Investments (Narrative) (Detail 1) - USD ($) $ in Millions	1 Months Ended	3 Months Ended									12 Months Ended
	May 31, 2022	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Aug. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Earnings (losses) from equity method investees											$ (26)		$ 21		$ 15
Net earnings (losses) from discontinued operations including noncontrolling interest		$ (71)	$ (541)	$ 168	$ 281	$ 122	$ 150		$ 212	$ 410	(163)	[1],[2]	894	[1],[2]	1,358	[1],[2]
Distributions received from investment											245		355		332
Finite Lived Equity Method Investment Basis Difference
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment that exceeded share of underlying equity		18				223					18		223
Equity method investment goodwill		9				9					9		9
Capitalized interest											(3)		(1)
Discontinued Operations
Schedule of Equity Method Investments [Line Items]
Net earnings (losses) from discontinued operations including noncontrolling interest											235		271		244
Atlantic Coast Pipeline
Schedule of Equity Method Investments [Line Items]
Earnings (losses) from equity method investees											15		(7)		(20)
Cove Point
Schedule of Equity Method Investments [Line Items]
Distributions received from investment											227		344		300
Cove Point | Finite Lived Equity Method Investment Basis Difference
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment that exceeded share of underlying equity						215							215
Cove Point | Discontinued Operations
Schedule of Equity Method Investments [Line Items]
Earnings (losses) from equity method investees											218		277		$ 259
Trading Securities
Schedule of Equity Method Investments [Line Items]
Rabbi trust securities		$ 119				$ 111					$ 119		$ 111
2019 Series A Corporate Units
Schedule of Equity Method Investments [Line Items]
Short-term deposit	$ 2,000
2019 Series A Corporate Units | Series A Preferred Stock
Schedule of Equity Method Investments [Line Items]
Redemption obligation	$ 1,600
Preferred stock dividend rate percentage	1.75%							1.75%
2019 Series A Corporate Units | Minimum
Schedule of Equity Method Investments [Line Items]
Short-term deposit	$ 1,600
2019 Series A Corporate Units | Maximum
Schedule of Equity Method Investments [Line Items]
Short-term deposit	$ 2,000

[1] Includes income tax expense of $1.3 billion, $197 million and $374 million for the years ended December 31, 2023, 2022 and 2021, respectively.

[2] See Note 9 for amounts attributable to related parties.