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Investments - Accrued Interest (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
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Schedule of Available for Sale Securities |  |
Accrued investment income | $ 436 | $ 423
Mortgage loans |  |
Schedule of Available for Sale Securities |  |
Accrued investment income | 3 | 3
Bank loans, net |  |
Schedule of Available for Sale Securities |  |
Accrued investment income | $ 4 | $ 3

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