Earnings Per Share (EPS) And Dividends (Basic And Diluted Earnings Per Share Computation) (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Net Income	[1]	$ 532	$ 1,287
Weighted Average Common Shares Outstanding, Basic (shares)		499	497
Effect of Stock Based Compensation Awards, Basic (shares)		0	0
Total Shares, Basic (shares)		499	497
Net Income, Basic (dollars per share)		$ 1.07	$ 2.59
Weighted Average Common Shares Outstanding, Diluted (shares)		499	497
Effect of Stock Based Compensation Awards, Diluted (shares)		1	3
Total Shares, Diluted (shares)		500	500
Net Income, Diluted (dollars per share)		$ 1.06	$ 2.58

[1] Includes net after-tax gains (losses) of $(186) million and $555 million for the three months ended March 31, 2024 and 2023, respectively, at PSEG Power related to the impacts of non-trading commodity mark-to-market activity, which consist of the financial impact from positions with future delivery dates.