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BUSINESS OPTIMIZATION CHARGES - Summary of Activity in Reserves Related to Restructuring Initiatives (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Restructuring Reserve [Roll Forward]        
Charges $ 287 $ 26 $ 397 $ 93
Severance and Other Employee Related Costs        
Restructuring Reserve [Roll Forward]        
Reserve, beginning balance     107  
Charges     132  
Payments     (63)  
Reserve adjustments     (12)  
Currency translation     (1)  
Reserve, ending balance $ 163   $ 163