Segment Disclosures Reconciliation of Segment Modified EBITDA to Consolidated Net Income (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Reconciliation of Modified EBITDA to Net Income (Loss):
Modified EBITDA Earnings (Loss)		$ 2,130	$ 1,393
Accretion expense associated with asset retirement obligations for nonregulated operations		(15)	(11)
Depreciation and amortization expenses		(506)	(498)
Equity earnings (losses)		147	136
Other investing income (loss) - net		8	1
Proportional Modified EBITDA of equity-method investments		(229)	(225)
Interest expense		(294)	(286)
(Provision) benefit for income taxes		(284)	(118)
Net income (loss)		957	392
Inventory write-downs		18	0
Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Cost of Sales
Reconciliation of Modified EBITDA to Net Income (Loss):
Unrealized Gain (Loss) on Derivatives		(5)	2
Gas & NGL Marketing Services | Energy Related Derivative | Not Designated as Hedging Instrument [Member] | Cost of Sales
Reconciliation of Modified EBITDA to Net Income (Loss):
Unrealized Gain (Loss) on Derivatives		(5)	2
Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]
Reconciliation of Modified EBITDA to Net Income (Loss):
Modified EBITDA Earnings (Loss)		715	697
Operating Segments [Member] | Northeast G And P [Member]
Reconciliation of Modified EBITDA to Net Income (Loss):
Modified EBITDA Earnings (Loss)		470	418
Operating Segments [Member] | West [Member]
Reconciliation of Modified EBITDA to Net Income (Loss):
Modified EBITDA Earnings (Loss)		304	260
Operating Segments [Member] | Gas & NGL Marketing Services
Reconciliation of Modified EBITDA to Net Income (Loss):
Modified EBITDA Earnings (Loss)	[1]	567	13
Operating Segments [Member] | Other [Member]
Reconciliation of Modified EBITDA to Net Income (Loss):
Modified EBITDA Earnings (Loss)		$ 74	$ 5

[1] Modified EBITDA for the three months ended March 31, 2023 and 2022, includes charges of $18 million and $0 million, respectively, associated with lower of cost or net realizable value adjustments to our inventory. These charges are reflected in Product sales and Product costs in our Consolidated Statement of Income. Net unrealized commodity-related derivatives gains (losses) of $(5) million and $2 million for the three months ended March 31, 2023 and 2022, respectively, are reflected in Net processing commodity expenses.