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INTANGIBLE ASSETS - Reconciliation (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Reconciliation of changes in intangible assets other than goodwill    
Cost at beginning of the year $ 14,214  
Cost at end of year 13,524 $ 14,214
Cost    
Reconciliation of changes in intangible assets other than goodwill    
Cost at beginning of the year 15,785 13,233
Acquisitions through business combinations, intangible assets and goodwill 72 3,734
Additions, net of disposals 71 67
Assets reclassified as held for sale (816) 0
Assets held by subsidiaries disposed during the period 0 (957)
Non-cash additions 68 271
Foreign currency translation 15 (563)
Cost at end of year $ 15,195 $ 15,785