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Commitments And Contingent Liabilities (Litigation) (Detail) - PSEG Power [Member] - Sewaren 7 Litigation [Member] - USD ($)
$ in Millions
Mar. 31, 2024
Jan. 31, 2021
Loss Contingencies [Line Items]    
Original Claim Amount $ 93  
Maximum [Member]    
Loss Contingencies [Line Items]    
Complaint amount   $ 68