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  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLongTermInventory" id="pagp_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLongTermInventory" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapital" id="pagp_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapital" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ShortButanePositionContractsRelatedToSubsequentSaleOfProductMember" id="pagp_ShortButanePositionContractsRelatedToSubsequentSaleOfProductMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ButtePipelineCompanyMember" id="pagp_ButtePipelineCompanyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashFlowHedgeGainLossToBeReclassifiedRemainingPortion" id="pagp_CashFlowHedgeGainLossToBeReclassifiedRemainingPortion" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="CashPaidRelatedToPurchasesOfLinefillAndBaseGas" id="pagp_CashPaidRelatedToPurchasesOfLinefillAndBaseGas" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <element id="pagp_CashReceivedRelatedToSalesOfLinefillAndBaseGas" name="CashReceivedRelatedToSalesOfLinefillAndBaseGas" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="AAPManagementUnitActivityRollForward" id="pagp_AAPManagementUnitActivityRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_CommissionPaidToSalesAgent" name="CommissionPaidToSalesAgent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="CommonUnitsMember" id="pagp_CommonUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ComputationOfBasicAndDilutedEarningsPerLimitedPartnerUnitTable" id="pagp_ComputationOfBasicAndDilutedEarningsPerLimitedPartnerUnitTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PipelineLossAllowanceCrudeOilContractNetShortPositionMember" id="pagp_PipelineLossAllowanceCrudeOilContractNetShortPositionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PipelineLossAllowanceCrudeOilContractNetLongPositionMember" id="pagp_PipelineLossAllowanceCrudeOilContractNetLongPositionMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_DebtInstrumentCoverageRatioDebtToEBITDAAcquisitionPeriodMaximum" name="DebtInstrumentCoverageRatioDebtToEBITDAAcquisitionPeriodMaximum" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_DebtInstrumentCoverageRatioDebtToEBITDAMaximum" name="DebtInstrumentCoverageRatioDebtToEBITDAMaximum" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="DistributionEquivalentRightPayments" id="pagp_DistributionEquivalentRightPayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <element id="pagp_DistributionEquivalentRightsCashPayments" name="DistributionEquivalentRightsCashPayments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_DistributionThresholdForParticipationInDistributions" name="DistributionThresholdForParticipationInDistributions" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="DocumentEntityInformationAbstract" id="pagp_DocumentEntityInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EmissionReductionCreditsMember" id="pagp_EmissionReductionCreditsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EnvironmentalRemediationCashExpendituresPeriodInYears" id="pagp_EnvironmentalRemediationCashExpendituresPeriodInYears" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EstimatedSizeOfRelease" id="pagp_EstimatedSizeOfRelease" type="num:volumeItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExpenseForWithholdingTaxes" id="pagp_ExpenseForWithholdingTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesDerivativeEnteredInto" id="pagp_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesDerivativeEnteredInto" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityGainLossIncludedInEarningsPeriodIncreaseDecrease" id="pagp_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityGainLossIncludedInEarningsPeriodIncreaseDecrease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="FieldOperatingCostsAndGeneralAndAdministrativeExpensesPolicyTextBlock" id="pagp_FieldOperatingCostsAndGeneralAndAdministrativeExpensesPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FieldOperatingSegmentMember" id="pagp_FieldOperatingSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FiveForwardStartingThirtyYearInterestRateSwapMember" id="pagp_FiveForwardStartingThirtyYearInterestRateSwapMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ForeignIncomeTaxExpenseBenefitAtForeignStatutoryRate" id="pagp_ForeignIncomeTaxExpenseBenefitAtForeignStatutoryRate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="FrontierPipelineCompanyMember" id="pagp_FrontierPipelineCompanyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_GainLossOnSaleOfLinefillAndBaseGas" name="GainLossOnSaleOfLinefillAndBaseGas" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelOneMember" id="pagp_PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelThreeMember" id="pagp_PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelFourMember" id="pagp_PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelFourMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelTwoMember" id="pagp_PlainsAllAmericanPipelineLPGeneralPartnerDistributionLevelTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_GeneralPartnerDistributionIncludingIncentiveDistributionPercentage" name="GeneralPartnerDistributionIncludingIncentiveDistributionPercentage" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_GeneralPartnerDistributionPercentage" name="GeneralPartnerDistributionPercentage" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_GeneralPartnerIncentiveDistributionThreshold" name="GeneralPartnerIncentiveDistributionThreshold" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="GoodwillPurchasePriceAccountingAndOtherAdjustments" id="pagp_GoodwillPurchasePriceAccountingAndOtherAdjustments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="HedgedTransactionsProbableOfNotOccurringMember" id="pagp_HedgedTransactionsProbableOfNotOccurringMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IndirectOwnershipInterestInEntityMember" id="pagp_IndirectOwnershipInterestInEntityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InventoryByCategoryAbstract" id="pagp_InventoryByCategoryAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InventoryCurrentAndNoncurrent" id="pagp_InventoryCurrentAndNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureAbstract" id="pagp_InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureTextBlock" id="pagp_InventoryLinefillAndBaseGasAndLongTermInventoryDisclosureTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InventoryTable" id="pagp_InventoryTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InventoryVolumesCurrent" id="pagp_InventoryVolumesCurrent" type="num:volumeItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InventoryVolumesLinefillAndBaseGas" id="pagp_InventoryVolumesLinefillAndBaseGas" type="num:volumeItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InventoryVolumesNoncurrent" id="pagp_InventoryVolumesNoncurrent" type="num:volumeItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InventoryWeightedAveragePricePerUnitCurrent" id="pagp_InventoryWeightedAveragePricePerUnitCurrent" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InventoryWeightedAveragePricePerUnitLinefillAndBaseGas" id="pagp_InventoryWeightedAveragePricePerUnitLinefillAndBaseGas" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InventoryWeightedAveragePricePerUnitNoncurrent" id="pagp_InventoryWeightedAveragePricePerUnitNoncurrent" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="KempRiverPipelineReleaseMember" id="pagp_KempRiverPipelineReleaseMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LandAndOtherMember" id="pagp_LandAndOtherMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LiabilitiesForOutstandingChecks" id="pagp_LiabilitiesForOutstandingChecks" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LiabilityAwardsMember" id="pagp_LiabilityAwardsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LineOfCreditAndCommercialPaperMember" id="pagp_LineOfCreditAndCommercialPaperMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_AAPSeniorSecuredCreditAgreementMember" name="AAPSeniorSecuredCreditAgreementMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="LinefillAndBaseGas" id="pagp_LinefillAndBaseGas" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="LongPositionOnNaturalGasContractsMember" id="pagp_LongPositionOnNaturalGasContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongPowerPositionForPowerSupplyRequirementsContractsMember" id="pagp_LongPowerPositionForPowerSupplyRequirementsContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_LongTermDebtWeightedAverageLife" name="LongTermDebtWeightedAverageLife" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="LossContingencyPenaltyOrFineAssessed" id="pagp_LossContingencyPenaltyOrFineAssessed" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <element id="pagp_MaintenanceCapital" name="MaintenanceCapital" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_MarathonPetroleumCorporationMember" name="MarathonPetroleumCorporationMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_MaximumPercentageParticipationForDistributionInExcessOfThreshold" name="MaximumPercentageParticipationForDistributionInExcessOfThreshold" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="NGLMember" id="pagp_NGLMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NaturalGasMember" id="pagp_NaturalGasMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetLongPositionOnCrudeOilDerivativeContractsMember" id="pagp_NetLongPositionOnCrudeOilDerivativeContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_NetProceedsFromRepaymentsOfSeniorUnsecuredRevolvingCreditFacilities" name="NetProceedsFromRepaymentsOfSeniorUnsecuredRevolvingCreditFacilities