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v2.4.1.9

Partners' Capital and Distributions (Details 5) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Partners Capital and Distribution |  |  |
Units Issued |  |  | 23,563,707 us-gaap_PartnersCapitalAccountUnitsSaleOfUnits
Net proceeds from sale | $ 866 us-gaap_PartnersCapitalAccountSaleOfUnits | $ 477 us-gaap_PartnersCapitalAccountSaleOfUnits | $ 979 us-gaap_PartnersCapitalAccountSaleOfUnits
Contribution from general partner | 18 us-gaap_GeneralPartnersContributedCapital | 9 us-gaap_GeneralPartnersContributedCapital | 20 us-gaap_GeneralPartnersContributedCapital
Continuous Offering Program |  |  |
Partners Capital and Distribution |  |  |
Units Issued | 15,375,810 us-gaap_PartnersCapitalAccountUnitsSaleOfUnits / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember | 8,644,807 us-gaap_PartnersCapitalAccountUnitsSaleOfUnits / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember | 12,063,707 us-gaap_PartnersCapitalAccountUnitsSaleOfUnits / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember
Net proceeds from sale | 866 us-gaap_PartnersCapitalAccountSaleOfUnits / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember | 477 us-gaap_PartnersCapitalAccountSaleOfUnits / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember | 524 us-gaap_PartnersCapitalAccountSaleOfUnits / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember
Commissions paid | 9 paa_CommissionPaidToSalesAgent / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember | 5 paa_CommissionPaidToSalesAgent / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember | 6 paa_CommissionPaidToSalesAgent / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember
Continuous Offering Program | Minimum |  |  |
Partners Capital and Distribution |  |  |
Aggregate offer price of common stock |  |  | 300 paa_AggregateCommonStockOfferPrice / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember
Continuous Offering Program | Maximum |  |  |
Partners Capital and Distribution |  |  |
Aggregate offer price of common stock | 900 paa_AggregateCommonStockOfferPrice / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_SubsidiarySaleOfStockAxis = paa_ContinuousOfferingProgramMember |  |
Marketed Offering |  |  |
Partners Capital and Distribution |  |  |
Units Issued |  |  | 11,500,000 us-gaap_PartnersCapitalAccountUnitsSaleOfUnits / us-gaap_SubsidiarySaleOfStockAxis = paa_MarketedOfferingsMember
Net proceeds from sale |  |  | $ 455 us-gaap_PartnersCapitalAccountSaleOfUnits / us-gaap_SubsidiarySaleOfStockAxis = paa_MarketedOfferingsMember

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- Definition Represents the aggregate offering price for which an entity may issue and sell common units through a specific equity distribution agreement. + References No definition available. + Details
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- Definition Represents the costs incurred for commissions paid to the agent under the equity distribution agreement. + References No definition available. + Details
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- Details
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- Definition The amount of capital contributed by the general partner. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
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- Definition Total change in each class of partners' capital accounts during the year due to the sale of units. All partners include general, limited and preferred partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
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- Definition Total units issued during the year due to the sale of units. All partners include general, limited and preferred partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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