Income Taxes (Schedule Of Effective Tax Rates) (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Taxes [Line Items]
Pre-Tax Income	$ 55	$ (2,246)	$ (1)	$ (1,720)
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	12	(472)	0	(361)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	7	(160)	(16)	(142)
Income Tax Reconciliation Deductions Nuclear Decommissioning Trust	(10)	(1)	(34)	17
Effective Income Tax Rate Reconciliation, GPRC	(11)	(3)	(25)	(6)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount	(44)	(57)	(150)	(175)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	(11)	13	(13)	11
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	(71)	(210)	(244)	(266)
Income Tax Provision	(59)	$ (682)	$ (244)	$ (627)
Effective tax rate		30.40%		36.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Effective Income Tax Reconciliation, Tax Credit Amortization/Recapture	(2)	$ (2)	$ (6)	$ 29
Public Service Electric and Gas Company [Member]
Income Taxes [Line Items]
Pre-Tax Income	468	463	1,427	1,389
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	98	97	300	292
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	32	33	99	96
Effective Income Tax Rate Reconciliation, GPRC	(11)	(3)	(25)	(6)
Effective Income Tax Rate Reconciliation, Tax Adjustment Credit, Amount	(44)	(57)	(150)	(175)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	(6)	4	(10)	7
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	(29)	(23)	(86)	(78)
Income Tax Provision	$ 69	$ 74	$ 214	$ 214
Effective tax rate	14.70%	16.00%	15.00%	15.40%