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_NetProceedsFromRepaymentsOfShortTermLetterOfCreditAndHedgedInventoryFacility" name="NetProceedsFromRepaymentsOfShortTermLetterOfCreditAndHedgedInventoryFacility" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_NetProceedsFromRepaymentsOfSubsidiaryCreditAgreement" name="NetProceedsFromRepaymentsOfSubsidiaryCreditAgreement" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="NetShortTimeSpreadPositionOnAnticipatedCrudeOilLeaseGatheringPurchaseContractsMember" id="pagp_NetShortTimeSpreadPositionOnAnticipatedCrudeOilLeaseGatheringPurchaseContractsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NonmonetaryNotionalAmountOfPriceRiskDerivativesAveragePerDay" id="pagp_NonmonetaryNotionalAmountOfPriceRiskDerivativesAveragePerDay" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="pagp_NumberOfDaysRequiredForDistributionToUnitholdersAfterEndOfQuarter" name="NumberOfDaysRequiredForDistributionToUnitholdersAfterEndOfQuarter" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="NumberOfEventsResultingInRelease" id="pagp_NumberOfEventsResultingInRelease" type="xbrli:integerItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_NumberOfOneYearExtensionsOfRevolvingCreditFacility" name="NumberOfOneYearExtensionsOfRevolvingCreditFacility" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="OffsettingAssetsLiabilitiesLineItems" id="pagp_OffsettingAssetsLiabilitiesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OffsettingAssetsLiabilitiesTable" id="pagp_OffsettingAssetsLiabilitiesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OrganizationAndBasisOfPresentationLineItems" id="pagp_OrganizationAndBasisOfPresentationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OrganizationConsolidationAndPresentationOfFinancialStatementsTable" id="pagp_OrganizationConsolidationAndPresentationOfFinancialStatementsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherAgreementsMember" id="pagp_OtherAgreementsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_OtherAssetsNoncurrentGross" name="OtherAssetsNoncurrentGross" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="OtherConsolidatedEquityCompensationInformationAbstract" id="pagp_OtherConsolidatedEquityCompensationInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherNoncurrentLongTermDebt" id="pagp_OtherNoncurrentLongTermDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="OutstandingUnitsEarnedRollForward" id="pagp_OutstandingUnitsEarnedRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OutstandingUnitsRollForward" id="pagp_OutstandingUnitsRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PAAContinuousOfferingProgramMember" id="pagp_PAAContinuousOfferingProgramMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PAAGPLLCMember" id="pagp_PAAGPLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGMember" id="pagp_PNGMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalAndDistributionLineItems" id="pagp_PartnersCapitalAndDistributionLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalAndDistributionsTable" id="pagp_PartnersCapitalAndDistributionsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PartsAndSuppliesMember" id="pagp_PartsAndSuppliesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_PercentageDistributionOfAvailableCash" name="PercentageDistributionOfAvailableCash" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="PercentageOfFaceValueAtWhichSeniorNotesAreSold" id="pagp_PercentageOfFaceValueAtWhichSeniorNotesAreSold" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="PipelineTariffActivitiesTruckingAndRelatedRevenues" id="pagp_PipelineTariffActivitiesTruckingAndRelatedRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PlainsAAPLPMember" id="pagp_PlainsAAPLPMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanGPLLCMember" id="pagp_PlainsAllAmericanGPLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanPipelineLPMember" id="pagp_PlainsAllAmericanPipelineLPMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PropertyTaxAbatementMember" id="pagp_PropertyTaxAbatementMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PurchasesAndRelatedCosts" id="pagp_PurchasesAndRelatedCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="PurchasesAndRelatedCostsMember" id="pagp_PurchasesAndRelatedCostsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PurchasesAndRelatedCostsPolicyTextBlock" id="pagp_PurchasesAndRelatedCostsPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReconciliationOfOperatingProfitLossFromSegmentsToNetIncomeAttributableToParentTableTextBlock" id="pagp_ReconciliationOfOperatingProfitLossFromSegmentsToNetIncomeAttributableToParentTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ReductionInIncentiveDistributionsAbstract" id="pagp_ReductionInIncentiveDistributionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyOwnershipInterestInSubsidiaryPercentage" id="pagp_RelatedPartyOwnershipInterestInSubsidiaryPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="SLCPipelineLLCMember" id="pagp_SLCPipelineLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SalesAndRelatedRevenues" id="pagp_SalesAndRelatedRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SalesAndRelatedRevenuesMember" id="pagp_SalesAndRelatedRevenuesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfCapitalUnitsIssuedDuringPeriodTableTextBlock" id="pagp_ScheduleOfCapitalUnitsIssuedDuringPeriodTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfDebtInstrumentsTable" id="pagp_ScheduleOfDebtInstrumentsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfInventoryLinefillAndBaseGasAndLongTermInventoryTableTextBlock" id="pagp_ScheduleOfInventoryLinefillAndBaseGasAndLongTermInventoryTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfOffsettingAssetsAndLiabilitiesTableTextBlock" id="pagp_ScheduleOfOffsettingAssetsAndLiabilitiesTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedPaymentAwardsExpenseTableTextBlock" id="pagp_ScheduleOfShareBasedPaymentAwardsExpenseTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorNotesDueInOctober2023At3.85PercentMember" id="pagp_SeniorNotesDueInOctober2023At3.85PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_SeniorSecuredHedgedInventoryDebtFacilityMember" name="SeniorSecuredHedgedInventoryDebtFacilityMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="SeniorUnsecuredRevolvingCreditFacilityMember" id="pagp_SeniorUnsecuredRevolvingCreditFacilityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedInPeriod" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodGrantDateFairValue" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsEarnedNumber" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsEarnedNumber" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsOutstanding" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstanding" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnitsEarnedOutstanding" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnitsEarnedOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <element id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalSettlementFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalSettlementFairValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearFour" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearFour" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearOne" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearOne" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearThree" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearThree" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearTwo" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearTwo" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingThereafter" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingThereafter" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedInPeriodSettledInCash" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesVestedInPeriodSettledInCash" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedInPeriodCashSettled" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedInPeriodCashSettled" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansPeriodAfterDistributionEarned" name="ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansPeriodAfterDistributionEarned" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedDistributionLowerRangeLimit" name="ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedDistributionLowerRangeLimit" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedDistributionUpperRangeLimit" name="ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedDistributionUpperRangeLimit" nillable="true" type="num:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="NetShortPositionContractsRelatedToAnticipatedInventorySalesMember" id="pagp_NetShortPositionContractsRelatedToAnticipatedInventorySalesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShortPropanePositionContractsRelatedToSubsequentSaleOfProductMember" id="pagp_ShortPropanePositionContractsRelatedToSubsequentSaleOfProductMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShortTermBorrowingsRepaymentPeriod" id="pagp_ShortTermBorrowingsRepaymentPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_StandbyLettersOfCreditReceived" name="StandbyLettersOfCreditReceived" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="StatementOfLimitedLiabilityCompanyAbstract" id="pagp_StatementOfLimitedLiabilityCompanyAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StorageTerminalAndRailFacilitiesMember" id="pagp_StorageTerminalAndRailFacilitiesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StorageTerminallingProcessingAndRelatedRevenues" id="pagp_StorageTerminallingProcessingAndRelatedRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="StorageTerminallingProcessingAndRelatedRevenuesMember" id="pagp_StorageTerminallingProcessingAndRelatedRevenuesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TenForwardStartingThirtyYearInterestRateSwapMember" id="pagp_TenForwardStartingThirtyYearInterestRateSwapMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TruckingEquipmentAndOtherMember" id="pagp_TruckingEquipmentAndOtherMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_USDRailTerminalAcquisitionMember" name="USDRailTerminalAcquisitionMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="UnrealizedGainsAndLossesRelatingToLevel3DerivativesAbstract" id="pagp_UnrealizedGainsAndLossesRelatingToLevel3DerivativesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="VariationMarginPostedReturned" id="pagp_VariationMarginPostedReturned" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ShortWTIPositionContractsRelatedToSubsequentSaleOfProductMember" id="pagp_ShortWTIPositionContractsRelatedToSubsequentSaleOfProductMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="WhiteCliffsPipelineLlcMember" id="pagp_WhiteCliffsPipelineLlcMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsGPHoldingsLongTermIncentivePlansMember" id="pagp_PlainsGPHoldingsLongTermIncentivePlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EquityBasedCompensationPlanAAPManagementUnitsMember" id="pagp_EquityBasedCompensationPlanAAPManagementUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AcquisitionsIn2013Member" id="pagp_AcquisitionsIn2013Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_OtherAcquisitionsIn2012Member" name="OtherAcquisitionsIn2012Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="ScheduleOfRevenuesFromExternalCustomersByGeographicalAreasTableTextBlock" id="pagp_ScheduleOfRevenuesFromExternalCustomersByGeographicalAreasTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfLongLivedAssetsByGeographicalAreasTableTextBlock" id="pagp_ScheduleOfLongLivedAssetsByGeographicalAreasTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationManagementUnitsActivityTableTextBlock" id="pagp_ScheduleOfShareBasedCompensationManagementUnitsActivityTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfLongTermIncentivePlanAwardsOutstandingAndExpectedToVestTableTextBlock" id="pagp_ScheduleOfLongTermIncentivePlanAwardsOutstandingAndExpectedToVestTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAmortizationTableTextBlock" id="pagp_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAmortizationTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDateFairValueOfOutstandingAAPManagementUnitsRollForward" id="pagp_GrantDateFairValueOfOutstandingAAPManagementUnitsRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_NumberOfLongTermIncentivePlanConsolidated" name="NumberOfLongTermIncentivePlanConsolidated" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationAbstract" id="pagp_EquityBasedCompensationFairValueFutureAmortizationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseYearOne" name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearOne" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseYearTwo" name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearTwo" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseYearThree" name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearThree" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseYearFour" name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearFour" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EquityBasedCompensationFairValueFutureAmortizationExpenseYearFive" name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearFive" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="AnnualizedDistributionProbableOfOccurring" id="pagp_AnnualizedDistributionProbableOfOccurring" type="num:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrossMargin" id="pagp_GrossMargin" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <element id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriod" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="CommonSharesClassAMember" id="pagp_CommonSharesClassAMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommonSharesClassBMember" id="pagp_CommonSharesClassBMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PlainsAllAmericanLongTermIncentivePlansMember" id="pagp_PlainsAllAmericanLongTermIncentivePlansMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterestUnits" id="pagp_SubsidiaryOfLimitedLiabilityCompanyOrLimitedPartnershipOwnershipInterestUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxesAttributableToNoncontrollingInterest" id="pagp_IncomeTaxesAttributableToNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <element