Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	$ (5)	$ 2	$ (30)	$ 15
Unrealized Gains (Losses) on Cash Flow Hedges, Tax	0	0	6	1
Pension/OPEB adjustment, tax	7	(3)	1	(9)
Public Service Electric and Gas Company [Member]
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	0	0	(1)	0
PSEG Power [Member]
Unrealized Gains (Losses) on Available-for-Sale Securities, tax	(4)	2	(26)	13
Pension/OPEB adjustment, tax	$ 5	$ (3)	$ 0	$ (8)