expense

us-gaap:InterestAndDebtExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-06-302012-03-31
Value3383023173223063852401951831601571581501361411371421037064817250484645481722
Percentage of InterestAndDebtExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.01.01.01.11.21.10.91.00.80.80.90.90.80.80.81.10.70.40.30.50.30.20.20.20.20.20.10.1

Interest Expense Debt

us-gaap:InterestExpenseDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-03-312011-09-302011-03-312010-09-30
Value35735435235034035123322921318017217316314715314915399776980755649494850494849494645315
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.11.11.01.21.11.01.01.10.90.91.01.00.90.90.91.20.60.40.30.50.30.20.20.20.20.20.20.20.20.20.20.20.20.0

Other Nonoperating Income Expense

Income Loss From Continuing Operations

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value-121555391707172036316321163151625795914198241424172941178-67235147912711389118710121321315254915110811441870129093417441333822439640
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-48.21.75.55.11.35.05.16.91.44.67.44.50.92.41.87.0-0.51.57.96.28.15.34.04.91.41.03.64.75.58.96.44.68.56.44.62.84.1

Nonoperating Income Expense

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value-193727734035310443722228122-11664152504112875395116752143248638233345710881316378385646476338611531293162235
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 RevenueFromContractWithCustomerExcludingAssessedTax-7.70.91.11.10.41.41.01.30.1-5.52.21.40.30.70.52.30.10.42.82.12.81.71.31.70.50.31.21.61.93.12.41.73.02.61.61.01.5

us-gaap:Restatement, us-gaap:BusinessAcquisition

srt:RestatementAdjustment, mpc:Andeavor



Period End2020-03-312019-09-302019-06-302019-03-31
Value360036
Percentage of IncomeTaxExpenseBenefit-1.90.00.034.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:RestatementAdjustment mpc:Andeavor0.00.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-9115143204227111334652118519441129759-1283192478791603936702945724-543539236519
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.40.01.00.10.80.50.20.02.51.01.10.00.70.60.4-1.02.01.34.30.91.82.61.10.02.8-0.02.11.91.80.1

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-10218262136713672591195941123523521251004574101289219783-781689588399038056798642076311735997307591224814596-751133802529
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-40.50.84.44.10.93.74.15.61.310.15.23.20.61.71.34.7-0.61.15.14.15.33.62.73.20.92.50.72.33.13.75.84.02.9-0.45.53.93.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value-924033510441096-149758021055352024900484273201397981181945830891713662842198217721807780123211796131128828541270481
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-36.61.13.43.3-0.03.03.54.80.29.64.72.70.21.90.84.70.01.25.04.05.23.22.63.10.90.82.83.53.85.95.83.05.54.03.01.73.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-10224154131613572521219100612352332133100157598382213780-7816295584390372066985120622272781212321179613
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-40.50.54.24.00.93.84.45.61.210.15.23.20.62.21.34.6-0.61.05.14.15.33.22.63.20.90.82.83.55.95.83.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-923444310951106-795173710553720169034833022714580111879488268917986728551996261685937257551224814596-751133802529230277405-289
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-36.61.43.53.3-0.02.93.24.80.29.64.72.70.21.30.94.80.01.25.14.05.23.62.63.20.92.50.62.33.13.65.84.02.9-0.45.53.93.01.31.72.6-2.2

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-09-302011-06-30
Value-923444310951106-7951737105437201590348330227145800118694782589079767185419916859272475412228121131802
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-36.61.43.53.3-0.02.93.24.80.29.64.72.70.21.30.94.80.01.25.14.05.23.62.63.20.90.62.33.13.65.84.05.53.9

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-09-302011-06-30
Value-923444310951106-7951737105437201590348330227145800118694782589079767185419916859272475412228121131802
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-36.61.43.53.3-0.02.93.24.80.29.64.72.70.21.30.94.80.01.25.14.05.23.62.63.20.90.62.33.13.65.84.05.53.9

Net Income Loss Attributable To Noncontrolling Interest

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value86317985569813996896964369294053031517365036449047468064544745821444134329344133417584311530161306533018230460317052937629159283852900329695307732722326583246812530625745252252396423232
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value54121554495451552830525744788732997319153050127219260042488325024232102233623205222642344017236183631820219070204391833918401170531773917498183611511815116143551609016240151761498714988
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets62.756.355.554.554.551.562.261.760.655.555.654.854.652.351.652.653.354.457.159.960.362.664.562.463.160.161.258.959.755.556.958.263.663.160.262.564.5

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value86317985569813996896964369294053031517365036449047468064544745821444134329344133417584311530161306533018230460317052937629159283852900329695307732722326583246812530625745252252396423232
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value240883369433738342073395135175151661495814988140331293012636130701355713395134901290213237122771164311338107511084910620103441092010851117841200011694114671032692169505100498977903682448485869391728936
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.934.234.435.335.237.828.628.929.828.627.627.828.530.530.930.630.930.740.738.037.635.334.236.235.538.537.439.739.043.043.141.836.436.939.837.50.035.50.00.00.00.0

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value15693201701913918396181511802315873155481452513401116311044311042104019545103048097947110861114311105311339128871359613448127371353114252152971302912516107061158012001116691051310056
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets18.220.519.519.018.819.429.930.128.827.324.823.024.123.422.023.319.422.036.037.336.637.240.646.346.144.946.748.049.747.947.143.445.846.646.343.943.3

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value16901527152512478771687499249994653301120881450216788770917543081127204418812078149418542125216622922018306947374860338718952205307929571622219118117154128108
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.01.51.61.30.91.89.49.79.26.14.53.24.72.01.64.00.72.66.86.16.94.95.87.27.48.17.010.315.417.912.77.78.712.011.76.80.00.50.00.00.00.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value5715
Percentage of CashAndCashEquivalentsAtCarryingValue3.41.0
Percentage of Assets0.10.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary mpc:MPLXLP0.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5583787274617603689358535408491946134695390032593284361731363199260229273124387633644058527157255420555955936163550946105101470858675459491350414393
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.58.07.67.87.16.310.29.59.29.68.37.27.28.17.27.26.26.810.412.611.113.316.619.518.619.619.320.817.916.919.219.123.221.219.521.018.9

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value544615
Percentage of AccountsReceivableNetCurrent9.77.8
Percentage of Assets0.60.6
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary mpc:MPLXLP0.00.0

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value74451024396969088983398375339548551115550549355485392565655245209498352255556554054375642560856215689468957144830487934493889403033523320361536793071
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.610.49.99.410.210.610.110.610.111.311.712.211.812.712.811.811.912.118.418.118.018.517.719.119.516.519.716.315.912.714.616.313.212.914.315.413.2

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value105110
Percentage of InventoryNet1.41.1
Percentage of Assets0.10.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary mpc:MPLXLP0.00.0

Other Assets Current

us-gaap:OtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value9755284574585486461341451481451501861992411761422041921371341741451541251731972061901721101397315614118317065
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.10.50.50.50.60.70.30.30.30.30.30.40.40.50.40.30.50.40.50.40.60.50.50.40.60.70.70.60.60.40.50.30.60.50.70.70.3

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value45110
Percentage of OtherAssetsCurrent4.620.8
Percentage of Assets0.10.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary mpc:MPLXLP0.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value65470646236329062902618826121343276419854117640538397183900238406380063752636877362153560426361260072562125302247122227721987217932137521106208901940919051186891830918073176601736616624
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets75.865.664.564.964.265.981.681.281.882.784.985.883.885.686.783.686.782.687.484.884.983.177.975.875.476.873.771.167.971.371.775.772.470.270.072.571.6

us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value130812891229123413041294835827811792822802782817795791769762713679639618594588570546526525473
Percentage of PropertyPlantAndEquipmentGross2.02.01.92.02.12.11.92.02.02.02.12.12.02.12.12.12.12.12.72.62.52.42.42.62.62.52.52.52.4
Percentage of Assets1.51.31.31.31.41.41.61.61.61.61.81.81.71.81.81.81.81.82.42.22.12.01.92.02.01.91.81.81.7
Percentage of Assets us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.013.20.00.00.028.50.00.00.026.10.00.00.020.615.013.50.011.40.00.07.5

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mpc:Midstream



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value2749027193266522647225929256921821317411168891489814489140531368412664123281200911707108502044
Percentage of PropertyPlantAndEquipmentGross42.042.142.142.141.942.042.141.541.036.836.536.035.633.332.932.632.330.58.1
Percentage of Assets31.827.627.227.326.927.634.333.733.530.431.030.929.928.528.527.228.025.26.7
Percentage of Assets us-gaap:OperatingSegments mpc:Midstream0.00.00.00.00.00.00.00.00.074.70.00.00.070.10.00.00.063.684.9

us-gaap:OperatingSegments, mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value2951129037284702842927968275901870818314181171949019174189891883519447191791890918631189251855518434182251800117646173291711716982167121653615089
Percentage of PropertyPlantAndEquipmentGross45.144.945.045.245.245.143.243.644.048.148.348.749.051.251.151.351.453.270.470.971.171.171.477.877.977.978.278.377.7
Percentage of Assets34.229.529.029.329.029.735.335.436.039.741.041.841.143.844.342.844.643.961.560.160.459.155.759.058.759.857.655.755.4
Percentage of Assets us-gaap:OperatingSegments mpc:RefiningAndMarketing0.00.00.00.00.00.00.00.00.0111.10.00.00.0107.80.00.00.0106.40.00.00.091.187.383.70.086.882.083.688.5

us-gaap:OperatingSegments, mpc:RetailSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value716171046939676766816637
Percentage of PropertyPlantAndEquipmentGross10.911.011.010.810.810.8
Percentage of Assets8.37.27.17.06.97.1
Percentage of Assets us-gaap:OperatingSegments mpc:RetailSegment0.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value20137190081825617567167911615515559150541455814095136821321612737122411182911365108961044010067972493809041871384278133787275807307704067666519627560635845563454314900
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.319.318.618.117.417.429.329.128.928.729.229.127.827.627.325.826.124.233.431.731.129.727.528.727.927.726.124.622.924.924.525.424.022.722.322.721.1

