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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Statement of Comprehensive Income [Abstract]      
Net income $ 858 $ 730 $ 906
Other comprehensive income/(loss) 239 72 (614)
Comprehensive income 1,097 802 292
Comprehensive income attributable to noncontrolling interests (2) (4) (3)
Comprehensive income attributable to PAA $ 1,095 $ 798 $ 289