Asset Retirement Obligations (AROs) - Impact Of The Revisions On Asset Retirement Obligation (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023
Asset Retirement Obligation [Line Items]
ARO Liability, Beginning Balance		$ 1,468	$ 1,499
Liabilities Settled		(26)	(13)
Accretion Expense		49	51
Accretion Expense Deferred and Recovered in Rate Base	[1]	16	16
Revision to Present Values of Estimated Cash Flows		(7)	(85)
ARO Liability, Ending Balance		1,500	1,468
Public Service Electric and Gas Company
Asset Retirement Obligation [Line Items]
ARO Liability, Beginning Balance		401	384
Liabilities Settled		(12)	(13)
Accretion Expense		0	0
Accretion Expense Deferred and Recovered in Rate Base	[1]	16	16
Revision to Present Values of Estimated Cash Flows		52	14
ARO Liability, Ending Balance		457	401
PSEG Power & Other
Asset Retirement Obligation [Line Items]
ARO Liability, Beginning Balance		1,067	1,115
Liabilities Settled		(14)	0
Accretion Expense		49	51
Accretion Expense Deferred and Recovered in Rate Base	[1]	0	0
Revision to Present Values of Estimated Cash Flows		(59)	(99)
ARO Liability, Ending Balance		$ 1,043	$ 1,067

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