Condensed Consolidated Statements of Stockholders Equity Condensed Consolidated Statements of Stockholders Equity (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Comprehensive Income (Loss), Tax	$ 4	$ 1	$ 16	$ (19)
Common Stock, Dividends, Per Share, Cash Paid	$ 0.51	$ 0.49	$ 1.53	$ 1.47
Public Service Electric and Gas Company [Member]
Other Comprehensive Income (Loss), Tax	$ 0	$ 0	$ 1	$ (1)
PSEG Power [Member]
Other Comprehensive Income (Loss), Tax	$ 3	$ 1	$ 15	$ (16)