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LICENSING AGREEMENTS AND ACQUISITIONS - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended
Jun. 30, 2023
Jan. 17, 2023
Jan. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Business Acquisition [Line Items]            
Goodwill $ 11,628       $ 11,547 $ 12,457
Bausch + Lomb | XIIDRA® And Certain Other Ophthalmology Assets Acquisition            
Business Acquisition [Line Items]            
Expected up-front payment $ 1,750          
Bausch + Lomb | XIIDRA® And Certain Other Ophthalmology Assets Acquisition | Forecast            
Business Acquisition [Line Items]            
Potential milestone obligations (up to)       $ 750    
Bausch + Lomb | AcuFocus, Inc. Acquisition            
Business Acquisition [Line Items]            
Up-front payment   $ 35        
Payments to acquire business     $ 31      
Purchase price, repayment term   18 months        
Contingent consideration, liability   $ 5        
Intangible assets, net   28        
Goodwill   8        
Other assets   9        
Liabilities   $ 6