Other Income (Deductions) (Schedule Of Other Income (Deductions)) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Component of Other Income (Deductions) [Line Items]
NDT Fund Interest and Dividends		$ 14	$ 13
Allowance for Funds Used During Construction		15	23
Solar Loan Interest		3	3
Purchase of Tax Losses		(27)	(16)
Other		0	2
Other Income (Deductions)		5	25
Public Service Electric and Gas Company [Member]
Component of Other Income (Deductions) [Line Items]
NDT Fund Interest and Dividends		0	0
Allowance for Funds Used During Construction		15	23
Solar Loan Interest		3	3
Purchase of Tax Losses		0	0
Other		1	2
Other Income (Deductions)		19	28
Other Entities [Member]
Component of Other Income (Deductions) [Line Items]
NDT Fund Interest and Dividends	[1]	14	13
Allowance for Funds Used During Construction	[1]	0	0
Solar Loan Interest	[1]	0	0
Purchase of Tax Losses	[1]	(27)	(16)
Other	[1]	(1)	0
Other Income (Deductions)	[1]	$ (14)	$ (3)

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