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INVESTMENTS - Equity Securities (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]    
Net investment gains (losses) recognized during the period on securities held at the end of the period $ 0 $ 15
Net investment gains (losses) recognized on securities sold during the period 0 (1)
Unrealized and realized gains (losses) on equity securities $ 0 $ 14