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		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Payments for Repurchase of Common Stock				$ 0	$ 500
Net Income	[1]	$ 139	$ 114	$ 2,017	$ 243
Weighted Average Common Shares Outstanding, Basic (shares)		498	497	497	498
Effect of Stock Based Compensation Awards, Basic (shares)		0	0	0	0
Total Shares, Basic (shares)		498	497	497	498
Net Income, Basic (dollars per share)		$ 0.28	$ 0.23	$ 4.06	$ 0.49
Weighted Average Common Shares Outstanding, Diluted (shares)		498	497	497	498
Effect of Stock Based Compensation Awards, Diluted (shares)		2	3	3	3
Total Shares, Diluted (shares)		500	500	500	501
Net Income, Diluted (dollars per share)		$ 0.27	$ 0.22	$ 4.03	$ 0.48

[1] Includes net after-tax gains (losses) of $(17) million and $(214) million for the three months and $750 million and $(896) million for the nine months ended September 30, 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. Includes a $239 million after-tax pension charge due to the remeasurement of the qualified pension plans as a result of the pension settlement transaction for the three and nine months ended September 30, 2023. See Note 9. Pension and Other Postretirement Benefits (OPEB) .