Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Revenues	$ 2,781	$ 2,980
Operating Expenses [Abstract]
Energy Costs	906	1,124
Operation and Maintenance	754	756
Depreciation and Amortization	324	314
Total Operating Expenses	1,984	2,194
OPERATING INCOME	797	786
Income from Equity Method Investments	3	2
Net Gains (Losses) on Trust Investments	(221)	128
Other Income (Deductions)	4	33
Non-Operating Pension and OPEB Credits (Costs)	62	33
Interest Expense	(153)	(133)
Income Before Income Taxes	492	849
Income Tax Benefit (Expense)	(44)	(149)
Net Income	$ 448	$ 700
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (shares)	504	504
DILUTED (shares)	507	507
EARNINGS PER SHARE:
BASIC (dollars per share)	$ 0.89	$ 1.39
DILUTED (dollars per share)	$ 0.88	$ 1.38
Public Service Electric and Gas Company [Member]
Operating Revenues	$ 1,883	$ 2,032
Operating Expenses [Abstract]
Energy Costs	708	947
Operation and Maintenance	386	408
Depreciation and Amortization	222	212
Total Operating Expenses	1,316	1,567
OPERATING INCOME	567	465
Net Gains (Losses) on Trust Investments	0	1
Other Income (Deductions)	27	19
Non-Operating Pension and OPEB Credits (Costs)	51	30
Interest Expense	(96)	(87)
Income Before Income Taxes	549	428
Income Tax Benefit (Expense)	(109)	(25)
Net Income	440	403
PSEG Power [Member]
Operating Revenues	1,220	1,416
Operating Expenses [Abstract]
Energy Costs	676	786
Operation and Maintenance	241	235
Depreciation and Amortization	94	94
Total Operating Expenses	1,011	1,115
OPERATING INCOME	209	301
Income from Equity Method Investments	3	2
Net Gains (Losses) on Trust Investments	(220)	126
Other Income (Deductions)	(23)	13
Non-Operating Pension and OPEB Credits (Costs)	8	3
Interest Expense	(34)	(25)
Income Before Income Taxes	(57)	420
Income Tax Benefit (Expense)	70	(124)
Net Income	$ 13	$ 296