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  <xsd:element name="PipelineTariffActivitiesTruckingAndRelatedRevenues" id="paa_PipelineTariffActivitiesTruckingAndRelatedRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="SupplyAndLogisticsSegmentRevenues" id="paa_SupplyAndLogisticsSegmentRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="AssetImpairmentChargesDescription" id="paa_AssetImpairmentChargesDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CrudeOilRefinedProductsAndLpgSalesAndRelatedRevenuesBuySellTransactions" id="paa_CrudeOilRefinedProductsAndLpgSalesAndRelatedRevenuesBuySellTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="TransportationSegmentRevenues" id="paa_TransportationSegmentRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="FacilitiesSegmentRevenues" id="paa_FacilitiesSegmentRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="StorageTerminallingProcessingAndRelatedRevenues" id="paa_StorageTerminallingProcessingAndRelatedRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="PurchasesAndRelatedCosts" id="paa_PurchasesAndRelatedCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="InterestIncomeAndOtherIncomeExpenseNet" id="paa_InterestIncomeAndOtherIncomeExpenseNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndMinorityInterest" id="paa_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndMinorityInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="IncomeNotSubjectToForeignTax" id="paa_IncomeNotSubjectToForeignTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="IncomeSubjectToForeignTax" id="paa_IncomeSubjectToForeignTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ForeignTaxRate" id="paa_ForeignTaxRate" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GainLossOnSaleOfLinefill" id="paa_GainLossOnSaleOfLinefill" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="NetCashPaidReceivedForTerminatedInterestRateAndForeignCurrencyHedgingInstruments" id="paa_NetCashPaidReceivedForTerminatedInterestRateAndForeignCurrencyHedgingInstruments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ProceedsFromPaymentsToAcquireLinefillInAssetsOwned" id="paa_ProceedsFromPaymentsToAcquireLinefillInAssetsOwned" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="CashReceivedPaidForLinefillNet" id="paa_CashReceivedPaidForLinefillNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="NetProceedsFromRepaymentsOfShortTermLetterOfCreditAndHedgedInventoryFacility" id="paa_NetProceedsFromRepaymentsOfShortTermLetterOfCreditAndHedgedInventoryFacility" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="NetProceedsFromRepaymentsOfSubsidiaryRevolvingCreditFacilities" id="paa_NetProceedsFromRepaymentsOfSubsidiaryRevolvingCreditFacilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ProceedsFromIssuanceOfCommonLimitedPartnersUnitholdersNetOfIssuanceCosts" id="paa_ProceedsFromIssuanceOfCommonLimitedPartnersUnitholdersNetOfIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="PartnersCapitalAccountUnitBasedCompensationLongTermIncentivePlans" id="paa_PartnersCapitalAccountUnitBasedCompensationLongTermIncentivePlans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="PartnersCapitalAccountUnitBasedCompensationClassBUnits" id="paa_PartnersCapitalAccountUnitBasedCompensationClassBUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="PartnersCapitalAccountUnitsIssuedUnitBasedCompensationLongTermIncentivePlans" id="paa_PartnersCapitalAccountUnitsIssuedUnitBasedCompensationLongTermIncentivePlans" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="StatementOfChangesInAccumulatedOtherComprehensiveIncomeAbstract" id="paa_StatementOfChangesInAccumulatedOtherComprehensiveIncomeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ChangesInAccumulatedOtherComprehensiveIncomeTable" id="paa_ChangesInAccumulatedOtherComprehensiveIncomeTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ChangesInAccumulatedOtherComprehensiveIncomeAxis" id="paa_ChangesInAccumulatedOtherComprehensiveIncomeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ChangesInAccumulatedOtherComprehensiveIncomeComponentsDomain" id="paa_ChangesInAccumulatedOtherComprehensiveIncomeComponentsDomain" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AccumulatedOtherComprehensiveIncomeOtherAdjustmentsMember" id="paa_AccumulatedOtherComprehensiveIncomeOtherAdjustmentsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ChangesInAccumulatedOtherComprehensiveIncomeLineItems" id="paa_ChangesInAccumulatedOtherComprehensiveIncomeLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DistributionMadeToCommonUnitHolderOrLimitedPartnerCashFlowSide" id="paa_DistributionMadeToCommonUnitHolderOrLimitedPartnerCashFlowSide" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ProceedsFromPaymentsForOtherFinancingActivitiesCCFI" id="paa_ProceedsFromPaymentsForOtherFinancingActivitiesCCFI" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="IncreaseDecreaseInAccumulatedOtherComprehensiveIncomeRollForward" id="paa_IncreaseDecreaseInAccumulatedOtherComprehensiveIncomeRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherComprehensiveIncomePartnershipsPortionOfEquityInvestee" id="paa_OtherComprehensiveIncomePartnershipsPortionOfEquityInvestee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="DocumentEntityInformationAbstract" id="paa_DocumentEntityInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="InventoryLinefillAndBaseGasAndLongTermInventoryTextBlock" id="paa_InventoryLinefillAndBaseGasAndLongTermInventoryTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NetIncomePerLimitedPartnerUnitTextBlock" id="paa_NetIncomePerLimitedPartnerUnitTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GainOnConversionsOfEquityMethodInvestment" id="paa_GainOnConversionsOfEquityMethodInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="AcquisitionsAndDispositionsDisclosureTextBlock" id="paa_AcquisitionsAndDispositionsDisclosureTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DeferredIncomeTaxExpenseBenefitCashFlowImpact" id="paa_DeferredIncomeTaxExpenseBenefitCashFlowImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="CanadianWithholdingTaxDistributionOnBehalfOfShareholders" id="paa_CanadianWithholdingTaxDistributionOnBehalfOfShareholders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="FieldOperatingCosts" id="paa_FieldOperatingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="OrganizationAndBasisOfPresentationDisclosureAbstract" id="paa_OrganizationAndBasisOfPresentationDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RecentAccountingPronouncementsDisclosureAbstract" id="paa_RecentAccountingPronouncementsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TradeAccountsReceivableDisclosureAbstract" id="paa_TradeAccountsReceivableDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AcquisitionsDisclosureAbstract" id="paa_AcquisitionsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="InventoryLinefillBaseGasAndLongTermInventoryDisclosureAbstract" id="paa_InventoryLinefillBaseGasAndLongTermInventoryDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DebtDisclosureAbstract" id="paa_DebtDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NetIncomePerLimitedPartnerUnitDisclosureAbstract" id="paa_NetIncomePerLimitedPartnerUnitDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PartnersCapitalAndDistributionsDisclosureAbstract" id="paa_PartnersCapitalAndDistributionsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConcentrationRiskPercentageNotMet" id="paa_ConcentrationRiskPercentageNotMet" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="ModificationOfHoldingsUnitsPriorToModification" id="paa_ModificationOfHoldingsUnitsPriorToModification" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="SubsidiaryUnitsOwnedPriorToSubsidiaryEquityIssuance" id="paa_SubsidiaryUnitsOwnedPriorToSubsidiaryEquityIssuance" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="EquityCompensationPlansDisclosureAbstract" id="paa_EquityCompensationPlansDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DerivativesAndHedgingInstrumentsDisclosureAbstract" id="paa_DerivativesAndHedgingInstrumentsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfCondensedConsolidatingBalanceSheetTableTextBlock" id="paa_ScheduleOfCondensedConsolidatingBalanceSheetTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfCondensedConsolidatingStatementsOfOperationsTableTextBlock" id="paa_ScheduleOfCondensedConsolidatingStatementsOfOperationsTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfCondensedConsolidatingStatementsOfCashFlowsTableTextBlock" id="paa_ScheduleOfCondensedConsolidatingStatementsOfCashFlowsTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IncomeTaxesDisclosureAbstract" id="paa_IncomeTaxesDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RevenuesAndExpensesRelatedParties" id="paa_RevenuesAndExpensesRelatedParties" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DueFromToRelatedParties" id="paa_DueFromToRelatedParties" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" id="paa_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock" id="paa_ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" id="paa_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CommitmentsAndContingenciesDisclosureAbstract" id="paa_CommitmentsAndContingenciesDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OperatingAndCapitalLeasesFutureMinimumPaymentsDueCurrent" id="paa_OperatingAndCapitalLeasesFutureMinimumPaymentsDueCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="OperatingAndCapitalLeasesFutureMinimumPaymentsDueInTwoYears" id="paa_OperatingAndCapitalLeasesFutureMinimumPaymentsDueInTwoYears" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="OperatingAndCapitalLeasesFutureMinimumPaymentsDueInThreeYears" id="paa_OperatingAndCapitalLeasesFutureMinimumPaymentsDueInThreeYears" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="OperatingAndCapitalLeasesFutureMinimumPaymentsDueInFourYears" id="paa_OperatingAndCapitalLeasesFutureMinimumPaymentsDueInFourYears" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="OperatingAndCapitalLeasesFutureMinimumPaymentsDueInFiveYears" id="paa_OperatingAndCapitalLeasesFutureMinimumPaymentsDueInFiveYears" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="OperatingAndCapitalLeasesFutureMinimumPaymentsDueThereafter" id="paa_OperatingAndCapitalLeasesFutureMinimumPaymentsDueThereafter" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="OperatingAndCapitalLeasesFutureMinimumPaymentsDue" id="paa_OperatingAndCapitalLeasesFutureMinimumPaymentsDue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