PSXP


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

Table of contents


us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:GeneralAndAdministrativeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
dei:LegalEntity

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestAndDebtExpense

us-gaap:NetIncomeLoss
dei:LegalEntity
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:PartnerCapitalComponents

us-gaap:ProfitLoss
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:StatementEquityComponents

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:Revenues
dei:LegalEntity
us-gaap:MajorCustomers
us-gaap:ProductOrService
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:AssetsCurrent
us-gaap:ConsolidatedEntities

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:ReceivablesNetCurrent
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:InventoryRawMaterialsAndSupplies

us-gaap:PrepaidExpenseAndOtherAssetsCurrent
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:ConsolidatedEntities
us-gaap:AssetsNoncurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:AccountsPayableCurrent

us-gaap:ContractWithCustomerLiabilityCurrent
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:DebtCurrent
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument
us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:DebtInstrument

us-gaap:LiabilitiesCurrent
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:TaxesPayableCurrent
us-gaap:ConsolidatedEntities
us-gaap:LiabilitiesNoncurrent

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:OtherLiabilitiesNoncurrent
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
dei:LegalEntity
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

us-gaap:ProfitLoss
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:TypeOfArrangement
mlp:AdministrativeFeesExpenseByMonth

mlp:AvailableCashDistributedOrToBeDistributed
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

mlp:CapitalExpendituresAndInvestments

mlp:CapitalExpendituresCashAndNoncash

mlp:CashContributionsFromToParentOther

mlp:ChangeInCapitalExpenditureAccruals

mlp:CostAndExpenses

mlp:EntitiesUnderCommonControlCashPaymentAssignedToAssetsReceived

mlp:GainLossFromEquityInterestTransfer

mlp:NetIncomeLossAllocatedToPreferredUnitholdersRedeemable

mlp:NetIncomeLossAttributableToPartners

mlp:NoncontrollingInterestIncreaseFromContributions
us-gaap:StatementEquityComponents

mlp:NoncontrollingInterestIncreaseFromTransferOfEquityInterest
us-gaap:StatementEquityComponents

mlp:OtherComprehensiveIncomeLossNonSponsoredDefinedBenefitPlansNetOfTax
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:SubsidiarySaleOfStock
mlp:PartnersCapitalAccountPublicSaleOfUnitsBrokersCommissions
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:SubsidiarySaleOfStock
mlp:PartnersCapitalAccountPublicSaleOfUnitsOtherCosts
us-gaap:SubsidiarySaleOfStock
mlp:PartnersCapitalAccountUnitsAmountAuthorized
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:SubsidiarySaleOfStock
mlp:PartnersCapitalAccountUnitsAmountAuthorizedPerProgram

mlp:PartnersCapitalAccountValueRepurchaseOfPreferredUnits
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty
dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
mlp:PaymentsToFundCashCalls

mlp:ProceedsFromThirdPartyFinancingActivities

mlp:RevenuesAndOtherIncome

mlp:TaxesOtherThanIncomeTaxesIncludingExciseTaxes

us-gaap:AssetImpairmentCharges
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
dei:LegalEntity
us-gaap:DebtInstrumentPeriodicPaymentInterest

us-gaap:Depreciation
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount
us-gaap:DilutiveSecurities
us-gaap:DistributionsMadeToMemberOrLimitedPartnerByDistributionType, us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:DistributionMadeToLimitedPartnerCashDistributionsDeclared
us-gaap:StatementScenario, us-gaap:DistributionsMadeToMemberOrLimitedPartnerByDistributionType, us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInInterestPayableNet

us-gaap:IncreaseDecreaseInOtherAccruedLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories

us-gaap:NetIncomeLossAllocatedToLimitedPartners

us-gaap:NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherExpenses

us-gaap:OtherNoncashIncomeExpense

us-gaap:PartnersCapitalAccountDistributions
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:SubsidiarySaleOfStock
us-gaap:PartnersCapitalAccountPublicSaleOfUnitsNetOfOfferingCosts

us-gaap:PartnersCapitalAccountSaleOfUnits
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:PartnersCapitalOther
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:PaymentsForRepurchaseOfPreferredStockAndPreferenceStock
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:PaymentsOfCapitalDistribution
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:PaymentsToMinorityShareholders
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount
us-gaap:PreferredStockRedemptionPremium

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital

us-gaap:ProceedsFromIssuanceOfCommonLimitedPartnersUnits

us-gaap:ProceedsFromIssuanceOfDebt

us-gaap:ProceedsFromMinorityShareholders

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty

us-gaap:RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty

us-gaap:RepaymentsOfDebt
dei:LegalEntity
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:ResultsOfOperationsRevenueOther
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:UndistributedEarnings
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:WeightedAverageLimitedPartnershipUnitsOutstanding
us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:WeightedAverageLimitedPartnershipUnitsOutstandingDiluted
us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

mlp:AssetRetirementObligationAndAccrualForEnvironmentalLossContingencies

mlp:AssetRetirementObligationsAndAccruedEnvironmentalCost
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
mlp:EffectiveOwnershipInterestPercentage

mlp:LessorOperatingLeasePaymentToBeReceivedAfterYearFour

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AssetRetirementObligation
us-gaap:CreditFacility
us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DebtInstrumentFairValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType
us-gaap:CreditFacility
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:DebtInstrument

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DueFromRelatedPartiesCurrent

us-gaap:DueToRelatedPartiesCurrent
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentOwnershipPercentage

us-gaap:EquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:GuaranteeObligationsCurrentCarryingValue

us-gaap:InterestPayableCurrent

us-gaap:LeaseDepositLiability
us-gaap:ProductOrService

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LessorOperatingLeasePaymentsToBeReceived

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFiveYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFourYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths

us-gaap:LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThereafter

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThreeYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedTwoYears

us-gaap:LettersOfCreditOutstandingAmount
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:LimitedPartnersCapitalAccount
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:CreditFacility
us-gaap:LineOfCredit

us-gaap:LineOfCreditFacilityFairValueOfAmountOutstanding
us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:PartnersCapital

us-gaap:PartnersCapitalAttributableToNoncontrollingInterest

us-gaap:PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:PartnerCapitalComponents
us-gaap:StatementEquityComponents
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:PreferredUnitsPreferredPartnersCapitalAccounts

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:RevenueRemainingPerformanceObligation
us-gaap:LimitedPartnersCapitalAccountByClass
us-gaap:SaleOfStockPricePerShare

us-gaap:ShortTermBorrowings
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Income Tax Expense Benefit
Balance Sheet
Cash And Cash Equivalents At Carrying Value
Assets
Cash And Cash Equivalents At Carrying Value
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Operating Lease Liability Noncurrent
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Receivable
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Next Twelve Months

