Earnings Per Share (EPS) And Dividends (Basic And Diluted Earnings Per Share Computation) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share, Diluted [Line Items]
Net Income (Loss)	[1],[2]	$ 2,563	$ 1,031	$ (648)
Effect of Stock Based Compensation Awards, Basic		0	0	0
Total Shares, Basic		498,000	498,000	504,000
Effect of Stock Based Compensation Awards, Diluted		2,000	3,000	0
Total Shares, Diluted		500,000	501,000	504,000
Weighted Average Common Shares Outstanding Before Various Effects Basic		498,000	498,000	504,000
Weighted Average Common Shares Outstanding Before Various Effects Diluted		498,000	498,000	504,000
Earnings Per Share, Basic		$ 5.15	$ 2.07	$ (1.29)
Earnings Per Share, Diluted		$ 5.13	$ 2.06	$ (1.29)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		3,000
Payments for Repurchase of Common Stock		$ 0	$ 500	$ 0
Treasury Stock, Shares, Acquired			7,400

[1] 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 in the third quarter of 2023. Includes after-tax impairments of $92 million related to certain Energy Holdings investments and additional adjustments related to the sale of PSEG Power’s fossil generation assets in the year ended December 31, 2022. Includes after-tax impairment losses and other charges, including debt extinguishment costs, related to the sale of the fossil generating assets at PSEG Power of $2,158 million in the year ended December 31, 2021. See Note 3. Asset Dispositions and Impairments for additional information.

[2] Includes net after-tax gain (loss) of $959 million, $(457) million and $(446) million in the years ended December 31, 2023, 2022 and 2021, respectively at PSEG Power related to the impacts of non-trading commodity mark-to-market activity, which consists of the financial impact from positions with future delivery dates.