Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Revenues	$ 2,889	$ 2,781
Operating Expenses [Abstract]
Energy Costs	1,029	906
Operation and Maintenance	778	754
Depreciation and Amortization	341	324
Total Operating Expenses	2,148	1,984
OPERATING INCOME	741	797
Income from Equity Method Investments	3	3
Net Gains (Losses) on Trust Investments	60	(221)
Other Income (Deductions)	25	4
Non-Operating Pension and OPEB Credits (Costs)	82	62
Interest Expense	(146)	(153)
Income Before Income Taxes	765	492
Income Tax Benefit (Expense)	(117)	(44)
Net Income (Loss)	$ 648	$ 448
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (shares)	504	504
DILUTED (shares)	507	507
EARNINGS PER SHARE:
BASIC (dollars per share)	$ 1.29	$ 0.89
DILUTED (dollars per share)	$ 1.28	$ 0.88
Public Service Electric and Gas Company [Member]
Operating Revenues	$ 2,073	$ 1,883
Operating Expenses [Abstract]
Energy Costs	849	708
Operation and Maintenance	424	386
Depreciation and Amortization	241	222
Total Operating Expenses	1,514	1,316
OPERATING INCOME	559	567
Net Gains (Losses) on Trust Investments	1	0
Other Income (Deductions)	28	27
Non-Operating Pension and OPEB Credits (Costs)	66	51
Interest Expense	(98)	(96)
Income Before Income Taxes	556	549
Income Tax Benefit (Expense)	(79)	(109)
Net Income (Loss)	477	440
PSEG Power [Member]
Operating Revenues	1,167	1,220
Operating Expenses [Abstract]
Energy Costs	682	676
Operation and Maintenance	222	241
Depreciation and Amortization	92	94
Total Operating Expenses	996	1,011
OPERATING INCOME	171	209
Income from Equity Method Investments	3	3
Net Gains (Losses) on Trust Investments	58	(220)
Other Income (Deductions)	(4)	(23)
Non-Operating Pension and OPEB Credits (Costs)	12	8
Interest Expense	(27)	(34)
Income Before Income Taxes	213	(57)
Income Tax Benefit (Expense)	(52)	70
Net Income (Loss)	$ 161	$ 13