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
 us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:LimitedPartnersCapitalAccountByClass mlp:CommonUnits▄▄228.340146228.340146NA242.159937242.159937242.132052NA206.093464138.643801NANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
 EBT Margin dei:LegalEntity mlp:DakotaAccessLLC▁█198.0215.0NA196.0169.0258.0NA258.0NANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
 TTM Greenblatt ROC _ _▇▁▄▇█▇██▇▇▇▇▆▆▆▄▄▄▄▃▃▃▄▃▂▂▂▂▂235.0-11.0112.0217.0255.0227.0255.0238.0234.0199.0223.0217.0186.0174.0166.099.0104.097.0103.083.373.660.495.052.441.935.635.129.532.3NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:ComprehensiveIncomeNetOfTax ▇▁▄▇█▇██▇▇▇▇▆▆▇▄▄▄▆▄▃▃▃▃▃▂▂▂▂▂225.0-19.0104.0206.0255.0226.0255.0237.0233.0198.0221.0217.0186.0172.0225.099.0103.097.0187.782.773.257.964.552.342.035.436.330.030.927.2NANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▆▁▁█9.07.07.010.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▇▁▄▇█▇██234.0-12.0111.0216.0255.0226.0255.0237.0NANANANANANANANANANANANANA60.9NANANA32.8NANANANANANA
us-gaap:GeneralAndAdministrativeExpense ▄▃▂▂▃▃▂▂▃▄▂▂▂▂█▂▂▃▁▃▂18.017.016.016.017.017.016.016.017.018.016.016.016.016.021.016.016.017.015.017.016.0NANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▇▁▄▇█▇██▇▇▇▇▆▆▆▄▄▄▄▃▃▃▄▃▂▂▂▂▂▂▂▂235.0-11.0112.0217.0255.0227.0255.0238.0234.0199.0223.0217.0186.0174.0166.099.0104.097.0103.083.373.660.495.052.441.935.635.129.532.328.317.117.5
us-gaap:IncomeTaxExpenseBenefit 1.0NA1.01.00.01.00.01.01.01.02.00.00.02.03.00.01.00.01.20.20.40.20.10.1-0.10.20.20.10.20.30.10.2
us-gaap:InterestAndDebtExpense ████▇▇▇▇▇▇▇▇▇▇▇▆▆▆▅▃▃▃▃▃▃▂▁▁▁▁▁▁32.033.032.032.028.029.028.026.027.027.028.028.029.030.030.023.024.024.021.29.911.09.99.39.29.55.92.11.41.30.50.20.1
us-gaap:NetIncomeLoss ▇▁▄▇█▇██▇▇▇▇▆▆▆▄▄▄▄▄▃▄▄▃▃▂▂▂▂▂▂▂225.0-18.0104.0206.0255.0226.0255.0237.0233.0198.0221.0217.0186.0172.0164.099.0103.097.0102.083.173.294.095.052.342.035.434.929.432.128.017.017.3
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▆▁▁█9.07.07.010.0NANANANANANANANANANANANANANA0.00.03.0-3.0NANANANANANANANANANA
 us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:LimitedPartnersCapitalAccountByClass,us-gaap:PartnerTypeOfPartnersCapitalAccount mlp:CommonUnits,us-gaap:LimitedPartner209.0NANANA246.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:LimitedPartnersCapitalAccountByClass,us-gaap:PartnerTypeOfPartnersCapitalAccount mlp:CommonUnits,us-gaap:LimitedPartner▇▁▄▇█▇209.0-30.0104.0206.0255.0226.0NA237.0159.0NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax █▁0.0-1.0NANANANANANANANANANANANANANANANANANANANANANANA-1.5NANANANANANA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:PartnerCapitalComponents us-gaap:AccumulatedOtherComprehensiveIncome█▁0.0-1.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▇▁▄▇█▇██234.0-11.0111.0216.0255.0226.0255.0237.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇██▇█████▁▆▆▇▅▅▅▅▇▇▇▇▇▇▆▆▄▄▄▄▄▄280.0252.0265.0265.0241.0267.0291.0270.0263.0302.0-296.0106.0111.0256.08.011.011.010.0228.0222.0219.0204.0203.0174.0168.0150.01.70.72.41.30.11.7
us-gaap:Revenues ██████████▁███▆▆▆▆█▇▇▇▇▇▇▇▆▆▆▆▆▆280.0252.0265.0265.0241.0267.0291.0270.0263.0302.0-742.0265.0254.0256.08.011.011.010.0228.0222.0219.0204.0203.0174.0168.0150.01.70.72.41.30.11.7
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:Assets ████████▇▇▇▆▆▆▆▅▅▅▅▄▃▃▂▂▂▂▁▁▁▁▁▁7001.07053.07258.07294.07203.06997.06961.07190.06544.06353.05819.05643.05506.05386.05334.04219.04168.04125.04109.02880.52772.72682.11523.51471.01469.11454.0539.5350.5342.7332.4584.2578.6
us-gaap:Liabilities ███▇▇███▇▇▆▆▆▆▆▅▅▅▅▃▃▃▃▃▃▃▂▁▁▁▁▁4162.04200.04167.04087.03990.04144.04127.04436.03928.03799.03310.03200.03173.03152.03173.02444.02397.02497.02543.01222.11429.91368.01133.41134.91144.71135.4467.3177.5176.1177.610.110.5
us-gaap:LiabilitiesAndStockholdersEquity ████████▇▇▇▆▆▆▆▅▅▅▅▄▃▃▂▂▂▂▁▁▁▁▁▁7001.07053.07258.07294.07203.06997.06961.07190.06544.06353.05819.05643.05506.05386.05334.04219.04168.04125.04109.02880.52772.72682.11523.51471.01469.11454.0539.5350.5342.7332.4584.2578.6
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:AssetsCurrent ▂▂▂▂▂▃▅█▃▂▂▃▃▃▃▁▂▁▂▁▁▁▁▂▂▂▁▁▁▁▅▅152.0143.0140.0111.0128.0214.0414.0774.0240.0116.0129.0239.0263.0283.0292.087.094.088.0100.070.183.664.977.4105.3133.5170.136.267.058.348.8439.4434.6
us-gaap:CashAndCashEquivalentsAtCarryingValue ▁▁▁▁▁▂▄█▂▁▁▂▃▃▃▁▁▁▁▁▁▁▂▂▂▂▁▁▁▁▆▆2.03.07.02.07.092.0286.0655.0130.02.01.0100.0151.0167.0185.02.01.01.02.019.035.720.148.072.9104.3137.68.343.034.521.1425.1421.6
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▁▁▁▁▁▂▄█▂▁▁▂▃▃▃▁▁▂▁2.03.07.02.07.092.0286.0655.0130.02.01.0100.0151.0167.0185.02.01.0124.02.0NANANA50.0NANANA17.0NANANANANA
us-gaap:AccountsReceivableNetCurrent ▁▁▁▁▁▁▁▁██▁▁▁▁▁5.03.03.03.04.04.04.04.088.090.05.05.06.03.03.0NANANANANANANANANANANANANANANANANA
us-gaap:ReceivablesNetCurrent ▆██▁▄▄▇▆101.0107.0106.088.097.095.0105.0101.0NANA95.0NANANANANANANANANANANANANANANANANANANANANA
us-gaap:InventoryRawMaterialsAndSupplies █▄▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁36.016.016.014.014.013.013.013.013.013.013.012.013.013.012.012.012.012.011.05.55.55.22.52.52.52.32.22.02.0NA2.0NA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▅▇▄▂▃▅▃▁▃▄█▃▃▄▃13.017.011.07.010.014.010.05.09.011.020.010.010.012.09.0NANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
 us-gaap:AssetsNoncurrent us-gaap:ConsolidatedEntities us-gaap:VariableInterestEntityPrimaryBeneficiaryNANA12884.0NANANA12072.0NANANA9561.0NANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentGross NANA4825.04725.04620.04499.04408.04287.04158.04076.03995.03920.03840.03789.03754.03478.03447.03420.03400.01999.91983.51926.9760.4751.5738.5717.6732.4514.1511.1506.9214.5212.1
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType mlp:CavernsAndRelatedAssetsNANA732.0742.0636.0NA585.0NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType mlp:ProcessingAndRelatedAssetsNANA1063.01058.01059.0NA1041.0NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType mlp:TerminalsandStorageFacilitiesNANA847.0840.0779.0NA741.0NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingAndBuildingImprovementsNANA115.095.094.094.094.092.092.091.089.089.088.088.088.087.084.088.088.058.257.457.630.030.028.327.727.316.116.115.96.16.2
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA394.0312.0444.0409.0367.0266.0314.0271.0216.0160.097.061.047.053.033.042.027.033.8119.9180.912.725.450.032.054.58.68.16.43.13.3
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandNANA19.019.019.019.019.019.019.019.019.019.019.019.019.019.019.019.019.014.114.114.16.05.96.05.917.45.05.05.04.04.0
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:PipelinesNANA1518.01522.01452.01447.01424.01413.01405.01400.01398.01387.01382.01377.01372.01352.01349.01338.01335.0264.1263.4230.3229.5214.7180.5180.1165.0151.3150.7150.836.235.9
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA1186.01150.01120.01089.01059.01029.01000.0972.0943.0921.0892.0864.0836.0803.0777.0751.0725.0325.6310.7285.4268.0262.5257.5252.3247.3240.2236.4233.078.677.1
us-gaap:PropertyPlantAndEquipmentNet NANA3639.03575.03500.03410.03349.03258.03158.03104.03052.02999.02948.02925.02918.02675.02670.02669.02675.01674.31672.81641.5492.4489.0481.0465.3485.1273.9274.7273.9135.9135.0
us-gaap:Goodwill ███████████████████▁▁▁▁▁▁▁▁▁▁▁▁▁185.0185.0185.0185.0185.0185.0185.0185.0185.0185.0185.0185.0185.0185.0185.0185.0185.0185.0185.02.52.52.52.52.52.52.52.52.52.52.52.52.5
us-gaap:OperatingLeaseRightOfUseAsset NANA44.0NANANA44.044.044.045.0NANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ██████████▁49.050.050.050.050.052.052.052.049.051.05.0NANANANANA2.02.02.024.90.60.70.710.110.49.50.9NA0.20.1NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:AccountsPayableCurrent ▄▄▆█▇▆▇▆▆▆▇█▄▃▃▃▃▃▃▂▂▂▁▁▂▂▁▁48.054.073.0104.088.075.084.079.074.082.088.099.049.030.039.031.027.028.031.019.620.115.68.39.213.614.710.24.2NANA8.0NA
us-gaap:ContractWithCustomerLiabilityCurrent ▄▄▃▂▂▁▁▁▁▂███34.038.027.022.024.019.016.019.017.022.060.060.061.0NA35.0NANANANANANANANANANANANANANANANANA
us-gaap:DebtCurrent NANA465.0NANANA25.0NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtCurrent us-gaap:BusinessAcquisition,us-gaap:DebtInstrument mlp:BakkenPipelineAndMSLPAcquisition,us-gaap:MunicipalBondsNANA50.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtCurrent us-gaap:CreditFacility,us-gaap:LongtermDebtType us-gaap:RevolvingCreditFacility,us-gaap:LineOfCreditNANA415.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtCurrent us-gaap:DebtInstrument us-gaap:MunicipalBondsNANA50.0NANANA75.0NANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ███▇▆▃▃▆▄▃▄▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁629.0666.0633.0553.0455.0204.0199.0512.0317.0188.0270.0238.0210.0186.0171.0135.0133.0104.0111.0104.961.643.237.730.140.631.333.714.513.415.29.610.1
us-gaap:OperatingLeaseLiabilityCurrent NANA1.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent █▄▄▄▄▄▄█▃▄▅▃▃▂▃▃▂▂▄▂▁▁▁▁8.03.03.03.04.03.03.08.02.03.05.02.02.01.02.02.01.01.03.01.10.20.20.10.2NA0.30.3NA0.10.30.40.2
us-gaap:TaxesPayableCurrent ▆▄▄█▆▄▃█▅▄▃▇▅▅▅▆▅▅▃▄▄▃▂▂▂▂▁▂▁▁▁▁20.012.011.028.022.012.010.028.018.013.09.024.016.018.015.021.015.016.010.011.811.79.55.16.65.03.42.73.52.62.91.01.1
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
 us-gaap:LiabilitiesNoncurrent us-gaap:ConsolidatedEntities us-gaap:VariableInterestEntityPrimaryBeneficiaryNANA4673.0NANANA4322.0NANANA496.0NANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebt ████████▆▆▅▅▅▅▅▁▁▂▂3445.03444.03444.03443.03442.03491.03491.03490.03174.03173.02998.02922.02921.02921.02920.02273.02227.02359.02411.0NANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ████████▇▇▇▇▇▇▇▆▅▆▆▃▃▃▃▃▃▃▁3445.03444.03444.03443.03442.03491.03491.03490.03174.03173.02998.02922.02921.02921.02920.02273.02227.02357.02396.01091.41131.11090.91090.71099.71099.71099.718.0NANANANANA
us-gaap:DebtAndCapitalLeaseObligations ███▇▇▆▆▇▅▅▄▄▄▄▄▁▁3910.03944.03909.03783.03707.03516.03516.03815.03324.03188.03048.02922.02946.02946.02945.02290.02252.0NA2411.0NANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▇▇▇▇▇▇████▁88.090.090.091.093.093.094.094.096.097.042.0NANANA66.0NANANA23.0NANANA0.50.60.50.50.5NANANANANA
us-gaap:OperatingLeaseLiabilityNoncurrent NANA43.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA3.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA3.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA3.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA3.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA87.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆██▄-2.0-2.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.2-0.8-0.8-1.5NANANANANANANANANA
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders ▁▁█▁13.013.019.013.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▅▃█▅▇▆▇▇▄▆▆▅▃█▃▂▂▁▂▂▁286.0227.0170.0296.0215.0274.0259.0276.0276.0205.0240.0255.0226.0171.0302.0152.0131.0139.0121.0128.0132.0111.0NANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ███▇▆▆▇▇▇▅▆▇▇█▅███▁▇█▇-3.0-39.0-61.0-157.0-317.0-273.0-156.0-148.0-110.0-533.0-313.0-170.0-152.0-60.0-583.0-88.0-62.0-49.0-1223.0-168.0-73.0-94.0NANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▃▂▃▂▁▅▃▅▃▃▃▃▅▃▃▃█▃▃▃-284.0-192.0-104.0-144.017.0-195.0-472.0397.0-38.0329.0-26.0-136.0-90.0-129.0464.0-63.0-69.0-91.01085.023.0-43.0-47.0NANANANANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▄▄▄▃▂▁█-1.0-4.05.0-5.0-85.0-194.0-369.0525.0NANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:IncreaseDecreaseInAccountsPayable ▄▅▁█▅▅▅▆▅▅▅▆▅▅▇▅▅▅▇▅▅▆▅▄▅▅▆▅▅▅▅-5.02.0-36.027.0-4.0-3.00.010.01.0-4.03.011.01.0-4.014.02.0-1.0-1.016.2-1.4-1.75.92.5-6.4-1.3-3.212.9-0.9-1.4-1.2-0.8NA
us-gaap:IncreaseDecreaseInAccountsReceivable ▂▂▅▁▃▁▃▄▂▂▂▃▂▃▅▁▃▁█▃▃▄▂▃▂▃▃▂▂▄▃-6.01.018.0-9.02.0-10.04.013.0-2.0-4.0-1.06.0-2.05.017.0-7.04.0-10.041.81.92.411.9-2.43.2-3.64.54.0-0.1-2.29.61.9NA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▅▃█▅▇▆▇▇▄▆▆▅▃█▃▂▂▁▂▂▁286.0227.0170.0296.0215.0274.0259.0276.0276.0205.0240.0255.0226.0171.0302.0152.0131.0139.0121.0128.0132.0111.0NANANANANANANANANANA
us-gaap:NetIncomeLoss ▇▁▄▇█▇██▇▇▇▇▆▆▆▄▄▄▄▄▃▄▄▃▃▂▂▂▂▂▂▂225.0-18.0104.0206.0255.0226.0255.0237.0233.0198.0221.0217.0186.0172.0164.099.0103.097.0102.083.173.294.095.052.342.035.434.929.432.128.017.017.3
us-gaap:ProfitLoss ▇▁▄▇█▇██234.0-11.0111.0216.0255.0226.0255.0237.0NANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ███▇▆▆▇▇▇▅▆▇▇█▅███▁▇█▇-3.0-39.0-61.0-157.0-317.0-273.0-156.0-148.0-110.0-533.0-313.0-170.0-152.0-60.0-583.0-88.0-62.0-49.0-1223.0-168.0-73.0-94.0NANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▃▂▃▂▁▅▃▅▃▃▃▃▅▃▃▃█▃▃▃-284.0-192.0-104.0-144.017.0-195.0-472.0397.0-38.0329.0-26.0-136.0-90.0-129.0464.0-63.0-69.0-91.01085.023.0-43.0-47.0NANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

mlp:CommonUnits


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value228228242242242206138
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value225-19.010420625522625523723319822121718617222599103971878273576452423536303027
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.4-7.50.077.7105.884.60.087.888.665.60.0204.7167.667.20.0900.0936.4970.082.337.333.428.431.830.125.023.60.04285.71287.52092.3

