Intangible Assets and Goodwill, Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Identifiable intangible assets [Abstract]
Gross Value	$ 5,891	$ 4,900
Accumulated Amortization	(1,926)	(1,749)
Carrying Value	3,965	3,151	$ 3,309
Amortization expense	177	151	143
Forecasted amortization expense [Abstract]
2023	200
2024	222
2025	230
2026	237
2027	235
Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Carrying Value	2,800
Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Carrying Value	1,100
NGL Pipelines & Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	1,198	614
Accumulated Amortization	(333)	(297)
Carrying Value	865	317
Amortization expense	36	24	25
NGL Pipelines & Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	449	449
Accumulated Amortization	(249)	(236)
Carrying Value	200	213
NGL Pipelines & Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	749	165
Accumulated Amortization	(84)	(61)
Carrying Value	665	104
Crude Oil Pipelines & Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	2,478	2,478
Accumulated Amortization	(702)	(618)
Carrying Value	1,776	1,860
Amortization expense	84	77	71
Crude Oil Pipelines & Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	2,195	2,195
Accumulated Amortization	(431)	(355)
Carrying Value	1,764	1,840
Crude Oil Pipelines & Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	283	283
Accumulated Amortization	(271)	(263)
Carrying Value	12	20
Natural Gas Pipelines & Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	1,989	1,582
Accumulated Amortization	(783)	(733)
Carrying Value	1,206	849
Amortization expense	50	42	39
Natural Gas Pipelines & Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	1,350	1,350
Accumulated Amortization	(588)	(550)
Carrying Value	762	800
Natural Gas Pipelines & Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	639	232
Accumulated Amortization	(195)	(183)
Carrying Value	444	49
Petrochemical & Refined Products Services [Member]
Identifiable intangible assets [Abstract]
Gross Value	226	226
Accumulated Amortization	(108)	(101)
Carrying Value	118	125
Amortization expense	7	8	$ 8
Petrochemical & Refined Products Services [Member] \| Customer relationship intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	181	181
Accumulated Amortization	(80)	(75)
Carrying Value	101	106
Petrochemical & Refined Products Services [Member] \| Contract-based intangibles [Member]
Identifiable intangible assets [Abstract]
Gross Value	45	45
Accumulated Amortization	(28)	(26)
Carrying Value	$ 17	$ 19

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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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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