Segment Disclosures Recon from Modified EBITDA to Net Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	$ 1,528	$ 1,667	$ 3,365	$ 3,797
Accretion expense associated with asset retirement obligations for nonregulated operations	(21)	(14)	(39)	(29)
Depreciation and amortization expenses	(540)	(515)	(1,088)	(1,021)
Equity earnings (losses)	147	160	284	307
Other investing income (loss) – net	18	13	42	21
Proportional Modified EBITDA Equity Method Investments	(238)	(249)	(466)	(478)
Interest Expense	(339)	(306)	(688)	(600)
(Provision) benefit for income taxes	(129)	(175)	(322)	(459)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	0	(87)	0	(87)
Net income (loss)	426	494	1,088	1,451
Operating Segments [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	1,481	1,626	3,242	3,682
Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	808	731	1,637	1,446
Operating Segments [Member] | Northeast G And P [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	481	515	985	985
Operating Segments [Member] | West [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	318	312	645	616
Operating Segments [Member] | Gas & NGL Marketing Services
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	(126)	68	(25)	635
Corporate, Non-Segment
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	$ 47	$ 41	$ 123	$ 115