Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019
Operating Revenues	$ 2,370		$ 2,302	$ 7,201		$ 7,598
Operating Expenses [Abstract]
Energy Costs	775		753	2,276		2,581
Operation and Maintenance	767		745	2,254		2,251
Depreciation and Amortization	317		307	956		928
(Gain) Loss on Disposition of Assets	(122)		7	(122)		402
Total Operating Expenses	1,737		1,812	5,364		6,162
OPERATING INCOME	633		490	1,837		1,436
Income from Equity Method Investments	4		3	10		10
Net Gains (Losses) on Trust Investments	107		(3)	87		164
Other Income (Deductions)	39		35	81		101
Non-Operating Pension and OPEB Credits (Costs)	62		55	186		121
Interest Expense	(149)		(147)	(453)		(417)
Income Before Income Taxes	696		433	1,748		1,415
Income Tax Benefit (Expense)	(121)		(30)	(274)		(159)
Net Income (Loss)	$ 575	[1]	$ 403	$ 1,474	[1]	$ 1,256	[1]
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (shares)	504		504	504		504
DILUTED (shares)	507		507	507		507
EARNINGS PER SHARE:
BASIC (dollars per share)	$ 1.15		$ 0.80	$ 2.93		$ 2.49
DILUTED (dollars per share)	$ 1.14		$ 0.79	$ 2.91		$ 2.47
Public Service Electric and Gas Company [Member]
Operating Revenues	$ 1,660		$ 1,604	$ 4,999		$ 5,018
Operating Expenses [Abstract]
Energy Costs	663		618	1,881		2,094
Operation and Maintenance	409		388	1,175		1,165
Depreciation and Amortization	218		206	657		620
Total Operating Expenses	1,290		1,212	3,713		3,879
OPERATING INCOME	370		392	1,286		1,139
Net Gains (Losses) on Trust Investments	1		0	2		1
Other Income (Deductions)	28		22	81		60
Non-Operating Pension and OPEB Credits (Costs)	51		46	154		105
Interest Expense	(97)		(92)	(291)		(268)
Income Before Income Taxes	353		368	1,232		1,037
Income Tax Benefit (Expense)	(40)		(24)	(196)		(63)
Net Income (Loss)	313		344	1,036		974
PSEG Power [Member]
Operating Revenues	746		771	2,649		3,270
Operating Expenses [Abstract]
Energy Costs	290		359	1,289		1,556
Operation and Maintenance	213		233	679		736
Depreciation and Amortization	91		93	276		282
(Gain) Loss on Disposition of Assets	(122)		7	(122)		402
Total Operating Expenses	472		692	2,122		2,976
OPERATING INCOME	274		79	527		294
Income from Equity Method Investments	4		3	10		10
Net Gains (Losses) on Trust Investments	103		(4)	79		160
Other Income (Deductions)	11		15	0		43
Non-Operating Pension and OPEB Credits (Costs)	8		8	25		14
Interest Expense	(28)		(34)	(92)		(85)
Income Before Income Taxes	372		67	549		436
Income Tax Benefit (Expense)	(118)		(14)	(112)		(127)
Net Income (Loss)	$ 254		$ 53	$ 437		$ 309

[1] Includes an after-tax gain of $86 million in the three months and nine months ended September 30, 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 nine months ended September 30, 2019 related to the sale of PSEG Power’s ownership interests in the Keystone and Conemaugh fossil generation plants. See Item 1. Note 4. Early Plant Retirements/Asset Dispositions for additional information.