Condensed Consolidated Statements of Stockholders Equity Condensed 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	AOCI Attributable to Parent [Member]	Public Service Electric and Gas Company [Member]	Public Service Electric and Gas Company [Member] Cumulative Effect, Period of Adoption, Adjustment	Public Service Electric and Gas Company [Member] Common Stock [Member]	Public Service Electric and Gas Company [Member] Retained Earnings [Member]	Public Service Electric and Gas Company [Member] Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	Public Service Electric and Gas Company [Member] AOCI Attributable to Parent [Member]	Public Service Electric and Gas Company [Member] Contributed Capital [Member]	Public Service Electric and Gas Company [Member] Basis Adjustment [Member]	PSEG Power [Member]	PSEG Power [Member] Retained Earnings [Member]	PSEG Power [Member] AOCI Attributable to Parent [Member]	PSEG Power [Member] Contributed Capital [Member]	PSEG Power [Member] Basis Adjustment [Member]
Shares, Outstanding				534	(30)
Total Stockholder's Equity	$ 15,089		$ (2)	$ 5,003	$ (831)	$ 11,406	$ (2)	$ (489)	$ 11,903	$ (2)	$ 892	$ 8,928	$ (2)	$ 2	$ 1,095	$ 986	$ 5,890	$ 5,063	$ (401)	$ 2,214	$ (986)
Net Income	1,474	[1]				1,474			1,036			1,036					437	437
Other Comprehensive Income (Loss), Net of Tax	37							37	1					1			27		27
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	1,511								1,037								464
Dividends, Common Stock, Cash	(743)					(743)		0	(175)			(175)
Stockholders' Equity, Other	(19)			$ 13	$ (32)	0		0
Stockholders' Equity, Other Shares				0	0
Other Comprehensive Income (Loss), Tax	(19)								(1)								(16)
Shares, Outstanding				534	(30)
Total Stockholder's Equity	15,491			$ 5,003	$ (865)	11,808		(455)	12,450		892	9,474		3	1,095	986	6,100	5,246	(374)	2,214	(986)
Net Income	575	[1]				575			313			313					254	254
Other Comprehensive Income (Loss), Net of Tax	3							3	0					0			0		0
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	578								313								254
Dividends, Common Stock, Cash	(248)					(248)		0
Stockholders' Equity, Other	15			$ 13	$ 2	0		0
Stockholders' Equity, Other Shares				0	0
Other Comprehensive Income (Loss), Tax	1								0								1
Shares, Outstanding				534	(30)
Total Stockholder's Equity	15,836			$ 5,016	$ (863)	12,135		(452)	12,763		892	9,787		3	1,095	986	6,179	5,325	(374)	2,214	(986)
Shares, Outstanding				534	(30)
Total Stockholder's Equity	15,984			$ 5,031	$ (861)	12,318		(504)	13,129		892	10,078		3	1,170	986	6,212	5,307	(419)	2,310	(986)
Net Income	(1,093)	[2]				(1,093)			1,175			1,175					(2,255)	(2,255)
Other Comprehensive Income (Loss), Net of Tax	(20)							(20)	(2)					(2)			(18)		(18)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(1,113)								1,173								(2,273)
Dividends, Common Stock, Cash	(773)					(773)		0									(175)	(175)
Stockholders' Equity, Other	(29)			$ 8	$ (37)	0		0
Stockholders' Equity, Other Shares				0	0
Other Comprehensive Income (Loss), Tax	16								1								15
Shares, Outstanding				534	(30)
Total Stockholder's Equity	15,878			$ 5,026	$ (899)	12,273		(522)	13,913		892	10,864		1	1,170	986	5,700	4,810	(434)	2,310	(986)
Net Income	(1,564)	[2]				(1,564)			389			389					(1,933)	(1,933)
Other Comprehensive Income (Loss), Net of Tax	(2)							(2)	0					0			(3)		(3)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(1,566)								389								(1,936)
Dividends, Common Stock, Cash	(257)					(257)		0
Stockholders' Equity, Other	14			$ 13	$ 1	0		0
Stockholders' Equity, Other Shares				0	0
Other Comprehensive Income (Loss), Tax	4								0								3
Shares, Outstanding				534	(30)
Total Stockholder's Equity	$ 14,069			$ 5,039	$ (898)	$ 10,452		$ (524)	$ 14,302		$ 892	$ 11,253		$ 1	$ 1,170	$ 986	$ 3,764	$ 2,877	$ (437)	$ 2,310	$ (986)

[1] Includes an after-tax gain of $86 million in the three and nine months ended September 30, 2020 related to the sale of PSEG Power’s interest in the Yards Creek generation facility. See Note 4. Early Plant Retirements/Asset Dispositions and Impairments

[2] Includes after-tax impairment losses and other charges related to the pending sale of the Fossil generating assets at PSEG Power of $1,563 million and $1,936 million for the three and nine months ended September 30, 2021, respectively. See Note 4. Early Plant Retirements/Asset Dispositions and Impairments for additional information. Also includes net after-tax losses of $478 million and $718 million for the three and nine months ended September 30, 2021 related to the impacts of non-trading commodity mark-to-market activity, which consist of the financial impact from positions with future delivery dates.