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-30
Value9.07.07.010.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.22.80.03.8

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302016-03-312015-03-31
Value234-12.01112162552262552376032
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax83.6-4.80.081.5105.884.60.087.829.921.9

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value181716161717161617181616161621161617151716
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.46.70.06.07.16.40.05.96.56.00.015.114.46.20.0145.5145.5170.06.67.77.3

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value235-11.0112217255227255238234199223217186174166991049710383736095524135352932281717
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax83.9-4.40.081.9105.885.00.088.189.065.90.0204.7167.668.00.0900.0945.5970.045.237.533.629.646.830.124.923.70.04214.31345.82176.90.01029.4

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity

mlp:DakotaAccessLLC


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value12514212194186189
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest53.2-1290.955.836.981.979.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.656.345.739.069.770.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:DakotaAccessLLC0.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1000000.01000000.01000000.001000000.001000000.01000000.01000000.02000000.0002000000.03000000.001000000.001200000.0200000.0400000.0200000.0100000.0100000.0-100000.0200000.0200000.0100000.0200000.0300000.0100000.0200000.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.00.0100.00.0100.0100.0100.0100.00.00.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.00.40.00.40.00.40.40.30.00.00.00.80.00.09.10.00.50.10.20.10.00.1-0.10.10.014.38.323.10.011.8

Interest And Debt Expense

us-gaap:InterestAndDebtExpense

us-gaap:InterestAndDebtExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value323332322829282627272828293030232424219.9119.99.39.29.55.92.11.41.30.50.20.1
Percentage of InterestAndDebtExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.413.10.012.111.610.90.09.610.38.90.026.426.111.70.0209.1218.2240.09.34.55.04.94.65.35.73.90.0200.054.238.50.05.9

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value225-18.0104206255226255237233198221217186172164991039710283739495524235342932281717
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.4-7.10.077.7105.884.60.087.888.665.60.0204.7167.667.20.0900.0936.4970.044.737.433.446.146.830.125.023.60.04200.01337.52153.80.01017.6

us-gaap:NetIncomeLoss dei:LegalEntity

mlp:DakotaAccessLLC


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value12514212194186189
Percentage of NetIncomeLoss55.6-788.958.736.982.379.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.656.345.739.069.770.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:DakotaAccessLLC0.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

mlp:CommonUnits, us-gaap:LimitedPartner


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value213-30.092196216246228
Percentage of NetIncomeLoss94.7166.788.595.195.696.596.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax76.1-11.90.074.080.90.084.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:CommonUnits us-gaap:LimitedPartner0.00.00.00.00.00.00.0

mlp:PreferredUnits, us-gaap:LimitedPartner


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value12121210.010.09.09.0
Percentage of NetIncomeLoss5.3-66.711.54.94.43.53.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.80.03.83.70.03.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:PreferredUnits us-gaap:LimitedPartner0.00.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302016-12-312016-09-302016-06-302016-03-31
Value9.07.07.010.00.00.03.0-3.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.00.00.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.22.80.03.80.00.01.4-1.5

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

mlp:CommonUnits, us-gaap:LimitedPartner


Net
Period End2021-06-302020-06-30
Value209246
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax74.6102.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:CommonUnits us-gaap:LimitedPartner0.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

mlp:CommonUnits, us-gaap:LimitedPartner


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value209-30.0104206255226237159
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax74.6-11.90.077.7105.884.687.860.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:CommonUnits us-gaap:LimitedPartner0.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312015-03-31
Value0-1000000.0-1500000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax0.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.4-1.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:PartnerCapitalComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-31
Value0-1000000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax0.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value234-11.0111216255226255237
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax83.6-4.40.081.5105.884.60.087.8

us-gaap:ProfitLoss mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

mlp:PublicDesignator, mlp:CommonUnits


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value55-8.0245063556367
Percentage of ProfitLoss23.572.721.623.124.724.324.728.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.6-3.20.018.926.120.60.024.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:PublicDesignator mlp:CommonUnits0.00.00.00.00.00.00.00.0

mlp:PublicDesignator, mlp:PreferredUnits


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value12121210.09.010.09.09.0
Percentage of ProfitLoss5.1-109.110.84.63.54.43.53.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.80.03.83.73.70.03.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:PublicDesignator mlp:PreferredUnits0.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:NonpublicDesignator, mlp:CommonUnits, us-gaap:MajorityShareholder


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value158-22.0146183161161
Percentage of ProfitLoss67.5200.067.671.871.267.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax56.4-8.755.175.960.359.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:NonpublicDesignator mlp:CommonUnits us-gaap:MajorityShareholder0.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-30
Value9.07.07.010.0
Percentage of ProfitLoss3.8-63.66.34.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.22.80.03.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value280252265265241267291270263302-296.01061112568.0111110.02282222192042031741681501.70.72.41.30.11.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value280252265265241267291270263302-742.02652542568.0111110.02282222192042031741681501.70.72.41.30.11.7
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0250.7250.0228.8100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues dei:LegalEntity

mlp:DakotaAccessLLC


Revenuesdei:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value198215196169258258
Percentage of Revenues70.785.374.070.196.695.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.785.374.070.196.695.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:DakotaAccessLLC0.00.00.00.00.00.0

us-gaap:Revenues us-gaap:MajorCustomers

mlp:ThirdParty


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value6.07.07.09.05.09.08.08.07.0
Percentage of Revenues2.12.82.63.42.13.42.73.02.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.82.63.42.13.42.73.02.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:ThirdParty0.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ProductOrService

mlp:LeaseRevenue


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value233207253209195218242217214
Percentage of Revenues83.282.195.578.980.981.683.280.481.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax83.282.195.578.980.981.683.280.481.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:LeaseRevenue0.00.00.00.00.00.00.00.00.0

mlp:PipelineServices


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value12110411111797111126121117
Percentage of Revenues43.241.341.944.240.241.643.344.844.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax43.241.341.944.240.241.643.344.844.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:PipelineServices0.00.00.00.00.00.00.00.00.0

mlp:StorageProcessingAndOtherRevenues


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value116109113112111113118108107
Percentage of Revenues41.443.342.642.346.142.340.540.040.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.443.342.642.346.142.340.540.040.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:StorageProcessingAndOtherRevenues0.00.00.00.00.00.00.00.00.0

mlp:Terminals


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value433941363343474139
Percentage of Revenues15.415.515.513.613.716.116.215.214.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.415.515.513.613.716.116.215.214.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:Terminals0.00.00.00.00.00.00.00.00.0

us-gaap:Service


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value474512564649495349454209.010.01121111
Percentage of Revenues16.817.94.521.119.118.416.819.618.614.9-56.63.43.943.8100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.817.94.521.119.118.416.819.618.614.9-141.98.59.043.8100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Service0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:RelatedPartyTransactionsByRelatedParty

srt:AffiliatedEntity


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value274245258256236258283262256296
Percentage of Revenues97.997.297.496.697.996.697.397.097.398.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax97.997.297.496.697.996.697.397.097.398.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax srt:AffiliatedEntity0.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value70017053725872947203699769617190654463535819564355065386533442194168412541092880277226821523147114691454539350342332584578
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value416242004167408739904144412744363928379933103200317331523173244423972497254312221429136811331134114411354671771761771010
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets59.459.557.456.055.459.259.361.760.059.856.956.757.658.559.557.957.560.561.942.451.651.074.477.277.978.186.650.651.453.41.71.8

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value70017053725872947203699769617190654463535819564355065386533442194168412541092880277226821523147114691454539350342332584578
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1521431401111282144147742401161292392632832928794881007083647710513317036675848439434
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.01.91.51.83.15.910.83.71.82.24.24.85.35.52.12.32.12.42.43.02.45.17.29.111.76.719.117.014.775.275.1

us-gaap:AssetsCurrent us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Assets
Period End2020-12-312019-12-312018-12-31
Value671642751
Percentage of AssetsCurrent479.3155.1582.2
Percentage of Assets9.29.212.9
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary0.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value2.03.07.02.07.0922866551302.01.01001511671852.01.01.02.019352048721041378.3433421425421
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.10.00.11.34.19.12.00.00.01.82.73.13.50.00.00.00.00.71.30.73.25.07.19.51.512.310.16.372.872.9

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value2.03.07.02.07.0922866551302.01.01001511671852.01.01242.05017
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.10.00.11.34.19.12.00.00.01.82.73.13.50.00.03.00.03.33.2

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5.03.03.03.04.04.04.04.088905.05.06.03.03.0
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.00.00.00.10.10.10.11.31.40.10.10.10.10.1

Receivables Net Current

us-gaap:ReceivablesNetCurrent

us-gaap:ReceivablesNetCurrent


Receivables
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value10110710688979510510195
Percentage of ReceivablesNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.51.51.21.31.41.51.41.6

us-gaap:ReceivablesNetCurrent us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:LeaseAgreements


Receivables
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-31
Value84898769767487815351495349
Percentage of ReceivablesNetCurrent83.283.282.178.478.477.982.980.255.80.00.00.00.0
Percentage of Assets1.21.31.20.91.11.11.21.10.90.90.91.00.9
Percentage of Assets us-gaap:LeaseAgreements0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Service


Receivables
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value171819192120182041
Percentage of ReceivablesNetCurrent16.816.817.921.621.621.117.119.843.2
Percentage of Assets0.20.30.30.30.30.30.30.30.7
Percentage of Assets us-gaap:Service0.00.00.00.00.00.00.00.00.0

Inventory Raw Materials And Supplies

us-gaap:InventoryRawMaterialsAndSupplies

us-gaap:InventoryRawMaterialsAndSupplies


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value361616141413131313131312131312121212115.55.55.22.52.52.52.32.22.02.02.0
Percentage of InventoryRawMaterialsAndSupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.20.20.20.20.20.20.20.40.60.60.3

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1317117.010.01410.05.09.0112010.010.0129.0
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.10.10.20.10.10.10.20.30.20.20.20.2

us-gaap:PrepaidExpenseAndOtherAssetsCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:Phillips66


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value8.0117.04.06.07.0
Percentage of PrepaidExpenseAndOtherAssetsCurrent61.564.763.657.160.070.0
Percentage of Assets0.10.20.10.10.10.1
Percentage of Assets mlp:Phillips660.00.00.00.00.00.0

