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Intangible Assets and Goodwill (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Identifiable intangible assets [Abstract]
Gross Value	$ 5,901		$ 5,901		$ 5,897
Accumulated Amortization	(2,282)		(2,282)		(2,127)
Carrying Value	3,619		3,619		3,770
Amortization expense	54	$ 52	155	$ 148
Forecasted amortization expense [Abstract]
Remainder of 2024	53		53
2025	209		209
2026	203		203
2027	185		185
2028	181		181
NGL Pipelines & Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	1,203		1,203		1,201
Accumulated Amortization	(406)		(406)		(373)
Carrying Value	797		797		828
Amortization expense	12	10	33	29
NGL Pipelines & Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	449		449		449
Accumulated Amortization	(273)		(273)		(263)
Carrying Value	176		176		186
NGL Pipelines & Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	754		754		752
Accumulated Amortization	(133)		(133)		(110)
Carrying Value	621		621		642
Crude Oil Pipelines & Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	2,478		2,478		2,478
Accumulated Amortization	(883)		(883)		(805)
Carrying Value	1,595		1,595		1,673
Amortization expense	27	28	78	76
Crude Oil Pipelines & Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	2,195		2,195		2,195
Accumulated Amortization	(606)		(606)		(530)
Carrying Value	1,589		1,589		1,665
Crude Oil Pipelines & Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	283		283		283
Accumulated Amortization	(277)		(277)		(275)
Carrying Value	6		6		8
Natural Gas Pipelines & Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	1,994		1,994		1,992
Accumulated Amortization	(873)		(873)		(834)
Carrying Value	1,121		1,121		1,158
Amortization expense	13	12	39	37
Natural Gas Pipelines & Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	1,351		1,351		1,351
Accumulated Amortization	(653)		(653)		(625)
Carrying Value	698		698		726
Natural Gas Pipelines & Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	643		643		641
Accumulated Amortization	(220)		(220)		(209)
Carrying Value	423		423		432
Petrochemical & Refined Products Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	226		226		226
Accumulated Amortization	(120)		(120)		(115)
Carrying Value	106		106		111
Amortization expense	2	$ 2	5	$ 6
Petrochemical & Refined Products Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	181		181		181
Accumulated Amortization	(90)		(90)		(86)
Carrying Value	91		91		95
Petrochemical & Refined Products Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	45		45		45
Accumulated Amortization	(30)		(30)		(29)
Carrying Value	$ 15		$ 15		$ 16