Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net Income (Loss)	$ (177)	$ 451	$ 471	$ 899
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	16	20	(26)	28
Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit	0	3	1	0
Pension/Other Postretirement Benefit (OPEB) adjustment, net of tax (expense) benefit	4	3	7	6
Other Comprehensive Income (Loss), net of tax	20	26	(18)	34
COMPREHENSIVE INCOME (LOSS)	(157)	477	453	933
Public Service Electric and Gas Company [Member]
Net Income (Loss)	309	283	786	723
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	1	1	(2)	1
Other Comprehensive Income (Loss), net of tax	1	1	(2)	1
COMPREHENSIVE INCOME (LOSS)	310	284	784	724
PSEG Power [Member]
Net Income (Loss)	(483)	170	(322)	183
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	12	15	(20)	22
Pension/Other Postretirement Benefit (OPEB) adjustment, net of tax (expense) benefit	3	3	5	5
Other Comprehensive Income (Loss), net of tax	15	18	(15)	27
COMPREHENSIVE INCOME (LOSS)	$ (468)	$ 188	$ (337)	$ 210