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AVAILABLE-FOR-SALE FIXED MATURITY SECURITIES - Narrative (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items] |  |
Fair Value | $ 52,597 | $ 18,777
Fixed maturity securities | Investment Grade | External Credit Rating, Investment Grade |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Percentage | 93.00% | 89.00%
Deposits |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Fair Value | $ 165 | $ 153
Bonds pledged | Bonds |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Fair Value | $ 10,100 | $ 168

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