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INVESTMENTS - Equity Securities (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]    
Net investment gains (losses) recognized during the period on securities held at the end of the period $ (114) $ (19)
Net investment gains (losses) recognized on securities sold during the period (36) 45
Unrealized and realized gains (losses) on equity securities $ (150) $ 26