Assets Noncurrent

us-gaap:AssetsNoncurrent us-gaap:ConsolidatedEntities

us-gaap:AssetsNoncurrent

us-gaap:VariableInterestEntityPrimaryBeneficiary


Assets
Period End2020-12-312019-12-312018-12-31
Value12884120729561
Percentage of AssetsNoncurrent100.0100.0100.0
Percentage of Assets177.5173.4164.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary0.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value48254725462044994408428741584076399539203840378937543478344734203400199919831926760751738717732514511506214212
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.564.864.164.363.359.663.564.268.769.569.770.370.482.482.782.982.769.471.571.849.951.150.349.4135.8146.7149.1152.536.736.7

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

mlp:CavernsAndRelatedAssets


Property
Period End2020-12-312020-09-302020-06-302019-12-31
Value732742636585
Percentage of PropertyPlantAndEquipmentGross15.215.713.813.3
Percentage of Assets10.110.28.88.4
Percentage of Assets mlp:CavernsAndRelatedAssets0.00.00.00.0

mlp:ProcessingAndRelatedAssets


Property
Period End2020-12-312020-09-302020-06-302019-12-31
Value1063105810591041
Percentage of PropertyPlantAndEquipmentGross22.022.422.923.6
Percentage of Assets14.614.514.715.0
Percentage of Assets mlp:ProcessingAndRelatedAssets0.00.00.00.0

mlp:TerminalsandStorageFacilities


Property
Period End2020-12-312020-09-302020-06-302019-12-31
Value847840779741
Percentage of PropertyPlantAndEquipmentGross17.617.816.916.8
Percentage of Assets11.711.510.810.6
Percentage of Assets mlp:TerminalsandStorageFacilities0.00.00.00.0

us-gaap:BuildingAndBuildingImprovements


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1159594949492929189898888888784888858575730302827271616156.16.2
Percentage of PropertyPlantAndEquipmentGross2.42.02.02.12.12.12.22.22.22.32.32.32.32.52.42.62.62.92.93.03.94.03.83.93.73.13.23.12.82.9
Percentage of Assets1.61.31.31.31.41.31.41.41.51.61.61.61.62.12.02.12.12.02.12.12.02.01.91.95.14.64.74.81.01.1
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value394312444409367266314271216160976147533342273311918012255032548.68.16.43.13.3
Percentage of PropertyPlantAndEquipmentGross8.26.69.69.18.36.27.66.65.44.12.51.61.31.51.01.20.81.76.09.41.73.46.84.57.41.71.61.31.41.6
Percentage of Assets5.44.36.25.85.33.74.84.33.72.81.81.10.91.30.81.00.71.24.36.70.81.73.42.210.12.52.41.90.50.6
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value19191919191919191919191919191919191414146.05.96.05.9175.05.05.04.04.0
Percentage of PropertyPlantAndEquipmentGross0.40.40.40.40.40.40.50.50.50.50.50.50.50.50.60.60.60.70.70.70.80.80.80.82.41.01.01.01.91.9
Percentage of Assets0.30.30.30.30.30.30.30.30.30.30.30.40.40.50.50.50.50.50.50.50.40.40.40.43.21.41.51.50.70.7
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Pipelines


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value151815221452144714241413140514001398138713821377137213521349133813352642632302292141801801651511501503635
Percentage of PropertyPlantAndEquipmentGross31.532.231.432.232.333.033.834.335.035.436.036.336.538.939.139.139.313.213.312.030.228.624.425.122.529.429.529.716.916.9
Percentage of Assets20.920.920.220.720.519.721.522.024.024.625.125.625.732.032.432.432.59.29.58.615.114.612.312.430.643.244.045.46.26.2
Percentage of Assets us-gaap:Pipelines0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value11861150112010891059102910009729439218928648368037777517253253102852682622572522472402362337877
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.315.815.515.615.214.315.315.316.216.316.216.015.719.018.618.217.611.311.210.617.617.817.517.445.868.569.070.113.513.3

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value36393575350034103349325831583104305229992948292529182675267026692675167416721641492489481465485273274273135135
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets50.149.048.648.748.145.348.348.952.453.153.554.354.763.464.164.765.158.160.361.232.333.232.732.089.978.180.282.423.323.3

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value1851851851851851851851851851851851851851851851851851851852.52.52.52.52.52.52.52.52.52.52.52.52.5
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.62.52.52.62.62.72.62.82.93.23.33.43.43.54.44.44.54.50.10.10.10.20.20.20.20.50.70.70.80.40.4

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value444444444545
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.70.70.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-06-302014-03-31
Value495050505052525249515.02.02.02.0240.60.70.710109.50.90.20.1
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.70.70.70.70.70.70.70.80.10.00.00.00.90.00.00.00.70.70.70.20.10.0

us-gaap:OtherAssetsNoncurrent us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:Phillips66


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value464747484844
Percentage of OtherAssetsNoncurrent93.994.094.096.096.084.6
Percentage of Assets0.70.70.60.70.70.6
Percentage of Assets mlp:Phillips660.00.00.00.00.00.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value4854731048875847974828899493039312728311920158.39.21314104.28.0
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.81.01.41.21.11.21.11.11.31.51.80.90.60.70.70.60.70.80.70.70.60.50.60.91.01.91.21.4

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3438272224191619172260606135
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.40.30.30.30.20.30.30.31.01.11.10.7

us-gaap:ContractWithCustomerLiabilityCurrent us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:Phillips66


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value343827222416
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.40.30.30.2
Percentage of Assets mlp:Phillips660.00.00.00.00.00.0

Debt Current

us-gaap:DebtCurrent

us-gaap:DebtCurrent


Debt
Period End2020-12-312019-12-31
Value46525
Percentage of DebtCurrent100.0100.0
Percentage of Assets6.40.4

us-gaap:DebtCurrent us-gaap:BusinessAcquisition, us-gaap:DebtInstrument

mlp:BakkenPipelineAndMSLPAcquisition, us-gaap:MunicipalBonds


Debt
Period End2020-12-31
Value50
Percentage of DebtCurrent10.8
Percentage of Assets0.7
Percentage of Assets mlp:BakkenPipelineAndMSLPAcquisition us-gaap:MunicipalBonds0.0

us-gaap:DebtCurrent us-gaap:CreditFacility, us-gaap:LongtermDebtType

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit


Debt
Period End2020-12-31
Value415
Percentage of DebtCurrent89.2
Percentage of Assets5.7
Percentage of Assets us-gaap:RevolvingCreditFacility us-gaap:LineOfCredit0.0

us-gaap:DebtCurrent us-gaap:DebtInstrument

us-gaap:MunicipalBonds


Debt
Period End2020-12-312019-12-31
Value5075
Percentage of DebtCurrent10.8300.0
Percentage of Assets0.71.1
Percentage of Assets us-gaap:MunicipalBonds0.00.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value629666633553455204199512317188270238210186171135133104111104614337304031331413159.610
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.09.48.77.66.32.92.97.14.83.04.64.23.83.53.23.23.22.52.73.62.21.62.52.02.82.26.24.13.94.61.61.7

us-gaap:LiabilitiesCurrent us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilities
Period End2020-12-312019-12-312018-12-31
Value3816623008
Percentage of LiabilitiesCurrent60.2332.71114.1
Percentage of Assets5.29.551.7
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary0.00.00.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2020-12-31
Value1000000.0
Percentage of OperatingLeaseLiabilityCurrent100.0
Percentage of Assets0.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-03-312014-12-312014-06-302014-03-312013-12-312013-09-30
Value8000000.03000000.03000000.03000000.04000000.03000000.03000000.08000000.02000000.03000000.05000000.02000000.02000000.01000000.02000000.02000000.01000000.01000000.03000000.01100000.0200000.0200000.0100000.0200000.0300000.0300000.0100000.0300000.0400000.0200000.0
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.00.00.00.10.00.00.10.00.00.10.00.00.00.00.00.00.00.10.00.00.00.00.00.00.10.00.10.10.0

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value20121128221210.02818139.02416181521151610.011119.55.16.65.03.42.73.52.62.91.01.1
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.20.20.40.30.20.10.40.30.20.20.40.30.30.30.50.40.40.20.40.40.40.30.40.30.20.51.00.80.90.20.2

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesNoncurrent

us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilities
Period End2020-12-312019-12-312018-12-31
Value46734322496
Percentage of LiabilitiesNoncurrent100.0100.0100.0
Percentage of Assets64.462.18.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary0.00.00.0

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3445344434443443344234913491349031743173299829222921292129202273222723592411
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets49.248.847.547.247.849.950.248.548.549.951.551.853.154.254.753.953.457.258.7

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value3445344434443443344234913491349031743173299829222921292129202273222723572396109111311090109010991099109918
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets49.248.847.547.247.849.950.248.548.549.951.551.853.154.254.753.953.457.158.337.940.840.771.674.874.975.63.3

Debt And Capital Lease Obligations

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:DebtAndCapitalLeaseObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value391039443909378337073516351638153324318830482922294629462945229022522411
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets55.855.953.951.951.550.350.553.150.850.252.451.853.554.755.254.354.058.7

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value889090919393949496974266230.50.60.50.50.5
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.31.21.21.31.31.41.31.51.50.71.20.60.00.00.00.00.1

us-gaap:OtherLiabilitiesNoncurrent us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:Phillips66


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value626364666770
Percentage of OtherLiabilitiesNoncurrent70.570.071.172.572.074.5
Percentage of Assets0.90.90.90.90.91.0
Percentage of Assets mlp:Phillips660.00.00.00.00.00.0

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2020-12-31
Value43
Percentage of OperatingLeaseLiabilityNoncurrent100.0
Percentage of Assets0.6

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value3000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value3000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value3000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value3000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value87
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets1.2

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value444444444545
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.70.70.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value102
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets1.4

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value58
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.8

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-2000000.0-2000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1200000.0-800000.0-800000.0-1500000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302021-03-312020-12-312020-09-30
Value13131913
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-30
Value13131913
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value286227170296215274259276276205240255226171302152131139121128132111
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax102.190.164.2111.789.2102.689.0102.2104.967.9-81.1240.6203.666.83775.01381.81190.91390.053.157.760.354.4

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-3.0-39.0-61.0-157.0-317.0-273.0-156.0-148.0-110.0-533.0-313.0-170.0-152.0-60.0-583.0-88.0-62.0-49.0-1223.0-168.0-73.0-94.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.1-15.5-23.0-59.2-131.5-102.2-53.6-54.8-41.8-176.5105.7-160.4-136.9-23.4-7287.5-800.0-563.6-490.0-536.4-75.7-33.3-46.1

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-284.0-192.0-104.0-144.017-195.0-472.0397-38.0329-26.0-136.0-90.0-129.0464-63.0-69.0-91.0108523-43.0-47.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-101.4-76.2-39.2-54.37.1-73.0-162.2147.0-14.4108.98.8-128.3-81.1-50.45800.0-572.7-627.3-910.0475.910.4-19.6-23.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-1.0-4.05.0-5.0-85.0-194.0-369.0525
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.4-1.61.9-1.9-35.3-72.7-126.8194.4

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-5.02.0-36.027-4.0-3.00.010.01.0-4.03.0111.0-4.0142.0-1.0-1.016-1.4-1.75.92.5-6.4-1.3-3.212-0.9-1.4-1.2-0.8
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-6.01.018-9.02.0-10.04.013-2.0-4.0-1.06.0-2.05.017-7.04.0-10.0411.92.411-2.43.2-3.64.54.0-0.1-2.29.61.9
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

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value286227170296215274259276276205240255226171302152131139121128132111
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax102.190.164.2111.789.2102.689.0102.2104.967.9-81.1240.6203.666.83775.01381.81190.91390.053.157.760.354.4

