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FAIR VALUE - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value | $ 28,908,000,000 | $ 27,740,000,000
Transfer in and/or (out) of Level 3 | 0 | 0
Other assets | 1,171,000,000 | 941,000,000
Fixed maturity securities |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Fair Value | 2,200,000,000 | 2,000,000,000.0
Fair Value | Investments |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Other assets | $ 239,000,000 | $ 274,000,000

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