The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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Intangible Assets and Goodwill (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Identifiable intangible assets [Abstract]
Gross Value	$ 5,891		$ 5,891		$ 4,900
Accumulated Amortization	(1,881)		(1,881)		(1,749)
Carrying Value	4,010		4,010		3,151
Amortization expense	46	$ 39	132	$ 113
Forecasted amortization expense [Abstract]
Remainder of 2022	50		50
2023	200		200
2024	222		222
2025	230		230
2026	237		237
NGL Pipelines & Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	1,198		1,198		614
Accumulated Amortization	(324)		(324)		(297)
Carrying Value	874		874		317
Amortization expense	10	6	27	18
NGL Pipelines & Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	449		449		449
Accumulated Amortization	(245)		(245)		(236)
Carrying Value	204		204		213
NGL Pipelines & Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	749		749		165
Accumulated Amortization	(79)		(79)		(61)
Carrying Value	670		670		104
Crude Oil Pipelines & Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	2,478		2,478		2,478
Accumulated Amortization	(680)		(680)		(618)
Carrying Value	1,798		1,798		1,860
Amortization expense	21	20	62	57
Crude Oil Pipelines & Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	2,195		2,195		2,195
Accumulated Amortization	(411)		(411)		(355)
Carrying Value	1,784		1,784		1,840
Crude Oil Pipelines & Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	283		283		283
Accumulated Amortization	(269)		(269)		(263)
Carrying Value	14		14		20
Natural Gas Pipelines & Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	1,989		1,989		1,582
Accumulated Amortization	(771)		(771)		(733)
Carrying Value	1,218		1,218		849
Amortization expense	13	11	38	32
Natural Gas Pipelines & Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	1,350		1,350		1,350
Accumulated Amortization	(579)		(579)		(550)
Carrying Value	771		771		800
Natural Gas Pipelines & Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	639		639		232
Accumulated Amortization	(192)		(192)		(183)
Carrying Value	447		447		49
Petrochemical & Refined Products Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	226		226		226
Accumulated Amortization	(106)		(106)		(101)
Carrying Value	120		120		125
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	(79)		(79)		(75)
Carrying Value	102		102		106
Petrochemical & Refined Products Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	45		45		45
Accumulated Amortization	(27)		(27)		(26)
Carrying Value	$ 18		$ 18		$ 19