Income Taxes - Schedule of Effective Tax Rates (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Taxes [Line Items]
Pre-Tax Income	$ 559	$ 65	$ 1,625	$ 2,394
Tax Computed at Statutory Rate @ 21% Increase (Decrease) Attributable to:	117	14	341	503
State Income Taxes (net of federal income tax)	38	(1)	112	157
NDT Fund	11	(3)	26	11
Uncertain Tax Positions	1	1	3	(6)
Tax Credits	(90)	(2)	(195)	(7)
Leasing Activities	0	0	0	(17)
GPRC-CEF-EE	(16)	(13)	(44)	(36)
Estimated Annual Effective Tax Rate Interim Period Adjustment	14	9	1	(7)
TAC	(33)	(62)	(100)	(188)
Other	(3)	(17)	(5)	(33)
Subtotal	(78)	(88)	(202)	(126)
Total Income Tax Expense	$ 39	(74)	$ 139	$ 377
Effective Income Tax Rate	7.00%		8.60%	15.70%
Public Service Electric and Gas Company [Member]
Income Taxes [Line Items]
Pre-Tax Income	$ 469	454	$ 1,410	$ 1,365
Tax Computed at Statutory Rate @ 21% Increase (Decrease) Attributable to:	98	95	296	287
State Income Taxes (net of federal income tax)	32	33	99	100
Uncertain Tax Positions	0	0	0	(5)
Tax Credits	(2)	(2)	(6)	(7)
GPRC-CEF-EE	(16)	(13)	(44)	(36)
TAC	(33)	(62)	(100)	(188)
Bad Debt Flow-Through	(3)	(2)	(9)	(9)
Other	14	4	5	(1)
Subtotal	(8)	(42)	(55)	(146)
Total Income Tax Expense	$ 90	$ 53	$ 241	$ 141
Effective Income Tax Rate	19.20%	11.70%	17.10%	10.30%