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Organization and Basis of Consolidation and Presentation - Organization/Reverse Stock Split (Details)
shares in Millions, $ in Millions
6 Months Ended
Nov. 15, 2016
USD ($)
shares
Jun. 30, 2017
USD ($)
segment
shares
Dec. 31, 2016
USD ($)
Organization and basis of presentation      
Operating segments number | segment   3  
Deferred tax asset | $   $ 2,214 $ 1,876
AAP | GP LLC      
Organization and basis of presentation      
Ownership interest in the subsidiary (units)   1.0  
PAA | AAP      
Organization and basis of presentation      
Ownership interest in the subsidiary   36.00%  
Ownership interest in the subsidiary (units)   288.3  
GP LLC      
Organization and basis of presentation      
Ownership interest in the subsidiary   100.00%  
AAP      
Organization and basis of presentation      
Ownership interest in the subsidiary   53.00%  
Ownership interest in the subsidiary (units)   152.5  
Class Shares      
Organization and basis of presentation      
Reverse stock split conversion ratio 0.3755    
Simplification Transactions | PAA GP | PAA      
Organization and basis of presentation      
Economic general partner interest converted into non-economic interest 2.00%    
Consolidated Entity Excluding VIE      
Organization and basis of presentation      
Deferred tax asset | $   $ 2,214 $ 1,876
AAP | Simplification Transactions | PAA      
Organization and basis of presentation      
Units agreed to be issued in connection with the Simplification Transaction 245.5    
Units to be issued in the future 0.8    
AAP Senior Secured Credit Agreement | AAP | Simplification Transactions | PAA      
Organization and basis of presentation      
Debt assumed | $ $ 642