Earnings Per Share (EPS) And Dividends (Basic And Diluted Earnings Per Share Computation) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Payments for Repurchase of Common Stock		$ 0	$ 500
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		3,000
Net Income	[1]	$ 1,287	$ (2)
Weighted Average Common Shares Outstanding, Basic (shares)		497,000	501,000
Effect of Stock Based Compensation Awards, Basic (shares)		0	0
Total Shares, Basic (shares)		497,000	501,000
Net Income, Basic (dollars per share)		$ 2.59	$ 0.00
Weighted Average Common Shares Outstanding, Diluted (shares)		497,000	501,000
Effect of Stock Based Compensation Awards, Diluted (shares)		3,000	0
Total Shares, Diluted (shares)		500,000	501,000
Net Income, Diluted (dollars per share)		$ 2.58	$ 0.00

[1] Includes net after-tax gains of $555 million and net after-tax losses of $608 million for the three months ended March 31, 2023 and 2022, 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.