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value225-18.0104206255226255237233198221217186172164991039710283739495524235342932281717
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.4-7.139.277.7105.884.687.687.888.665.6-74.7204.7167.667.22050.0900.0936.4970.044.737.433.446.146.830.125.023.62052.94200.01337.52153.817000.01017.6

us-gaap:NetIncomeLoss dei:LegalEntity

mlp:DakotaAccessLLC


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value12514212194186189
Percentage of NetIncomeLoss55.6-788.958.736.982.379.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax44.656.345.739.069.770.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:DakotaAccessLLC0.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

mlp:CommonUnits, us-gaap:LimitedPartner


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value213-30.092196216246228
Percentage of NetIncomeLoss94.7166.788.595.195.696.596.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax76.1-11.934.774.080.984.584.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:CommonUnits us-gaap:LimitedPartner0.00.00.00.00.00.00.0

mlp:PreferredUnits, us-gaap:LimitedPartner


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value12121210.010.09.09.0
Percentage of NetIncomeLoss5.3-66.711.54.94.43.53.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.84.53.83.73.13.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:PreferredUnits us-gaap:LimitedPartner0.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value234-11.0111216255226255237
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax83.6-4.441.981.5105.884.687.687.8

us-gaap:ProfitLoss mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

mlp:PublicDesignator, mlp:CommonUnits


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value55-8.0245063556367
Percentage of ProfitLoss23.572.721.623.124.724.324.728.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.6-3.29.118.926.120.621.624.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:PublicDesignator mlp:CommonUnits0.00.00.00.00.00.00.00.0

mlp:PublicDesignator, mlp:PreferredUnits


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value12121210.09.010.09.09.0
Percentage of ProfitLoss5.1-109.110.84.63.54.43.53.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.34.84.53.83.73.73.13.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:PublicDesignator mlp:PreferredUnits0.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:NonpublicDesignator, mlp:CommonUnits, us-gaap:MajorityShareholder


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value158-22.0146183161161
Percentage of ProfitLoss67.5200.067.671.871.267.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax56.4-8.755.175.960.359.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax mlp:NonpublicDesignator mlp:CommonUnits us-gaap:MajorityShareholder0.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-30
Value9.07.07.010.0
Percentage of ProfitLoss3.8-63.66.34.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.22.82.63.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-3.0-39.0-61.0-157.0-317.0-273.0-156.0-148.0-110.0-533.0-313.0-170.0-152.0-60.0-583.0-88.0-62.0-49.0-1223.0-168.0-73.0-94.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.1-15.5-23.0-59.2-131.5-102.2-53.6-54.8-41.8-176.5105.7-160.4-136.9-23.4-7287.5-800.0-563.6-490.0-536.4-75.7-33.3-46.1

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-284.0-192.0-104.0-144.017-195.0-472.0397-38.0329-26.0-136.0-90.0-129.0464-63.0-69.0-91.0108523-43.0-47.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-101.4-76.2-39.2-54.37.1-73.0-162.2147.0-14.4108.98.8-128.3-81.1-50.45800.0-572.7-627.3-910.0475.910.4-19.6-23.0

mlp:AdministrativeFeesExpenseByMonth us-gaap:CounterpartyName, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:TypeOfArrangement

mlp:AdministrativeFeesExpenseByMonth

mlp:Phillips66, us-gaap:MajorityShareholder, mlp:AmendedOmnibusAgreement


Administrative
Period End2021-06-302021-03-312020-12-31
Value08000000.00
Percentage of AdministrativeFeesExpenseByMonth0.0100.00.0

mlp:AvailableCashDistributedOrToBeDistributed

mlp:AvailableCashDistributedOrToBeDistributed


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value211212212210209209209206186
Percentage of AvailableCashDistributedOrToBeDistributed100.0100.0100.0100.0100.0100.0100.0100.0100.0

mlp:AvailableCashDistributedOrToBeDistributed us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

mlp:CommonUnits, us-gaap:LimitedPartner


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value199200200200200199200197107
Percentage of AvailableCashDistributedOrToBeDistributed94.394.394.395.295.795.295.795.657.5

mlp:PreferredUnits, us-gaap:LimitedPartner


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value12121210.09.010.09.09.09.0
Percentage of AvailableCashDistributedOrToBeDistributed5.75.75.74.84.34.84.34.44.8

mlp:CapitalExpendituresAndInvestments

mlp:CapitalExpendituresAndInvestments


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6378114195365236171165
Percentage of CapitalExpendituresAndInvestments100.0100.0100.0100.0100.0100.0100.0100.0

mlp:CapitalExpendituresCashAndNoncash

mlp:CapitalExpendituresCashAndNoncash


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6158120184377234175161
Percentage of CapitalExpendituresCashAndNoncash100.0100.0100.0100.0100.0100.0100.0100.0

mlp:CashContributionsFromToParentOther

mlp:CashContributionsFromToParentOther


Cash
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-30
Value0-2000000.00000
Percentage of CashContributionsFromToParentOther0.0100.00.00.00.00.0

mlp:ChangeInCapitalExpenditureAccruals

mlp:ChangeInCapitalExpenditureAccruals


Change
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value-2000000.0-20000000.0-11000000.012000000.0-2000000.0
Percentage of ChangeInCapitalExpenditureAccruals100.0100.0100.0100.0100.0

mlp:CostAndExpenses

mlp:CostAndExpenses


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value188387278177175177177173167
Percentage of CostAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0

mlp:EntitiesUnderCommonControlCashPaymentAssignedToAssetsReceived

mlp:EntitiesUnderCommonControlCashPaymentAssignedToAssetsReceived


Entities
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.075
Percentage of EntitiesUnderCommonControlCashPaymentAssignedToAssetsReceived0.00.00.0100.0

mlp:GainLossFromEquityInterestTransfer

mlp:GainLossFromEquityInterestTransfer


Gain
Period End2020-12-312020-09-302020-06-302019-06-30
Value0.00.0840.0
Percentage of GainLossFromEquityInterestTransfer0.00.0100.00.0

mlp:NetIncomeLossAllocatedToPreferredUnitholdersRedeemable

mlp:NetIncomeLossAllocatedToPreferredUnitholdersRedeemable


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value12121210.09.010.09.09.09.0
Percentage of NetIncomeLossAllocatedToPreferredUnitholdersRedeemable100.0100.0100.0100.0100.0100.0100.0100.0100.0

mlp:NetIncomeLossAttributableToPartners

mlp:NetIncomeLossAttributableToPartners


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value104206255226255237233198
Percentage of NetIncomeLossAttributableToPartners100.0100.0100.0100.0100.0100.0100.0100.0

mlp:NoncontrollingInterestIncreaseFromContributions

mlp:NoncontrollingInterestIncreaseFromContributions


Noncontrolling
Period End2020-12-312020-09-30
Value03000000.0
Percentage of NoncontrollingInterestIncreaseFromContributions0.0100.0

mlp:NoncontrollingInterestIncreaseFromContributions us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Noncontrolling
Period End2020-12-312020-09-30
Value03000000.0
Percentage of NoncontrollingInterestIncreaseFromContributions0.0100.0

mlp:NoncontrollingInterestIncreaseFromTransferOfEquityInterest

mlp:NoncontrollingInterestIncreaseFromTransferOfEquityInterest


Noncontrolling
Period End2020-12-312020-09-302020-06-30
Value0.00.0305
Percentage of NoncontrollingInterestIncreaseFromTransferOfEquityInterest0.00.0100.0

mlp:NoncontrollingInterestIncreaseFromTransferOfEquityInterest us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Noncontrolling
Period End2020-12-312020-09-302020-06-30
Value0.00.0305
Percentage of NoncontrollingInterestIncreaseFromTransferOfEquityInterest0.00.0100.0

mlp:OtherComprehensiveIncomeLossNonSponsoredDefinedBenefitPlansNetOfTax

mlp:OtherComprehensiveIncomeLossNonSponsoredDefinedBenefitPlansNetOfTax


Other
Period End2021-06-302021-03-312020-06-302019-06-30
Value0-1000000.000
Percentage of OtherComprehensiveIncomeLossNonSponsoredDefinedBenefitPlansNetOfTax0.0100.00.00.0

mlp:PartnersCapitalAccountPublicSaleOfUnitsBrokersCommissions us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:SubsidiarySaleOfStock

mlp:PartnersCapitalAccountPublicSaleOfUnitsBrokersCommissions

mlp:CommonUnits, mlp:AtTheMarketOfferingProgram


Partners
Period End2020-12-31
Value0
Percentage of PartnersCapitalAccountPublicSaleOfUnitsBrokersCommissions0.0

mlp:PartnersCapitalAccountPublicSaleOfUnitsOtherCosts us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:SubsidiarySaleOfStock

mlp:PartnersCapitalAccountPublicSaleOfUnitsOtherCosts

mlp:CommonUnits, mlp:AtTheMarketOfferingProgram


Partners
Period End2020-12-31
Value0
Percentage of PartnersCapitalAccountPublicSaleOfUnitsOtherCosts0.0

mlp:PartnersCapitalAccountUnitsAmountAuthorized us-gaap:SubsidiarySaleOfStock

mlp:PartnersCapitalAccountUnitsAmountAuthorized

mlp:AtTheMarketOfferingProgram


Partners
Period End2021-03-31
Value750
Percentage of PartnersCapitalAccountUnitsAmountAuthorized100.0

mlp:PartnersCapitalAccountUnitsAmountAuthorizedPerProgram us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:SubsidiarySaleOfStock

mlp:PartnersCapitalAccountUnitsAmountAuthorizedPerProgram

mlp:CommonUnits, mlp:AtTheMarketOfferingProgram


Partners
Period End2021-03-31
Value250
Percentage of PartnersCapitalAccountUnitsAmountAuthorizedPerProgram100.0

mlp:PartnersCapitalAccountValueRepurchaseOfPreferredUnits

mlp:PartnersCapitalAccountValueRepurchaseOfPreferredUnits


Partners
Period End2021-06-30
Value24
Percentage of PartnersCapitalAccountValueRepurchaseOfPreferredUnits100.0

mlp:PartnersCapitalAccountValueRepurchaseOfPreferredUnits mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

mlp:PublicDesignator, mlp:CommonUnits


Partners
Period End2021-06-30
Value1.0
Percentage of PartnersCapitalAccountValueRepurchaseOfPreferredUnits4.2

mlp:PublicDesignator, mlp:PreferredUnits


Partners
Period End2021-06-30
Value20
Percentage of PartnersCapitalAccountValueRepurchaseOfPreferredUnits83.3

mlp:PartnersCapitalAccountValueRepurchaseOfPreferredUnits mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:NonpublicDesignator, mlp:CommonUnits, us-gaap:MajorityShareholder


