Investments in Unconsolidated Affiliates (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	$ 2,332		$ 2,332		$ 2,352
Equity in income of unconsolidated affiliates by business segment [Abstract]
Equity in income of unconsolidated affiliates	121	$ 107	225	$ 224
NGL Pipelines & Services [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	622		622		640
Equity in income of unconsolidated affiliates by business segment [Abstract]
Equity in income of unconsolidated affiliates	30	36	69	70
Crude Oil Pipelines & Services [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	1,675		1,675		1,677
Equity in income of unconsolidated affiliates by business segment [Abstract]
Equity in income of unconsolidated affiliates	88	70	152	151
Natural Gas Pipelines & Services [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	32		32		32
Equity in income of unconsolidated affiliates by business segment [Abstract]
Equity in income of unconsolidated affiliates	2	0	3	2
Petrochemical & Refined Products Services [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	3		3		$ 3
Equity in income of unconsolidated affiliates by business segment [Abstract]
Equity in income of unconsolidated affiliates	$ 1	$ 1	$ 1	$ 1