Asset Retirement Obligations (AROs) - Impact Of The Revisions On Asset Retirement Obligation (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024
Asset Retirement Obligation [Line Items]
ARO Liability, Beginning Balance		$ 1,500	$ 1,468
Liabilities Settled		(12)	(26)
Accretion Expense		43	49
Accretion Expense Deferred and Recovered in Rate Base	[1]	20	16
Revision to Present Values of Estimated Cash Flows		(170)	(7)
ARO Liability, Ending Balance		1,381	1,500
Public Service Electric and Gas Company
Asset Retirement Obligation [Line Items]
ARO Liability, Beginning Balance		457	401
Liabilities Settled		(10)	(12)
Accretion Expense		0	0
Accretion Expense Deferred and Recovered in Rate Base	[1]	20	16
Revision to Present Values of Estimated Cash Flows		(10)	52
ARO Liability, Ending Balance		457	457
PSEG Power & Other
Asset Retirement Obligation [Line Items]
ARO Liability, Beginning Balance		1,043	1,067
Liabilities Settled		(2)	(14)
Accretion Expense		43	49
Accretion Expense Deferred and Recovered in Rate Base	[1]	0	0
Revision to Present Values of Estimated Cash Flows		(160)	(59)
ARO Liability, Ending Balance		$ 924	$ 1,043

[1] Not reflected as expense in Consolidated Statements of Operations.