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INVESTMENTS - Investment Gains (Losses), Net (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Net Investment Income [Line Items]      
Investment gains (losses), net $ (133) $ (713) $ (945)
Fixed maturities      
Net Investment Income [Line Items]      
Investment gains (losses), net (58) (563) (868)
Mortgage loans on real estate      
Net Investment Income [Line Items]      
Investment gains (losses), net (77) (151) (66)
Other equity investments      
Net Investment Income [Line Items]      
Investment gains (losses), net 0 0 0
Other      
Net Investment Income [Line Items]      
Investment gains (losses), net $ 2 $ 1 $ (11)