Other Income (Deductions) (Schedule Of Other Income (Deductions)) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023		Sep. 30, 2022
Component of Other Income (Deductions) [Line Items]
NDT Fund Interest and Dividends		$ 16	$ 17	$ 50		$ 47
Allowance for Funds Used During Construction		15	17	45		47
Solar Loan Interest		2	2	6		8
Interest Income, Other		9	5	32		9
Purchase of Tax Losses						(27)
Other		(1)	2	(1)		2
Other Income (Deductions)		41	43	132		86
Public Service Electric and Gas Company [Member]
Component of Other Income (Deductions) [Line Items]
NDT Fund Interest and Dividends		0	0	0		0
Allowance for Funds Used During Construction		15	17	45		47
Solar Loan Interest		2	2	6		8
Interest Income, Other		3	3	10		5
Purchase of Tax Losses						0
Other		1	3	4		6
Other Income (Deductions)		21	25	65		66
PSEG Power & Other
Component of Other Income (Deductions) [Line Items]
NDT Fund Interest and Dividends	[1]	16	17	50		47
Allowance for Funds Used During Construction	[1]	0	0	0		0
Solar Loan Interest	[1]	0	0	0		0
Interest Income, Other		6	2	22	[1]	4
Purchase of Tax Losses	[1]					(27)
Other	[1]	(2)	(1)	(5)		(4)
Other Income (Deductions)	[1]	$ 20	$ 18	$ 67		$ 20

[1] (A)PSEG Power & Other consists of activity at PSEG Power, Energy Holdings, PSEG LI, Services, PSEG (parent company) and intercompany eliminations.