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Operating Segments (Details 2) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Reconciliation of segment profit to net income attributable to PAA    
Segment profit $ 609 $ 748
Depreciation and amortization (96) (82)
Interest expense, net (78) (77)
Other expense, net (2)  
Income tax expense (48) (53)
NET INCOME 385 536
Net income attributable to noncontrolling interests (1) (8)
NET INCOME ATTRIBUTABLE TO PAA $ 384 $ 528