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Income Taxes - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Income Taxes [Line Items] |  |  |
Effective income tax rate reconciliation, at federal statutory income tax rate, percent | 21.00% |  |
Effective Income Tax Rate Reconciliation, Percent, Total | 2.90% | 16.80% | (2.90%)
Regulatory Liabilities | $ 2,271 | $ 2,075 |
NOL Carryforwards | 26 |  |
Tax Adjustment Credit | (145) | (232) | $ (193)
Income tax benefit | (53) | (518) | 29
Unrecognized tax benefit, which would affect the effective tax rate if recognized | $ 178 | $ 79 | $ 85
Public Service Electric and Gas Company [Member] |  |  |
Income Taxes [Line Items] |  |  |
Effective Income Tax Rate Reconciliation, Percent, Total | 16.20% | 9.60% | 14.60%
Regulatory Liabilities | $ 2,271 | $ 2,075 |
NOL Carryforwards | 108 |  |
Tax Adjustment Credit | (145) | (232) | $ (193)
Excess deferred income tax flowback | 202 |  |
Income tax benefit | (298) | (160) | (267)
Unrecognized tax benefit, which would affect the effective tax rate if recognized | 2 | $ 2 | $ 6
Public Service Electric and Gas Company [Member] | Nuclear PTCs |  |  |
Income Taxes [Line Items] |  |  |
Income tax benefit | 350 |  |
Unrecognized tax benefit, which would affect the effective tax rate if recognized | 89 |  |
Public Service Electric and Gas Company [Member] | Excess Deferred Income Taxes excluding amounts from previously realized repair deductions [Member] |  |  |
Income Taxes [Line Items] |  |  |
Regulatory Liabilities | 1,800 |  |
Reduction in Regulatory Liability | 122 |  |
Reduction in Deferred Tax Liabilities | $ 1,300 |  |

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