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INVESTMENTS - Equity Securities (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]      
Net investment gains (losses) recognized during the period on securities held at the end of the period $ 21 $ 35 $ (114)
Net investment gains (losses) recognized on securities sold during the period 0 (8) (36)
Unrealized and realized gains (losses) on equity securities $ 21 $ 27 $ (150)