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Pension, Other Postretirement Benefits (OPEB) and Savings Plans - Changes In The Benefit Obligation And The Fair Value Of Plan Assets (Parenthetical) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Deferred Costs and Other Assets | $ 10,341 | $ 9,337
Regulatory Assets | 6,125 | 5,157
Pension Benefits [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Accumulated Other Comprehensive Income (Loss), Defined Benefit Pension and Other Postretirement Plans, Before Tax | 107 | 143
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax | 76 | 102
Regulatory Assets | 1,227 | 1,427
Deferred Costs and Other Assets | 134 | 141
Deferred Liabilities | 9 |
Public Service Electric and Gas Company |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Regulatory Assets | 6,641 | 5,430
Deferred Costs and Other Assets | 6,544 | 5,601
Regulatory Assets | 6,125 | 5,157
Public Service Electric and Gas Company | Pension Ratemaking deferral [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Regulatory Assets | $ 103 | $ 55

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