v3.26.1
Contingencies and Certain Commitments - Patent Litigation (Details)
$ in Millions
1 Months Ended 12 Months Ended
Jul. 31, 2026
patent
Apr. 30, 2026
case
Mar. 29, 2026
patent
Jan. 31, 2026
patent
Sep. 28, 2025
patent
Jul. 31, 2025
patent
Mar. 30, 2025
patent
Aug. 31, 2024
patent
Apr. 30, 2024
patent
Dec. 31, 2024
patent
Dec. 31, 2023
patent
Dec. 31, 2022
patent
Jun. 28, 2026
USD ($)
Gain Contingencies [Line Items]                          
Threshold for disclosure of proceedings under environmental laws | $                         $ 1
Vyndaqel Litigation Case [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 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         3                
Comirnaty [Member] | Bayer Cropscience LLC, Monsanto Company and Monsanto Technology, LLC US Patent Infringement Case                          
Gain Contingencies [Line Items]                          
Loss contingency, number of patents allegedly infringed upon       1                  
Comirnaty [Member] | Sanofi US Patent Infringement Case | Subsequent Event [Member]                          
Gain Contingencies [Line Items]                          
Loss contingency, number of patents allegedly infringed upon 8