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value45333456154503445335450914505827717269312661826443260362578625669257652569725512253192516416294162831624116261159991385013854139211379513799138501264312532124141224612228120261193511724
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets52.546.345.946.846.848.552.352.152.953.955.656.756.058.059.457.860.658.454.053.153.853.450.547.147.549.047.646.545.046.447.150.348.447.547.749.850.5

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value2203022174
Percentage of PropertyPlantAndEquipmentNet48.648.6
Percentage of Assets25.522.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary mpc:MPLXLP0.00.0

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value12710200402127720277202292018437133586358635863586358635863587364836483649401915651566156615661537937938938938938930930930925842842842842837872
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.720.321.720.921.021.77.06.97.17.37.77.97.88.18.48.38.79.35.25.15.25.14.83.23.23.33.23.23.03.43.53.73.33.33.33.53.60.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value77229536
Percentage of Goodwill60.847.6
Percentage of Assets8.99.7
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary mpc:MPLXLP0.00.0

us-gaap:StatementBusinessSegments

mpc:Midstream



Period End2020-03-312019-12-312018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value7759951710323227622562256225622572616162162
Percentage of Goodwill61.047.551.163.562.961.861.861.965.110.317.3
Percentage of Assets9.09.711.14.65.15.25.15.46.10.50.6
Percentage of Assets mpc:Midstream0.00.00.00.00.00.00.00.00.00.00.0

mpc:RefiningAndMarketing



Period End2020-03-312019-12-312018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312014-09-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312009-12-31
Value055725020519539539539539550550550551551551551551551551550550554577
Percentage of Goodwill0.027.824.914.515.014.814.814.813.735.135.858.758.758.759.259.259.665.465.365.366.266.2
Percentage of Assets0.05.75.41.11.21.21.21.31.31.81.71.91.91.92.02.12.22.12.22.32.40.0
Percentage of Assets mpc:RefiningAndMarketing0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.03.30.03.20.00.03.10.0

Intangible Assets Net Excluding Goodwill

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value436333743442357137273777818833818830784809820833849876886839368379420429420303317326322378369300305334336372367351303
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.13.43.53.73.94.11.51.61.61.71.71.81.81.92.02.02.11.91.21.21.41.41.31.01.11.11.11.31.21.11.11.41.31.41.51.51.3

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value11051323
Percentage of OtherAssetsNoncurrent25.339.2
Percentage of Assets1.31.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary mpc:MPLXLP0.00.0

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value13569161471533914890151471321696349715837210478764767586866714663406782559563457686872583468579103721105510846982410401102411072882038308756892019591861285498620
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.716.415.615.415.714.218.218.816.621.416.314.915.016.114.615.413.414.725.528.527.728.232.737.637.234.635.934.534.930.131.330.736.437.334.135.737.1

Debt Current

us-gaap:DebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value171071155755455054426262662429292828282721529780780776272626242323232219201915
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.00.70.60.60.60.60.00.10.11.30.10.10.10.10.10.10.50.12.62.52.60.10.10.10.10.10.10.10.10.10.10.10.1

Long Term Debt Current

Accounts Payable Current

us-gaap:AccountsPayableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value81061162311380109051056893668016811370668297615953075343559350555214408347434993622553876661872689349313823489618601887267856951615578038169697473136453
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.411.811.611.311.010.115.115.714.016.913.211.711.712.611.711.89.811.016.620.317.821.927.530.431.929.030.929.028.824.926.124.930.831.727.630.527.8

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value521744
Percentage of AccountsPayableCurrent6.46.4
Percentage of Assets0.60.8
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary mpc:MPLXLP0.00.0

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value109811861015122315291446657713639169361177135153163336145184845517933647586909614513609612965598709604582558983524
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.21.01.31.61.61.21.41.30.30.80.40.30.30.40.80.30.42.81.73.12.11.83.12.11.82.12.13.12.22.72.42.32.23.92.3

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value7280
Percentage of AccruedIncomeTaxesCurrent6.66.7
Percentage of Assets0.10.1
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary mpc:MPLXLP0.00.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value91889786281592970844243130429626837635037832635939142630936532135432451926527519031515211277204201180125247168
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.10.90.90.81.00.80.80.80.60.60.60.80.80.90.80.80.91.01.01.21.11.21.01.80.91.00.71.10.50.40.30.80.80.70.51.00.7

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value268259
Percentage of OtherLiabilitiesCurrent29.228.9
Percentage of Assets0.30.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary mpc:MPLXLP0.00.0

Long Term Debt

Long Term Debt Noncurrent

Deferred Tax Liabilities Noncurrent

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value170316431487161015671509104511561126109910299981085105511741242121611791139114311231099937906855771895929121412661270134818091783152214891493
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.01.71.51.71.61.62.02.22.22.22.22.22.42.42.72.82.92.73.83.73.73.63.03.12.92.73.13.13.94.74.85.57.16.96.06.26.4

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value714084458918885489078874386538603875679568726928672766466562644565926438648647642639417417414412413413412411
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.38.69.19.19.29.57.37.57.713.914.715.214.715.015.214.615.814.92.12.12.12.11.31.41.41.51.41.41.31.5

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value240883369433738342073395135175151661495814988140331293012636130701355713395134901290213237122771164311338107511084910620103441092010851117841200011694114671032692169505100498977903682448485869391728936
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.934.234.435.335.237.828.628.929.828.627.627.828.530.530.930.630.930.740.738.037.635.334.236.235.538.537.439.739.043.043.141.836.436.939.837.50.035.50.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value101010101010777777777777774444444444444444
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value6380159901589115146143911475514119135891274512864110441034410046102061016910215958497529736895982697515685663255591550750074969448938803241213614078981062
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.416.216.215.614.915.926.626.325.326.223.622.821.923.023.523.123.022.632.329.227.424.721.621.519.219.417.316.714.614.312.28.75.63.54.2

Treasury Stock Value

us-gaap:TreasuryStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value151451514315076145731406313175124951209311200986991188664790574827459740773537275708369266512629956165313484941553703267217871253
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.515.415.415.014.614.223.623.422.220.119.519.117.316.817.216.817.616.923.522.621.620.717.718.116.614.612.89.05.84.6

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value-326-320-212-161-151-144-168-233-233-231-239-236-237-234-327-321-318-318-312-309-313-313-228-218-205-204-205-254-382-464-489-497-862-879-601-596-623
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.4-0.3-0.2-0.2-0.2-0.2-0.3-0.5-0.5-0.5-0.5-0.5-0.5-0.5-0.8-0.7-0.8-0.7-1.0-1.0-1.0-1.0-0.7-0.7-0.7-0.7-0.7-0.9-1.2-1.7-1.8-2.0-3.4-3.4-2.4-2.5-2.7

us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-117-116-23-23-23-23-51-50-49-48-9-8-8-7-70-69-70
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax35.936.210.814.315.216.030.421.521.020.83.83.43.43.021.421.522.0
Percentage of Assets-0.1-0.1-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.0-0.0-0.0-0.0-0.2-0.2-0.2
Percentage of Assets us-gaap:OtherPostretirementBenefitPlansDefinedBenefit us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value-216-212-197-147-138-132-119-186-189-190-235-233-235-233-263-258-255
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax66.366.292.991.391.491.770.879.881.182.398.398.799.299.680.480.480.2
Percentage of Assets-0.3-0.2-0.2-0.2-0.1-0.1-0.2-0.4-0.4-0.4-0.5-0.5-0.5-0.5-0.6-0.6-0.6
Percentage of Assets us-gaap:PensionPlansDefinedBenefit us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

mpc:WorkersCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value676789013311222233124412332200
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-1.8-2.2-2.8-4.3-5.3-6.2-0.0-0.4-1.3-1.3-0.4-0.4-0.8-0.9-0.6-0.6-0.9-0.9-0.3-0.6-1.3-1.3-0.4-0.9-1.5-1.5-1.0-0.8-0.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets mpc:WorkersCompensation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value1122222224444
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-0.3-0.3-0.9-1.2-1.3-1.4-1.2-0.9-0.9-1.7-1.7-1.7-1.7
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value-7682409278726221623272711822386-1372746190184911139914052263327808106999411903881078878766-436207920431833347915
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.07.79.07.85.88.45.210.8-0.713.09.94.76.85.82.413.52.65.25.74.86.91.74.23.33.3-1.78.99.98.71.75.1

