Segment Disclosures Recon from Modified EBITDA to Net Income (Loss) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA		$ 6,075	$ 5,494	$ 4,851
Accretion expense associated with asset retirement obligations for nonregulated operations		(51)	(45)	(35)
Depreciation and amortization expenses		(2,009)	(1,842)	(1,721)
Impairment of goodwill (Note 15)		0	0	(187)
Equity earnings (losses) (Note 8)		637	608	328
Impairment of equity-method investments (Note 17)		0	0	(1,046)
Other investing income (loss) – net		16	7	8
Proportional Modified EBITDA Equity Method Investments		(979)	(970)	(749)
Interest Expense		(1,147)	(1,179)	(1,172)
(Provision) benefit for income taxes		(425)	(511)	(79)
Net income (loss)		2,117	1,562	198
Inventory write-downs		161	15	17
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		47	0	0
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		47	0	0
Intersegment Eliminations [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Proportional Modified EBITDA Equity Method Investments		0	0	0
Operating Segments [Member] | Transmission And Gulf Of Mexico [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA		2,674	2,621	2,379
Proportional Modified EBITDA Equity Method Investments		(193)	(183)	(166)
Operating Segments [Member] | Northeast G And P [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA		1,796	1,712	1,489
Proportional Modified EBITDA Equity Method Investments		(654)	(682)	(473)
Operating Segments [Member] | West [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA		1,211	961	947
Proportional Modified EBITDA Equity Method Investments		(132)	(105)	(110)
Operating Segments [Member] | Gas & NGL Marketing Services
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA	[1]	(40)	22	51
Proportional Modified EBITDA Equity Method Investments		0	0	0
Operating Segments [Member] | Other [Member]
Reconciliation of Modified EBITDA to Net Income (Loss)
Modified EBITDA		434	178	(15)
Proportional Modified EBITDA Equity Method Investments		$ 0	$ 0	$ 0

[1] Modified EBITDA for 2022, 2021, and 2020, includes charges of $161 million, $15 million, and $17 million respectively, associated with lower of cost or net realizable value adjustments to our inventory. These charges are reflected in Product Sales or Product costs in our Consolidated Statement of Income (see Note 1 – General, Description of Business, Basis of Presentation, and Summary of Significant Accounting Policies). Net unrealized commodity-related derivatives gains of $47 million in 2022 and $0 in 2021 and 2020 are reflected in Net processing commodity expenses.