CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS)
Net income	$ 228	$ 311	$ 593	$ 958
Other comprehensive loss	(311)	(167)	(518)	(211)
Comprehensive income/(loss)	(83)	144	75	747
Comprehensive (income)/loss attributable to noncontrolling interests	113	(129)	14	(703)
Comprehensive income attributable to PAGP	$ 30	$ 15	$ 89	$ 44