v3.25.0.1
Restructuring Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Restructuring charges      
Restructuring Charges, 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
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
Allergan integration plan | Employee Severance | Cost of products sold      
Restructuring charges      
Charges associated with integration or restructuring plans   89 117
Allergan integration plan | Employee Severance | Research and development      
Restructuring charges      
Charges associated with integration or restructuring plans   7 23
Allergan integration plan | Employee Severance | Selling, general and administrative      
Restructuring charges      
Charges associated with integration or restructuring plans   192 399
Other restructuring      
Restructuring reserve rollforward      
Accrued balance beginning of the period $ 196 176 33
Integration and restructuring charges 168 107 193
Payments and other adjustments (128) (87) (50)
Accrued balance end of the period 236 196 176
Other restructuring | Employee Severance      
Restructuring charges      
Charges associated with integration or restructuring plans $ 189 $ 132 $ 241