Segment Disclosures Recon from Modified EBITDA to Net Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	$ 1,679	$ 1,774	$ 5,044	$ 5,571
Accretion expense associated with asset retirement obligations for nonregulated operations	(17)	(14)	(56)	(43)
Depreciation and amortization expenses	(566)	(521)	(1,654)	(1,542)
Equity earnings (losses)	147	127	431	434
Other investing income (loss) – net	290	24	332	45
Proportional Modified EBITDA Equity Method Investments	(227)	(215)	(693)	(693)
Interest Expense, Nonoperating	(338)	(314)	(1,026)	(914)
(Provision) benefit for income taxes	(227)	(176)	(549)	(635)
Income (loss) from discontinued operations	0	(1)	0	(88)
Net income (loss)	741	684	1,829	2,135
Operating Segments [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	1,621	1,693	4,863	5,375
Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	811	881	2,448	2,327
Operating Segments [Member] | Northeast G And P [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	476	454	1,461	1,439
Operating Segments [Member] | West [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	323	315	968	931
Operating Segments [Member] | Gas & NGL Marketing Services
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	11	43	(14)	678
Corporate, Non-Segment
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	$ 58	$ 81	$ 181	$ 196