Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net Income	$ 403	$ 412	$ 1,256	$ 1,239
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	10	(4)	49	(23)
Unrealized Gains (Losses) on Cash Flow Hedges, net of tax (expense) benefit	1	0	(16)	(1)
Pension/Other Postretirement Benefit (OPEB) adjustment, net of tax (expense) benefit	(17)	7	(13)	22
Other Comprehensive Income (Loss), net of tax	(6)	3	20	(2)
COMPREHENSIVE INCOME	397	415	1,276	1,237
Public Service Electric and Gas Company [Member]
Net Income	344	278	974	828
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	1	(1)	3	(1)
Other Comprehensive Income (Loss), net of tax	1	(1)	3	(1)
COMPREHENSIVE INCOME	345	277	977	827
PSEG Power [Member]
Net Income	53	125	309	400
Other Comprehensive Income (Loss), net of tax
Unrealized Gains (Losses) on Available-for-Sale Securities, net of tax (expense) benefit	7	(4)	38	(19)
Pension/Other Postretirement Benefit (OPEB) adjustment, net of tax (expense) benefit	(12)	7	(9)	19
Other Comprehensive Income (Loss), net of tax	(5)	3	29	0
COMPREHENSIVE INCOME	$ 48	$ 128	$ 338	$ 400