v3.26.1
Contingencies and Certain Commitments - Patent Litigation (Details)
$ in Millions
1 Months Ended
Apr. 30, 2026
case
Mar. 29, 2026
USD ($)
patent
Jul. 31, 2025
patent
Mar. 30, 2025
patent
Aug. 31, 2024
patent
Jul. 31, 2024
patent
Apr. 30, 2024
patent
Mar. 31, 2024
patent
Nov. 30, 2023
patent
Apr. 30, 2023
patent
Sep. 30, 2022
patent
Aug. 31, 2022
patent
Gain Contingencies [Line Items]                        
Threshold for disclosure of proceedings under environmental laws | $   $ 1                    
Vyndaqel Litigation Case [Member] | Subsequent Event [Member]                        
Gain Contingencies [Line Items]                        
Number of cases settled | case 3                      
Micro Labs, Changzhou and Biocon Patent Infringement Case [Member]                        
Gain Contingencies [Line Items]                        
Number of patents being challenged   3                    
Comirnaty [Member] | ModernaTX U.S. Patent Infringement Case [Member]                        
Gain Contingencies [Line Items]                        
Loss contingency, number of patents allegedly infringed upon                       3
Loss contingency, patents under review               2        
Loss contingency, patents ruled invalid       2                
Comirnaty [Member] | ModernaTX European Patent Infringement Case [Member]                        
Gain Contingencies [Line Items]                        
Loss contingency, number of patents allegedly infringed upon                     2 2
Loss contingency, patents allegedly infringed and subsequently revoked                 1      
Loss contingency, patents ruled invalid and subsequently revoked           1            
Comirnaty [Member] | Arbutus and Genevant U.S. Patent Infringement Case [Member]                        
Gain Contingencies [Line Items]                        
Loss contingency, number of patents allegedly infringed upon                   5    
Comirnaty [Member] | GlaxoSmithKline Biologics SA and GlaxoSmithKline LLC US Patent Infringement Case [Member]                        
Gain Contingencies [Line Items]                        
Loss contingency, number of patents allegedly infringed upon         3   5          
Comirnaty [Member] | GlaxoSmithKline Biologics SA And GlaxoSmithKline LLC Ireland Patent Infringement Case [Member]                        
Gain Contingencies [Line Items]                        
Loss contingency, number of patents allegedly infringed upon     3                  
Comirnaty [Member] | GlaxoSmithKline Biologics SA And GlaxoSmithKline LLC Unified Patent Court Patent Infringement Case [Member]                        
Gain Contingencies [Line Items]                        
Loss contingency, number of patents allegedly infringed upon     2