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INVESTMENTS - Schedule of Components of Net Realized Capital Gains (Losses) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Debt Securities, Available-for-Sale [Line Items] |  |  |  |
Net gains (losses) on investments | $ (17) | $ 5 | $ (24) | $ 10
Fixed maturities | Market Value |  |  |  |
Debt Securities, Available-for-Sale [Line Items] |  |  |  |
Allowance for credit losses | 4 | 0 | 6 | (8)
Fixed maturities | Fair Value |  |  |  |
Debt Securities, Available-for-Sale [Line Items] |  |  |  |
Net realized gains (losses) from dispositions | (15) | (3) | (22) | (1)
Equity securities | Market Value |  |  |  |
Debt Securities, Available-for-Sale [Line Items] |  |  |  |
Gains (losses) from fair value adjustments | (5) | 8 | (8) | 12
Equity securities | Fair Value |  |  |  |
Debt Securities, Available-for-Sale [Line Items] |  |  |  |
Net realized gains (losses) from dispositions | 0 | 0 | 1 | 7
Other invested assets |  |  |  |
Debt Securities, Available-for-Sale [Line Items] |  |  |  |
Net realized gains (losses) from dispositions | $ (1) | $ 0 | $ (1) | $ 0

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