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Separate Account Assets and Liabilities - Separate Account Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Fair Value, Separate Account Asset |  |  |
Separate account assets | $ 78,114 | $ 77,457 |
Gain (loss) recognized on assets transferred to separate account | 0 | 0 | $ 0
Mutual funds |  |  |
Fair Value, Separate Account Asset |  |  |
Separate account assets | 75,576 | 74,634 |
Property/real estate |  |  |
Fair Value, Separate Account Asset |  |  |
Separate account assets | 1,682 | 1,784 |
Equity securities |  |  |
Fair Value, Separate Account Asset |  |  |
Separate account assets | 514 | 553 |
Debt securities |  |  |
Fair Value, Separate Account Asset |  |  |
Separate account assets | 175 | 285 |
Cash and cash equivalents |  |  |
Fair Value, Separate Account Asset |  |  |
Separate account assets | 120 | 147 |
Other |  |  |
Fair Value, Separate Account Asset |  |  |
Separate account assets | $ 47 | $ 54 |

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