Partners
Period End2021-06-30
Value3.0
Percentage of PartnersCapitalAccountValueRepurchaseOfPreferredUnits12.5

mlp:PaymentsToFundCashCalls dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

mlp:PaymentsToFundCashCalls

mlp:ThirdParty, mlp:GrayOakPipelineLLC


Payments
Period End2020-12-312020-09-30
Value-3.03.0
Percentage of PaymentsToFundCashCalls100.0100.0

mlp:ProceedsFromThirdPartyFinancingActivities

mlp:ProceedsFromThirdPartyFinancingActivities


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.00.028121.00.0
Percentage of ProceedsFromThirdPartyFinancingActivities0.00.0100.0100.0100.00.0

mlp:RevenuesAndOtherIncome

mlp:RevenuesAndOtherIncome


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value423376390394430404432411401423
Percentage of RevenuesAndOtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

mlp:TaxesOtherThanIncomeTaxesIncludingExciseTaxes

mlp:TaxesOtherThanIncomeTaxesIncludingExciseTaxes


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value1110.010.09.010.0119.010.09.0
Percentage of TaxesOtherThanIncomeTaxesIncludingExciseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2021-06-302021-03-31
Value0.0198
Percentage of AssetImpairmentCharges0.0100.0

us-gaap:AssetImpairmentCharges us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

mlp:LibertyPipelineLLC


Asset
Period End2021-03-31
Value198
Percentage of AssetImpairmentCharges100.0

us-gaap:DebtInstrumentPeriodicPaymentInterest dei:LegalEntity

us-gaap:DebtInstrumentPeriodicPaymentInterest

mlp:DakotaAccessandETCO


Debt
Period End2020-09-30
Value25
Percentage of DebtInstrumentPeriodicPaymentInterest100.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value343439353130323029293030292834302626521514135.75.75.35.14.74.03.93.61.51.6
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DilutiveSecurities us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

us-gaap:DilutiveSecurities

mlp:CommonUnits, us-gaap:LimitedPartner


Dilutive
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value1210.09.010.09.06.0
Percentage of DilutiveSecurities100.0100.0100.0100.0100.0100.0

us-gaap:DistributionMadeToLimitedPartnerCashDistributionsDeclared us-gaap:DistributionsMadeToMemberOrLimitedPartnerByDistributionType, us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:DistributionMadeToLimitedPartnerCashDistributionsDeclared

us-gaap:CashDistribution, mlp:PreferredUnits


Distribution
Period End2021-06-30
Value12
Percentage of DistributionMadeToLimitedPartnerCashDistributionsDeclared100.0

us-gaap:DistributionMadeToLimitedPartnerCashDistributionsDeclared us-gaap:StatementScenario, us-gaap:DistributionsMadeToMemberOrLimitedPartnerByDistributionType, us-gaap:LimitedPartnersCapitalAccountByClass

srt:ScenarioForecast, us-gaap:CashDistribution, mlp:CommonUnits


Distribution
Period End2021-07-20
Value199
Percentage of DistributionMadeToLimitedPartnerCashDistributionsDeclared0.0

us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment

mlp:Phillips66PartnersTerminalLLC


Equity
Period End2020-12-31
Value50
Percentage of EquityMethodInvestmentOtherThanTemporaryImpairment100.0

mlp:STACKPipelineLLC


Equity
Period End2020-12-31
Value46
Percentage of EquityMethodInvestmentOtherThanTemporaryImpairment92.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value14212412412910413614013913711912311810098112413733253329242525206.1
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

mlp:BakkenPipeline


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value384449373057595858
Percentage of IncomeLossFromEquityMethodInvestments26.835.539.528.728.841.942.141.742.3

mlp:BayouBridgePipelineLLC


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value10.07.08.06.07.010.010.09.08.0
Percentage of IncomeLossFromEquityMethodInvestments7.05.66.54.76.77.47.16.55.8

mlp:DcpSandHillsPipelineLlc


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value332727333741373938
Percentage of IncomeLossFromEquityMethodInvestments23.221.821.825.635.630.126.428.127.7

mlp:DcpSouthernHillsPipelineLlc


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value121210.01110.0119.010.011
Percentage of IncomeLossFromEquityMethodInvestments8.59.78.18.59.68.16.47.28.0

mlp:ExplorerPipelineCompany


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value113.03.06.04.07.07.01211
Percentage of IncomeLossFromEquityMethodInvestments7.72.42.44.73.85.15.08.68.0

mlp:GrayOakPipelineLLC


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value26211930145.05.0-2.00.0
Percentage of IncomeLossFromEquityMethodInvestments18.316.915.323.313.53.73.6-1.40.0

mlp:ParadigmPipelineLLC


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value6.05.05.04.02.04.04.04.03.0
Percentage of IncomeLossFromEquityMethodInvestments4.24.04.03.11.92.92.92.92.2

mlp:Phillips66PartnersTerminalLLC


Income
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value1.00.0-1.0-1.07.06.06.0
Percentage of IncomeLossFromEquityMethodInvestments0.70.0-0.8-1.05.04.34.4

mlp:STACKPipelineLLC


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.01.00.01.01.01.02.03.02.0
Percentage of IncomeLossFromEquityMethodInvestments0.00.80.00.81.00.71.42.21.5

mlp:SouthTexasGatewayTerminalLLC


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-06-30
Value5.04.03.02.00.00.0
Percentage of IncomeLossFromEquityMethodInvestments3.53.22.41.60.00.0

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-7.05.02.00.0-5.0-4.010.0-4.0-1.0-2.00.0-2.0-1.08.03.00.0-6.04.0-4.82.71.7-0.6-2.7-0.9-2.25.8
Percentage of IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-4.0115.0-2.05.03.0-1.02.0-6.0-40.01.0-1.01.02910.01.0
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInInterestPayableNet

us-gaap:IncreaseDecreaseInInterestPayableNet


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value4.0-4.04.0-11.04.08.0-3.05.0-5.04.0-4.04.0-2.04.02.0-1.02.021-11.75.8-11.210.0-9.110.02.30.7-0.41.20.4
Percentage of IncreaseDecreaseInInterestPayableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherAccruedLiabilities

us-gaap:IncreaseDecreaseInOtherAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value141.05.0112.0-18.010.06.02.0-13.08.0-1.02.0-6.06.0-4.02.0-2.50.31.71.5-1.30.03.8-0.1-0.5
Percentage of IncreaseDecreaseInOtherAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312014-03-312013-12-31
Value-4.06.04.0-3.0-4.04.05.0-3.0-3.0-9.010.01.0-3.03.06.0-2.02.0-1.00.02.00.0-1.2-0.8
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0

us-gaap:IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories

us-gaap:IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories


Increase
Period End2020-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-03-31
Value000000001000000.01000000.00200000.0800000.0-100000.0-300000.0500000.0100000.00-100000.0
Percentage of IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories0.00.00.00.00.00.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:NetIncomeLossAllocatedToLimitedPartners

us-gaap:NetIncomeLossAllocatedToLimitedPartners


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value213-30.0921962462162462281531191441441211101055666656957463650403329322730171611
Percentage of NetIncomeLossAllocatedToLimitedPartners100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted

us-gaap:NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.40.851.050.931.061.151.150.921.091.10.940.870.830.510.610.60.650.570.510.44
Percentage of NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted us-gaap:LimitedPartnersCapitalAccountByClass

mlp:CommonUnits


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.91-0.130.430.851.050.931.041.151.15
Percentage of NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted0.00.0107.5100.0100.0100.098.1100.0100.0

us-gaap:NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax

us-gaap:NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.40.861.070.951.081.181.230.961.161.170.990.910.860.510.610.60.650.570.510.44
Percentage of NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax us-gaap:LimitedPartnersCapitalAccountByClass

mlp:CommonUnits


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.91-0.130.410.861.070.951.061.181.23
Percentage of NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax0.00.0102.5100.0100.0100.098.1100.0100.0

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value9395858584889091851398884859713369576213925272214151714151213117.77.5
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherExpenses

us-gaap:OtherExpenses


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-30
Value005000000.02000000.02000000.000001000000.001000000.0900000.0100000.0000100000.0
Percentage of OtherExpenses0.00.0100.0100.0100.00.00.00.00.0100.00.0100.0100.0100.00.00.00.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-1000000.00-5000000.0-2000000.0-2000000.04000000.0-2000000.0-10000000.0-1000000.00-5000000.00-3000000.0-4000000.0-2000000.0-3000000.0400000.0-200000.0-3900000.0-300000.0-600000.0-1200000.0100000.0-600000.00-600000.0-100000.0-100000.00
Percentage of OtherNoncashIncomeExpense100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0

us-gaap:PartnersCapitalAccountDistributions

us-gaap:PartnersCapitalAccountDistributions


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value2122122102092092092061861841801691581481381211049588826955514641362925232116
Percentage of PartnersCapitalAccountDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PartnersCapitalAccountDistributions mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

mlp:PublicDesignator, mlp:CommonUnits


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value525152515151504947
Percentage of PartnersCapitalAccountDistributions24.524.124.824.424.424.424.326.325.5

mlp:PublicDesignator, mlp:PreferredUnits


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value121210.09.010.09.09.09.010.0
Percentage of PartnersCapitalAccountDistributions5.75.74.84.34.84.34.44.85.4

us-gaap:PartnersCapitalAccountDistributions mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:NonpublicDesignator, mlp:CommonUnits, us-gaap:MajorityShareholder


Partners
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value1481491491481495858
Percentage of PartnersCapitalAccountDistributions69.870.371.370.871.331.231.5

us-gaap:PartnersCapitalAccountPublicSaleOfUnitsNetOfOfferingCosts us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:SubsidiarySaleOfStock

us-gaap:PartnersCapitalAccountPublicSaleOfUnitsNetOfOfferingCosts

mlp:CommonUnits, mlp:AtTheMarketOfferingProgram


Partners
Period End2020-12-312020-09-302019-12-312019-09-302019-06-30
Value0.00.0409110.0
Percentage of PartnersCapitalAccountPublicSaleOfUnitsNetOfOfferingCosts0.00.0100.0100.0100.0

us-gaap:PartnersCapitalAccountSaleOfUnits

us-gaap:PartnersCapitalAccountSaleOfUnits


Partners
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-09-302015-06-302015-03-31
Value0.00.00.02.0409110.0321447589.010330.013140-0.63020.00.0383
Percentage of PartnersCapitalAccountSaleOfUnits0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.0100.0

us-gaap:PartnersCapitalAccountSaleOfUnits mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

mlp:PublicDesignator, mlp:CommonUnits


Partners
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0.00.00.02.0409110.0
Percentage of PartnersCapitalAccountSaleOfUnits0.00.00.0100.0100.0100.0100.0

us-gaap:PartnersCapitalOther

us-gaap:PartnersCapitalOther


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302014-12-312014-09-302014-06-302014-03-31
Value1.0-1.02.0-3.09.0-8.0-1.03.0-4.00.05.02.00.00.00.04.0
Percentage of PartnersCapitalOther100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.0100.0

us-gaap:PartnersCapitalOther mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:NonpublicDesignator, mlp:CommonUnits, us-gaap:MajorityShareholder


Partners
Period End2021-06-302021-03-312020-09-302020-06-30
Value1.0-1.0-3.09.0
Percentage of PartnersCapitalOther100.0100.0100.0100.0

us-gaap:PaymentsForRepurchaseOfPreferredStockAndPreferenceStock mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:PaymentsForRepurchaseOfPreferredStockAndPreferenceStock

mlp:PublicDesignator, mlp:PreferredUnits


Payments
Period End2021-06-29
Value24
Percentage of PaymentsForRepurchaseOfPreferredStockAndPreferenceStock100.0

us-gaap:PaymentsOfCapitalDistribution mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:PaymentsOfCapitalDistribution

mlp:PublicDesignator, mlp:CommonUnits


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value5251525151515049
Percentage of PaymentsOfCapitalDistribution100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfCapitalDistribution mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:NonpublicDesignator, mlp:CommonUnits, us-gaap:MajorityShareholder