id="pagp_DistributionOfProceedsFromIssuanceInitialPublicOffering" name="DistributionOfProceedsFromIssuanceInitialPublicOffering" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="SeniorNotesDueInJune2015At5.25PercentMember" id="pagp_SeniorNotesDueInJune2015At5.25PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorNotesDueInAugust2016At5.88PercentMember" id="pagp_SeniorNotesDueInAugust2016At5.88PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalAccountUnitsSoldInPublicOfferingOverAllotmentOption" id="pagp_PartnersCapitalAccountUnitsSoldInPublicOfferingOverAllotmentOption" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SharesOutstandingReconciliationAbstract" id="pagp_SharesOutstandingReconciliationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_LimitedPartnersCapitalAccountUnitsOrSharesExchanged" name="LimitedPartnersCapitalAccountUnitsOrSharesExchanged" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="ReductionInIncentiveDistributions" id="pagp_ReductionInIncentiveDistributions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <element id="pagp_UnitConversionRatio" name="UnitConversionRatio" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="IncomeTaxTable" id="pagp_IncomeTaxTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxLineItems" id="pagp_IncomeTaxLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_DebtInstrumentLeverageRatioMaximum" name="DebtInstrumentLeverageRatioMaximum" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsButAfterDeductingIncomeAndTaxesAttributableToNoncontrollingInterest" id="pagp_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsButAfterDeductingIncomeAndTaxesAttributableToNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <element id="pagp_Phillips66CompanyMember" name="Phillips66CompanyMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="DistributionOfProceedsFromInitialPublicOffering" id="pagp_DistributionOfProceedsFromInitialPublicOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="PartnersCapitalDeferredTaxAsset" id="pagp_PartnersCapitalDeferredTaxAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriodWeightedAverageGrantDateFairValue" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsConvertedInPeriodWeightedAverageGrantDateFairValue" type="num:perShareItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_PartnersCapitalAccountTransferOfOwnershipInterest" name="PartnersCapitalAccountTransferOfOwnershipInterest" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="UnallocatedGeneralAndAdministrativeExpense" id="pagp_UnallocatedGeneralAndAdministrativeExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <element id="pagp_ExxonMobilCorporationMember" name="ExxonMobilCorporationMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="PNGMergerMember" id="pagp_PNGMergerMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PNGTransactionGrantsMember" id="pagp_PNGTransactionGrantsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AAPUnitsMember" id="pagp_AAPUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GeneralPartnerUnitsMember" id="pagp_GeneralPartnerUnitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_LimitedPartnersCapitalAccountSharesIssuedInExchange" name="LimitedPartnersCapitalAccountSharesIssuedInExchange" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="NumberOfDaysRequiredForDistributionToShareholdersAfterEndOfQuarter" id="pagp_NumberOfDaysRequiredForDistributionToShareholdersAfterEndOfQuarter" type="xbrli:durationItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_UnitExchangeRatio" name="UnitExchangeRatio" nillable="true" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="DeferredTaxAssetsInvestmentsInSubsidiaries" id="pagp_DeferredTaxAssetsInvestmentsInSubsidiaries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="CrudeOilGradeSpreadPositionsMember" id="pagp_CrudeOilGradeSpreadPositionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_ReductionInCashAvailableForDistribution" name="ReductionInCashAvailableForDistribution" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="ScheduleOfImpactOfExchangeRightExercisesSharesOutstandingReconciliationTableTextBlock" id="pagp_ScheduleOfImpactOfExchangeRightExercisesSharesOutstandingReconciliationTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodValueShareBasedCompensationNetOfAdjustmentsRelatedToTaxWithholding" id="pagp_StockIssuedDuringPeriodValueShareBasedCompensationNetOfAdjustmentsRelatedToTaxWithholding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <element id="pagp_DistributionsReceivedFromConsolidatedSubsidiary" name="DistributionsReceivedFromConsolidatedSubsidiary" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_NetCashReceivedPaidForTerminatedHedgingInstruments" name="NetCashReceivedPaidForTerminatedHedgingInstruments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReservedForFutureGrants" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReservedForFutureGrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedGrantDateFairValue" id="pagp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="SeniorNotesDueInJune2044At4.70PercentMember" id="pagp_SeniorNotesDueInJune2044At4.70PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeniorNotesDueInNovember2024At3.60PercentMember" id="pagp_SeniorNotesDueInNovember2024At3.60PercentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BridgeTexPipelineCompanyLLCMember" id="pagp_BridgeTexPipelineCompanyLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <element id="pagp_AcquisitionsIn2014Member" name="AcquisitionsIn2014Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_OtherAcquisitionsIn2014Member" name="OtherAcquisitionsIn2014Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_NetIncomeLossAvailableToParentAfterAdjustmentForNetIncomePriorToInitialPublicOffering" name="NetIncomeLossAvailableToParentAfterAdjustmentForNetIncomePriorToInitialPublicOffering" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SeniorNotesDue2023At3.85PercentMember" name="SeniorNotesDue2023At3.85PercentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_FourthQuarterDistributionFY2014Member" name="FourthQuarterDistributionFY2014Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_MarketedOfferingsMember" name="MarketedOfferingsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_PlainsAllAmerican2013LongTermIncentivePlansMember" name="PlainsAllAmerican2013LongTermIncentivePlansMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_PlainsAllAmericanPNGSuccessorLongTermIncentivePlanMember" name="PlainsAllAmericanPNGSuccessorLongTermIncentivePlanMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SeniorNotesAt4.25PercentMember" name="SeniorNotesAt4.25PercentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_LineOfCreditFacilityPeriodForWhichTermOfCreditFacilityMayBeExtended" name="LineOfCreditFacilityPeriodForWhichTermOfCreditFacilityMayBeExtended" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_LineOfCreditFacilityExtensionPeriod" name="LineOfCreditFacilityExtensionPeriod" nillable="true" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_AggregateCommonStockOfferPrice" name="AggregateCommonStockOfferPrice" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ForeignExchangeForwardContractsThatExchangeCanadianDollarsForUSDollarsAtAverageRateDisclosedMaturingIn2015Member" name="ForeignExchangeForwardContractsThatExchangeCanadianDollarsForUSDollarsAtAverageRateDisclosedMaturingIn2015Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ForeignExchangeForwardContractsThatExchangeUSDollarsForCanadianDollarsAtAverageRateDisclosedMaturingIn2015Member" name="ForeignExchangeForwardContractsThatExchangeUSDollarsForCanadianDollarsAtAverageRateDisclosedMaturingIn2015Member" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_RevenuesMember" name="RevenuesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_OxyMember" name="OxyMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_PNGLongTermIncentivePlanMember" name="PNGLongTermIncentivePlanMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_TotalCostToCleanUpAndRemediateSite" name="TotalCostToCleanUpAndRemediateSite" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_TotalEstimatedCostToCleanUpAndRemediateSite" name="TotalEstimatedCostToCleanUpAndRemediateSite" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_CostToCleanUpAndRemediateSite" name="CostToCleanUpAndRemediateSite" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_InterestExpenseHedgedInventoryPurchases" name="InterestExpenseHedgedInventoryPurchases" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_PartnersCapitalAccountChangeInOwnershipInterest" name="PartnersCapitalAccountChangeInOwnershipInterest" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_NumberOfCommonUnitsOfParentIssuedPerUnitOfSubsidiaryOwned" name="NumberOfCommonUnitsOfParentIssuedPerUnitOfSubsidiaryOwned" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EarningsPerShareDilutedNumeratorAbstract" name="EarningsPerShareDilutedNumeratorAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EarningsPerShareDilutedDenominatorAbstract" name="EarningsPerShareDilutedDenominatorAbstract" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SeniorNotesDueInDecember2019At2.60PercentMember" name="SeniorNotesDueInDecember2019At2.60PercentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SeniorNotesDueInFebruary2045At4.90PercentMember" name="SeniorNotesDueInFebruary2045At4.90PercentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SeniorUnsecured364DayRevolvingCreditFacilityMember" name="SeniorUnsecured364DayRevolvingCreditFacilityMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_NetShortNaturalGasPositionRelatedToAnticipatedNaturalGasSalesMember" name="NetShortNaturalGasPositionRelatedToAnticipatedNaturalGasSalesMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EightForwardStartingThirtyYearInterestRateSwapOneMember" name="EightForwardStartingThirtyYearInterestRateSwapOneMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EightForwardStartingThirtyYearInterestRateSwapTwoMember" name="EightForwardStartingThirtyYearInterestRateSwapTwoMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EightForwardStartingThirtyYearInterestRateSwapThreeMember" name="EightForwardStartingThirtyYearInterestRateSwapThreeMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_DeferredTaxAssetsMember" name="DeferredTaxAssetsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_RangeTwoOfAnnualizedVestingDistributionAmountMember" name="RangeTwoOfAnnualizedVestingDistributionAmountMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_RangeThreeOfAnnualizedVestingDistributionAmountMember" name="RangeThreeOfAnnualizedVestingDistributionAmountMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_LongPositionRelatedToAnticipatedCrudeOilLinefillRequirementsMember" name="LongPositionRelatedToAnticipatedCrudeOilLinefillRequirementsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_PlainsMidstreamCanadaULCMember" name="PlainsMidstreamCanadaULCMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_NationalEnergyBoardMember" name="NationalEnergyBoardMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ConditionsImposedRelatedToRegulatoryCompliance" name="ConditionsImposedRelatedToRegulatoryCompliance" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ReductionInIncentiveDistributionsPerQuarterIn2015" name="ReductionInIncentiveDistributionsPerQuarterIn2015" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SummaryOfActivityRelatedToTerminatedInterestRateDerivativesTableTextBlock" name="SummaryOfActivityRelatedToTerminatedInterestRateDerivativesTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SegmentPipelineTariffActivitiesTruckingMember" name="SegmentPipelineTariffActivitiesTruckingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SegmentStorageTerminallingProcessingMember" name="SegmentStorageTerminallingProcessingMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SegmentSalesAndLogisticsMember" name="SegmentSalesAndLogisticsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SettoonTowingLLCMember" name="SettoonTowingLLCMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_PaymentsToAcquireEquityMethodInvestmentsWorkingCapitalAdjustment" name="PaymentsToAcquireEquityMethodInvestmentsWorkingCapitalAdjustment" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EagleFordPipelineLLCMember" name="EagleFordPipelineLLCMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EnterpriseProductsPartnersMember" name="EnterpriseProductsPartnersMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EquityMethodInvestmentSummarizedFinancialInformationOperatingIncome" name="EquityMethodInvestmentSummarizedFinancialInformationOperatingIncome" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_SeniorNotesAt5.63PercentMember" name="SeniorNotesAt5.63PercentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_PercentageInterestAndRightsPlegedToSecureCreditFacility" name="PercentageInterestAndRightsPlegedToSecureCreditFacility" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EightForwardStartingInterestRateSwapMember" name="EightForwardStartingInterestRateSwapMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_PlainsAllAmericanGPLLCLongTermIncentiveTrackingUnitPlanMember" name="PlainsAllAmericanGPLLCLongTermIncentiveTrackingUnitPlanMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_VestedAwardsMember" name="VestedAwardsMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_CapitalExpenditures" name="CapitalExpenditures" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_EquityBasedCompensationPlanAapManagementUnitsPolicyTextBlock" name="EquityBasedCompensationPlanAapManagementUnitsPolicyTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_NetIncomeLossAvailableToParentAfterAssumedConversionOfDilutiveConvertibleSecurities" name="NetIncomeLossAvailableToParentAfterAssumedConversionOfDilutiveConvertibleSecurities" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_WeightedAverageNumberDilutedSharesOutstandingAssumedConversionOfDilutiveConvertibleSecurities" name="WeightedAverageNumberDilutedSharesOutstandingAssumedConversionOfDilutiveConvertibleSecurities" nillable="true" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_NetIncomeAttributableToPeriodPriorToInitialPublicOffering" name="NetIncomeAttributableToPeriodPriorToInitialPublicOffering" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_NumberOfTerminatedInterestRateDerivatives" name="NumberOfTerminatedInterestRateDerivatives" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
  <element id="pagp_ScheduleOfOwnershipInterestsInEquityInvestmentsTableTextBlock" name="ScheduleOfOwnershipInterestsInEquityInvestmentsTableTextBlock" nillable="true" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xmlns="http://www.w3.org/2001/XMLSchema" />
</xsd:schema>
