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Organization and Basis of Consolidaton and Presentation (Details)
9 Months Ended
Sep. 30, 2015
segment
shares
Organization and basis of presentation  
Operating segments number 3
GP LLC  
Organization and basis of presentation  
Consolidated subsidiary, ownership interest held by the parent (as a percent) 100.00%
AAP  
Organization and basis of presentation  
Consolidated subsidiary, ownership interest held by the parent (as a percent) 37.00%
Consolidated subsidiary, ownership interest held by the parent (in units) | shares 227,204,958
AAP | PAA | Indirect Ownership  
Organization and basis of presentation  
General partner or managing member ownership interest (as a percent) 2.00%
PAA GP | PAA  
Organization and basis of presentation  
General partner or managing member ownership interest (as a percent) 2.00%