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value-1088-1686-1695-1360-1520-4775-1377-740-778-779-603-656-1356-724-721-769-727-2013-572-468-388-519-3343-321-360-236-1682-419-235-311-484
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.3-5.4-5.5-4.1-5.4-14.8-6.0-3.3-4.2-3.7-3.1-3.6-8.3-4.2-4.3-4.6-5.7-12.9-3.1-2.3-2.3-2.3-13.1-1.2-1.5-0.9-7.2-2.0-1.1-1.5-2.7

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value2021-722-813-921-920-1222186-12992557-1044-660-9101523-89-729-48-419288-334-723-218-2291994-598-532-996-520-151-106-910-330
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.0-2.3-2.6-2.7-3.3-3.80.8-5.913.7-5.0-3.4-5.09.4-0.5-4.4-0.3-3.31.8-1.8-3.5-1.3-1.07.8-2.2-2.3-3.9-2.2-0.7-0.5-4.5-1.8

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value-7682409278726221623272711822386-1372746190184911139914052263327808106999411903881078878766-436207920431833347915
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.07.79.07.85.88.45.210.8-0.713.09.94.76.85.82.413.52.65.25.74.86.91.74.23.33.3-1.78.99.98.71.75.1

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-923444310951106-795173710553720169034833022714580111879488268917986728551996261685937257551224814596-751133802529230277405-289
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-36.61.43.53.3-0.02.93.24.80.29.64.72.70.21.30.94.80.01.25.14.05.23.62.63.20.92.50.62.33.13.65.84.02.9-0.45.53.93.01.31.72.6-2.2

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-10218262136713672591195941123523521251004574101289219783-781689588399038056798642076311735997307591224814596-751133802529
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-40.50.84.44.10.93.74.15.61.310.15.23.20.61.71.34.7-0.61.15.14.15.33.62.73.20.92.50.72.33.13.75.84.02.9-0.45.53.93.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value962978855886919874555533528540517521536504507500490413508362363359322325320299302287283246236230227218216234269
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:OperatingSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value917931810859860846538516512526503505522489493483476399352349350344310312308294297281240231
Percentage of DepreciationDepletionAndAmortization95.395.294.797.093.696.896.996.897.097.497.396.997.497.097.296.697.196.669.396.496.495.896.396.096.298.398.397.997.697.9

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mpc:Midstream



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value34534230031830730820519118117116916819114714514414038272626
Percentage of DepreciationDepletionAndAmortization35.935.035.135.933.435.236.935.834.331.732.732.235.629.228.628.828.69.25.37.27.2

us-gaap:OperatingSegments, mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value447430397411427413257252252277266272267272277270273275269268267263257264261246252236198191
Percentage of DepreciationDepletionAndAmortization46.544.046.446.446.547.346.347.347.751.351.552.249.854.054.654.055.766.653.074.073.673.379.881.281.682.383.482.280.580.9

us-gaap:OperatingSegments, mpc:RetailSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value125159113130126125767379
Percentage of DepreciationDepletionAndAmortization13.016.313.214.713.714.313.713.715.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value46-11-1010000
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.00.00.00.00.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value422548558-7444-716-149374-44057-56157-264141315-160-226616103-20555-192-771000-62517-440-14232-336
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value-1088-1686-1695-1360-1520-4775-1377-740-778-779-603-656-1356-724-721-769-727-2013-572-468-388-519-3343-321-360-236-1682-419-235-311-484
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.3-5.4-5.5-4.1-5.4-14.8-6.0-3.3-4.2-3.7-3.1-3.6-8.3-4.2-4.3-4.6-5.7-12.9-3.1-2.3-2.3-2.3-13.1-1.2-1.5-0.9-7.2-2.0-1.1-1.5-2.7

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value106215511404117812411263849711755804663655610745716686745721513375389528383302267229195403331309243
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value2021-722-813-921-920-1222186-12992557-1044-660-9101523-89-729-48-419288-334-723-218-2291994-598-532-996-520-151-106-910-330
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.0-2.3-2.6-2.7-3.3-3.80.8-5.913.7-5.0-3.4-5.09.4-0.5-4.4-0.3-3.31.8-1.8-3.5-1.3-1.07.8-2.2-2.3-3.9-2.2-0.7-0.5-4.5-1.8

Repayments Of Long Term Debt

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-06-302012-03-31
Value06550050088567540088513277504527504202051517519215640820968230145968910288824310850
Percentage of PaymentsForRepurchaseOfCommonStock0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

Repayments Of Long Term Debt

Debt Instrument Interest Rate Stated Percentage

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value0.160.040000000000000010.20.210.290.030.190.190.09-0.440.290.30.29-0.0100000000000000090.260.33-0.17-0.0099999999999999530.350.340.35-0.0100000000000000090.330.350.340.320.350.34-0.0100000000000000090.350.370.360.350.40.360.370.37
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

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

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

Share Based Compensation

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

Deferred Tax Assets Valuation Allowance

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value256224592522258826800
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.00.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value352365
Percentage of OperatingLeaseRightOfUseAsset13.714.8

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value1694152915281249908172549955004465730152095145421708921136
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:CapitalExpenditure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302012-09-302012-06-30
Value89615451386113210061506841841707881738673759789692682475122345134063426543101322248336277355481
Percentage of CapitalExpenditure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

mpc:CapitalExpendituresAndInvestments

us-gaap:OperatingSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value10091721152113641290163391788571291075975212977997327516431473054246435569632493433403502511546312425
Percentage of CapitalExpendituresAndInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, mpc:Midstream



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value47487078381482395459360148248845349410703743944033501404715615787
Percentage of CapitalExpendituresAndInvestments47.050.651.559.763.858.464.767.967.753.659.765.782.546.853.853.754.495.428.833.824.5

us-gaap:OperatingSegments, mpc:RefiningAndMarketing



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value4596145614303944442261961912621981801923132672782434092982072293733182351782431341420182178
Percentage of CapitalExpendituresAndInvestments45.535.736.931.530.527.224.622.126.828.826.123.914.839.236.537.037.82.855.044.664.553.69.868.552.469.453.491.858.341.9

us-gaap:OperatingSegments, mpc:RetailSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7623717712073235988839
Percentage of CapitalExpendituresAndInvestments7.513.811.68.85.714.410.79.95.5

us-gaap:ConsolidationItems

mpc:CapitalExpendituresExcludingCapitalizedInterest

us-gaap:CorporateNonSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value27563041035717183019181622142124603341212322132531542824
Percentage of CapitalExpendituresExcludingCapitalizedInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:ComprehensiveIncomeLossNetofTaxAttributabletoNonredeemableNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-1004-201252240246224185160182938574554658-27-79-191013
Percentage of ComprehensiveIncomeLossNetofTaxAttributabletoNonredeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:ComprehensiveIncomeLossNetofTaxAttributabletoRedeemableNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value20202021202019201616161716161690000
Percentage of ComprehensiveIncomeLossNetofTaxAttributabletoRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

mpc:Contributionofnetassets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0123001430000
Percentage of Contributionofnetassets0.0100.00.00.0100.00.00.00.00.0

us-gaap:StatementEquityComponents

mpc:Deferredincometaximpactfromchangesinequity

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-07-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value7-16426321125005463-15734485065
Percentage of Deferredincometaximpactfromchangesinequity100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:Energy, us-gaap:TransactionType

mpc:DerivativeInstrumentsPercentageOfDerivativeContractsExpiration1

mpc:Blendingproducts, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.00.153000000000000020.10099999999999998-0.032000000000000030.773
Percentage of DerivativeInstrumentsPercentageOfDerivativeContractsExpiration1100.0100.0100.0100.0100.0

mpc:RefinedProducts, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value0.843-0.024000000000000020.056999999999999940.0200000000000000180.8940.9710.9251.01.00.921.01.01.0
Percentage of DerivativeInstrumentsPercentageOfDerivativeContractsExpiration184.3-15.756.4-62.5115.70.00.00.00.00.00.00.00.0

srt:CrudeOil, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-30
Value0.948-0.064000000000000060.14800000000000002
Percentage of DerivativeInstrumentsPercentageOfDerivativeContractsExpiration194.8-41.8146.5

us-gaap:ConsolidationItems

mpc:GainonExchangeofUndividedJointInterestforEquityOwnership

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value052002070000
Percentage of GainonExchangeofUndividedJointInterestforEquityOwnership0.0100.00.00.0100.00.00.00.00.0

mpc:ImpactofSubsidiaryEquityTransactions



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-7-59612-2400-546-3542791142291790250
Percentage of ImpactofSubsidiaryEquityTransactions100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-07-302019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-52-55-69123-25112380-23467256-80-105
Percentage of ImpactofSubsidiaryEquityTransactions71.40.0115.90.0200.0150.0104.20.00.0-435.966.763.02.263.224.5-4.50.0-42.0

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-295-1-11-1-1-2926-120273421731870355
Percentage of ImpactofSubsidiaryEquityTransactions28.6-15.9-100.0-50.0-4.20.00.0535.933.337.097.836.875.5104.50.0142.0

mpc:ImpairmentCharges



Period End2020-03-31
Value9137
Percentage of ImpairmentCharges100.0

us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-03-31
Value-91370
Percentage of ImpairmentCharges-100.00.0

mpc:IncreaseDecreaseInAccrualForCapitalExpenditures



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-166-6-19-46-235242-10126-49764518-7242-26-6-137116-227-479531-12-19103234-3
Percentage of IncreaseDecreaseInAccrualForCapitalExpenditures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:NumberofRefineries



Period End2020-03-312019-12-312019-09-30
Value16.00.00.0
Percentage of NumberofRefineries100.00.00.0

mpc:OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetPriorServiceCostCreditAdjustmentNetofTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value98883-2977767678878158887888878-17
Percentage of OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetPriorServiceCostCreditAdjustmentNetofTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetPriorServiceCostCreditAdjustmentTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value3-31338-193224444454510545554-5-54-510
Percentage of OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetPriorServiceCostCreditAdjustmentTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetUnamortizedGainLossAdjustmentNetofTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value4-101-42-1-3-1475771447410124895128-78-2-575713590-9
Percentage of OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetUnamortizedGainLossAdjustmentNetofTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetUnamortizedGainLossAdjustmentTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value1-32-1406-1524238243610356375-47-1-34348154-5
Percentage of OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetUnamortizedGainLossAdjustmentTax100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWorkersCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-30
Value1121122200100
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWorkersCompensation100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.0

us-gaap:StatementEquityComponents

mpc:WorkersCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-30
Value1021112200100
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWorkersCompensation100.00.0100.0100.0100.050.0100.0100.00.00.0100.00.00.0

mpc:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForSettlementGainLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value00-7-20-6-45-1-1-50-1-100-4-2-10-2-1-1-6-21-5-64
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForSettlementGainLossBeforeTax0.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:PensionPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value00-7-20-6-45-1-1-50-1-100-4
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForSettlementGainLossBeforeTax0.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

mpc:OtherComprehensiveIncomeOtherTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value000-103-10-10000
Percentage of OtherComprehensiveIncomeOtherTax0.00.00.0100.00.0100.0100.00.0100.00.00.00.00.0

mpc:PensionandOtherPostretirementBenefitNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value5546-196345252-2733327927-862730-77263029-6312628142782-12745
Percentage of PensionandOtherPostretirementBenefitNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:RevenuesAndOtherIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value24080313083120233688286153254123132224451898421236193861835416393172841646016790128301567918758205811724022343254812693323345262742570323345212492025720275
Percentage of RevenuesAndOtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfFinancingCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1414109019161718181615151418141572
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:StockCompensationPlan



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302014-09-302013-09-302012-09-302012-06-302011-09-302011-06-30
Value1044701010234311012544
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges



Period End2020-03-312019-03-312010-06-30
Value7822029
Percentage of AssetImpairmentCharges100.00.0100.0

us-gaap:ConsolidationItems

us-gaap:BusinessCombinationAcquisitionRelatedCosts

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-35-13-22-34-91-183-4-100
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1651279341-817-3270-93471642920641-7161278
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.580.530.530.530.460.460.46
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesIssuanceOfEquityBySubsidiaryToNoncontrollingInterests

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value21-59340114001510-17-30-40
Percentage of ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesIssuanceOfEquityBySubsidiaryToNoncontrollingInterests100.0100.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.00.0100.0

us-gaap:CostsAndExpensesRelatedParty



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value1951921841832041821491381411501481501221501281241078961827610411213015910379727684576380981785712529
Percentage of CostsAndExpensesRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value-62525141223312754021-19-12903428-559160177-21406-10-2-116-35-77-142866797192-12
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1000000.00.00.01000000.00.00.01000000.00.00.01000000.00.01000000.00.0-1000000.00.00.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.00.00.0100.00.00.0100.00.00.0100.00.0100.00.0100.00.00.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-8-6-5-7-4-5-9-8-9-9-9-9-9-10-10-8
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses800.00.00.0-700.00.00.0-900.00.00.0-900.00.0-900.00.01000.00.00.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.00.00.00.00.0-1000000.00.0-1000000.0-1000000.0-1000000.00.0-1000000.0-1000000.0-1000000.0-1000000.00.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.00.00.00.00.0100.00.0100.0100.0100.00.0100.0100.0100.0100.00.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-11-11-11-12-11-8-9-8-8-10-10-9-10-11-12-12
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.00.00.00.00.0800.00.0800.0800.01000.00.0900.01000.01100.01200.00.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligationBenefitsPaid

us-gaap:OtherPensionPlansDefinedBenefit



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-30
Value67636165
Percentage of DefinedBenefitPlanBenefitObligationBenefitsPaid100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1113912111198878
Percentage of DefinedBenefitPlanBenefitObligationBenefitsPaid183.30.0128.6200.0366.70.0150.0800.0133.30.0160.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value34333131323425242625252426252424
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value89910987877878998
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value25262727282918181819191819181818
Percentage of DefinedBenefitPlanInterestCost312.5288.9300.0270.0311.1362.5257.1225.0257.1271.4237.5257.1237.5200.0200.0225.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value18161717171513151311141114171616
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value57475453475074303076273023202521
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost316.7293.8317.6311.8276.5333.3569.2200.0230.8690.9192.9272.7164.3117.6156.2131.2

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value00-7-20-6-45-1-1-50-1-100-4-2
Percentage of DefinedBenefitPlanRecognizedNetGainLossDueToSettlements10.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0

us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value9788887876667888
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value69595760585236353633333531282929
Percentage of DefinedBenefitPlanServiceCost766.7842.9712.5750.0725.0650.0514.3437.5514.3550.0550.0583.3442.9350.0362.5362.5

us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeGainLossOnDerivativeNet

us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value215-634918-100105-66-57-281-9-5-8-91-22-12-55188139-7359505155-116-51-16154-59-283400
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:CommodityContract, us-gaap:CostOfSales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value131-625015-8093-69-56-2741-7-24-82-19-5-61179140-7045486145-114-61-17051-60-251356
Percentage of DerivativeGainLossOnDerivativeNet60.998.4102.083.380.088.6104.598.296.4400.0-11.1140.0300.090.186.441.7110.995.2100.795.976.396.293.598.3119.6105.694.4101.788.789.0

us-gaap:CommodityContract, us-gaap:Sales



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value84-1-13-20123-1-1-3-10216-9-3-769-1-3141910-210931-3244
Percentage of DerivativeGainLossOnDerivativeNet39.11.6-2.016.720.011.4-4.51.83.6-300.0111.1-40.0-200.09.913.658.3-10.94.8-0.74.123.73.86.51.7-19.6-5.65.6-1.711.311.0

us-gaap:DividendsCommonStockCash



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-31
Value37735035135731820721121919620318519019019117016917117113613713914112112411311611611987
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-31
Value37735035135731820721121919620318519019019117016917117113613713914112112411311611611987
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312018-01-012017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-30
Value0.210.00.00.00.210.00.00.00.210.210.00.00.00.350.00.350.00.350.00.00.00.350.350.350.350.00.350.350.350.35
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate100.00.00.00.0100.00.00.00.0100.0100.00.00.00.0100.00.0100.00.0100.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate



Period End2020-03-312019-03-31
Value0.030.0
Percentage of EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate100.00.0

us-gaap:EffectiveIncomeTaxRateReconciliationDeductionsOther



Period End2020-03-312019-03-31
Value-0.10.0
Percentage of EffectiveIncomeTaxRateReconciliationDeductionsOther100.00.0

us-gaap:EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense



Period End2020-03-312019-03-31
Value-0.01-0.04
Percentage of EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments



Period End2020-03-312019-03-31
Value0.010.0
Percentage of EffectiveIncomeTaxRateReconciliationOtherAdjustments100.00.0

us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes



Period End2020-03-312019-03-31
Value0.020.12
Percentage of EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes100.0100.0

us-gaap:EquityMethodInvestmentDividendsOrDistributions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value17518916316214817412812889136115766192787150
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment

srt:Subsidiaries, mpc:MarkWestUticaEMG



Period End2020-03-31
Value1250
Percentage of EquityMethodInvestmentOtherThanTemporaryImpairment100.0

us-gaap:IncomeStatementLocation

mpc:IncomeLossfromEquityMethodInvestments



Period End2020-03-31
Value1315
Percentage of EquityMethodInvestmentOtherThanTemporaryImpairment105.2

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value-20336733619
Percentage of EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value-44314713518
Percentage of EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentSummarizedFinancialInformationRevenue



Period End2020-03-312019-03-312018-03-312017-03-312016-03-31
Value1072162811327767
Percentage of EquityMethodInvestmentSummarizedFinancialInformationRevenue100.0100.0100.0100.0100.0

us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss

us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value13-109-2-514-21-1130-17112-6-15-12-5-6
Percentage of FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302011-06-30
Value14-79-1-626-20-123-17-22212-22-6-15-123-5-6-12-14511002-1
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1-1-2-1-23-4-4-3-8-6-1-3-8-1-242000
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:FairValueOfAssetsAcquired



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0175003500000
Percentage of FairValueOfAssetsAcquired0.0100.00.00.0100.00.00.00.00.0

us-gaap:GainLossOnDispositionOfAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value4854421417132-20756102512-1572111111-11751254152
Percentage of GainLossOnDispositionOfAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillImpairmentLoss



