Partners' Capital and Distributions - Noncontrolling Interest in Subsidiaries (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Noncontrolling Interest [Line Items]
Distributions paid	$ 235	$ 185
Permian JV
Noncontrolling Interest [Line Items]
Noncontrolling interests in subsidiaries (percent)	35.00%
Red River LLC
Noncontrolling Interest [Line Items]
Noncontrolling interests in subsidiaries (percent)	33.00%
Noncontrolling Interests
Noncontrolling Interest [Line Items]
Distributions paid	$ 59	$ 6
Permian JV | Noncontrolling Interests
Noncontrolling Interest [Line Items]
Distributions paid	54
Red River LLC | Noncontrolling Interests
Noncontrolling Interest [Line Items]
Distributions paid	$ 5