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Investments - Carrying Amounts of Other Invested Assets (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Investments [Line Items] |  |
Alternative investments | $ 4,151 | $ 4,032
All other investments | 1,793 | 1,986
Total | 9,987 | 9,828
Accumulated depreciation on investment in real estate | 138 | 161
Hedge Funds |  |
Investments [Line Items] |  |
Total | 190 | 187
Private equity funds |  |
Investments [Line Items] |  |
Alternative investments | 3,269 | 3,105
Total | 3,700 | 3,600
Alternative equity security |  |
Investments [Line Items] |  |
All other investments | 300 | 300
Corebridge Financial Inc |  |
Investments [Line Items] |  |
Retained investment in Corebridge using fair value option | $ 4,043 | $ 3,810

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