Pension And OPEB (Schedule Of Pension And OPEB Costs) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Benefits (Credits) Costs	$ 17	$ 20	$ 34	$ 40
Pension Benefits [Member] | Public Service Electric and Gas Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Benefits (Credits) Costs	10	14	21	27
Pension Benefits [Member] | PSEG Power & Other
Defined Benefit Plan Disclosure [Line Items]
Total Benefits (Credits) Costs	7	6	13	13
OPEB [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Benefits (Credits) Costs	2	(10)	3	(21)
OPEB [Member] | Public Service Electric and Gas Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Benefits (Credits) Costs	(1)	(10)	(1)	(20)
OPEB [Member] | PSEG Power & Other
Defined Benefit Plan Disclosure [Line Items]
Total Benefits (Credits) Costs	$ 3	$ 0	$ 4	$ (1)