CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
REVENUES
Total revenues	$ 42,078	$ 23,290	$ 33,669
COSTS AND EXPENSES
Purchases and related costs	38,504	20,431	29,452
Field operating costs	1,065	1,076	1,303
General and administrative expenses	298	276	302
Depreciation and amortization	777	656	604
(Gains)/losses on asset sales and asset impairments, net (Note 6, Note 7)	592	719	28
Goodwill impairment losses (Note 8)	0	2,515	0
Total costs and expenses	41,236	25,673	31,689
OPERATING INCOME/(LOSS)	842	(2,383)	1,980
OTHER INCOME/(EXPENSE)
Equity earnings in unconsolidated entities	274	355	388
Gain on/(impairment of) investments in unconsolidated entities, net (Note 9)	2	(182)	271
Interest expense (net of capitalized interest of $18, $24 and $34, respectively)	(425)	(436)	(425)
Other income, net	19	39	24
INCOME/(LOSS) BEFORE TAX	712	(2,607)	2,238
Current income tax expense	(50)	(51)	(112)
Deferred income tax (expense)/benefit	(62)	218	(64)
NET INCOME/(LOSS)	600	(2,440)	2,062
Net (income)/loss attributable to noncontrolling interests	(540)	1,872	(1,731)
NET INCOME/(LOSS) ATTRIBUTABLE TO PAGP	60	(568)	331
Product sales revenues
REVENUES
Total revenues	40,883	22,058	32,272
Services revenues
REVENUES
Total revenues	$ 1,195	$ 1,232	$ 1,397
Class A Shares
OTHER INCOME/(EXPENSE)
Basic weighted average Class A shares outstanding (in shares)	194	186	168
Basic net income/(loss) per Class A share (in dollars per share)	$ 0.31	$ (3.06)	$ 1.97
Diluted weighted average Class A shares outstanding (in shares)	194	246	170
Diluted net income/(loss) per Class A share (in dollars per share)	$ 0.31	$ (3.07)	$ 1.96