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Pension And OPEB (Schedule Of Pension And OPEB Costs) (Detail) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Pension Benefits [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Benefits (Credits) Costs | $ 17 | $ 20
Pension Benefits [Member] | Public Service Electric and Gas Company [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Benefits (Credits) Costs | 11 | 13
Pension Benefits [Member] | PSEG Power & Other |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Benefits (Credits) Costs | 6 | 7
OPEB [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Benefits (Credits) Costs | 1 | (11)
OPEB [Member] | Public Service Electric and Gas Company [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Benefits (Credits) Costs | 0 | (10)
OPEB [Member] | PSEG Power & Other |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Benefits (Credits) Costs | $ 1 | $ (1)

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