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Commitments And Contingent Liabilities (Litigation) (Detail) - PSEG Power [Member] - Sewaren 7 Litigation [Member] - USD ($) $ in Millions | Sep. 30, 2023 | Jan. 31, 2021
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Loss Contingencies [Line Items] |  |
Original Claim Amount | $ 93 |
Maximum [Member] |  |
Loss Contingencies [Line Items] |  |
Complaint amount |  | $ 68

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