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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

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