Consolidated Statements Of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total		Cumulative Effect, Period of Adoption, Adjustment	Common Stock [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member] Cumulative Effect, Period of Adoption, Adjustment	Public Service Electric and Gas Company	Public Service Electric and Gas Company Cumulative Effect, Period of Adoption, Adjustment	Public Service Electric and Gas Company Common Stock [Member]	Public Service Electric and Gas Company Contributed Capital [Member]	Public Service Electric and Gas Company Basis Adjustment [Member]	Public Service Electric and Gas Company Retained Earnings [Member]	Public Service Electric and Gas Company Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	Public Service Electric and Gas Company Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance (in value) at Dec. 31, 2018	$ 14,377			$ 4,980	$ (808)	$ 10,582	$ 81	$ (377)	$ (81)	$ 10,900		$ 892	$ 1,095	$ 986	$ 7,928		$ (1)
Beginning Balance, shares at Dec. 31, 2018				534	(30)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,693					1,693				1,250					1,250
Other Comprehensive Income (Loss), net of tax
Other Comprehensive Income (Loss), net of tax	(31)							(31)		3							3
Comprehensive Income	1,662									1,253
Cash Dividends on Common Stock	(950)					(950)		0		(250)					(250)
Contributed Capital										0
Other	0			$ 23	$ (23)	0		0
Treasury Stock, Shares, Acquired					0
Ending Balance (in value) at Dec. 31, 2019	$ 15,089		$ (2)	$ 5,003	$ (831)	11,406	$ (2)	(489)	$ 0	11,903	$ (2)	892	1,095	986	8,928	$ (2)	2
Ending Balance, shares at Dec. 31, 2019				534	(30)
Other Comprehensive Income (Loss), net of tax
Common Stock, Dividends, Per Share, Cash Paid	$ 1.88
Other Comprehensive Income (Loss), tax	$ (2)									(1)
Net Income	1,905	[1]				1,905				1,327					1,327
Other Comprehensive Income (Loss), net of tax	(15)							(15)		1							1
Comprehensive Income	1,890									1,328
Cash Dividends on Common Stock	(991)					(991)		0		(175)					(175)
Contributed Capital										75			75
Other	(2)			$ 28	$ (30)	0		0
Treasury Stock, Shares, Acquired				0	0
Ending Balance (in value) at Dec. 31, 2020	$ 15,984			$ 5,031	$ (861)	12,318		(504)		13,129		892	1,170	986	10,078		3
Ending Balance, shares at Dec. 31, 2020				534	(30)
Other Comprehensive Income (Loss), net of tax
Common Stock, Dividends, Per Share, Cash Paid	$ 1.96
Other Comprehensive Income (Loss), tax	$ 0									0
Net Income	(648)	[1]				(648)				1,446					1,446
Other Comprehensive Income (Loss), net of tax	154							154		(2)							(2)
Comprehensive Income	(494)									1,444
Cash Dividends on Common Stock	(1,031)					(1,031)		0
Contributed Capital										0
Other	(21)			$ 14	$ (35)	0		0
Treasury Stock, Shares, Acquired				0	0
Ending Balance (in value) at Dec. 31, 2021	$ 14,438			$ 5,045	$ (896)	$ 10,639		$ (350)		14,573		$ 892	$ 1,170	$ 986	$ 11,524		$ 1
Ending Balance, shares at Dec. 31, 2021				534	(30)
Other Comprehensive Income (Loss), net of tax
Common Stock, Dividends, Per Share, Cash Paid	$ 2.04
Other Comprehensive Income (Loss), tax	$ (51)									$ 1

[1] Includes after-tax impairment losses and other charges, including debt extinguishment costs, related to the sale of the fossil generating assets at PSEG Power of $2,158 million in the year ended December 31, 2021. Includes an after-tax gain of $86 million in the year ended December 31, 2020 related to the sale of PSEG Power’s interest in the Yards Creek generation facility and an after-tax loss of $286 million in the year ended December 31, 2019 related to the sale of PSEG Power’s ownership interests in the Keystone and Conemaugh fossil generation plants. See Note 4. Early Plant Retirements/Asset Dispositions and Impairments for additional information.(D)Includes net after-tax losses of $446 million and $58 million in the years ended December 31, 2021 and 2020 and a net after-tax gain of $205 million in the year ended December 31, 2019 at PSEG Power related to the impacts of non-trading commodity mark-to-market activity, which consists of the financial impact from positions with future delivery dates.