v3.24.0.1
Integration and Restructuring Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
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 $ 2,500    
Allergan integration plan | Employee Severance      
Restructuring charges      
Charges associated with integration or restructuring plans 288 $ 539 $ 587
Restructuring reserve rollforward      
Accrued balance beginning of the period 107 255 387
Integration and restructuring charges 274 377 526
Payments and other adjustments (338) (525) (658)
Accrued balance end of the period 43 107 255
Allergan integration plan | Employee Severance | Cost of products sold      
Restructuring charges      
Charges associated with integration or restructuring plans 89 117 132
Allergan integration plan | Employee Severance | Research and development      
Restructuring charges      
Charges associated with integration or restructuring plans 7 23 102
Allergan integration plan | Employee Severance | Selling, general and administrative      
Restructuring charges      
Charges associated with integration or restructuring plans 192 399 353
Other restructuring      
Restructuring reserve rollforward      
Accrued balance beginning of the period 176 33 90
Integration and restructuring charges 107 193 54
Payments and other adjustments (87) (50) (111)
Accrued balance end of the period 196 176 33
Other restructuring | Employee Severance      
Restructuring charges      
Charges associated with integration or restructuring plans $ 132 $ 241 $ 59