Partners' Capital and Distributions - Noncontrolling Interest in Subsidiaries (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Noncontrolling Interest [Line Items]
Distributions paid	$ 264	$ 179	$ 500	$ 365
Permian JV
Noncontrolling Interest [Line Items]
Noncontrolling interests in subsidiaries (percent)	35.00%		35.00%
Red River LLC
Noncontrolling Interest [Line Items]
Noncontrolling interests in subsidiaries (percent)	33.00%		33.00%
Noncontrolling Interests
Noncontrolling Interest [Line Items]
Distributions paid	$ 62		$ 121	$ 6
Permian JV | Noncontrolling Interests | Cash Distribution
Noncontrolling Interest [Line Items]
Distributions paid			112
Red River LLC | Noncontrolling Interests | Cash Distribution
Noncontrolling Interest [Line Items]
Distributions paid			$ 9