Trust Investments (Fair Value Of Rabbi Trust) (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Schedule of Trust Investments [Line Items]
Rabbi Trust	$ 179	$ 183
Rabbi Trust [Member]
Schedule of Trust Investments [Line Items]
Rabbi Trust	179	183
Public Service Electric and Gas Company
Schedule of Trust Investments [Line Items]
Rabbi Trust	32	32
Public Service Electric and Gas Company | Rabbi Trust [Member]
Schedule of Trust Investments [Line Items]
Rabbi Trust	32	32
PSEG Power & Other | Rabbi Trust [Member]
Schedule of Trust Investments [Line Items]
Rabbi Trust	$ 147	$ 151