Asset Retirement Obligations (AROs) (Impact Of The Revisions On Asset Retirement Obligation) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO Liability, Beginning Balance		$ 1,499	$ 1,573
Liabilities Settled		(13)	(15)
Accretion Expense		51	50
Accretion Expense Deferred and Recovered in Rate Base	[1]	16	17
Revision to Present Value of Future Cash Flows		(85)	(126)
ARO Liability, Ending Balance		1,468	1,499
Public Service Electric and Gas Company
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO Liability, Beginning Balance		384	363
Liabilities Settled		(13)	(15)
Accretion Expense		0	0
Accretion Expense Deferred and Recovered in Rate Base	[1]	16	17
Revision to Present Value of Future Cash Flows		14	19
ARO Liability, Ending Balance		401	384
PSEG Power & Other
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO Liability, Beginning Balance		1,115	1,210
Liabilities Settled		0	0
Accretion Expense		51	50
Accretion Expense Deferred and Recovered in Rate Base	[1]	0	0
Revision to Present Value of Future Cash Flows		(99)	(145)
ARO Liability, Ending Balance		1,067	1,115
PSEG Power LLC [Member]
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Revision to Present Value of Future Cash Flows		$ 99	$ 145

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