CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($) $ in Millions	Total	Plains Oryx Permian Basin LLC Joint Venture Formation	Cactus II Pipeline LLC	Noncontrolling Interests	Noncontrolling Interests Plains Oryx Permian Basin LLC Joint Venture Formation	Noncontrolling Interests Cactus II Pipeline LLC	Limited Partners Class A Shares Partners’ Capital	Limited Partners Class A Shares Partners’ Capital Plains Oryx Permian Basin LLC Joint Venture Formation
Balance, beginning of period at Dec. 31, 2020	$ 11,190			$ 9,726			$ 1,464
Increase (Decrease) in Partners' Capital
Net income	600			540			60
Distributions (Note 11)	(729)			(589)			(140)
Deferred tax asset (Note 14)	(42)						(42)
Other comprehensive income/(loss) (Note 11)	65			48			17
Equity-indexed compensation expense	20			14			6
Repurchase of common units by a subsidiary (Note 11)	(178)			(180)			2
Contributions from noncontrolling interests	1			1
Partners' capital impact of business combination (Note 7)		$ 3,256			$ 3,090			$ 166
Other	(6)			(6)
Balance, end of period at Dec. 31, 2021	14,177			12,644			1,533
Increase (Decrease) in Partners' Capital
Net income	1,163			995			168
Distributions (Note 11)	(1,083)			(921)			(162)
Deferred tax asset (Note 14)	5						5
Other comprehensive income/(loss) (Note 11)	(101)			(73)			(28)
Equity-indexed compensation expense	33			23			10
Repurchase of common units by a subsidiary (Note 11)	(74)			(76)			2
Contributions from noncontrolling interests	26			26
Partners' capital impact of business combination (Note 7)		$ (26)	$ 526		$ (23)	$ 526		$ (3)
Other	(8)			(7)			(1)
Balance, end of period at Dec. 31, 2022	14,638			13,114			1,524
Increase (Decrease) in Partners' Capital
Net income	1,425			1,227			198
Distributions (Note 11)	(1,330)			(1,121)			(209)
Deferred tax asset (Note 14)	(2)						(2)
Other comprehensive income/(loss) (Note 11)	118			85			33
Equity-indexed compensation expense	37			26			11
Contributions from noncontrolling interests	106			106
Other	(20)			(13)			(7)
Balance, end of period at Dec. 31, 2023	$ 14,972			$ 13,424			$ 1,548