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Pension, Other Postretirement Benefits (OPEB) and Savings Plans - Schedule of Amount Paid for Employer Matching Contributions (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]      
Total Employer Matching Contributions $ 45 $ 43 $ 42
Public Service Electric and Gas Company      
Defined Benefit Plan Disclosure [Line Items]      
Total Employer Matching Contributions 31 29 28
Other [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Total Employer Matching Contributions $ 14 $ 14 $ 14