Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net Income (Loss)	$ 451	$ 153	$ 899	$ 853
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	20	18	28	39
Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit	3	(13)	0	(17)
Pension/Other Postretirement Benefit (OPEB) adjustment, net of tax (expense) benefit	3	4	6	4
Other Comprehensive Income (Loss), net of tax	26	9	34	26
COMPREHENSIVE INCOME (LOSS)	477	162	933	879
Public Service Electric and Gas Company [Member]
Net Income (Loss)	283	227	723	630
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	1	1	1	2
Other Comprehensive Income (Loss), net of tax	1	1	1	2
COMPREHENSIVE INCOME (LOSS)	284	228	724	632
PSEG Power [Member]
Net Income (Loss)	170	(40)	183	256
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	15	15	22	31
Pension/Other Postretirement Benefit (OPEB) adjustment, net of tax (expense) benefit	3	3	5	3
Other Comprehensive Income (Loss), net of tax	18	18	27	34
COMPREHENSIVE INCOME (LOSS)	$ 188	$ (22)	$ 210	$ 290