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Variable Interest Entities and Noncontrolling Interests - EEGH (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Aug. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Limited Partner \| Primary Beneficiary \| Cove Point LNG, LP
Schedule of Equity Method Investments [Line Items]
Variable interest entity, ownership percentage		75.00%
General Partner \| Primary Beneficiary \| Cove Point LNG, LP
Schedule of Equity Method Investments [Line Items]
Variable interest entity, ownership percentage		100.00%
EEGH \| Limited Partner \| Primary Beneficiary \| Cove Point LNG, LP
Schedule of Equity Method Investments [Line Items]
Variable interest entity, ownership percentage		75.00%
EEGH \| General Partner \| Primary Beneficiary \| Cove Point LNG, LP
Schedule of Equity Method Investments [Line Items]
Variable interest entity, ownership percentage		100.00%
EEGH \| Carolina Gas Services, Inc. \| Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Related party amounts of transaction			$ 3	$ 12
Dominion Energy, Inc. \| Cove Point LNG, LP
Schedule of Equity Method Investments [Line Items]
Ownership interest	50.00%
Brookfield Super-Core Infrastructure Partners \| Cove Point LNG, LP
Schedule of Equity Method Investments [Line Items]
Ownership interest		25.00%