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INVESTMENTS - Trading Securities (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]      
Net investment gains (losses) recognized during the period on securities held at the end of the period $ (198) $ (274) $ 128
Net investment gains (losses) recognized on securities sold during the period 0 248 42
Unrealized and realized gains (losses) on trading securities (198) (26) 170
Interest and dividend income from trading securities 29 99 217
Net investment income (loss) from trading securities $ (169) $ 73 $ 387