v3.25.1
Financial Risk Management Activities - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Derivatives, Fair Value [Line Items]      
Aoci, cash flow hedge, cumulative gain (loss), after tax $ 16   $ 36
Unrealized gain to be reclassified to earnings during the next twelve months 3    
Reclassification from AOCL, net of tax (2) $ (2)  
Derivative, fair value, net (30)   75
Issuance of Long-Term Debt 1,900 2,250  
PSEG [Member]      
Derivatives, Fair Value [Line Items]      
Issuance of Long-Term Debt 1,000    
PSEG Power      
Derivatives, Fair Value [Line Items]      
Fair value of derivatives with credit-risk related contingent features 108   17
Aggregate fair value of derivative contracts in a liability position that contains triggers for additional collateral 22   11
Additional collateral aggregate fair value 86   6
Derivative, fair value, net (30)   43
Public Service Electric and Gas Company [Member]      
Derivatives, Fair Value [Line Items]      
Issuance of Long-Term Debt 900 1,000  
Total credit exposure with counterparties $ 80    
Investment Grade - External Rating | PSEG Power      
Derivatives, Fair Value [Line Items]      
Percentage of credit exposure 100.00%    
Investment Grade - External Rating | PSEG Power | Minimum [Member]      
Derivatives, Fair Value [Line Items]      
Percentage of credit exposure 10.00%    
Treasury Lock [Member]      
Derivatives, Fair Value [Line Items]      
Interest rate hedge outstanding $ 800    
Derivative, fair value, net 4    
Cash Flow Hedges [Member]      
Derivatives, Fair Value [Line Items]      
Reclassification from AOCL, net of tax $ 0 $ 2 $ 9