Income Taxes (Schedule Of Effective Tax Rates) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Taxes [Line Items]
Pre-Tax Income	$ 629	$ 1,585
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	132	333
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	40	108
Uncertain Tax Positions	1	(6)
Effective Income Tax Rate Reconciliation, Leasing Activities, Amount	0	(17)
Effective Income Tax Rate Reconciliation, GPRC	(15)	(16)
Effective Tax Rate Reconciliation, Effective Tax Rate Adjustment	(17)	(23)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount	(43)	(75)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	(1)	(6)
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	(35)	(35)
Income Tax Provision	$ 97	$ 298
Effective tax rate	15.40%	18.80%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Public Service Electric and Gas Company [Member]
Income Taxes [Line Items]
Pre-Tax Income	$ 580	$ 541
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	122	114
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	41	38
Effective Income Tax Rate Reconciliation, GPRC	(15)	(16)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount	(43)	(75)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	(13)	(7)
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	(30)	(60)
Income Tax Provision	$ 92	$ 54
Effective tax rate	15.90%	10.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%