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FINANCIAL INSTRUMENTS - Level 3 Rollforward Assets (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Financial assets    
Balance, beginning of period $ 7,068  
Balance, end of period 7,004 $ 7,068
Level 3    
Financial assets    
Balance, beginning of period 2,060 1,682
Acquisitions 61 553
Dispositions (178) (88)
Fair value gains, net and OCI (25) 366
Other 0 (453)
Balance, end of period $ 1,918 $ 2,060