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INTANGIBLE ASSETS - Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Reconciliation of changes in intangible assets other than goodwill    
Cost at beginning of the year $ 2,948  
Non cash additions 5 $ 0
Cost at end of year 2,687 2,948
Cost    
Reconciliation of changes in intangible assets other than goodwill    
Cost at beginning of the year 3,527 4,479
Additions, net of disposals 38 35
Foreign currency translation (238) (987)
Cost at end of year $ 3,332 $ 3,527