="OperatingAndCapitalLeaseExpenditures" id="paa_OperatingAndCapitalLeaseExpenditures" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfQuarterlyFinancialInformationTableTextBlock" id="paa_ScheduleOfQuarterlyFinancialInformationTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OperatingSegmentsDisclosureAbstract" id="paa_OperatingSegmentsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SupplementalCondensedConsolidatingFinancialInformationDisclosureAbstract" id="paa_SupplementalCondensedConsolidatingFinancialInformationDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SubsequentEventsDisclosureAbstract" id="paa_SubsequentEventsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfNotionalAmountsOfOutstandingForeignCurrencyExchangeContractsTableTextBlock" id="paa_ScheduleOfNotionalAmountsOfOutstandingForeignCurrencyExchangeContractsTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock" id="paa_ScheduleOfNonvestedPerformanceBasedUnitsActivityTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfLongTermIncentivePlanAwardsOutstandingAndExpectedToVestTableTextBlock" id="paa_ScheduleOfLongTermIncentivePlanAwardsOutstandingAndExpectedToVestTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfLongTermIncentivePlanAwardsOfSubsidiaryOutstandingAndExpectedToVestTableTextBlock" id="paa_ScheduleOfLongTermIncentivePlanAwardsOfSubsidiaryOutstandingAndExpectedToVestTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfShareBasedCompensationClassBUnitsAwardActivityTableTextBlock" id="paa_ScheduleOfShareBasedCompensationClassBUnitsAwardActivityTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfShareBasedPaymentAwardsExpensesTableTextBlock" id="paa_ScheduleOfShareBasedPaymentAwardsExpensesTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAmortizationTableTextBlock" id="paa_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAmortizationTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DisposalGroupsIncludingDiscontinuedOperationsDisclosureAbstract" id="paa_DisposalGroupsIncludingDiscontinuedOperationsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MajorCustomersAndConcentrationOfCreditRiskDisclosureAbstract" id="paa_MajorCustomersAndConcentrationOfCreditRiskDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyTransactionsDisclosureAbstract" id="paa_RelatedPartyTransactionsDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EnvironmentalRemediationDisclosureAbstract" id="paa_EnvironmentalRemediationDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="QuarterlyFinancialDataDisclosureAbstract" id="paa_QuarterlyFinancialDataDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfCalculationOfNumeratorAndDenominatorInEarningsPerShareTableTextBlock" id="paa_ScheduleOfCalculationOfNumeratorAndDenominatorInEarningsPerShareTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IncreaseDecreaseInShortTermInventories" id="paa_IncreaseDecreaseInShortTermInventories" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="SummaryOfSignificantAccountingPoliciesDisclosureAbstract" id="paa_SummaryOfSignificantAccountingPoliciesDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GeneralPartnerDistributionLevelOneMember" id="paa_GeneralPartnerDistributionLevelOneMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GeneralPartnerDistributionLevelTwoMember" id="paa_GeneralPartnerDistributionLevelTwoMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GeneralPartnerDistributionLevelThreeMember" id="paa_GeneralPartnerDistributionLevelThreeMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AssetRetirementObligationsPolicyTextBlock" id="paa_AssetRetirementObligationsPolicyTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumeratorForBasicAndDilutedEarningsPerLimitedPartnerUnitAbstract" id="paa_NumeratorForBasicAndDilutedEarningsPerLimitedPartnerUnitAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IncreaseDecreaseInLongTermInventories" id="paa_IncreaseDecreaseInLongTermInventories" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="NetProceedsFromRepaymentsOfRevolvingCreditFacilities" id="paa_NetProceedsFromRepaymentsOfRevolvingCreditFacilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="PurchasesAndRelatedCostsPolicyTextBlock" id="paa_PurchasesAndRelatedCostsPolicyTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FieldOperatingCostsAndGeneralAndAdministrativeExpensesPolicyTextBlock" id="paa_FieldOperatingCostsAndGeneralAndAdministrativeExpensesPolicyTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AccountsReceivableNetDisclosureOfMaximumAgeOfBalancesPastScheduledInvoiceDate" id="paa_AccountsReceivableNetDisclosureOfMaximumAgeOfBalancesPastScheduledInvoiceDate" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherAssetsPolicyTextBlock" id="paa_OtherAssetsPolicyTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DenominatorForBasicAndDilutedEarningsPerLimitedPartnerUnitAbstract" id="paa_DenominatorForBasicAndDilutedEarningsPerLimitedPartnerUnitAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EnvironmentalLiabilitiesPolicyTextBlock" id="paa_EnvironmentalLiabilitiesPolicyTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfInventoryTableTextBlock" id="paa_ScheduleOfInventoryTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfExpectedAmortizationExpenseTableTextBlock" id="paa_ScheduleOfExpectedAmortizationExpenseTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LiabilitiesForOutstandingChecks" id="paa_LiabilitiesForOutstandingChecks" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="StorageAndTerminalFacilitiesMember" id="paa_StorageAndTerminalFacilitiesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LandAndOtherMember" id="paa_LandAndOtherMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ChangeInAccountingEstimateOfDepreciableLivesEstimatedDepreciationExpenseReduction" id="paa_ChangeInAccountingEstimateOfDepreciableLivesEstimatedDepreciationExpenseReduction" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ChangeInAccountingEstimateOfDepreciableLivesEstimatedIncreaseInEarningsPerUnit" id="paa_ChangeInAccountingEstimateOfDepreciableLivesEstimatedIncreaseInEarningsPerUnit" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FrontierPipelineCompanyMember" id="paa_FrontierPipelineCompanyMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SettoonTowingMember" id="paa_SettoonTowingMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ButtePipelineCompanyMember" id="paa_ButtePipelineCompanyMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="WhiteCliffsPipelineLlcMember" id="paa_WhiteCliffsPipelineLlcMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MaximumMaturityOfCashEquivalentInvestmentsPeriod" id="paa_MaximumMaturityOfCashEquivalentInvestmentsPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RainbowPipelineCompanyMember" id="paa_RainbowPipelineCompanyMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PAANaturalGasStorageMember" id="paa_PAANaturalGasStorageMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherAssetsMiscellaneousNoncurrent" id="paa_OtherAssetsMiscellaneousNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="AccumulatedAmortizationOfOtherAssetsNoncurrent" id="paa_AccumulatedAmortizationOfOtherAssetsNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="AmortizationExpenseOnOtherAssetsNoncurrent" id="paa_AmortizationExpenseOnOtherAssetsNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="EmissionReductionCreditsMember" id="paa_EmissionReductionCreditsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PropertyTaxAbatementMember" id="paa_PropertyTaxAbatementMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherAssetsNoncurrentGross" id="paa_OtherAssetsNoncurrentGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="NetIncomeLossAfterIncentiveDistribution" id="paa_NetIncomeLossAfterIncentiveDistribution" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="GeneralPartnerOwnershipInterestInNetIncomeLossAfterIncentiveDistribution" id="paa_GeneralPartnerOwnershipInterestInNetIncomeLossAfterIncentiveDistribution" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="AdjustmentForTwoClassMethodForMLP" id="paa_AdjustmentForTwoClassMethodForMLP" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="NetIncomeLossAvailableToLimitedPartnersAfterAdjustmentForTwoClassMethodForMLP" id="paa_NetIncomeLossAvailableToLimitedPartnersAfterAdjustmentForTwoClassMethodForMLP" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="GeneralPartnerOwnershipInterestInSubsidiary" id="paa_GeneralPartnerOwnershipInterestInSubsidiary" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="MaximumInterestHeldByPrincipalOwners" id="paa_MaximumInterestHeldByPrincipalOwners" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="MinimumInterestHeldByPrincipalOwners" id="paa_MinimumInterestHeldByPrincipalOwners" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NumberOfPrincipalOwners" id="paa_NumberOfPrincipalOwners" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RangeOfInterestHeldByPrincipalOwners" id="paa_RangeOfInterestHeldByPrincipalOwners" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NetShortSpreadPositionOnAnticipatedCrudeOilLeaseGatheringPurchaseContractsMember" id="paa_NetShortSpreadPositionOnAnticipatedCrudeOilLeaseGatheringPurchaseContractsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTextBlock" id="paa_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="StorageCapacityOwnedButNotUsedInOperations" id="paa_StorageCapacityOwnedButNotUsedInOperations" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NetLongPositionOnCrudeOilDerivativeContractsMember" id="paa_NetLongPositionOnCrudeOilDerivativeContractsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AnticipatedBaseGasPurchasesMember" id="paa_AnticipatedBaseGasPurchasesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NetShortSwapPositionConsistingOfNYMEXAndICESwapsMember" id="paa_NetShortSwapPositionConsistingOfNYMEXAndICESwapsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NetLongSwapPositionConsistingOfNYMEXAndICESwapsMember" id="paa_NetLongSwapPositionConsistingOfNYMEXAndICESwapsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AverageCrudeOilAndGasSpreadPositionsMember" id="paa_AverageCrudeOilAndGasSpreadPositionsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NaturalGasCallOptionMember" id="paa_NaturalGasCallOptionMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NetShortSpreadPositionOfCalendarOfCallOptionMember" id="paa_NetShortSpreadPositionOfCalendarOfCallOptionMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CrudeOilBasisDifferentialHedgesMember" id="paa_CrudeOilBasisDifferentialHedgesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CrudeOilFuturesAndSwapsMember" id="paa_CrudeOilFuturesAndSwapsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CrudeOilFuturesAndSwapsLongPutOptionMember" id="paa_CrudeOilFuturesAndSwapsLongPutOptionMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CrudeOilFuturesAndSwapsLongCallOptionMember" id="paa_CrudeOilFuturesAndSwapsLongCallOptionMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NetLongPositionOnNaturalGasFuturesContractsMember" id="paa_NetLongPositionOnNaturalGasFuturesContractsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ForeignExchangeForwardContractAtTheRateCAD1.01ToUSD1.00MaturingIn2011Member" id="paa_ForeignExchangeForwardContractAtTheRateCAD1.01ToUSD1.00MaturingIn2011Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ForeignExchangeForwardContractAtTheRateCAD1.01ToUSD1.00MaturingIn2012Member" id="paa_ForeignExchangeForwardContractAtTheRateCAD1.01ToUSD1.00MaturingIn2012Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ForeignExchangeForwardContractAtTheRateCAD1.00ToUSD1.00MaturingIn2013Member" id="paa_ForeignExchangeForwardContractAtTheRateCAD1.00ToUSD1.00MaturingIn2013Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ForeignExchangeForwardContractAtTheRateCAD0.00ToUSD1.00MaturingIn2014Member" id="paa_ForeignExchangeForwardContractAtTheRateCAD0.00ToUSD1.00MaturingIn2014Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NonmonetaryNotionalAmountOfPriceRiskDerivativesAveragePerDay" id="paa_NonmonetaryNotionalAmountOfPriceRiskDerivativesAveragePerDay" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NonmonetaryNotionalAmountOfPriceRiskDerivativesHedgedToManageTheRiskOfNotUtilising" id="paa_NonmonetaryNotionalAmountOfPriceRiskDerivativesHedgedToManageTheRiskOfNotUtilising" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="CrudeOilDerivativeForAnticipatedSaleOfForeignCrudeVolume" id="paa_CrudeOilDerivativeForAnticipatedSaleOfForeignCrudeVolume" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="AdditionalAverageSpreadOverLIBORPercentage" id="paa_AdditionalAverageSpreadOverLIBORPercentage" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="GainLossOnForeignCurrencyCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome" id="paa_GainLossOnForeignCurrencyCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="GainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome" id="paa_GainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="NumberOfInterestRateSwapsThatTerminateBetweenOneAndTwoYears" id="paa_NumberOfInterestRateSwapsThatTerminateBetweenOneAndTwoYears" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NumberOfInterestRateSwapsThatTerminateInOneYear" id="paa_NumberOfInterestRateSwapsThatTerminateInOneYear" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="SalesAndRelatedRevenuesMember" id="paa_SalesAndRelatedRevenuesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PipelineTariffActivitiesTruckingAndRelatedRevenuesMember" id="paa_PipelineTariffActivitiesTruckingAndRelatedRevenuesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="StorageTerminallingProcessingAndRelatedRevenuesMember" id="paa_StorageTerminallingProcessingAndRelatedRevenuesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PurchasesAndRelatedCostsMember" id="paa_PurchasesAndRelatedCostsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FieldOperatingSegmentMember" id="paa_FieldOperatingSegmentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherCurrentAssetsMember" id="paa_OtherCurrentAssetsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherCurrentLiabilitiesMember" id="paa_OtherCurrentLiabilitiesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherLongTermAssetsMember" id="paa_OtherLongTermAssetsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherLongTermLiabilitiesMember" id="paa_OtherLongTermLiabilitiesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisFinancialStatementCaptionsLineItems" id="paa_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisFinancialStatementCaptionsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DerivativeFairValueOfDerivativeNetAssetLiability" id="paa_DerivativeFairValueOfDerivativeNetAssetLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="UnrealizedGainsAndLossesRelatingToLevel3DerivativesAbstract" id="paa_UnrealizedGainsAndLossesRelatingToLevel3DerivativesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityGainLossIncludedInEarningsPeriodIncreaseDecrease" id="paa_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityGainLossIncludedInEarningsPeriodIncreaseDecrease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfRevenuesFromExternalCustomersByGeographicalAreasTableTextBlock" id="paa_ScheduleOfRevenuesFromExternalCustomersByGeographicalAreasTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfLongLivedAssetsByGeographicalAreasTableTextBlock" id="paa_ScheduleOfLongLivedAssetsByGeographicalAreasTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SegmentPipelineTariffActivitiesTruckingMember" id="paa_SegmentPipelineTariffActivitiesTruckingMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SegmentStorageTerminallingProcessingMember" id="paa_SegmentStorageTerminallingProcessingMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SegmentSalesAndLogisticsMember" id="paa_SegmentSalesAndLogisticsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CapitalExpenditure" id="paa_CapitalExpenditure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="MaintenanceCapital" id="paa_MaintenanceCapital" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="CondensedConsolidatingBalanceSheetLineItems" id="paa_CondensedConsolidatingBalanceSheetLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CondensedConsolidatingStatementsOfOperationsLineItems" id="paa_CondensedConsolidatingStatementsOfOperationsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NetOperatingRevenue" id="paa_NetOperatingRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="CondensedConsolidatingStatementsOfCashFlowsLineItems" id="paa_CondensedConsolidatingStatementsOfCashFlowsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NoncashItemsAdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther" id="paa_NoncashItemsAdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" id="paa_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" id="paa_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LongLivedAssets" id="paa_LongLivedAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="InventoryTable" id="paa_InventoryTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CrudeOilMember" id="paa_CrudeOilMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LPGMember" id="paa_LPGMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RefinedProductsMember" id="paa_RefinedProductsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NaturalGasMember" id="paa_NaturalGasMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PartsAndSuppliesMember" id="paa_PartsAndSuppliesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="InventoryLineItems" id="paa_InventoryLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="InventoryRelatedDisclosuresAbstract" id="paa_InventoryRelatedDisclosuresAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ProceedsFromSaleOfLinefill" id="paa_ProceedsFromSaleOfLinefill" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="InventoryByCategoryAbstract" id="paa_InventoryByCategoryAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="InventoryCurrentAndNoncurrent" id="paa_InventoryCurrentAndNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="InventoryVolumesInBarrels" id="paa_InventoryVolumesInBarrels" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionInventoryVolumes" id="paa_BusinessAcquisitionInventoryVolumes" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionPipelinesCapacityAcquired" id="paa_BusinessAcquisitionPipelinesCapacityAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="InventoryVolumesInCubicFeet" id="paa_InventoryVolumesInCubicFeet" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="InventoryWeightedAveragePricePerUnitCurrent" id="paa_InventoryWeightedAveragePricePerUnitCurrent" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="InventoryWeightedAveragePricePerUnitLinefillAndBaseGas" id="paa_InventoryWeightedAveragePricePerUnitLinefillAndBaseGas" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="InventoryWeightedAveragePricePerUnitNoncurrent" id="paa_InventoryWeightedAveragePricePerUnitNoncurrent" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="InventoryWeightedAveragePricePerUnit" id="paa_InventoryWeightedAveragePricePerUnit" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="InventoryVolumesNoncurrent" id="paa_InventoryVolumesNoncurrent" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="InventoryVolumesLinefillAndBaseGas" id="paa_InventoryVolumesLinefillAndBaseGas" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="InventoryVolumesCurrent" id="paa_InventoryVolumesCurrent" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RatioForConversionOfNaturalGasVolumeToBarrels" id="paa_RatioForConversionOfNaturalGasVolumeToBarrels" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConversionNaturalGasToCrudeBarrelsDivisor" id="paa_ConversionNaturalGasToCrudeBarrelsDivisor" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="VulcanEnergyCorporationMember" id="paa_VulcanEnergyCorporationMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PAAVulcanGasStorageMember" id="paa_PAAVulcanGasStorageMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LynxHoldingsILLCMember" id="paa_LynxHoldingsILLCMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BluewaterNaturalGasStorageMember" id="paa_BluewaterNaturalGasStorageMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="VulcanGasStorageMember" id="paa_VulcanGasStorageMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PaaNaturalGasStorageAfterIpoMember" id="paa_PaaNaturalGasStorageAfterIpoMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PNGOmnibusAgreementMember" id="paa_PNGOmnibusAgreementMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CostsReimbursedToGeneralPartner" id="paa_CostsReimbursedToGeneralPartner" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyOwnershipInterestInGeneralPartnerPercentageSold" id="paa_RelatedPartyOwnershipInterestInGeneralPartnerPercentageSold" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfFairValueOfAssetsLiabilitiesBusinessAcquisitionTextBlock" id="paa_ScheduleOfFairValueOfAssetsLiabilitiesBusinessAcquisitionTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfPurchasePriceAllocationTableTextBlock" id="paa_ScheduleOfPurchasePriceAllocationTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AcquisitionsIn2009Member" id="paa_AcquisitionsIn2009Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AcquisitionsIn2010Member" id="paa_AcquisitionsIn2010Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="Other2010AcquisitionsMember" id="paa_Other2010AcquisitionsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RobinsonLakePipelineMember" id="paa_RobinsonLakePipelineMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LeaseGatheringBusinessMember" id="paa_LeaseGatheringBusinessMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NexenAcquisitionMember" id="paa_NexenAcquisitionMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="Other2009AcquisitionsMember" id="paa_Other2009AcquisitionsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CaplineAndAssociatedTankageMember" id="paa_CaplineAndAssociatedTankageMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AcquisitionsIn2008Member" id="paa_AcquisitionsIn2008Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="Other2008AcquisitionsMember" id="paa_Other2008AcquisitionsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AcquisitionsIn2007Member" id="paa_AcquisitionsIn2007Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CommercialRefinedProductsSupplyAndMarketingBusinessMember" id="paa_CommercialRefinedProductsSupplyAndMarketingBusinessMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TruckingBusinessMember" id="paa_TruckingBusinessMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BumsteadLPGStorageFacilityMember" id="paa_BumsteadLPGStorageFacilityMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TirzahLPGStorageFacilityAndOtherAssetsMember" id="paa_TirzahLPGStorageFacilityAndOtherAssetsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumberOfInstallmentsToPayBusinessAcquisitionContingentConsideration" id="paa_NumberOfInstallmentsToPayBusinessAcquisitionContingentConsideration" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BusinessAcquisitionContingentConsiderationPotentialCashPaymentInEachInstallment" id="paa_BusinessAcquisitionContingentConsiderationPotentialCashPaymentInEachInstallment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="NumberOfNaturalGasStorageFacilities" id="paa_NumberOfNaturalGasStorageFacilities" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="VolumeOfGasStorageCapacity" id="paa_VolumeOfGasStorageCapacity" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="VolumeOfInjectionCapacity" id="paa_VolumeOfInjectionCapacity" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="VolumeOfWithdrawalCapacity" id="paa_VolumeOfWithdrawalCapacity" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="AggregateWorkingGasStorageCapacity" id="paa_AggregateWorkingGasStorageCapacity" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="AggregatePeakInjectionCapacity" id="paa_AggregatePeakInjectionCapacity" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="AggregatePeakWithdrawalCapacityPerDay" id="paa_AggregatePeakWithdrawalCapacityPerDay" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="StorageCapacityUnderLease" id="paa_StorageCapacityUnderLease" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="PipelineTransportationCapacitySecuredFromThirdParties" id="paa_PipelineTransportationCapacitySecuredFromThirdParties" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionPurchasePricePortionPaidAtClosing" id="paa_BusinessAcquisitionPurchasePricePortionPaidAtClosing" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="DiscountRateUsedForCalculatingPresentValueOfDeferredContingentCashConsideration" id="paa_DiscountRateUsedForCalculatingPresentValueOfDeferredContingentCashConsideration" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionCandadianDollarsToUnitedStatesDollarForeignCurrencyExchangeRateOnAcquisitionDate" id="paa_BusinessAcquisitionCandadianDollarsToUnitedStatesDollarForeignCurrencyExchangeRateOnAcquisitionDate" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionMainlineCrudeOilPipelinesAcquired" id="paa_BusinessAcquisitionMainlineCrudeOilPipelinesAcquired" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionGatheringPipelinesAcquired" id="paa_BusinessAcquisitionGatheringPipelinesAcquired" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionDiameterOfPipelinesAcquired" id="paa_BusinessAcquisitionDiameterOfPipelinesAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionNumberOfTruckTerminalsAcquired" id="paa_BusinessAcquisitionNumberOfTruckTerminalsAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionTankageAcquired" id="paa_BusinessAcquisitionTankageAcquired" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionCrudeOilLinefillAcquired" id="paa_BusinessAcquisitionCrudeOilLinefillAcquired" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionSystemThroughputCapacityAcquired" id="paa_BusinessAcquisitionSystemThroughputCapacityAcquired" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionFairValueAllocationBaseGas" id="paa_BusinessAcquisitionFairValueAllocationBaseGas" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionPurchasePriceAllocationWorkingCapitalAndOtherLongTermAssetsAndLiabilities" id="paa_BusinessAcquisitionPurchasePriceAllocationWorkingCapitalAndOtherLongTermAssetsAndLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionFairValueAllocationWorkingCapitalAndOtherLongTermAssetsAndLiabilities" id="paa_BusinessAcquisitionFairValueAllocationWorkingCapitalAndOtherLongTermAssetsAndLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionPurchasePriceAllocationBaseGas" id="paa_BusinessAcquisitionPurchasePriceAllocationBaseGas" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionPurchasePriceAllocationOtherWorkingCapitalNetOfCashAcquired" id="paa_BusinessAcquisitionPurchasePriceAllocationOtherWorkingCapitalNetOfCashAcquired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionPurchasePriceAllocationCrudeOilPipelineLinefill" id="paa_BusinessAcquisitionPurchasePriceAllocationCrudeOilPipelineLinefill" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="DispositionsAbstract" id="paa_DispositionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BusinessAcquisitionPurchasePriceAllocationFutureIncomeTaxLiability" id="paa_BusinessAcquisitionPurchasePriceAllocationFutureIncomeTaxLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionPurchasePriceAllocationEnvironmentalLiabilities" id="paa_BusinessAcquisitionPurchasePriceAllocationEnvironmentalLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="AnnualizedDistributionLevelOne" id="paa_AnnualizedDistributionLevelOne" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AnnualizedDistributionLevelTwo" id="paa_AnnualizedDistributionLevelTwo" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AnnualizedDistributionLevelThree" id="paa_AnnualizedDistributionLevelThree" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AnnualizedDistributionLevelFour" id="paa_AnnualizedDistributionLevelFour" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DistributionThresholdForParticipationInDistributions" id="paa_DistributionThresholdForParticipationInDistributions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="MaximumPercentageParticipationForDistributionInExcessOfThreshold" id="paa_MaximumPercentageParticipationForDistributionInExcessOfThreshold" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherConsolidatedEquityCompensationInformationAbstract" id="paa_OtherConsolidatedEquityCompensationInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyTransactionAnnualAdministrativeServicesFee" id="paa_RelatedPartyTransactionAnnualAdministrativeServicesFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyTransactionTransitionServicesAndAssistanceFee" id="paa_RelatedPartyTransactionTransitionServicesAndAssistanceFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyTransactionAnnualAdminstrativeServicesFeeSuccessiveRenewalPeriodInYears" id="paa_RelatedPartyTransactionAnnualAdminstrativeServicesFeeSuccessiveRenewalPeriodInYears" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyTransactionAnnualAdministrativeServicesFeeEffectiveStartDate" id="paa_RelatedPartyTransactionAnnualAdministrativeServicesFeeEffectiveStartDate" type="us-types:dateStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RelatedPartyTransactionAnnualAdministrativeServicesFeeEffectiveTerminationDate" id="paa_RelatedPartyTransactionAnnualAdministrativeServicesFeeEffectiveTerminationDate" type="us-types:dateStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="RelatedPartyTransactionPurchasePriceOfAcquiredEntity" id="paa_RelatedPartyTransactionPurchasePriceOfAcquiredEntity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="RelatedPartyTransactionInitialCashInvestmentInAcquiredEntity" id="paa_RelatedPartyTransactionInitialCashInvestmentInAcquiredEntity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="RelatedPartyTransactionCreditFacilityEnteredUponAcquisition" id="paa_RelatedPartyTransactionCreditFacilityEnteredUponAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="PercentageOfOwnershipInEntityRelatedParty" id="paa_PercentageOfOwnershipInEntityRelatedParty" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyTransactionNetContributions" id="paa_RelatedPartyTransactionNetContributions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="GoodwillTranslationAdjustments" id="paa_GoodwillTranslationAdjustments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="EmployeesAndDirectorsLongTermIncentivePlanMember" id="paa_EmployeesAndDirectorsLongTermIncentivePlanMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AnnualizedVestingDistributionAmountDollars3.20Member" id="paa_AnnualizedVestingDistributionAmountDollars3.20Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RangeOfAnnualizedVestingDistributionAmountDollarsFrom1.55ToDollars1.90Member" id="paa_RangeOfAnnualizedVestingDistributionAmountDollarsFrom1.55ToDollars1.90Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AnnualizedVestingDistributionOtherRangeMember" id="paa_AnnualizedVestingDistributionOtherRangeMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RangeOfAnnualizedVestingDistributionAmountDollarsFrom3.50ToDollars4.45Member" id="paa_RangeOfAnnualizedVestingDistributionAmountDollarsFrom3.50ToDollars4.45Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RangeOfAnnualizedVestingDistributionAmountDollarsFrom3.50ToDollars4.25Member" id="paa_RangeOfAnnualizedVestingDistributionAmountDollarsFrom3.50ToDollars4.25Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NonOfficerEmployeeLongTermIncentiveTrackingUnitPlanMember" id="paa_NonOfficerEmployeeLongTermIncentiveTrackingUnitPlanMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LongTermIncentivePlansMember" id="paa_LongTermIncentivePlansMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PNGLongTermIncentivePlansMember" id="paa_PNGLongTermIncentivePlansMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PNGLongTermIncentivePlanAwardsIncludingTransactionGrantsMember" id="paa_PNGLongTermIncentivePlanAwardsIncludingTransactionGrantsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PNGTransactionGrantsMember" id="paa_PNGTransactionGrantsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EquityBasedCompensationPlanClassBUnitsOfPlainsAAPLPMember" id="paa_EquityBasedCompensationPlanClassBUnitsOfPlainsAAPLPMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PNGClassBUnitsMember" id="paa_PNGClassBUnitsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedVestingDistributionRangeAxis" id="paa_ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedVestingDistributionRangeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedVestingDistributionRangeDomain" id="paa_ShareBasedCompensationSharesOutstandingUnderEquityCompensationPlansByAnnualizedVestingDistributionRangeDomain" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearOne" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearOne" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearTwo" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearTwo" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansByAnnualizedDistributionLowerRangeLimit" id="paa_ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansByAnnualizedDistributionLowerRangeLimit" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansByAnnualizedDistributionUpperRangeLimit" id="paa_ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansByAnnualizedDistributionUpperRangeLimit" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansTimeForVesting" id="paa_ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansTimeForVesting" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansByAnnualizedDistribution" id="paa_ShareBasedCompensationSharesAuthorizedUnderEquityCompensationPlansByAnnualizedDistribution" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearThree" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearThree" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearFour" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearFour" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearFive" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInYearFive" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestGrantsInPeriod" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedAndExpectedToVestGrantsInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsNonvestedNumber" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsNonvestedNumber" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsEarnedNumber" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncludingDistributionEquivalentRightsEarnedNumber" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationByShareBasedPaymentAwardPerformanceBasedUnitsProbableAnnualizedDistributionLevel" id="paa_ShareBasedCompensationByShareBasedPaymentAwardPerformanceBasedUnitsProbableAnnualizedDistributionLevel" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PNGTransactionGrantsAbstract" id="paa_PNGTransactionGrantsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquiredInPeriod" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquiredInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquiredInPeriodWeightedAverageGrantDateFairValue" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAcquiredInPeriodWeightedAverageGrantDateFairValue" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DistributionEquivalentRightsCashPayments" id="paa_DistributionEquivalentRightsCashPayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="EquityBasedCompensationExpenseIncrementalDueToModifications" id="paa_EquityBasedCompensationExpenseIncrementalDueToModifications" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="AllocatedShareBasedCompensationExpenseDetail" id="paa_AllocatedShareBasedCompensationExpenseDetail" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodSettledInCash" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodSettledInCash" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationAbstract" id="paa_EquityBasedCompensationFairValueFutureAmortizationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearOne" id="paa_EquityBasedCompensationFairValueFutureAmortizationExpenseYearOne" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearTwo" id="paa_EquityBasedCompensationFairValueFutureAmortizationExpenseYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearThree" id="paa_EquityBasedCompensationFairValueFutureAmortizationExpenseYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearFour" id="paa_EquityBasedCompensationFairValueFutureAmortizationExpenseYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnitsEarnedOutstanding" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnitsEarnedOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpenseYearFive" id="paa_EquityBasedCompensationFairValueFutureAmortizationExpenseYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="EquityBasedCompensationFairValueFutureAmortizationExpense" id="paa_EquityBasedCompensationFairValueFutureAmortizationExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="GrantDateFairValueOfOutstandingClassBUnitsRollForward" id="paa_GrantDateFairValueOfOutstandingClassBUnitsRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionNonvestedGrantDateFairValue" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionNonvestedGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodGrantDateFairValue" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodGrantDateFairValue" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodGrantDateFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ClassBActivityRollForward" id="paa_ClassBActivityRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OutstandingUnitsRollForward" id="paa_OutstandingUnitsRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReservedForFutureGrantsOutstanding" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReservedForFutureGrantsOutstanding" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="PaymentsForWithholdingTaxes" id="paa_PaymentsForWithholdingTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="OutstandingUnitsEarnedRollForward" id="paa_OutstandingUnitsEarnedRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfPerUnitCashDistributionsAndExcessOverMinimumQuarterlyDistributionsTextBlock" id="paa_ScheduleOfPerUnitCashDistributionsAndExcessOverMinimumQuarterlyDistributionsTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfReductionInIncentiveDistributionsOnAcquisitionsTableTextBlock" id="paa_ScheduleOfReductionInIncentiveDistributionsOnAcquisitionsTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfCashDistributionsMadeTextBlock" id="paa_ScheduleOfCashDistributionsMadeTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfCapitalUnitsIssuedDuringPeriodTableTextBlock" id="paa_ScheduleOfCapitalUnitsIssuedDuringPeriodTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PercentageDistributionOfAvailableCash" id="paa_PercentageDistributionOfAvailableCash" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumberOfDaysRequiredForDistributionToUnitholdersAfterEndOfQuarter" id="paa_NumberOfDaysRequiredForDistributionToUnitholdersAfterEndOfQuarter" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PartnersCapitalAndDistributionsTable" id="paa_PartnersCapitalAndDistributionsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DistributionsAndExcessOverMinimumQuarterlyDistributionsAxis" id="paa_DistributionsAndExcessOverMinimumQuarterlyDistributionsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DistributionsAndExcessOverMinimumQuarterlyDistributionDomain" id="paa_DistributionsAndExcessOverMinimumQuarterlyDistributionDomain" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PacificEnergyPartnersLPMember" id="paa_PacificEnergyPartnersLPMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PartnersCapitalAndDistributionLineItems" id="paa_PartnersCapitalAndDistributionLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ModificationOfHoldingsUnitsModified" id="paa_ModificationOfHoldingsUnitsModified" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SubsidiaryEquityIssuanceUnitsPurchased" id="paa_SubsidiaryEquityIssuanceUnitsPurchased" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LineOfCreditFacilityEBITDAToInterestCoverageRatioMinimum" id="paa_LineOfCreditFacilityEBITDAToInterestCoverageRatioMinimum" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LineOfCreditFacilityCommitmentFeePercentageMinimum" id="paa_LineOfCreditFacilityCommitmentFeePercentageMinimum" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LineOfCreditFacilityCommitmentFeePercentageMaximum" id="paa_LineOfCreditFacilityCommitmentFeePercentageMaximum" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ModificationOfHoldingsUnitsPostModification" id="paa_ModificationOfHoldingsUnitsPostModification" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NumberOfPotentialConversionTranchesBeforeAmendedAndRestatedAgreement" id="paa_NumberOfPotentialConversionTranchesBeforeAmendedAndRestatedAgreement" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SubsidiaryEquityUnitsOwnedPostEquityIssuance" id="paa_SubsidiaryEquityUnitsOwnedPostEquityIssuance" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="NumberOfPotentialConversionTranchesAfterAmendedAndRestatedAgreement" id="paa_NumberOfPotentialConversionTranchesAfterAmendedAndRestatedAgreement" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConversionOfStockPortionOfUnitsModified" id="paa_ConversionOfStockPortionOfUnitsModified" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConstructionOfPipelineCompleted" id="paa_ConstructionOfPipelineCompleted" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GeneralPartnerDistributionRate" id="paa_GeneralPartnerDistributionRate" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GeneralPartnerIncentiveDistributionThreshold" id="paa_GeneralPartnerIncentiveDistributionThreshold" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DistributionMadeToMemberOrLimitedPartnerPerUnitOverMinimumDistributionLevel" id="paa_DistributionMadeToMemberOrLimitedPartnerPerUnitOverMinimumDistributionLevel" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ReductionInIncentiveDistributionsAbstract" id="paa_ReductionInIncentiveDistributionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ReductionInIncentiveDistrbutions" id="paa_ReductionInIncentiveDistrbutions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ReductionInFutureIncentiveDistributionsInNextTwelveMonths" id="paa_ReductionInFutureIncentiveDistributionsInNextTwelveMonths" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ReductionInAllIncentiveDistributions" id="paa_ReductionInAllIncentiveDistributions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="AggregateRemainingIncentiveDistributionReductions" id="paa_AggregateRemainingIncentiveDistributionReductions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="CashDistributionsMadeToGeneralPartnerOwnershipInterest" id="paa_CashDistributionsMadeToGeneralPartnerOwnershipInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="SubsequentDistributionPerLimitedPartnerUnitOutstanding" id="paa_SubsequentDistributionPerLimitedPartnerUnitOutstanding" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SubsequentDistributionDateOfDistribution" id="paa_SubsequentDistributionDateOfDistribution" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AllOwnershipInterestsSubsequentDistributionAmount" id="paa_AllOwnershipInterestsSubsequentDistributionAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="GeneralPartnerOwnershipInterestSubsequentDistributionAmount" id="paa_GeneralPartnerOwnershipInterestSubsequentDistributionAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="GeneralPartnerIncentiveDistributionSubsequentDistributionAmount" id="paa_GeneralPartnerIncentiveDistributionSubsequentDistributionAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="PeriodForReductionOfIncentive" id="paa_PeriodForReductionOfIncentive" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ReductionInIncentiveDistributionsPerQuarterForFirstYear" id="paa_ReductionInIncentiveDistributionsPerQuarterForFirstYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ReductionInIncentiveDistributionsPerQuarterForSecondYear" id="paa_ReductionInIncentiveDistributionsPerQuarterForSecondYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="SLCPipelineLLCMember" id="paa_SLCPipelineLLCMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PartnersCapitalCashContributionMadeByCoVenturer" id="paa_PartnersCapitalCashContributionMadeByCoVenturer" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="PartnersCapitalAccountLossOnFormationOfJointVenture" id="paa_PartnersCapitalAccountLossOnFormationOfJointVenture" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="LimitedPartnersUnitPricePerUnit" id="paa_LimitedPartnersUnitPricePerUnit" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PartnersCapitalAccountGeneralPartnerContribution" id="paa_PartnersCapitalAccountGeneralPartnerContribution" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ForeignPeriodTaxOnBookVersusTaxDifferences" id="paa_ForeignPeriodTaxOnBookVersusTaxDifferences" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ForeignPeriodTaxOnPermanentBookVersusTaxDifferences" id="paa_ForeignPeriodTaxOnPermanentBookVersusTaxDifferences" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ForeignDeferredTaxExpensesBenefitOnBookVersusTaxDifferences" id="paa_ForeignDeferredTaxExpensesBenefitOnBookVersusTaxDifferences" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ForeignFlowThroughEntitiesDeferredTaxExpensesBenefitOnBookVersusTaxDifferences" id="paa_ForeignFlowThroughEntitiesDeferredTaxExpensesBenefitOnBookVersusTaxDifferences" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ForeignIncomeTaxExpenseBenefitAtForeignStatutoryRate" id="paa_ForeignIncomeTaxExpenseBenefitAtForeignStatutoryRate" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="TexasNewMexicoMember" id="paa_TexasNewMexicoMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShellOilProductsAssetAcquisitionMember" id="paa_ShellOilProductsAssetAcquisitionMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EnvironmentalRemediationCostsForAcquisitionsSellingCompanyResponsibility" id="paa_EnvironmentalRemediationCostsForAcquisitionsSellingCompanyResponsibility" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="RemediationCostsIncurredSinceBusinessAcquired" id="paa_RemediationCostsIncurredSinceBusinessAcquired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="EnvironmentalRemediationCostsBusinessSellerShare" id="paa_EnvironmentalRemediationCostsBusinessSellerShare" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="PremiumPerSiteForEnvironmentalInsurancePolicy" id="paa_PremiumPerSiteForEnvironmentalInsurancePolicy" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="EnvironmentalInsurancePolicyTakenByThirdPartyAggregateCoverageLimit" id="paa_EnvironmentalInsurancePolicyTakenByThirdPartyAggregateCoverageLimit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="EnvironmentalInsurancePolicyExpirationDate" id="paa_EnvironmentalInsurancePolicyExpirationDate" type="us-types:durationStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MarathonPetroleumCompanyLLCMember" id="paa_MarathonPetroleumCompanyLLCMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ValeroMarketingAndSupplyCompanyMember" id="paa_ValeroMarketingAndSupplyCompanyMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConocophillipsCompanyMember" id="paa_ConocophillipsCompanyMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SouthernDistrictOfTexasPipelineReleasesMember" id="paa_SouthernDistrictOfTexasPipelineReleasesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SemCrudeLPMember" id="paa_SemCrudeLPMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PacificPipelineSystemLLCMember" id="paa_PacificPipelineSystemLLCMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PacificAtlanticTerminalsLLCMember" id="paa_PacificAtlanticTerminalsLLCMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RockyMountainPipelinesSystemLlcMember" id="paa_RockyMountainPipelinesSystemLlcMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumberOfSmallerCrudeOilReleases" id="paa_NumberOfSmallerCrudeOilReleases" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumberOfStateCourtActionsConsolidatedIntoOne" id="paa_NumberOfStateCourtActionsConsolidatedIntoOne" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NumberOfCourtActionsInFederalCourt" id="paa_NumberOfCourtActionsInFederalCourt" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EstimatedPotentialCostOfEnvironmentalRemediation" id="paa_EstimatedPotentialCostOfEnvironmentalRemediation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="NaturalResourcesContaminationDamagesSettledButAllocationDisputed" id="paa_NaturalResourcesContaminationDamagesSettledButAllocationDisputed" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="EPARequestForInformationNumberOfTruckTerminals" id="paa_EPARequestForInformationNumberOfTruckTerminals" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EnvironmentalRemediationCashExpendituresPeriodInYearsLowEndOfRange" id="paa_EnvironmentalRemediationCashExpendituresPeriodInYearsLowEndOfRange" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EnvironmentalRemediationCashExpendituresPeriodInYearsHighEndOfRange" id="paa_EnvironmentalRemediationCashExpendituresPeriodInYearsHighEndOfRange" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfDerivativeInstrumentsEffectOnOtherComprehensiveIncomeLossTableTextBlock" id="paa_ScheduleOfDerivativeInstrumentsEffectOnOtherComprehensiveIncomeLossTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherNonoperatingIncomeExpenseMember" id="paa_OtherNonoperatingIncomeExpenseMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityValue" id="paa_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityGainLossIncludedInEarnings" id="paa_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityGainLossIncludedInEarnings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityGainLossIncludedInOtherComprehensiveIncome" id="paa_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityGainLossIncludedInOtherComprehensiveIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityPurchasesSalesIssuancesSettlements" id="paa_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisDerivativeNetAssetLiabilityPurchasesSalesIssuancesSettlements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilitiesSettlements" id="paa_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilitiesSettlements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesDerivativeEnteredInto" id="paa_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetsLiabilitiesDerivativeEnteredInto" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3" id="paa_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" id="paa_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorSecuredHedgedInventoryDebtFacilityMember" id="paa_SeniorSecuredHedgedInventoryDebtFacilityMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FixedRateSeniorNotesMember" id="paa_FixedRateSeniorNotesMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GulfOpportunityZoneBondsMaturingIn2032Member" id="paa_GulfOpportunityZoneBondsMaturingIn2032Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GulfOpportunityZoneBondsMaturingIn2035Member" id="paa_GulfOpportunityZoneBondsMaturingIn2035Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PNGSeniorUnsecuredRevovlingCreditFacilityMember" id="paa_PNGSeniorUnsecuredRevovlingCreditFacilityMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInAugust2009At4.75PercentMember" id="paa_SeniorNotesDueInAugust2009At4.75PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ThreeHundredSixtyFourDaySeniorUnsecuredCreditFacilityMember" id="paa_ThreeHundredSixtyFourDaySeniorUnsecuredCreditFacilityMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInSeptember2012At4.25PercentMember" id="paa_SeniorNotesDueInSeptember2012At4.25PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInOctober2012At7.75PercentMember" id="paa_SeniorNotesDueInOctober2012At7.75PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInDecember2013At5.63PercentMember" id="paa_SeniorNotesDueInDecember2013At5.63PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInJune2014At7.13PercentMember" id="paa_SeniorNotesDueInJune2014At7.13PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInJune2015At5.25PercentMember" id="paa_SeniorNotesDueInJune2015At5.25PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInSeptember2015At6.25PercentMember" id="paa_SeniorNotesDueInSeptember2015At6.25PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInAugust2016At5.88PercentMember" id="paa_SeniorNotesDueInAugust2016At5.88PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInJanuary2017At6.13PercentMember" id="paa_SeniorNotesDueInJanuary2017At6.13PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInMay2018At6.50PercentMember" id="paa_SeniorNotesDueInMay2018At6.50PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInMay2019At8.75PercentMember" id="paa_SeniorNotesDueInMay2019At8.75PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInJanuary2020At5.75PercentMember" id="paa_SeniorNotesDueInJanuary2020At5.75PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInMay2036At6.70PercentMember" id="paa_SeniorNotesDueInMay2036At6.70PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInJanuary2037At6.65PercentMember" id="paa_SeniorNotesDueInJanuary2037At6.65PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeniorNotesDueInSeptember2015At3.95PercentMember" id="paa_SeniorNotesDueInSeptember2015At3.95PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OtherNoncurrentLongTermDebt" id="paa_OtherNoncurrentLongTermDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="Debt" id="paa_Debt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="SeniorUnsecuredRevolvingCreditFacilityMember" id="paa_SeniorUnsecuredRevolvingCreditFacilityMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CanadianSeniorUnsecuredRevolvingCreditFacilityMember" id="paa_CanadianSeniorUnsecuredRevolvingCreditFacilityMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PercentageOfFaceValueAtWhichSeniorNotesAreSold" id="paa_PercentageOfFaceValueAtWhichSeniorNotesAreSold" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="NotionalPrincipalAmountOnWhichInterestSpreadWillBeCalculated" id="paa_NotionalPrincipalAmountOnWhichInterestSpreadWillBeCalculated" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="PeriodOfMaturitiesOfNotionalPrincipalAmountOnWhichInterestSpreadWillBeCalculated" id="paa_PeriodOfMaturitiesOfNotionalPrincipalAmountOnWhichInterestSpreadWillBeCalculated" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AdditionalNotionalPrincipalAmountOnWhichInterestSpreadWillBeCalculated" id="paa_AdditionalNotionalPrincipalAmountOnWhichInterestSpreadWillBeCalculated" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="PeriodOfMaturitiesOfAdditionalNotionalPrincipalAmountOnWhichInterestSpreadWillBeCalculated" id="paa_PeriodOfMaturitiesOfAdditionalNotionalPrincipalAmountOnWhichInterestSpreadWillBeCalculated" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LineOfCreditFacilityDebtToEBITDACoverageRatio" id="paa_LineOfCreditFacilityDebtToEBITDACoverageRatio" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LineofCreditFacilityLengthOfAcquisitionPeriod" id="paa_LineofCreditFacilityLengthOfAcquisitionPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="LineOfCreditFacilityDebtToEBITDACoverageRatioDuringAcquisitionPeriod" id="paa_LineOfCreditFacilityDebtToEBITDACoverageRatioDuringAcquisitionPeriod" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DebtInstrumentDescriptionOfVariableRateBasis" id="paa_DebtInstrumentDescriptionOfVariableRateBasis" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AmountOfAcquisitionBeyondWhichRequirementOfDebtToEBITDAWillChange" id="paa_AmountOfAcquisitionBeyondWhichRequirementOfDebtToEBITDAWillChange" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="LettersOfCreditOutstandingAmount" id="paa_LettersOfCreditOutstandingAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="LongTermDebtWeightedAverageLife" id="paa_LongTermDebtWeightedAverageLife" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="ScheduleOfDebtInstrumentsShortTermAndLongTermTextBlock" id="paa_ScheduleOfDebtInstrumentsShortTermAndLongTermTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShortTermBorrowingsRepaymentPeriod" id="paa_ShortTermBorrowingsRepaymentPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DistributionDeclaredToMemberOrLimitedPartnerCashDistributionPerUnit" id="paa_DistributionDeclaredToMemberOrLimitedPartnerCashDistributionPerUnit" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DistributionPaidToMemberOrLimitedPartnerCashFlowSide" id="paa_DistributionPaidToMemberOrLimitedPartnerCashFlowSide" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="DistributionPaidToGeneralPartnerCashFlowSide" id="paa_DistributionPaidToGeneralPartnerCashFlowSide" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="PaaFinanceCorpMember" id="paa_PaaFinanceCorpMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsParticipationInDistributionsIncrements" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsParticipationInDistributionsIncrements" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsInPercentage" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsInPercentage" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPeriodForIncrementInDistributions" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPeriodForIncrementInDistributions" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRightsOnFifthAnniversaryOfDateOfGrant" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRightsOnFifthAnniversaryOfDateOfGrant" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRightsAfterFifthAnniversaryOfDateOfGrant" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingRightsAfterFifthAnniversaryOfDateOfGrant" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedNetIncome" id="paa_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedNetIncome" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="EmissionReductionCreditsUtilized" id="paa_EmissionReductionCreditsUtilized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="RelatedPartyTransactionEnvironmentalIndemnificationsCap" id="paa_RelatedPartyTransactionEnvironmentalIndemnificationsCap" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyTransactionEnvironmentalIndemnificationsCapTimePeriod" id="paa_RelatedPartyTransactionEnvironmentalIndemnificationsCapTimePeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyTransactionEnvironmentalRemediationCostsFirstCostsAmountIncurredByRelatedParty" id="paa_RelatedPartyTransactionEnvironmentalRemediationCostsFirstCostsAmountIncurredByRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="PNGMember" id="paa_PNGMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeriesASubordinatedUnitsMember" id="paa_SeriesASubordinatedUnitsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SeriesBSubordinatedUnitsMember" id="paa_SeriesBSubordinatedUnitsMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CommonUnitAndSeriesASubordinatedUnitMember" id="paa_CommonUnitAndSeriesASubordinatedUnitMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ModificationOfHoldingsByTrancheAxis" id="paa_ModificationOfHoldingsByTrancheAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PerformanceThresholdsAbstract" id="paa_PerformanceThresholdsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SubordinatedUnitsDistributionAvailableThresholdAnnualized" id="paa_SubordinatedUnitsDistributionAvailableThresholdAnnualized" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MinimumWorkingGasStorageCapacity" id="paa_MinimumWorkingGasStorageCapacity" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="SubordinatedUnitsDistributionAvailableThresholdQuarterly" id="paa_SubordinatedUnitsDistributionAvailableThresholdQuarterly" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConversionOfSubordinatedUnitsNumberOfConsecutiveQuartersOfDistributionRequired" id="paa_ConversionOfSubordinatedUnitsNumberOfConsecutiveQuartersOfDistributionRequired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SubordinatedUnitsDistributionReceivedThresholdAnnualized" id="paa_SubordinatedUnitsDistributionReceivedThresholdAnnualized" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConversionOfSubordinatedUnitToCommonUnitsTerms" id="paa_ConversionOfSubordinatedUnitToCommonUnitsTerms" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConversionOfSubordinatedUnitsNumberOfUnitsToBeConverted" id="paa_ConversionOfSubordinatedUnitsNumberOfUnitsToBeConverted" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SubordinatedUnitConversionRatio" id="paa_SubordinatedUnitConversionRatio" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ConversionOfSubordinatedUnitsNumberOfConsecutiveQuartersOfDistributionSufficiencyRequired" id="paa_ConversionOfSubordinatedUnitsNumberOfConsecutiveQuartersOfDistributionSufficiencyRequired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SubordinatedUnitsDistributionReceivedThresholdQuarterly" id="paa_SubordinatedUnitsDistributionReceivedThresholdQuarterly" type="us-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ModificationOfHoldingsByTrancheDomain" id="paa_ModificationOfHoldingsByTrancheDomain" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TrancheOneMember" id="paa_TrancheOneMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TrancheTwoMember" id="paa_TrancheTwoMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TrancheThreeMember" id="paa_TrancheThreeMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TrancheFourMember" id="paa_TrancheFourMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="TrancheFiveMember" id="paa_TrancheFiveMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LineOfCreditFacilityTenureOfFacility" id="paa_LineOfCreditFacilityTenureOfFacility" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="SeniorNotesDueInFebruary2021At5.00PercentMember" id="paa_SeniorNotesDueInFebruary2021At5.00PercentMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PriceRiskDerivativeAmountUsedToFundHedgeInventory" id="paa_PriceRiskDerivativeAmountUsedToFundHedgeInventory" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" id="paa_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueAssetsLiabilitiesMeasuredOnRecurringBasisDisclosureItemsAxis" id="paa_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisDisclosureItemsAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueAssetsLiabilitiesMeasuredOnRecurringBasisDisclosureItemsDomain" id="paa_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisDisclosureItemsDomain" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LongTermDebtMaturitiesFairValueHedgeAdjustment" id="paa_LongTermDebtMaturitiesFairValueHedgeAdjustment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="LongTermDebtMaturitiesOtherLongTermObligationsExcluded" id="paa_LongTermDebtMaturitiesOtherLongTermObligationsExcluded" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="StandbyLetterOfCreditIssuancePeriodUpperLimit" id="paa_StandbyLetterOfCreditIssuancePeriodUpperLimit" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="GainLossOnSaleOfPropertyPlantEquipmentDescription" id="paa_GainLossOnSaleOfPropertyPlantEquipmentDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CrudeOilRefinedProductsAndLpgPurchasesAndRelatedCostsBuySellTransactions" id="paa_CrudeOilRefinedProductsAndLpgPurchasesAndRelatedCostsBuySellTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="OtherAssetsNoncurrentCondensedConsolidatingFinancials" id="paa_OtherAssetsNoncurrentCondensedConsolidatingFinancials" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="TruckingEquipmentAndOtherMember" id="paa_TruckingEquipmentAndOtherMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="InventoryTypeDomain" id="paa_InventoryTypeDomain" type="us-types:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GoodwillPolicyTextBlock" id="paa_GoodwillPolicyTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="IntangibleAssetsPolicyTextBlock" id="paa_IntangibleAssetsPolicyTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BusinessAcquisitionNumberOfOperationalNaturalGasStorageCavernsAcquired" id="paa_BusinessAcquisitionNumberOfOperationalNaturalGasStorageCavernsAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionNumberOfPermittedNaturalGasStorageCavernsAcquired" id="paa_BusinessAcquisitionNumberOfPermittedNaturalGasStorageCavernsAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionVolumeOfPermittedGasStorageCavernCapacity" id="paa_BusinessAcquisitionVolumeOfPermittedGasStorageCavernCapacity" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionNumberOfPipelinesAvailable" id="paa_BusinessAcquisitionNumberOfPipelinesAvailable" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="AcquisitionsIn2011Member" id="paa_AcquisitionsIn2011Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SouthernPinesAcquisitionMember" id="paa_SouthernPinesAcquisitionMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="BusinessAcquisitionFairValueAllocationAmortizableIntangibleAssets" id="paa_BusinessAcquisitionFairValueAllocationAmortizableIntangibleAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="AcquisitionPurchasePriceAllocationNoncurrentAssets" id="paa_AcquisitionPurchasePriceAllocationNoncurrentAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionPurchasePriceAllocationInventoryAndOtherWorkingCapital" id="paa_BusinessAcquisitionPurchasePriceAllocationInventoryAndOtherWorkingCapital" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element name="NumberOfAdditionalBusinessesAcquired" id="paa_NumberOfAdditionalBusinessesAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfBusinessAcquisitionPurchasePriceTextBlock" id="paa_ScheduleOfBusinessAcquisitionPurchasePriceTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ScheduleOfBusinessAcquisitionPurchasePriceAcquisition2TextBlock" id="paa_ScheduleOfBusinessAcquisitionPurchasePriceAcquisition2TextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PAANaturalGasStorageAcquisitionMember" id="paa_PAANaturalGasStorageAcquisitionMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="AcquisitionsIn2005Member" id="paa_AcquisitionsIn2005Member" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ECIAcquisitionMember" id="paa_ECIAcquisitionMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SaleOfStockNumberOfSharesIssuedToParentInTransaction" id="paa_SaleOfStockNumberOfSharesIssuedToParentInTransaction" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PaymentsForPurchaseOfPrivatePlacementUnits" id="paa_PaymentsForPurchaseOfPrivatePlacementUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="SubsidiaryProceedsFromGeneralPartnerContribution" id="paa_SubsidiaryProceedsFromGeneralPartnerContribution" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="MinorityInterestOther" id="paa_MinorityInterestOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedNumber" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIssuedNumber" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="ForwardStartingInterestRateSwapMember" id="paa_ForwardStartingInterestRateSwapMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ForwardStartingThirtyYearInterestRateSwapMember" id="paa_ForwardStartingThirtyYearInterestRateSwapMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ForwardStartingTenYearInterestRateSwapMember" id="paa_ForwardStartingTenYearInterestRateSwapMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="DerivativeInstrumentsHedgeGainLossRecognizedInEarnings" id="paa_DerivativeInstrumentsHedgeGainLossRecognizedInEarnings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="DerivativeInstrumentsCashFlowHedgeGainLossRecognizedInIncomeNet" id="paa_DerivativeInstrumentsCashFlowHedgeGainLossRecognizedInIncomeNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="CashFlowHedgeGainLossToBeReclassifiedInYearTwoAndThree" id="paa_CashFlowHedgeGainLossToBeReclassifiedInYearTwoAndThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyOwnershipPercentageInGeneralPartnerPriorToTransaction" id="paa_RelatedPartyOwnershipPercentageInGeneralPartnerPriorToTransaction" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyOwnershipPercentageInGeneralPartner" id="paa_RelatedPartyOwnershipPercentageInGeneralPartner" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="OccidentalPetroleumCorporationMember" id="paa_OccidentalPetroleumCorporationMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="RelatedPartyOwnershipInterestInGeneralPartnerPercentage" id="paa_RelatedPartyOwnershipInterestInGeneralPartnerPercentage" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SaleOfStockPercentOfEquityIssuedInTransaction" id="paa_SaleOfStockPercentOfEquityIssuedInTransaction" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PurchaseOfStockParentPercentageOfOwnershipInSubsidiaryBeforeOffering" id="paa_PurchaseOfStockParentPercentageOfOwnershipInSubsidiaryBeforeOffering" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="PurchaseOfStockParentPercentageOfOwnershipInSubsidiaryContributedInOffering" id="paa_PurchaseOfStockParentPercentageOfOwnershipInSubsidiaryContributedInOffering" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="SaleOfStockConsiderationReceivedOnTransactionFromParent" id="paa_SaleOfStockConsiderationReceivedOnTransactionFromParent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeitedInPeriod" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeitedInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValueForfeited" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValueForfeited" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedInPeriod" id="paa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEarnedInPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="InventoryAxis" id="paa_InventoryAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="LineOfCreditFacilityRenewalDate" id="paa_LineOfCreditFacilityRenewalDate" type="us-types:dateStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="CoIssuerOfDebtOwnershipPercentage" id="paa_CoIssuerOfDebtOwnershipPercentage" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" id="paa_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MinorityInterestOwnershipPercentageAcquiredByNoncontrollingOwners" id="paa_MinorityInterestOwnershipPercentageAcquiredByNoncontrollingOwners" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionFairValueAllocationNoncurrentLiabilitiesLongTermDebt" id="paa_BusinessAcquisitionFairValueAllocationNoncurrentLiabilitiesLongTermDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="IPOSaleOfStockNumberofSharesIssuedAtClosing" id="paa_IPOSaleOfStockNumberofSharesIssuedAtClosing" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="InterestExpenseContangoInventoryPurchases" id="paa_InterestExpenseContangoInventoryPurchases" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="DerivativeInstrumentsHedgingRelationshipsGainLossRecognizedInEarningsInterestExpense" id="paa_DerivativeInstrumentsHedgingRelationshipsGainLossRecognizedInEarningsInterestExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="GoodwillDisclosureAbstract" id="paa_GoodwillDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="GoodwillDisclosureTextBlock" id="paa_GoodwillDisclosureTextBlock" type="us-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="InterestRateContractAndCommodityContractMember" id="paa_InterestRateContractAndCommodityContractMember" type="us-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersFromLevel3ToLevel2" id="paa_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersFromLevel3ToLevel2" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="InsuranceAbstract" id="paa_InsuranceAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="MinimumPercentageOf2010RenewalCoverageLimit" id="paa_MinimumPercentageOf2010RenewalCoverageLimit" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="PeriodOfPurchaseOfHurricaneLimit" id="paa_PeriodOfPurchaseOfHurricaneLimit" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration"/>
  <xsd:element name="HurricaneInsuranceCoverage" id="paa_HurricaneInsuranceCoverage" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="ProceedsFromDerivativeInstrumentFinancingActivities" id="paa_ProceedsFromDerivativeInstrumentFinancingActivities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="BusinessAcquisitionPurchasePriceEscrowedPercentage" id="paa_BusinessAcquisitionPurchasePriceEscrowedPercentage" type="us-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant"/>
  <xsd:element name="BusinessAcquisitionPurchasePriceAdjustmentAmountReceived" id="paa_BusinessAcquisitionPurchasePriceAdjustmentAmountReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="LossContingencyProvisionForPenaltyPayable" id="paa_LossContingencyProvisionForPenaltyPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="LossContingencyCommitmentForEnvironmentProject" id="paa_LossContingencyCommitmentForEnvironmentProject" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element name="PaymentsForProceedsFromSalePurchaseOfInterestInSubsidiaries" id="paa_PaymentsForProceedsFromSalePurchaseOfInterestInSubsidiaries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element name="PartnersCapitalIncreaseFromSubsidiaryStockIssuance" id="paa_PartnersCapitalIncreaseFromSubsidiaryStockIssuance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element name="RainbowPipelineCrudeOilRelease" id="paa_RainbowPipelineCrudeOilRelease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration"/>
</xsd:schema>
</XBRL>