Period End2020-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value73300000001129-14414400
Percentage of GoodwillImpairmentLoss100.00.00.00.00.00.00.0100.0100.0100.0100.00.00.0

us-gaap:IncomeStatementLocation

mpc:ImpairmentExpense



Period End2020-03-31
Value7330
Percentage of GoodwillImpairmentLoss100.0

us-gaap:StatementBusinessSegments

mpc:Midstream



Period End2020-03-312016-12-312016-09-302016-06-302016-03-31
Value1814101129
Percentage of GoodwillImpairmentLoss24.70.00.0100.0100.0

mpc:RefiningAndMarketing



Period End2020-03-312016-12-312016-09-302016-06-302016-03-31
Value55160000
Percentage of GoodwillImpairmentLoss75.30.00.00.00.0

mpc:RetailSegment



Period End2020-03-31
Value0.0
Percentage of GoodwillImpairmentLoss0.0

us-gaap:GoodwillTransfers



Period End2020-03-31
Value0.0
Percentage of GoodwillTransfers0.0

us-gaap:StatementBusinessSegments

mpc:Midstream



Period End2020-03-31
Value56
Percentage of GoodwillTransfers0.0

mpc:RefiningAndMarketing



Period End2020-03-31
Value-56
Percentage of GoodwillTransfers0.0

mpc:RetailSegment



Period End2020-03-31
Value0.0
Percentage of GoodwillTransfers0.0

us-gaap:ConsolidatedEntities, us-gaap:StatementBusinessSegments

us-gaap:ImpairmentOfLongLivedAssetsHeldForUse

srt:Subsidiaries, mpc:Midstream



Period End2020-03-31
Value350
Percentage of ImpairmentOfLongLivedAssetsHeldForUse100.0

us-gaap:IncomeStatementLocation

mpc:ImpairmentExpense



Period End2020-03-31
Value492
Percentage of ImpairmentOfLongLivedAssetsHeldForUse140.6

us-gaap:StatementBusinessSegments

mpc:RefiningAndMarketing



Period End2020-03-31
Value142
Percentage of ImpairmentOfLongLivedAssetsHeldForUse40.6

us-gaap:IncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value-121064124107991119680868284835751-208-502230232015322957359708792151791818
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value-3453560645-1861483-2482-851224-145521608627-215748-3951442-810-693-1116348-939-1865-676-171011-7022491-63862-332299
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value-1899409-1357131037-2298484321-96797640-11-333465-67601-325-361-752512-691-1218-585300-139655884-491393406471
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable



Period End2020-03-312019-03-31
Value133519
Percentage of IncreaseDecreaseInIncomeTaxesReceivable100.0100.0

us-gaap:InterestCostsCapitalizedAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value36464535322521161816141815171516161011887776744293630
Percentage of InterestCostsCapitalizedAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2671613109974767
Percentage of InterestExpenseOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:InterestPaidCapitalized

us-gaap:CorporateNonSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value294032343125211618161314121615151711108877761374
Percentage of InterestPaidCapitalized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3033032923102693672416721279215741577815882160101322128480280383-253-3248
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryLIFOReservePeriodCharge



Period End2020-03-312019-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value32200000000-3851537000
Percentage of InventoryLIFOReservePeriodCharge100.00.00.00.00.00.00.00.0100.0100.0100.00.00.0

us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems



Period End2020-03-312019-03-31
Value-32200
Percentage of InventoryLIFOReservePeriodCharge-100.00.0

us-gaap:InvestmentIncomeInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-09-302011-06-30
Value61012991626252011745131112212212223221111
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value300289295305285186182179173165149142137131128121111199786654
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value300289295305285186182179173165149142137131128121111199786654
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossAttributableToNonredeemableNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value-1004-201252240246224185160182938574554658-27-79-191013
Percentage of NetIncomeLossAttributableToNonredeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value20202021202019201616161716161690000
Percentage of NetIncomeLossAttributableToRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-102381347134623911759221215219210998855785273203774-78168958
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-1004252240246224185160182938574554658-27-79-1910
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest9.818.717.8102.919.120.113.283.14.48.613.364.716.828.6-3.5101.3-11.31.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-923410951106-79517371055372016903483302271458011187948
Percentage of NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest90.281.382.2-2.980.979.986.816.995.691.486.735.383.271.4103.5-1.3111.399.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value-11-11-11-12-11-9-9-9-9-11-10-10-11-12-13-12-12-12-13-12-13-12-13-12-13-11-13
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.00.00.00.00.0-1000000.00.0-1000000.0-1000000.0-1000000.00.0-1000000.0-1000000.0-1000000.0-1000000.0
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax-0.0-0.0-0.0-0.0-0.011.1-0.011.111.19.1-0.010.09.18.37.7

us-gaap:PensionPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-11-11-11-12-11-8-9-8-8-10-10-9-10-11-12
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.088.9100.088.988.990.9100.090.090.991.792.3

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value-4-105-51-5-117331-2-21-32-193-6-10-8-62-2-88-24-16-428776
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-2-93010280-10-38000630
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax50.088.6-0.0-20.0-0.0164.70.0-100.0-0.0181.0-0.00.0-0.067.7-0.0

us-gaap:PensionPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-2-13-51-6-1-21332014-32-130-6
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax50.012.4100.0120.0100.0-123.5100.0200.0-0.0-66.7100.0100.0100.032.3100.0

us-gaap:StatementEquityComponents

mpc:WorkersCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value010009000300000002-1-204-1-1020
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-0.0-1.0-0.0-0.0-0.052.90.00.0-0.0-14.3-0.00.0-0.00.0-0.0-0.00.0-25.016.7-100.0-0.0-4.54.26.2-0.02.30.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value00000100-200
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax-0.0-0.0-0.0-0.0-0.05.90.00.0100.0-0.0-0.0

us-gaap:OtherComprehensiveIncomeLossBeforeReclassificationsTax



Period End2020-03-312019-12-312019-03-312018-12-31
Value1-32013
Percentage of OtherComprehensiveIncomeLossBeforeReclassificationsTax100.0100.00.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-6-108-51-10-724650-28-31-393-6-30-6-340-85-10-13-1491288225836517-278-526
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-1-9300028-1-1-1-39-10-163-1
Percentage of OtherComprehensiveIncomeLossNetOfTax16.786.1-0.0-0.0-0.0116.7-1.50.050.0-487.533.30.033.367.716.7

us-gaap:PensionPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-4-15-50-9-6-13673145-22-230-5
Percentage of OtherComprehensiveIncomeLossNetOfTax66.713.998.090.085.7-54.2103.10.0-50.0562.566.7200.066.732.383.3

us-gaap:StatementEquityComponents

mpc:WorkersCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value-11-1-1-19-1-2020-1000-102-1-203-1-1020
Percentage of OtherComprehensiveIncomeLossNetOfTax16.7-0.92.010.014.337.5-1.50.0-0.025.0-0.0-100.0-0.00.0-0.033.30.0-33.333.3-50.00.0-3.510.07.7-0.01.60.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0-1000000-200
Percentage of OtherComprehensiveIncomeLossNetOfTax-0.00.9-0.0-0.0-0.00.00.00.0100.00.0-0.0

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-6-51-10-724650-28-31-393-6-6-3-85-10-13-11288225836517-278-5
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value-9-6-5-6-4-5-8-8-9-8-9-8-9-11-10-8-11-14-15-14-16-13-13-13-14-18-22
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-1000000.00.00.01000000.00.00.01000000.00.00.01000000.00.01000000.00.0-1000000.00.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax11.1-0.0-0.0-16.7-0.0-0.0-12.5-0.0-0.0-12.5-0.0-12.5-0.09.1-0.0

us-gaap:PensionPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-8-6-5-7-4-5-9-8-9-9-9-9-9-10-10
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax88.9100.0100.0116.7100.0100.0112.5100.0100.0112.5100.0112.5100.090.9100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value-1-3-10-2-710-1118-1-10-11-10011237324263
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value00000-10-10-11-2000
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax-0.0-0.0-0.00.0-0.014.30.0100.00.0-5.6-100.0200.00.0-0.00.0

us-gaap:PensionPlansDefinedBenefit, us-gaap:AccumulatedDefinedBenefitPlansAdjustment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-1-300-2-5110118-110-11
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax100.0100.0-0.00.0100.071.4110.0-0.0100.0100.0100.0-100.00.0100.0100.0

us-gaap:StatementEquityComponents

mpc:WorkersCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value0.00.0-1000000.00.00.0-1000000.0-1000000.00.00.01000000.0-1000000.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax-0.0-0.0100.00.0-0.014.3-10.0-0.00.05.6100.0-0.00.0-0.00.0-0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-30
Value0.00.00.00.00.01000000.00.00.00.00.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax-0.0-0.0-0.00.0-0.0-14.30.0-0.00.0-0.0

us-gaap:OtherComprehensiveIncomeOtherNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312011-09-30
Value-11-1-1-19-30-20000-1
Percentage of OtherComprehensiveIncomeOtherNetOfTax100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.0100.0

us-gaap:OtherOperatingActivitiesCashFlowStatement



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value-17-278243-397934-421-103-48-8130-35-41-3717150-4-42-672717412-8-18-13341
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value71673130358047453010192844372492928411725295412212481814181846171319810
Percentage of OtherOperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-10-31-13-18-19-9-23-26-11-84-74-67-23-50-36-19-7-29-11-10-31-57-4-46-28-9-130-11-3
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:PaymentsOfDividendsCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value377344348352354317207211219195202186190190190170169170171136136138141122123113116116119858789
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:OperatingSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value16927219727032518710477417553111566486910520925677210742754-177-41-123-75-6-5-50
Percentage of PaymentsToAcquireEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:PaymentsToFundLongtermLoansToRelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-06-302012-03-31
Value1692721972703251871047741755311156648691056611072107427217741123172147
Percentage of PaymentsToFundLongtermLoansToRelatedParties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToMinorityShareholders



