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Net Income Per Limited Partner Unit (Details 2) (USD $) | 3 Months Ended
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Mar. 31, 2013
Basic and Diluted Net Income per Limited Partner Unit |
Basic net income per limited partner unit impact (in dollars per unit) | $ (0.34)
Diluted net income per limited partner unit impact (in dollars per unit) | $ (0.34)

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- Details
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Namespace Prefix: | paa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The per unit impact on basic net income per limited partner unit in the event of allocation of undistributed earnings to incentive distribution rights holders. + References No definition available. + Details
Name: | paa_PerUnitImpactToNetIncomeLossPerOutstandingLimitedPartnershipUnitBasic
Namespace Prefix: | paa_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition The per unit impact on diluted net income per limited partner unit in the event of allocation of undistributed earnings to incentive distribution rights holders. + References No definition available. + Details
Name: | paa_PerUnitImpactToNetIncomeLossPerOutstandingLimitedPartnershipUnitDiluted
Namespace Prefix: | paa_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration