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Leases - Reconciliation of Undiscounted Cash Flows (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Lessee, Lease, Description [Line Items]    
Total Minimum Lease Payments $ 210 $ 236
Reconciling Amount due to Discount Rate (29) (36)
Total Discounted Operating Lease Liabilities 181 200
Public Service Electric and Gas Company [Member]    
Lessee, Lease, Description [Line Items]    
Total Minimum Lease Payments 116 125
Reconciling Amount due to Discount Rate (18) (21)
Total Discounted Operating Lease Liabilities 98 104
Other Segments    
Lessee, Lease, Description [Line Items]    
Total Minimum Lease Payments 94 111
Reconciling Amount due to Discount Rate (11) (15)
Total Discounted Operating Lease Liabilities $ 83 $ 96