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Derivatives and Risk Management Activities - Broker Receivable/Payable (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016
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Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |
Initial margin | $ 55 | $ 119
Variation margin posted/(returned) | (43) | 291
Net broker receivable/(payable) | $ 12 | $ 410

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- Definition The amount of cash or securities required by a broker or counterparty as security for a trading or derivatives securities position. + References No definition available. + Details
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Namespace Prefix: | paa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Cash posted by (returned to) the reporting entity to (from) a broker or counterparty to comply with initial margin requirements. + References No definition available. + Details
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Namespace Prefix: | paa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Amount of right to receive cash collateral under master netting arrangements offset against derivative liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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