Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	$ 3	$ (5)	$ (15)	$ (30)
Unrealized Gains (Losses) on Cash Flow Hedges, Tax	(1)	0	(1)	6
Pension/OPEB adjustment, tax	(1)	7	(3)	1
Public Service Electric and Gas Company [Member]
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	0	0	(1)	(1)
PSEG Power [Member]
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	2	(4)	(14)	(26)
Pension/OPEB adjustment, tax	$ (1)	$ 5	$ (2)	$ 0