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INVESTMENTS - Trading 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 $ 86 $ 82 $ (198)
Net investment gains (losses) recognized on securities sold during the period 2 (5) 0
Unrealized and realized gains (losses) on trading securities 88 77 (198)
Interest and dividend income from trading securities 71 33 29
Net investment income (loss) from trading securities $ 159 $ 110 $ (169)