CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
REVENUES
Supply and Logistics segment revenues	$ 5,573	$ 4,876	$ 17,749	$ 13,344
Transportation segment revenues	160	159	459	482
Facilities segment revenues	140	135	410	405
Total revenues	5,873	5,170	18,618	14,231
COSTS AND EXPENSES
Purchases and related costs	5,327	4,429	16,239	12,000
Field operating costs	283	289	876	893
General and administrative expenses	68	71	213	212
Depreciation and amortization	152	33	403	352
Total costs and expenses	5,830	4,822	17,731	13,457
OPERATING INCOME	43	348	887	774
OTHER INCOME/(EXPENSE)
Equity earnings in unconsolidated entities	80	46	201	133
Interest expense (net of capitalized interest of $11, $11, $26 and $37, respectively)	(134)	(116)	(390)	(349)
Other income/(expense), net	(1)	17	(6)	46
INCOME/(LOSS) BEFORE TAX	(12)	295	692	604
Current income tax benefit/(expense)	1	(4)	(9)	(45)
Deferred income tax benefit/(expense)	42	(12)	(76)	(21)
NET INCOME	31	279	607	538
Net income attributable to noncontrolling interests	(27)	(255)	(538)	(436)
NET INCOME ATTRIBUTABLE TO PAGP	$ 4	$ 24	$ 69	$ 102
Class A Shares
BASIC AND DILUTED NET INCOME PER CLASS A SHARE
BASIC NET INCOME PER CLASS A SHARE (usd per share)	$ 0.03	$ 0.24	$ 0.49	$ 1.03
DILUTED NET INCOME PER CLASS A SHARE (usd per share)	$ 0.03	$ 0.24	$ 0.49	$ 1.02
BASIC WEIGHTED AVERAGE CLASS A SHARES OUTSTANDING (shares)	154	101	142	99
DILUTED WEIGHTED AVERAGE CLASS A SHARES OUTSTANDING (shares)	154	101	142	236