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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Operating Loss Carryforwards [Line Items] |  |  |
U.S. federal income tax at statutory rate (as a percent) | 21.00% | 21.00% |
Effective tax rates on income from continuing operations (as a percent) | 27.30% | 24.70% |
Valuation allowance related to certain tax attribute carryforward | $ 300 |  |
Deferred tax asset, increase (decrease) in valuation allowance recognized | (2) |  |
Gross unrecognized tax benefits, beginning of year | 1,400 |  | $ 1,400
Unrecognized tax benefits, if recognized would favorably affect the effective tax rate | 1,400 |  | 1,400
Unrecognized tax benefits, interest and penalties accrued | 41 |  | $ 53
Accrued expense (benefit) for the payment of interest and penalties | (12) | $ 0 |
U.S. And Non-U.S. Life Insurance Companies, Available-for-Sale Portfolio |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Valuation allowance | 394 |  |
Non U.S.. Life Insurance Companies, Available-for-Sale Portfolio |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Deferred tax asset, increase (decrease) in valuation allowance recognized | $ (115) |  |

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