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-06-302012-03-31
Value32029531031532530420519919518918116615815314012812111119978665400
Percentage of PaymentsToMinorityShareholders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:ProceedsFromCollectionOfLongtermLoansToRelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-06-302012-03-31
Value772317562011501418156191000316030171130
Percentage of ProceedsFromCollectionOfLongtermLoansToRelatedParties100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.00.0100.00.0100.0100.0100.00.0

us-gaap:ProceedsFromIssuanceOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value443120391219710103611435215441362854225270
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value42505005810536026042741112509610250420022411500128586246500528890263302700000
Percentage of ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.00.0100.00.00.00.00.0

us-gaap:DebtInstrument

us-gaap:ProceedsFromLongTermLinesOfCredit

mpc:MPLXRevolvingCreditFacilitydueJuly2024



Period End2020-03-31
Value1325
Percentage of ProceedsFromLongTermLinesOfCredit100.0

mpc:NewMPCFiveYearRevolver



Period End2020-03-31
Value2000
Percentage of ProceedsFromLongTermLinesOfCredit150.9

mpc:TradeReceivablesSecuritizationdueJuly2021



Period End2020-03-31
Value925
Percentage of ProceedsFromLongTermLinesOfCredit69.8

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

mpc:NewMPCFiveYearRevolver, us-gaap:SubsequentEvent



Period End2020-04-30
Value1500
Percentage of ProceedsFromLongTermLinesOfCredit0.0

us-gaap:ProceedsFromMinorityShareholders



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value02009534411021262202
Percentage of ProceedsFromMinorityShareholders0.0100.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-06-302012-03-31
Value-15-5-8-30-26-6-3-11-8-3-27-11-61-2212276121459310-93
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value5683119243557715273521392777211182152631462125
Percentage of ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfLongTermDebtAndCapitalSecurities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value152151954385085203126311316526417225762071575064611145179366421516620655563333
Percentage of RepaymentsOfLongTermDebtAndCapitalSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

us-gaap:RepaymentsOfLongTermLinesOfCredit

mpc:MPLXRevolvingCreditFacilitydueJuly2024



Period End2020-03-31
Value575
Percentage of RepaymentsOfLongTermLinesOfCredit100.0

mpc:TradeReceivablesSecuritizationdueJuly2021



Period End2020-03-31
Value925
Percentage of RepaymentsOfLongTermLinesOfCredit160.9

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

mpc:NewMPCFiveYearRevolver, us-gaap:SubsequentEvent



Period End2020-05-05
Value2750
Percentage of RepaymentsOfLongTermLinesOfCredit0.0

us-gaap:RevenueFromRelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value165210186186186182201199172171157147154572212123222231228232733
Percentage of RevenueFromRelatedParties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-06-302012-03-31
Value1021001011010101110-11101
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.00.0100.0100.00.00.0100.00.0100.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensationForfeited

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-30
Value0.00.00.00.00.00.00.00.00.01000000.00.00.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensationForfeited0.00.00.00.00.00.00.00.00.0100.00.00.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-31
Value163011282891514241851705-2-242-11742-29324522133
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-06-302013-03-312012-06-302012-03-31
Value122-16341340000
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation6.26.718.2-3.62.120.028.64.216.780.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensationForfeited

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value2-31034284129331330164125503
Percentage of StockIssuedDuringPeriodValueShareBasedCompensationForfeited100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensationGross

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value17311932286141827197101036114352154314104
Percentage of StockIssuedDuringPeriodValueShareBasedCompensationGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockholdersEquityOther



Period End2020-03-312019-09-302019-06-302019-03-312016-12-312016-09-302016-06-302016-03-312014-12-312014-09-302014-06-302014-03-312012-12-312012-09-302012-06-302012-03-312011-03-31
Value141-1-1018-5-180090009-251
Percentage of StockholdersEquityOther100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.00.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312016-12-312016-09-302016-06-302016-03-312012-06-302012-03-31
Value041-1-1018-500
Percentage of StockholdersEquityOther0.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:TaxesExcludingIncomeAndExciseTaxes



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value2512011901741862091231221031151161151081031121111099595104971028698104828889666664746359685963
Percentage of TaxesExcludingIncomeAndExciseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TemporaryEquityOtherChanges



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value20212020-191917-16-16-16-17-16-16-9
Percentage of TemporaryEquityOtherChanges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.00.1199999999999974453.8257.1862.98-2.340000000000003473.0376.368.741.690000000000004853.8552.3550.150.700000000000002842.7636.3543.960.340000000000003450.8650.9795.031.379999999999995585.1588.1487.60.1299999999999954570.7380.3180.95
Percentage of TreasuryStockAcquiredAverageCostPerShare0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockSharesAcquired



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value01109141151219138149012243827458614116
Percentage of TreasuryStockSharesAcquired0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value0000000101000001011111110201
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic0.00.00.00.00.00.00.0100.00.0100.00.00.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value0000000101000001011111110201
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted0.00.00.00.00.00.00.0100.00.0100.00.00.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0

us-gaap:UnrealizedGainLossOnDerivatives



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-312012-12-312012-09-302012-03-312011-03-31
Value47-26756-2975-12-1514-15-42-31-284723-471859-3012-3233-2325057-5198-927
Percentage of UnrealizedGainLossOnDerivatives100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value044055444533233222222221
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment0.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mpc:EnergyRelatedInventoryRefinedProducts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5700554851524601518652343005281127462839270626632674281026892633276128042769288028622955273123672540236726512471241617612038160418531725179519871716
Percentage of EnergyRelatedInventoryRefinedProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Range, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel

mpc:FairValueInputsForwardCommodityPrice

srt:Maximum, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.681.231.071.141.251.011.651.58
Percentage of FairValueInputsForwardCommodityPrice100.0100.0100.0100.0100.0100.0100.0100.0

srt:Minimum, us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.260.430.410.460.60.580.780.7
Percentage of FairValueInputsForwardCommodityPrice38.235.038.340.448.057.447.344.3

mpc:InventorybeforeValuationReserve



Period End2020-03-312019-12-31
Value1066510243
Percentage of InventorybeforeValuationReserve100.0100.0

us-gaap:AccrualForEnvironmentalLossContingencies



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value418433447449451455104108112114117128129132145156166163166172177185182137123123127132134123118119117117120125116
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapitalCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value3316933157331253378533764337291370313688136691126211236111851115911060110051099610982110719929991298909844983398229803976897489737967695279563942694109482
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value18172110991010101110101012121211123530121310999999102223444
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CrudeOilAndNaturalGasLiquids



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3717347234153468368936551717205917772056214722852148220822301990204421802250214721072219240528352734179726151958211713831589215412531339157614521118
Percentage of CrudeOilAndNaturalGasLiquids100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtAndCapitalLeaseObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value320402928229294288552857127980189681780117807134181326913106131121106911077115831210412475675367606766665762833639365933953401340634113355334233273299
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value302310318324330328413
Percentage of DebtInstrumentUnamortizedDiscountPremiumNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrument

us-gaap:DebtWeightedAverageInterestRate

mpc:MPC364DayRevolverdueSeptember2020



Period End2020-03-31
Value0.0
Percentage of DebtWeightedAverageInterestRate0.0

mpc:MPLXRevolvingCreditFacilitydueJuly2024



Period End2020-03-31
Value0.0194
Percentage of DebtWeightedAverageInterestRate0.0

mpc:NewMPCFiveYearRevolver



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.01890.00.00.00.0
Percentage of DebtWeightedAverageInterestRate0.00.00.00.00.0

mpc:TradeReceivablesSecuritizationdueJuly2021



Period End2020-03-31
Value0.0
Percentage of DebtWeightedAverageInterestRate0.0

us-gaap:DeferredCreditsAndOtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value122912651265117411311318689659651666640627615604602629746735557566747768727596775781835754931257255300267264284304277
Percentage of DeferredCreditsAndOtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value422409
Percentage of DeferredCreditsAndOtherLiabilitiesNoncurrent34.332.3

us-gaap:DeferredFinanceCostsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1291341371241261281051071095961626444464851
Percentage of DeferredFinanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value57726392618052355011486432063144312026543935392338883861368235203285
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value1112
Percentage of DeferredIncomeTaxLiabilitiesNet0.20.2

