CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($) $ in Millions	Total	Noncontrolling Interests	Class A Shares Limited Partners
Balance, beginning of period at Dec. 31, 2018	$ 13,319	$ 11,473	$ 1,846
Increase (Decrease) in Partners' Capital
Net income/(loss)	2,062	1,731	331
Distributions (Note 12)	(1,208)	(977)	(231)
Deferred tax asset (Note 15)	86		86
Change in ownership interest in connection with Exchange Right exercises (Note 12)		(101)	101
Other comprehensive income	97	74	23
Equity-indexed compensation expense	18	13	5
Sale of noncontrolling interest in a subsidiary (Note 12)	128	128
Other	(17)	(11)	(6)
Balance, end of period at Dec. 31, 2019	14,485	12,330	2,155
Increase (Decrease) in Partners' Capital
Net income/(loss)	(2,440)	(1,872)	(568)
Distributions (Note 12)	(863)	(697)	(166)
Deferred tax asset (Note 15)	16		16
Change in ownership interest in connection with Exchange Right exercises (Note 12)		(10)	10
Other comprehensive income	15	9	6
Equity-indexed compensation expense	20	14	6
Repurchase of common units by a subsidiary (Note 12)	(50)	(54)	4
Partners' Capital Account, Contributions (Note 12)	12	12
Other	(5)	(6)	1
Balance, end of period at Dec. 31, 2020	11,190	9,726	1,464
Increase (Decrease) in Partners' Capital
Net income/(loss)	600	540	60
Distributions (Note 12)	(729)	(589)	(140)
Deferred tax asset (Note 15)	(42)		(42)
Other comprehensive income	65	48	17
Equity-indexed compensation expense	20	14	6
Repurchase of common units by a subsidiary (Note 12)	(178)	(180)	2
Partners' Capital Account, Contributions (Note 12)	1	1
Plains Oryx Permian Basin LLC joint venture formation (Note 7)	3,256	3,090	166
Other	(6)	(6)
Balance, end of period at Dec. 31, 2021	$ 14,177	$ 12,644	$ 1,533