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value14814914914814958
Percentage of PaymentsOfCapitalDistribution284.6292.2292.2290.2292.2118.4

us-gaap:PaymentsOfCapitalDistribution us-gaap:LimitedPartnersCapitalAccountByClass

mlp:PreferredUnits


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value121210.09.010.09.09.09.0
Percentage of PaymentsOfCapitalDistribution23.123.519.217.619.617.618.018.4

us-gaap:PaymentsToMinorityShareholders

us-gaap:PaymentsToMinorityShareholders


Payments
Period End2021-06-302021-03-312020-12-31
Value131319
Percentage of PaymentsToMinorityShareholders100.0100.0100.0

us-gaap:PreferredStockRedemptionPremium us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

us-gaap:PreferredStockRedemptionPremium

mlp:CommonUnits, us-gaap:LimitedPartner


Preferred
Period End2021-06-30
Value4000000.0
Percentage of PreferredStockRedemptionPremium100.0

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value38395338483815171520156.08.01424119.08.05.63.03.93.53.83.73.80.7
Percentage of ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfCommonLimitedPartnersUnits

us-gaap:ProceedsFromIssuanceOfCommonLimitedPartnersUnits


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value0.00.00.02.0369110.0321447589.02970.013140-0.13056770.00.00.0
Percentage of ProceedsFromIssuanceOfCommonLimitedPartnersUnits0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ProceedsFromIssuanceOfDebt

us-gaap:ProceedsFromIssuanceOfDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value15450125752150.00.0898135725590850.00.0625280391712169025012056-501.01483231198
Percentage of ProceedsFromIssuanceOfDebt100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMinorityShareholders

us-gaap:ProceedsFromMinorityShareholders


Proceeds
Period End2020-12-31
Value0
Percentage of ProceedsFromMinorityShareholders0.0

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty


Related
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value47584846424855485010553465065101312928831511127.99.88.27.87.87.97.77.57.56.44.8
Percentage of RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty

us-gaap:RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty


Related
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value161516152117181416171515151520151415366.36.37.35.95.25.65.57.14.54.85.57.13.94.1
Percentage of RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfDebt

us-gaap:RepaymentsOfDebt


Repayments
Period End2021-03-312020-03-312019-03-312018-03-312017-03-312016-03-312015-03-31
Value4150.05850.076585498
Percentage of RepaymentsOfDebt100.00.0100.00.0100.0100.0100.0

us-gaap:RepaymentsOfDebt dei:LegalEntity

mlp:GrayOakPipelineLLC


Repayments
Period End2020-09-15
Value1379
Percentage of RepaymentsOfDebt0.0

us-gaap:RepaymentsOfDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

mlp:TaxExemptBondsDue2021, mlp:TaxExemptBonds


Repayments
Period End2021-04-01
Value25
Percentage of RepaymentsOfDebt0.0

us-gaap:RepaymentsOfDebt us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:MunicipalBonds, us-gaap:SubsequentEvent


Repayments
Period End2021-04-01
Value25
Percentage of RepaymentsOfDebt0.0

us-gaap:ResultsOfOperationsRevenueOther

us-gaap:ResultsOfOperationsRevenueOther


Results
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.01.00.01.01.01.02.01.02.0
Percentage of ResultsOfOperationsRevenueOther100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

mlp:PublicDesignator, mlp:PreferredUnits


Stock
Period End2021-06-29
Value20
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0

us-gaap:UndistributedEarnings

us-gaap:UndistributedEarnings


Undistributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value14-230.0-108.0-4.04617463147144148282424-22.0-1.02.0136.10.5-1.37.14.18.2-2.80.80.8
Percentage of UndistributedEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarnings us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount

mlp:CommonUnits, us-gaap:LimitedPartner


Undistributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value14-230.0-108.0-4.04617463146
Percentage of UndistributedEarnings100.0100.0100.0100.0100.0100.0100.0100.097.9

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic


Undistributed
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value14-230.0-4.04617314714482824221.0-2.0-0.62.33.2-6.1-0.51.3
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageLimitedPartnershipUnitsOutstanding us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:WeightedAverageLimitedPartnershipUnitsOutstanding

mlp:CommonUnits


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2282280.00222822822820192124
Percentage of WeightedAverageLimitedPartnershipUnitsOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageLimitedPartnershipUnitsOutstandingDiluted us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:WeightedAverageLimitedPartnershipUnitsOutstandingDiluted

mlp:CommonUnits


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2282280.00224224224220206138
Percentage of WeightedAverageLimitedPartnershipUnitsOutstandingDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

mlp:CommonUnits


Weighted
Period End2020-09-302020-06-302020-03-312019-09-302019-06-30
Value1313131313
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0

mlp:AssetRetirementObligationAndAccrualForEnvironmentalLossContingencies

mlp:AssetRetirementObligationAndAccrualForEnvironmentalLossContingencies


Asset
Period End2020-12-312019-12-31
Value1314
Percentage of AssetRetirementObligationAndAccrualForEnvironmentalLossContingencies100.0100.0

mlp:AssetRetirementObligationsAndAccruedEnvironmentalCost

mlp:AssetRetirementObligationsAndAccruedEnvironmentalCost


Asset
Period End2020-12-312019-12-31
Value1213
Percentage of AssetRetirementObligationsAndAccruedEnvironmentalCost100.0100.0

mlp:EffectiveOwnershipInterestPercentage us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

mlp:EffectiveOwnershipInterestPercentage

mlp:GrayOakPipelineLLC


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value42.2542.2542.2542.250.4225
Percentage of EffectiveOwnershipInterestPercentage100.0100.0100.0100.0100.0

mlp:LessorOperatingLeasePaymentToBeReceivedAfterYearFour

mlp:LessorOperatingLeasePaymentToBeReceivedAfterYearFour


Lessor
Period End2021-06-302021-03-312020-09-30
Value129712971389
Percentage of LessorOperatingLeasePaymentToBeReceivedAfterYearFour100.0100.0100.0

us-gaap:AccrualForEnvironmentalLossContingencies

us-gaap:AccrualForEnvironmentalLossContingencies


Accrual
Period End2020-12-312019-12-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312013-12-31
Value2000000.03000000.02000000.01000000.02000000.02000000.02000000.02000000.04000000.03400000.0
Percentage of AccrualForEnvironmentalLossContingencies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligation


Asset
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value11111110.09.03.43.50.42.0
Percentage of AssetRetirementObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:CreditFacility

us-gaap:DebtInstrumentCarryingAmount

us-gaap:RevolvingCreditFacility


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312017-12-312016-12-31
Value154504152902150.00.0210
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.00.00.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument

us-gaap:MunicipalBonds


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value50505050757575757575751001001000.0
Percentage of DebtInstrumentCarryingAmount11.112.017.223.30.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument, us-gaap:LongtermDebtType

mlp:TermLoanDueApril2022, us-gaap:LoansPayable


Debt
Period End2021-06-30
Value450
Percentage of DebtInstrumentCarryingAmount3000.0

us-gaap:DebtInstrumentFairValue us-gaap:DebtInstrument, us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DebtInstrumentFairValue

mlp:MunicipalBondsAndLineOfCredits, us-gaap:FairValueInputsLevel2


Debt
Period End2020-12-312019-12-31
Value46575
Percentage of DebtInstrumentFairValue100.0100.0

us-gaap:MunicipalBonds, us-gaap:FairValueInputsLevel2


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value50046534026575757547534020075100100100
Percentage of DebtInstrumentFairValue0.0100.00.00.00.0100.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrumentFairValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:LongtermDebtType

us-gaap:FairValueInputsLevel2, us-gaap:SeniorNotes


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value3827367937523567368530833650392729622847266027652723281529182147
Percentage of DebtInstrumentFairValue0.00.0806.90.00.00.04866.70.00.00.00.00.00.00.00.00.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:CreditFacility

us-gaap:DebtInstrumentInterestRateEffectivePercentage

us-gaap:RevolvingCreditFacility


Debt
Period End2020-12-31
Value1.397
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:DebtInstrument

us-gaap:MunicipalBonds


Debt
Period End2020-12-31
Value0.36
Percentage of DebtInstrumentInterestRateEffectivePercentage25.8

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value303131323334343526272728292930222323248.69.3
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtLongtermAndShorttermCombinedAmount

us-gaap:DebtLongtermAndShorttermCombinedAmount


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value394039753940381537403550355038503350321530752975
Percentage of DebtLongtermAndShorttermCombinedAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312013-12-312013-09-30
Value10000000.09000000.07000000.05000000.02000000.0100000.0100000.0
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0

us-gaap:DueFromRelatedPartiesCurrent

us-gaap:DueFromRelatedPartiesCurrent


Due
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312014-06-302014-03-312013-12-312013-09-30
Value9610410385939110197901824119.4
Percentage of DueFromRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DueToRelatedPartiesCurrent

us-gaap:DueToRelatedPartiesCurrent


Due
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value192019171824191922
Percentage of DueToRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity

mlp:BakkenPipeline


Equity
Period End2020-12-31
Value48
Percentage of EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity100.0

mlp:DcpSouthernHillsPipelineLlc


Equity
Period End2020-12-31
Value-88.0
Percentage of EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity-183.3

mlp:ExplorerPipelineCompany


Equity
Period End2020-12-31
Value71
Percentage of EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity147.9

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestmentOwnershipPercentage

mlp:BakkenPipeline


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value25.025.025.025.00.25
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0100.0

mlp:BayouBridgePipelineLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value40.040.040.040.00.4
Percentage of EquityMethodInvestmentOwnershipPercentage160.0160.0160.0160.0160.0

mlp:DcpSandHillsPipelineLlc


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value33.3433.3433.3433.340.3334
Percentage of EquityMethodInvestmentOwnershipPercentage133.4133.4133.4133.4133.4

mlp:DcpSouthernHillsPipelineLlc


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value33.3433.3433.3433.340.3334
Percentage of EquityMethodInvestmentOwnershipPercentage133.4133.4133.4133.4133.4

mlp:ExplorerPipelineCompany


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value21.9421.9421.9421.940.2194
Percentage of EquityMethodInvestmentOwnershipPercentage87.887.887.887.887.8

mlp:GrayOakPipelineLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-02-28
Value65.065.065.065.00.650.65
Percentage of EquityMethodInvestmentOwnershipPercentage260.0260.0260.0260.0260.00.0

mlp:LibertyPipelineLLC


Equity
Period End2021-04-302021-03-312020-12-312020-09-302020-06-30
Value50.050.050.050.00.5
Percentage of EquityMethodInvestmentOwnershipPercentage0.0200.0200.0200.0200.0

mlp:ParadigmPipelineLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value50.050.050.050.00.5
Percentage of EquityMethodInvestmentOwnershipPercentage200.0200.0200.0200.0200.0

mlp:Phillips66PartnersTerminalLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value70.070.070.070.00.7
Percentage of EquityMethodInvestmentOwnershipPercentage280.0280.0280.0280.0280.0

mlp:STACKPipelineLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value50.050.050.050.00.5
Percentage of EquityMethodInvestmentOwnershipPercentage200.0200.0200.0200.0200.0

mlp:SouthTexasGatewayTerminalLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302018-04-30
Value25.025.025.025.00.2525.0
Percentage of EquityMethodInvestmentOwnershipPercentage100.0100.0100.0100.0100.00.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value296230293244337333403136296129212912289724482215210419861932126512121176114211031007967944858835800
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

mlp:BakkenPipeline


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value577575577578588592
Percentage of EquityMethodInvestments19.519.017.817.117.620.0

mlp:BayouBridgePipelineLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value280281288292293294
Percentage of EquityMethodInvestments9.59.38.98.78.89.9

mlp:DcpSandHillsPipelineLlc


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value580585582586595595
Percentage of EquityMethodInvestments19.619.317.917.417.820.1

mlp:DcpSouthernHillsPipelineLlc


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value214217217215218215
Percentage of EquityMethodInvestments7.27.26.76.46.57.3

mlp:ExplorerPipelineCompany


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value84899298100105
Percentage of EquityMethodInvestments2.82.92.82.93.03.5

mlp:GrayOakPipelineLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value833843860896896759
Percentage of EquityMethodInvestments28.127.826.526.626.825.6

mlp:LibertyPipelineLLC


Equity
Period End2020-12-312020-06-302019-12-31
Value2412020.0
Percentage of EquityMethodInvestments7.46.00.0

mlp:ParadigmPipelineLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value139140141141142143
Percentage of EquityMethodInvestments4.74.64.34.24.34.8

mlp:Phillips66PartnersTerminalLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value161515666670
Percentage of EquityMethodInvestments0.50.50.52.02.02.4

mlp:STACKPipelineLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value636364110111114
Percentage of EquityMethodInvestments2.12.12.03.33.33.9

mlp:SouthTexasGatewayTerminalLLC


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value17617516715212974
Percentage of EquityMethodInvestments5.95.85.14.53.92.5

us-gaap:GuaranteeObligationsCurrentCarryingValue us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:GuaranteeObligationsCurrentCarryingValue

mlp:LibertyPipelineLLC


Guarantee
Period End2020-09-30
Value13
Percentage of GuaranteeObligationsCurrentCarryingValue100.0

