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Investments - Schedule of Other Investments by Asset Type (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Investments [Line Items] |  |
Other investments | $ 1,004 | $ 1,055
Bank loans, net |  |
Investments [Line Items] |  |
Other investments | 164 | 224
Real estate |  |
Investments [Line Items] |  |
Other investments | 717 | 709
Policy loans |  |
Investments [Line Items] |  |
Other investments | 120 | 119
Derivatives |  |
Investments [Line Items] |  |
Other investments | 1 | 1
Other |  |
Investments [Line Items] |  |
Other investments | $ 2 | $ 2

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