Investments (Narrative) (Detail 1) - USD ($)	1 Months Ended	3 Months Ended									12 Months Ended
	May 31, 2022	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Aug. 31, 2022	Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Earnings (losses) from equity method investees											$ 3,000,000	[1]	$ (26,000,000)	[2]	$ 21,000,000	[3]
Net earnings (losses) from discontinued operations including noncontrolling interest		$ (3,000,000)	$ (15,000,000)	$ 97,000,000	$ 118,000,000	$ (33,000,000)	$ (541,000,000)	$ 168,000,000	$ 281,000,000		197,000,000	[4]	(125,000,000)	[4]	922,000,000	[4]
Distributions received from investment											140,000,000		245,000,000		355,000,000
Finite Lived Equity Method Investment Basis Difference
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment that exceeded share of underlying equity		5,000,000				18,000,000					5,000,000		18,000,000
Equity method investment goodwill						9,000,000							9,000,000
Capitalized interest													3,000,000
Discontinued Operations
Schedule of Equity Method Investments [Line Items]
Net earnings (losses) from discontinued operations including noncontrolling interest											(12,000,000)		235,000,000		271,000,000
Atlantic Coast Pipeline
Schedule of Equity Method Investments [Line Items]
Earnings (losses) from equity method investees											(13,000,000)		15,000,000		(7,000,000)
Cove Point
Schedule of Equity Method Investments [Line Items]
Distributions received from investment													227,000,000		344,000,000
Cove Point | Discontinued Operations
Schedule of Equity Method Investments [Line Items]
Earnings (losses) from equity method investees													218,000,000		$ 277,000,000
Trading Securities
Schedule of Equity Method Investments [Line Items]
Rabbi trust securities		$ 160,000,000				$ 119,000,000					$ 160,000,000		$ 119,000,000
2019 Series A Corporate Units
Schedule of Equity Method Investments [Line Items]
Short-term deposit	$ 2,000,000,000
2019 Series A Corporate Units | Series A Preferred Stock
Schedule of Equity Method Investments [Line Items]
Redemption obligation	$ 1,600,000,000
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	$ 1,600,000,000
2019 Series A Corporate Units | Maximum
Schedule of Equity Method Investments [Line Items]
Short-term deposit	$ 2,000,000,000

[1] Items designated are other segment items for each reportable segment.

[2] Items designated are other segment items for each reportable segment.

[3] Items designated are other segment items for each reportable segment.

[4] Includes income tax expense of $31 million, $1.3 billion and $207 million for the years ended December 31, 2024, 2023 and 2022, respectively.