Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Operating Revenues	$ 2,316	$ 2,016	$ 5,296	$ 4,834
Operating Expenses [Abstract]
Energy Costs	704	600	1,828	1,552
Operation and Maintenance	750	725	1,506	1,479
Depreciation and Amortization	307	280	621	560
Loss on Asset Dispositions	395	0	395	0
Total Operating Expenses	2,156	1,605	4,350	3,591
OPERATING INCOME	160	411	946	1,243
Income from Equity Method Investments	5	5	7	7
Net Gains (Losses) on Trust Investments	39	8	167	(14)
Other Income (Deductions)	33	34	66	66
Non-Operating Pension and OPEB Credits (Costs)	33	19	66	38
Interest Expense	(137)	(111)	(270)	(214)
Income Before Income Taxes	133	366	982	1,126
Income Tax Benefit (Expense)	20	(97)	(129)	(299)
Net Income	$ 153	$ 269	$ 853	$ 827
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
BASIC (shares)	504	504	504	504
DILUTED (shares)	507	507	507	507
EARNINGS PER SHARE:
BASIC (dollars per share)	$ 0.30	$ 0.53	$ 1.69	$ 1.64
DILUTED (dollars per share)	$ 0.30	$ 0.53	$ 1.68	$ 1.63
Public Service Electric and Gas Company [Member]
Operating Revenues	$ 1,382	$ 1,386	$ 3,414	$ 3,231
Operating Expenses [Abstract]
Energy Costs	529	488	1,476	1,270
Operation and Maintenance	369	353	777	744
Depreciation and Amortization	202	187	414	377
Total Operating Expenses	1,100	1,028	2,667	2,391
OPERATING INCOME	282	358	747	840
Net Gains (Losses) on Trust Investments	0	0	1	0
Other Income (Deductions)	19	20	38	40
Non-Operating Pension and OPEB Credits (Costs)	29	15	59	30
Interest Expense	(89)	(82)	(176)	(163)
Income Before Income Taxes	241	311	669	747
Income Tax Benefit (Expense)	(14)	(80)	(39)	(197)
Net Income	227	231	630	550
PSEG Power [Member]
Operating Revenues	1,083	767	2,499	2,170
Operating Expenses [Abstract]
Energy Costs	411	373	1,197	1,119
Operation and Maintenance	268	268	503	514
Depreciation and Amortization	95	84	189	166
Loss on Asset Dispositions	395		395	0
Total Operating Expenses	1,169	725	2,284	1,799
OPERATING INCOME	(86)	42	215	371
Income from Equity Method Investments	5	5	7	7
Net Gains (Losses) on Trust Investments	38	8	164	(14)
Other Income (Deductions)	15	13	28	24
Non-Operating Pension and OPEB Credits (Costs)	3	3	6	7
Interest Expense	(26)	(11)	(51)	(18)
Income Before Income Taxes	(51)	60	369	377
Income Tax Benefit (Expense)	11	(19)	(113)	(102)
Net Income	$ (40)	$ 41	$ 256	$ 275