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INVESTMENTS - Investments in Variable Interest Entities Not Consolidated (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Variable Interest Entity [Line Items] |  |  |
Fixed maturity securities, available-for-sale, amortized cost |  | $ 69,161 | $ 75,469
Fixed maturity securities, available-for-sale |  | 69,801 | 75,741
Other investments |  | 5,241 | 4,070
Assets, fair value |  | 79,159 | 82,924
Variable Interest Entity, Not Consolidated |  |  |
Variable Interest Entity [Line Items] |  |  |
Fixed maturity securities, available-for-sale, amortized cost |  | 5,741 | 3,998
Fixed maturity securities, available-for-sale |  | 6,196 | 4,259
Other investments | [1] | 351 | 381
Other investments, fair value | [1] | 351 | 381
Assets, amortized cost |  | 6,092 | 4,379
Assets, fair value |  | $ 6,547 | $ 4,640
[1] | Consists entirely of alternative investments in limited partnerships

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