Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2021		Sep. 30, 2020		Sep. 30, 2021		Sep. 30, 2020
Net Income (Loss)	$ (1,564)	[1]	$ 575	[2]	$ (1,093)	[1]	$ 1,474	[2]
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	(7)		(4)		(33)		24
Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit	1		4		2		4
Pension/Other Postretirement Benefit (OPEB) adjustment, net of tax (expense) benefit	4		3		11		9
Other Comprehensive Income (Loss), net of tax	(2)		3		(20)		37
COMPREHENSIVE INCOME (LOSS)	(1,566)		578		(1,113)		1,511
Public Service Electric and Gas Company [Member]
Net Income (Loss)	389		313		1,175		1,036
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	0		0		(2)		1
Other Comprehensive Income (Loss), net of tax	0		0		(2)		1
COMPREHENSIVE INCOME (LOSS)	389		313		1,173		1,037
PSEG Power [Member]
Net Income (Loss)	(1,933)		254		(2,255)		437
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	(6)		(2)		(26)		20
Pension/Other Postretirement Benefit (OPEB) adjustment, net of tax (expense) benefit	3		2		8		7
Other Comprehensive Income (Loss), net of tax	(3)		0		(18)		27
COMPREHENSIVE INCOME (LOSS)	$ (1,936)		$ 254		$ (2,273)		$ 464

[1] 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.

[2] 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