Condensed Consolidated Statements of Stockholders Equity Condensed Consolidated Statements of Stockholders Equity (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Comprehensive Income (Loss), Tax	$ 24	$ (6)
Common Stock, Dividends, Per Share, Cash Paid	$ 0.51	$ 0.49
Public Service Electric and Gas Company [Member]
Other Comprehensive Income (Loss), Tax	$ 1	$ 0
PSEG Power [Member]
Other Comprehensive Income (Loss), Tax	$ 21	$ (5)