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:OtherCurrentAssets, us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value629106176201160283991716012629654641671231215610739635579180559181536230116887545
Percentage of DerivativeAssetFairValueGrossLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCurrentLiabilities, us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value25611141617141214157813101175
Percentage of DerivativeAssetFairValueGrossLiability0.34.73.45.58.85.717.28.220.011.15.11.31.91.83.27.16.512.8

us-gaap:OtherNoncurrentLiabilities, us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value435549585754675448524237384738362827
Percentage of DerivativeAssetFairValueGrossLiability6.851.927.828.935.619.167.731.680.041.314.26.89.16.612.223.126.269.2

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset

us-gaap:CommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value67955161200128-32362134211182574963916882781466762258
Percentage of DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeCollateralObligationToReturnCash

us-gaap:CommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value773776842220162282277812664257200
Percentage of DerivativeCollateralObligationToReturnCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeAsset

us-gaap:OtherCurrentAssets, us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value786631842371394006213421127257537392688278161691136861943178744412188587849991126
Percentage of DerivativeFairValueOfDerivativeAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCurrentLiabilities, us-gaap:CommodityContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value001211000000000000
Percentage of DerivativeFairValueOfDerivativeAsset0.00.00.50.80.70.20.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value75457176227122370621342112725753439068827715867104317
Percentage of DerivativeFairValueOfDerivativeAsset95.990.595.795.887.892.5100.0100.0100.0100.0100.099.499.5100.099.698.197.192.0100.0

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value32691218310000000011120
Percentage of DerivativeFairValueOfDerivativeAsset4.19.54.95.112.97.80.00.00.00.00.00.00.00.00.40.61.41.80.0

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value0000000000032001170
Percentage of DerivativeFairValueOfDerivativeAsset0.00.00.00.00.00.00.00.00.00.00.00.60.50.00.00.61.46.20.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral

us-gaap:CommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value10782439127800090411001425159
Percentage of DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.0100.00.00.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeFairValueOfDerivativeLiability

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value61095165193142255991716012629654641671231215610739180
Percentage of DerivativeFairValueOfDerivativeLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value1911121224370000000000000
Percentage of DerivativeFairValueOfDerivativeLiability3.111.67.36.216.914.50.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommodityContract, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value0000002212512646100
Percentage of DerivativeFairValueOfDerivativeLiability0.00.00.00.00.00.02.01.21.71.61.70.20.50.81.33.80.90.00.0

us-gaap:EmbeddedDerivativeFinancialInstruments, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value456054656561826659645243445444413432
Percentage of DerivativeFairValueOfDerivativeLiability7.463.232.733.745.823.982.838.698.350.817.67.910.67.614.126.331.882.1

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral

us-gaap:CommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value101258221250-1634100
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.00.0

us-gaap:EmbeddedDerivativeFinancialInstruments, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value456054656561826659645243445444413432
Percentage of DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral4500.00.05400.03250.01300.0762.54100.03300.05900.03200.01040.00.0-4400.0900.01466.71025.03400.00.0

us-gaap:DerivativeLiabilityCollateralRightToReclaimCashOffset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value165115333133737398395128240474232039
Percentage of DerivativeLiabilityCollateralRightToReclaimCashOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency

us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset

us-gaap:CommodityContract, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value628106176203161284991716012629654741971231315810739180
Percentage of DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Energy, us-gaap:DerivativeInstrumentRisk, us-gaap:Position, us-gaap:TransactionType

us-gaap:DerivativeNonmonetaryNotionalAmount

mpc:RefinedProducts, us-gaap:OtherContract, us-gaap:Long, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-30
Value200
Percentage of DerivativeNonmonetaryNotionalAmount100.0100.0100.0

mpc:RefinedProducts, us-gaap:OtherContract, us-gaap:Short, us-gaap:ExchangeTraded



Period End2020-03-312019-09-30
Value10
Percentage of DerivativeNonmonetaryNotionalAmount68.924.3

srt:CrudeOil, us-gaap:OtherContract, us-gaap:Long, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-30
Value356
Percentage of DerivativeNonmonetaryNotionalAmount149.1540.0704.9

srt:CrudeOil, us-gaap:OtherContract, us-gaap:Short, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-30
Value001
Percentage of DerivativeNonmonetaryNotionalAmount24.934.7162.2

us-gaap:Energy, us-gaap:Position, us-gaap:TransactionType

mpc:Blendingproducts, us-gaap:Long, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-30
Value312
Percentage of DerivativeNonmonetaryNotionalAmount139.1208.0297.3

mpc:Blendingproducts, us-gaap:Short, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-30
Value337
Percentage of DerivativeNonmonetaryNotionalAmount130.4396.8833.3

mpc:RefinedProducts, us-gaap:Long, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-30
Value201517
Percentage of DerivativeNonmonetaryNotionalAmount791.11610.31839.4

mpc:RefinedProducts, us-gaap:Short, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-30
Value161211
Percentage of DerivativeNonmonetaryNotionalAmount658.61317.81217.1

srt:CrudeOil, us-gaap:Long, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-30
Value292635
Percentage of DerivativeNonmonetaryNotionalAmount1134.12767.13873.0

srt:CrudeOil, us-gaap:Short, us-gaap:ExchangeTraded



Period End2020-03-312019-12-312019-09-30
Value462740
Percentage of DerivativeNonmonetaryNotionalAmount1791.12867.14421.3

us-gaap:EmployeeRelatedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value110711269397789581152493432337591459395528530439366302503417369474427345286259406341284316364287225261312267222266
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value15
Percentage of EmployeeRelatedLiabilitiesCurrent0.10.4

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, mpc:OwnershipType

us-gaap:EquityMethodInvestmentOwnershipPercentage

mpc:BakkenPipelineSystem, mpc:IndirectOwnershipInterest



Period End2020-03-312019-12-312019-09-302019-06-30
Value0.09190.090.090.09
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0

us-gaap:EquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5656689867256729655858984910483848174787476948234704382735543793380736221073994902865862690602463417328327321300302302302321323312
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value39925275
Percentage of EquityMethodInvestments70.676.5

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value45605465656184686066574117519017617135834231230749047847564763962560661160000000
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:ConsolidatedEntities, us-gaap:LongtermDebtType

us-gaap:FinanceLeaseLiability

srt:ParentCompany, mpc:FinanceLease



Period End2020-03-312019-12-312018-12-31
Value692679629
Percentage of FinanceLeaseLiability100.0100.0100.0

srt:Subsidiaries, mpc:FinanceLease



Period End2020-03-312019-12-312018-12-31
Value14196
Percentage of FinanceLeaseLiability2.02.81.0

us-gaap:GuaranteeObligationsByNature

us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:GuaranteeTypeOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value10312112212312312392929393939283828383
Percentage of GuaranteeObligationsMaximumExposure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:FinancialSupportToNonconsolidatedLegalEntity, us-gaap:GuaranteeObligationsByNature

mpc:CrowleyBlueWaterPartnersLLC, us-gaap:GuaranteeOfIndebtednessOfOthers, us-gaap:FinancialGuarantee



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value118122122125125128128132
Percentage of GuaranteeObligationsMaximumExposure114.6100.8100.0101.6101.6104.1139.1143.5

mpc:CrowleyOceanPartnersLLC, us-gaap:GuaranteeOfIndebtednessOfOthers, us-gaap:FinancialGuarantee



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value125130125125135163163163
Percentage of GuaranteeObligationsMaximumExposure121.4107.4102.5101.6109.8132.5177.2177.2

mpc:GrayOakPipelineLLC, us-gaap:GuaranteeOfIndebtednessOfOthers, us-gaap:FinancialGuarantee



Period End2020-03-312019-12-312019-09-302019-06-30
Value345292226138
Percentage of GuaranteeObligationsMaximumExposure335.0241.3185.2112.2

mpc:LoopAndLocapLlc, us-gaap:GuaranteeOfIndebtednessOfOthers, us-gaap:FinancialGuarantee



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value171171171171171171160160
Percentage of GuaranteeObligationsMaximumExposure166.0141.3140.2139.0139.0139.0173.9173.9

us-gaap:InventoryValuationReserves



Period End2020-03-312019-12-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value322000003853700
Percentage of InventoryValuationReserves100.00.00.00.00.0100.0100.00.0

us-gaap:DebtInstrument

us-gaap:LettersOfCreditOutstandingAmount

mpc:MPC364DayRevolverdueSeptember2020



Period End2020-03-31
Value0.0
Percentage of LettersOfCreditOutstandingAmount0.0

mpc:MPLXRevolvingCreditFacilitydueJuly2024



Period End2020-03-31
Value0.0
Percentage of LettersOfCreditOutstandingAmount0.0

mpc:NewMPCFiveYearRevolver



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value1113232
Percentage of LettersOfCreditOutstandingAmount0.00.00.00.00.0

mpc:TradeReceivablesSecuritizationdueJuly2021



Period End2020-03-31
Value0.0
Percentage of LettersOfCreditOutstandingAmount0.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

mpc:MPC364DayRevolverdueApril2021, us-gaap:SubsequentEvent



Period End2020-05-05
Value0.0
Percentage of LettersOfCreditOutstandingAmount0.0

mpc:MPC364DayRevolverdueSeptember2020, us-gaap:SubsequentEvent



Period End2020-05-05
Value0.0
Percentage of LettersOfCreditOutstandingAmount0.0

mpc:NewMPCFiveYearRevolver, us-gaap:SubsequentEvent



Period End2020-05-05
Value1000000.0
Percentage of LettersOfCreditOutstandingAmount0.0