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrent


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value353935393446423437323632363234292728265.1165.7155.1144.21.9
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseDepositLiability

us-gaap:LeaseDepositLiability


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value5358494447434279
Percentage of LeaseDepositLiability100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseDepositLiability us-gaap:ProductOrService

mlp:LeaseRevenue


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value515445414441
Percentage of LeaseDepositLiability96.293.191.893.293.697.6

us-gaap:Service


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value2.04.04.03.03.02.01.06.0
Percentage of LeaseDepositLiability3.86.98.26.86.44.72.47.6

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value3000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceived

us-gaap:LessorOperatingLeasePaymentsToBeReceived


Lessor
Period End2021-06-302021-03-312020-12-312020-09-30
Value4260444846384141
Percentage of LessorOperatingLeasePaymentsToBeReceived100.0100.0100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFiveYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFiveYears


Lessor
Period End2020-12-31
Value530
Percentage of LessorOperatingLeasePaymentsToBeReceivedFiveYears100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFourYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedFourYears


Lessor
Period End2021-06-302021-03-312020-12-312020-09-30
Value530530588526
Percentage of LessorOperatingLeasePaymentsToBeReceivedFourYears100.0100.0100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths

us-gaap:LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths


Lessor
Period End2021-06-302021-03-312020-12-312020-09-30
Value753752765706
Percentage of LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths100.0100.0100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear

us-gaap:LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear


Lessor
Period End2021-06-302021-03-312020-09-30
Value384575178
Percentage of LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear100.0100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThereafter

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThereafter


Lessor
Period End2020-12-31
Value1297
Percentage of LessorOperatingLeasePaymentsToBeReceivedThereafter100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThreeYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedThreeYears


Lessor
Period End2021-06-302021-03-312020-12-312020-09-30
Value589588706648
Percentage of LessorOperatingLeasePaymentsToBeReceivedThreeYears100.0100.0100.0100.0

us-gaap:LessorOperatingLeasePaymentsToBeReceivedTwoYears

us-gaap:LessorOperatingLeasePaymentsToBeReceivedTwoYears


Lessor
Period End2021-06-302021-03-312020-12-312020-09-30
Value707706752694
Percentage of LessorOperatingLeasePaymentsToBeReceivedTwoYears100.0100.0100.0100.0

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LettersOfCreditOutstandingAmount


Letters
Period End2021-03-312020-12-312020-09-302020-03-312019-12-31
Value1000000.01000000.03000000.03000000.01000000.0
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0100.0

us-gaap:LimitedPartnersCapitalAccount mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:LimitedPartnersCapitalAccount

mlp:PublicDesignator, mlp:CommonUnits


Limited
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value264926472706273427352717
Percentage of LimitedPartnersCapitalAccount100.0100.0100.0100.0100.0100.0

us-gaap:LimitedPartnersCapitalAccount mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:NonPublicDesignator, mlp:CommonUnits, us-gaap:MajorityShareholder


Limited
Period End2020-12-312019-12-31
Value-656.0-628.0
Percentage of LimitedPartnersCapitalAccount-24.2-23.1

mlp:NonpublicDesignator, mlp:CommonUnits, us-gaap:MajorityShareholder


Limited
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value-820.0-828.0-656.0-578.0-572.0-628.0
Percentage of LimitedPartnersCapitalAccount-31.0-31.3-24.2-21.1-20.9-23.1

us-gaap:LineOfCredit us-gaap:CreditFacility

us-gaap:LineOfCredit

us-gaap:RevolvingCreditFacility


Line
Period End2021-06-302020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-31
Value154150.00.00.0151250.021050400.00.00.00.018
Percentage of LineOfCredit100.0100.00.00.00.0100.0100.00.0100.0100.0100.00.00.00.00.0100.0

us-gaap:LineOfCreditFacilityFairValueOfAmountOutstanding

us-gaap:LineOfCreditFacilityFairValueOfAmountOutstanding


Line
Period End2021-03-312020-12-312020-09-30
Value450415290
Percentage of LineOfCreditFacilityFairValueOfAmountOutstanding100.0100.0100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:CreditFacility, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:ShortTermDebt, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Line
Period End2021-04-06
Value450
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths


Long
Period End2020-12-312019-12-31
Value46525
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive


Long
Period End2020-12-31
Value498
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2020-12-31
Value298
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-31
Value5.9
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0

us-gaap:PartnersCapital

us-gaap:PartnersCapital


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value255625662798290229082853283427542616255425092443233322342161177517711628156616581342131439033632431872173166154574568
Percentage of PartnersCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PartnersCapitalAttributableToNoncontrollingInterest

us-gaap:PartnersCapitalAttributableToNoncontrollingInterest


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value2832872933053050.0
Percentage of PartnersCapitalAttributableToNoncontrollingInterest100.0100.0100.0100.0100.00.0

us-gaap:PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest

us-gaap:PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value283928533091320732132853283427542616255425092161
Percentage of PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

mlp:PublicDesignator, mlp:CommonUnits


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value264926472706273427352723271726642555252324852274
Percentage of PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest93.392.887.585.385.195.495.996.797.798.899.0105.2

mlp:PublicDesignator, mlp:PreferredUnits


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value729749749747746747746746746747746746
Percentage of PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest25.726.324.223.323.226.226.327.128.529.229.734.5

us-gaap:PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:RelatedPartyTransactionsByRelatedParty

mlp:NonPublicDesignator, mlp:CommonUnits, us-gaap:MajorityShareholder


Partners
Period End2020-12-312019-12-312018-12-312017-12-31
Value-656.0-628.0592487
Percentage of PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest-21.2-22.223.622.5

mlp:NonpublicDesignator, mlp:CommonUnits, us-gaap:MajorityShareholder


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-820.0-828.0-656.0-578.0-572.0-616.0-628.0-655.0626600592
Percentage of PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest-28.9-29.0-21.2-18.0-17.8-21.6-22.2-23.823.923.523.6

us-gaap:PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest us-gaap:PartnerCapitalComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-2.0-2.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0
Percentage of PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest-0.1-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0

us-gaap:PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Partners
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-31
Value2832872933053050.00.00.00.00.0
Percentage of PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest10.010.19.59.59.50.00.00.00.00.0

us-gaap:PreferredUnitsPreferredPartnersCapitalAccounts mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:PreferredUnitsPreferredPartnersCapitalAccounts

mlp:PublicDesignator, mlp:PreferredUnits


Preferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value729749749747746746
Percentage of PreferredUnitsPreferredPartnersCapitalAccounts100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-31
Value125212191186
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-31
Value365336463639
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-31
Value490548654825
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization us-gaap:PropertyPlantAndEquipmentByType

mlp:CavernsAndRelatedAssets


Property
Period End2021-06-302021-03-312020-12-31
Value733733732
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization14.915.115.2

mlp:ProcessingAndRelatedAssets


Property
Period End2021-06-302021-03-312020-12-31
Value106410641063
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization21.721.922.0

mlp:TerminalsandStorageFacilities


Property
Period End2021-06-302021-03-312020-12-31
Value851849847
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization17.317.517.6

us-gaap:BuildingAndBuildingImprovements


Property
Period End2021-06-302021-03-312020-12-31
Value117116115
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization2.42.42.4

us-gaap:ConstructionInProgress


Property
Period End2021-06-302021-03-312020-12-31
Value445420394
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization9.18.68.2

us-gaap:Pipelines


Property
Period End2021-06-302021-03-312020-12-31
Value153915271518
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization31.431.431.5

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value659912439801091463672107778192359487
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SaleOfStockPricePerShare us-gaap:LimitedPartnersCapitalAccountByClass

us-gaap:SaleOfStockPricePerShare

mlp:PreferredUnits


Sale
Period End2020-12-31
Value54.27
Percentage of SaleOfStockPricePerShare100.0

us-gaap:ShortTermBorrowings

us-gaap:ShortTermBorrowings


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value465500465340265252532515015500.025252517252.0150.0
Percentage of ShortTermBorrowings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ShortTermBorrowings us-gaap:DebtInstrument

us-gaap:MunicipalBonds


Short
Period End2020-09-30
Value50
Percentage of ShortTermBorrowings14.7

us-gaap:ShortTermBorrowings us-gaap:DebtInstrument, us-gaap:LongtermDebtType

mlp:TaxExemptBondsDue2021, mlp:TaxExemptBonds


Short
Period End2021-04-01
Value50
Percentage of ShortTermBorrowings0.0

us-gaap:ShortTermBorrowings us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:MunicipalBonds, us-gaap:SubsequentEvent


Short
Period End2021-04-01
Value50
Percentage of ShortTermBorrowings0.0

us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount

mlp:LibertyPipelineLLC


Variable
Period End2021-03-312020-12-312020-09-30
Value46241239
Percentage of VariableInterestEntityEntityMaximumLossExposureAmount100.0100.0100.0

Line plots across dimensions of each concept


TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:NetIncomeLoss
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount
(None, 'us-gaap:LimitedPartner')
Net Income Lossus-gaap: Limited Partners Capital Account By Class, us-gaap: Partner Type Of Partners Capital Account
us-gaap:ProfitLoss
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
('mlp:PublicDesignator', None)
Profit Lossmlp: Public Or Nonpublic Designator, us-gaap: Limited Partners Capital Account By Class
us-gaap:Revenues
us-gaap:ProductOrService
(None,)
Revenuesus-gaap: Product Or Service
us-gaap:ReceivablesNetCurrent
us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
(None,)
Receivables Net Currentus-gaap: Accounts Notes Loans And Financing Receivable By Receivable Type
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:NetIncomeLoss
us-gaap:LimitedPartnersCapitalAccountByClass, us-gaap:PartnerTypeOfPartnersCapitalAccount
(None, 'us-gaap:LimitedPartner')
Net Income Lossus-gaap: Limited Partners Capital Account By Class, us-gaap: Partner Type Of Partners Capital Account
us-gaap:ProfitLoss
mlp:PublicOrNonpublicDesignator, us-gaap:LimitedPartnersCapitalAccountByClass
('mlp:PublicDesignator', None)
Profit Lossmlp: Public Or Nonpublic Designator, us-gaap: Limited Partners Capital Account By Class