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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 $ 11,767  
Cost at end of year 14,214 $ 11,767
Cost    
Reconciliation of changes in intangible assets other than goodwill    
Cost at beginning of the year 13,233 15,695
Acquisitions through business combinations 3,734 532
Additions, net of disposals 67 102
Assets held by subsidiaries disposed during the period (957) 0
Non-cash additions, intangible assets other than goodwill 271 (2,118)
Foreign currency translation (563) (978)
Cost at end of year 15,785 13,233
Accumulated amortization    
Reconciliation of changes in intangible assets other than goodwill    
Cost at beginning of the year (1,466) (1,309)
Assets held by subsidiaries disposed during the period 281 0
Non-cash disposals 26 216
Amortization (514) (458)
Foreign currency translation 102 85
Cost at end of year $ (1,571) $ (1,466)