Income Taxes (Schedule Of Effective Tax Rates) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Taxes [Line Items]
Pre-Tax Income	$ 437	$ 744	$ 1,066	$ 2,329
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	92	156	224	489
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	34	50	74	158
Effective Income Tax Rate Reconciliation, NDT Fund, Amount	3	7	15	13
Effective Income Tax Rate Reconciliation, UTP, amount	1	(1)	2	(7)
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	(104)	(3)	(106)	(5)
Effective Income Tax Rate Reconciliation, Leasing Activities, Amount	0	0	0	(17)
Effective Income Tax Rate Reconciliation, GPRC	(13)	(8)	(28)	(24)
Effective Tax Rate Reconciliation, Effective Tax Rate Adjustment	5	7	(12)	(16)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount	(24)	(51)	(67)	(126)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	9	(4)	(2)	(14)
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	(89)	(3)	(124)	(38)
Income Tax Provision	$ 3	$ 153	$ 100	$ 451
Effective tax rate	0.70%	20.60%	9.40%	19.40%
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	$ 361	$ 370	$ 941	$ 911
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	76	78	198	191
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	25	30	66	68
Effective Income Tax Rate Reconciliation, UTP, amount	0	(6)	0	(6)
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	(2)	(3)	(4)	(5)
Effective Income Tax Rate Reconciliation, GPRC	(13)	(8)	(28)	(24)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount	(24)	(51)	(67)	(126)
Effective Income Tax Rate Reconciliation, Bad Debt Flow Through, Amount	(4)	(5)	(6)	(7)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	1	(1)	(8)	(3)
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	(17)	(44)	(47)	(103)
Income Tax Provision	$ 59	$ 34	$ 151	$ 88
Effective tax rate	16.30%	9.20%	16.00%	9.70%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%