mpc:TradeReceivablesSecuritizationdueJuly2021, us-gaap:SubsequentEvent



Period End2020-05-05
Value0.0
Percentage of LettersOfCreditOutstandingAmount0.0

us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument

us-gaap:LineOfCredit

srt:ParentCompany, mpc:MPCBankRevolvingCreditFacilities



Period End2020-03-312019-12-31
Value20000
Percentage of LineOfCredit100.00.0

srt:Subsidiaries, mpc:MPLXRevolvingCreditFacilitydueJuly2024



Period End2020-03-312019-12-31
Value7500
Percentage of LineOfCredit37.50.0

us-gaap:DebtInstrument

mpc:MPC364DayRevolverdueSeptember2020



Period End2020-03-31
Value0.0
Percentage of LineOfCredit0.0

mpc:MPLXRevolvingCreditFacilitydueJuly2024



Period End2020-03-31
Value750
Percentage of LineOfCredit37.5

mpc:NewMPCFiveYearRevolver



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value20000000
Percentage of LineOfCredit100.00.00.00.00.0

mpc:TradeReceivablesSecuritizationdueJuly2021



Period End2020-03-31
Value0.0
Percentage of LineOfCredit0.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

mpc:MPC364DayRevolverdueApril2021, us-gaap:SubsequentEvent



Period End2020-05-05
Value0.0
Percentage of LineOfCredit0.0

mpc:MPC364DayRevolverdueSeptember2020, us-gaap:SubsequentEvent



Period End2020-05-05
Value0.0
Percentage of LineOfCredit0.0

mpc:NewMPCFiveYearRevolver, us-gaap:SubsequentEvent



Period End2020-05-05
Value750
Percentage of LineOfCredit0.0

mpc:TradeReceivablesSecuritizationdueJuly2021, us-gaap:SubsequentEvent



Period End2020-05-05
Value0.0
Percentage of LineOfCredit0.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

mpc:MPC364DayRevolverdueApril2021, us-gaap:SubsequentEvent



Period End2020-05-05
Value1000
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity100.0

mpc:NewMPCFiveYearRevolver, us-gaap:SubsequentEvent



Period End2020-05-05
Value5000
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity500.0

mpc:TradeReceivablesSecuritizationdueJuly2021, us-gaap:SubsequentEvent



Period End2020-05-052019-07-19
Value517750
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity51.70.0

us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

srt:ParentCompany, mpc:MPC364DayRevolverdueApril2021, us-gaap:SubsequentEvent



Period End2020-04-27
Value1000
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

mpc:TradeReceivablesSecuritizationdueJuly2021, us-gaap:SubsequentEvent



Period End2020-05-05
Value750
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity0.0

us-gaap:DebtInstrument

us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity

mpc:MPC364DayRevolverdueSeptember2020



Period End2020-03-31
Value1000
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity100.0

mpc:MPLXRevolvingCreditFacilitydueJuly2024



Period End2020-03-31
Value2750
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity275.0

mpc:NewMPCFiveYearRevolver



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value29994999499949684968
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity299.90.00.00.00.0

mpc:TradeReceivablesSecuritizationdueJuly2021



Period End2020-03-31
Value750
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity75.0

us-gaap:DebtInstrument, us-gaap:SubsequentEventType

mpc:MPC364DayRevolverdueApril2021, us-gaap:SubsequentEvent



Period End2020-05-05
Value1000
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity0.0

mpc:MPC364DayRevolverdueSeptember2020, us-gaap:SubsequentEvent



Period End2020-05-05
Value1000
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity0.0

mpc:NewMPCFiveYearRevolver, us-gaap:SubsequentEvent



Period End2020-05-05
Value4249
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity0.0

mpc:TradeReceivablesSecuritizationdueJuly2021, us-gaap:SubsequentEvent



Period End2020-05-05
Value517
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity0.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent



Period End2020-05-05
Value6766
Percentage of LineOfCreditFacilityRemainingBorrowingCapacity0.0

us-gaap:LongTermDebtAndCapitalLeaseObligations



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value298992812728282278532756526980184231724117232123221275312577125701054410538110321135111896591259185967661062383612363533733380338733943342332933163292
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value2046719704
Percentage of LongTermDebtAndCapitalLeaseObligations68.570.1

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent



Period End2020-03-312019-12-312018-12-31
Value1710711544
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value49
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent0.21.3

us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtFairValue

us-gaap:CarryingReportedAmountFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value31000283002830027900276002700018036170231701012642125441236212350102971028510774112761162863756376637762655886325432703001300230043006
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value27700301003020029400285002650018421173211789313893136901330513114108921105611196110861136664026537684365716224369136703306327033223559
Percentage of LongTermDebtFairValue89.4106.4106.7105.4103.398.1102.1101.8105.2109.9109.1107.6106.2105.8107.5103.998.397.7100.4102.5107.3104.9105.7113.4112.2110.2108.9110.6118.4

us-gaap:ConsolidatedEntities

us-gaap:NotesPayable

srt:ParentCompany



Period End2020-03-312019-12-312018-12-312017-12-31
Value1010110
Percentage of NotesPayable100.0100.0100.00.0

us-gaap:OperatingLeaseLiabilityCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6306045866156130
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.00.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value6766
Percentage of OperatingLeaseLiabilityCurrent10.610.9

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value194918751962206821530
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.00.0

us-gaap:ConsolidatedEntities, dei:LegalEntity

us-gaap:VariableInterestEntityPrimaryBeneficiary, mpc:MPLXLP



Period End2020-03-312019-12-31
Value284302
Percentage of OperatingLeaseLiabilityNoncurrent14.616.1

us-gaap:OtherInventorySupplies



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value1000996907801744720465455435494486439414485442419399438371338302302308333333425365321275231
Percentage of OtherInventorySupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RecordedThirdPartyEnvironmentalRecoveriesReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value29293035333536484545455858586274687067666667715150514949515149484951535456
Percentage of RecordedThirdPartyEnvironmentalRecoveriesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value9689689681005100410041003100310001000100010001000100010009930
Percentage of RedeemableNoncontrollingInterestEquityCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RestrictedCashCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value423231383544
Percentage of RestrictedCashCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetailRelatedInventoryMerchandise



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value2482272222182142281521601531611541611561531631671641731661751661661648682100838071746787656565
Percentage of RetailRelatedInventoryMerchandise100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-31
Value31228421394265643061428584404919031188181886320828198021956419797202031995719935194941967512925122901198011390112661103710758113321126412197124121210511467103269216950582449172
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-31
Value-326-320-212-161-151-144-168-233-233-231-239-236-237-234-327-321-318-318-312-309-313-313-228-218-205-204-205-254-382-464-489-497-862-879-623-520
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-1.0-0.8-0.5-0.4-0.4-0.3-0.9-1.2-1.2-1.1-1.2-1.2-1.2-1.2-1.6-1.6-1.6-1.6-2.4-2.5-2.6-2.7-2.0-2.0-1.9-1.8-1.8-2.1-3.1-3.8-4.3-4.8-9.4-9.2-7.6-5.7

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value33169331573312533785337643372913703136881366911262112361118511159110601100510996109821107199299912989098449833982298039768974897379676952795639426941094820
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest106.278.777.778.578.876.672.072.772.554.156.757.256.454.755.155.256.356.376.880.782.686.487.389.091.186.286.579.878.078.783.491.3102.199.80.0

us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value10101010101077777777777777444444444444440
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value71408445891888548907887438653860387567956872692867276646656264456592643864864764263941741741441241341341241100000
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest22.920.020.920.620.820.120.320.520.532.634.735.434.032.932.932.333.832.75.05.35.45.63.73.83.83.63.73.43.33.40.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value6380159901589115146143911475514119135891274512864110441034410046102061016910215958497529736895982697515685663255591550750074969448938803241213614078980
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest20.437.937.335.233.633.574.272.267.661.855.852.950.750.551.051.249.249.675.372.969.066.060.957.352.048.644.540.736.232.128.320.715.39.40.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value-15145-15143-15076-14573-14063-13175-12495-12093-11200-9869-9118-8664-7905-7482-7459-7407-7353-7275-7083-6926-6512-6299-5616-5313-4849-4155-3703-2672-1787-1253-852-743-74300
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-48.5-35.9-35.3-33.8-32.8-29.9-65.7-64.3-59.4-47.4-46.0-44.3-39.9-37.0-37.4-37.2-37.7-37.0-54.8-56.4-54.4-55.3-49.8-48.1-45.1-36.7-32.9-21.9-14.4-10.4-7.4-7.2-8.10.00.0

us-gaap:TreasuryStockShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value32932932831830929528427926724823522621220320320220019819519192898278736559453428
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-31
Value329329328318309295284279267248235226212203203202200198195191928982157736559280
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0201.3100.0100.0100.0100.00.0

Line plots across dimensions of each concept

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments


us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems


us-gaap:PropertyPlantAndEquipmentGross us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:Goodwill us-gaap:StatementBusinessSegments


us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents


us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:RetirementPlanType, us-gaap:StatementEquityComponents


us-gaap:DepreciationDepletionAndAmortization us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments