Income Taxes (Reconciliation Of Reported Income Tax Expense) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Taxes [Line Items]
Net Income (Loss)	[1],[2]	$ 2,563	$ 1,031	$ (648)
Federal		144	262	407
State		19	(30)	(3)
Total Current		163	232	404
Federal		109	(335)	(700)
State		253	80	(136)
Total Deferred		362	(255)	(836)
Investment tax credit		(7)	(6)	(9)
Total Income Tax		518	(29)	(441)
Pre-Tax Income		3,081	1,002	(1,089)
Tax Computed at Statutory Rate		647	210	(229)
State Income Taxes (net of federal income tax)		215	41	(109)
Uncertain Tax Positions		(14)	(22)	19
Nuclear Decommissioning Trust		26	(22)	23
Plant-Related Items		(7)	(6)	(7)
Effective Income Tax Rate Reconciliation, Tax Credit adjustment				29
Tax Credits		(10)	(10)
Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Amount		(7)	0	(8)
Effective Income Tax Rate Reconciliation, Leasing Activities, Amount		(22)	0	(1)
Effective Income Tax Rate Reconciliation, GPRC		(52)	(37)	(13)
Tax Adjustment Credit		(232)	(193)	(171)
Effective Income Tax Rate Reconciliation, Bad Debt Flow Through, Amount		(9)	(1)	27
Other		(17)	11	(1)
Sub-Total		(129)	(239)	(212)
Income Tax Provision		$ 518	$ (29)	$ (441)
Effective income tax rate		16.80%	(2.90%)	40.50%
Public Service Electric and Gas Company
Income Taxes [Line Items]
Net Income (Loss)		$ 1,515	$ 1,565	$ 1,446
Federal		127	130	208
State		4	0	1
Total Current		131	130	209
Federal		(113)	(17)	(33)
State		149	159	153
Total Deferred		36	142	120
Investment tax credit		(7)	(5)	(5)
Total Income Tax		160	267	324
Pre-Tax Income		1,675	1,832	1,770
Tax Computed at Statutory Rate		352	385	372
State Income Taxes (net of federal income tax)		121	126	122
Uncertain Tax Positions		(9)	2	2
Plant-Related Items		(7)	(6)	(7)
Tax Credits		(9)	(9)	(8)
Effective Income Tax Rate Reconciliation, GPRC		(52)	(37)	(13)
Tax Adjustment Credit		(232)	(193)	(171)
Effective Income Tax Rate Reconciliation, Bad Debt Flow Through, Amount		(9)	(1)	27
Other		5	0	0
Sub-Total		(192)	(118)	(48)
Income Tax Provision		$ 160	$ 267	$ 324
Effective income tax rate		9.60%	14.60%	18.30%

[1] Includes a $239 million after-tax pension charge due to the remeasurement of the qualified pension plans as a result of the pension settlement transaction in the third quarter of 2023. Includes after-tax impairments of $92 million related to certain Energy Holdings investments and additional adjustments related to the sale of PSEG Power’s fossil generation assets in the year ended December 31, 2022. Includes after-tax impairment losses and other charges, including debt extinguishment costs, related to the sale of the fossil generating assets at PSEG Power of $2,158 million in the year ended December 31, 2021. See Note 3. Asset Dispositions and Impairments for additional information.

[2] Includes net after-tax gain (loss) of $959 million, $(457) million and $(446) million in the years ended December 31, 2023, 2022 and 2021, respectively at PSEG Power related to the impacts of non-trading commodity mark-to-market activity, which consists of the financial impact from positions with future delivery dates.