v3.22.4
Integration and Restructuring Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Restructuring charges      
Restructuring, Incurred Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Cost of products sold, Research and development, Selling, general and administrative Cost of products sold, Research and development, Selling, general and administrative Cost of products sold, Research and development, Selling, general and administrative
Allergan integration plan      
Restructuring charges      
Restructuring and Related Cost, Cost Incurred to Date $ 2,300    
Allergan integration plan | Employee Severance      
Restructuring charges      
Charges associated with integration or restructuring plans (8) $ 69 $ 696
Restructuring reserve rollforward      
Accrued balance beginning of the period 222 367  
Integration and restructuring charges (8) 65 594
Payments and other adjustments (116) (210) (227)
Accrued balance end of the period 98 222 367
Allergan integration plan | Employee Severance | Cost of products sold      
Restructuring charges      
Charges associated with integration or restructuring plans (4) 5 109
Allergan integration plan | Employee Severance | Research and development      
Restructuring charges      
Charges associated with integration or restructuring plans 0 0 199
Allergan integration plan | Employee Severance | Selling, general and administrative      
Restructuring charges      
Charges associated with integration or restructuring plans (4) 64 388
Allergan integration plan | Other restructuring      
Restructuring charges      
Charges associated with integration or restructuring plans 547 518 435
Restructuring reserve rollforward      
Accrued balance beginning of the period 33 20  
Integration and restructuring charges 385 461 435
Payments and other adjustments (409) (448) (415)
Accrued balance end of the period 9 33 20
Allergan integration plan | Other restructuring | Cost of products sold      
Restructuring charges      
Charges associated with integration or restructuring plans 121 127 21
Allergan integration plan | Other restructuring | Research and development      
Restructuring charges      
Charges associated with integration or restructuring plans 23 102 177
Allergan integration plan | Other restructuring | Selling, general and administrative      
Restructuring charges      
Charges associated with integration or restructuring plans 403 289 237
Other restructuring      
Restructuring reserve rollforward      
Accrued balance beginning of the period 33 90 140
Integration and restructuring charges 193 54 58
Payments and other adjustments (50) (111) (108)
Accrued balance end of the period 176 33 90
Other restructuring | Employee Severance      
Restructuring charges      
Charges associated with integration or restructuring plans $ 241 $ 59 $ 60