Partners' Capital and Distributions - Consolidated Joint Venture Distributions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Partners' Capital and Distributions [Line Items]
Total distributions paid	$ 418	$ 383	$ 874	$ 770
Noncontrolling Interests
Partners' Capital and Distributions [Line Items]
Total distributions paid	343	320	724	645
Cash Distribution | Noncontrolling Interests | Consolidated Joint Venture Entities
Partners' Capital and Distributions [Line Items]
Total distributions paid	97	97	229	198
Cash Distribution | Noncontrolling Interests | Permian JV
Partners' Capital and Distributions [Line Items]
Total distributions paid	78	74	183	148
Cash Distribution | Noncontrolling Interests | Cactus II
Partners' Capital and Distributions [Line Items]
Total distributions paid	16	16	38	37
Cash Distribution | Noncontrolling Interests | Red River
Partners' Capital and Distributions [Line Items]
Total distributions paid	$ 3	$ 7	$ 8	$ 13