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Pension And OPEB (Schedule Of Pension And OPEB Costs) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Pension Benefits [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Total Benefits (Credits) Costs | $ 17 | $ 20 | $ 34 | $ 40
Pension Benefits [Member] | Public Service Electric and Gas Company [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Total Benefits (Credits) Costs | 10 | 14 | 21 | 27
Pension Benefits [Member] | PSEG Power & Other |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Total Benefits (Credits) Costs | 7 | 6 | 13 | 13
OPEB [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Total Benefits (Credits) Costs | 2 | (10) | 3 | (21)
OPEB [Member] | Public Service Electric and Gas Company [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Total Benefits (Credits) Costs | (1) | (10) | (1) | (20)
OPEB [Member] | PSEG Power & Other |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Total Benefits (Credits) Costs | $ 3 | $ 0 | $ 4 | $ (1)

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