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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS -Schedule of Equity Investments (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Equity investments with readily determined fair values    
Net loss/(gain) recognized $ 598 $ (196)
Net loss recognized on investments sold 0 3
Net unrealized loss/(gain) recognized on investments still held 598 (199)
Equity investments without readily determinable fair values    
Upward adjustments (6) (269)
Impairments and downward adjustments 2 1
Cumulative upward adjustments (109)
Cumulative impairments and downward adjustments 52
Equity in net (income)/loss of affiliates $ 50 $ (137)