Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2021		Sep. 30, 2020		Sep. 30, 2021		Sep. 30, 2020
Operating Revenues	$ 1,903		$ 2,370		$ 6,666		$ 7,201
Operating Expenses [Abstract]
Energy Costs	860		775		2,495		2,276
Operation and Maintenance	807		767		2,368		2,254
Depreciation and Amortization	283		317		946		956
(Gains) Losses on Asset Dispositions and Impairments	2,158		(122)		2,615		(122)
Total Operating Expenses	4,108		1,737		8,424		5,364
OPERATING INCOME (LOSS)	(2,205)		633		(1,758)		1,837
Income from Equity Method Investments	3		4		12		10
Net Gains (Losses) on Trust Investments	(17)		107		124		87
Other Income (Deductions)	35		39		93		81
Non-Operating Pension and OPEB Credits (Costs)	82		62		246		186
Interest Expense	(144)		(149)		(437)		(453)
Income Before Income Taxes	(2,246)		696		(1,720)		1,748
Income Tax Benefit (Expense)	682		(121)		627		(274)
Net Income (Loss)	$ (1,564)	[1]	$ 575	[2]	$ (1,093)	[1]	$ 1,474	[2]
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (shares)	504		504		504		504
DILUTED (shares)	504		507		504		507
EARNINGS PER SHARE:
BASIC (dollars per share)	$ (3.10)		$ 1.15		$ (2.17)		$ 2.93
DILUTED (dollars per share)	$ (3.10)		$ 1.14		$ (2.17)		$ 2.91
Public Service Electric and Gas Company [Member]
Operating Revenues	$ 1,820		$ 1,660		$ 5,407		$ 4,999
Operating Expenses [Abstract]
Energy Costs	698		663		2,056		1,881
Operation and Maintenance	422		409		1,239		1,175
Depreciation and Amortization	226		218		698		657
(Gains) Losses on Asset Dispositions and Impairments	(4)		0		(4)		0
Total Operating Expenses	1,342		1,290		3,989		3,713
OPERATING INCOME (LOSS)	478		370		1,418		1,286
Net Gains (Losses) on Trust Investments	0		1		1		2
Other Income (Deductions)	20		28		72		81
Non-Operating Pension and OPEB Credits (Costs)	67		51		199		154
Interest Expense	(102)		(97)		(301)		(291)
Income Before Income Taxes	463		353		1,389		1,232
Income Tax Benefit (Expense)	(74)		(40)		(214)		(196)
Net Income (Loss)	389		313		1,175		1,036
PSEG Power [Member]
Operating Revenues	51		746		1,598		2,649
Operating Expenses [Abstract]
Energy Costs	290		290		1,243		1,289
Operation and Maintenance	230		213		711		679
Depreciation and Amortization	50		91		225		276
(Gains) Losses on Asset Dispositions and Impairments	2,162		(122)		2,619		(122)
Total Operating Expenses	2,732		472		4,798		2,122
OPERATING INCOME (LOSS)	(2,681)		274		(3,200)		527
Income from Equity Method Investments	3		4		12		10
Net Gains (Losses) on Trust Investments	(17)		103		120		79
Other Income (Deductions)	16		11		20		0
Non-Operating Pension and OPEB Credits (Costs)	12		8		35		25
Interest Expense	(19)		(28)		(70)		(92)
Income Before Income Taxes	(2,686)		372		(3,083)		549
Income Tax Benefit (Expense)	753		(118)		828		(112)
Net Income (Loss)	$ (1,933)		$ 254		$ (2,255)		$ 437

[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