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Contingencies and Certain Commitments - Patent Litigation (Details)
$ in Millions
1 Months Ended
Jul. 31, 2025
patent
Mar. 30, 2025
patent
Feb. 28, 2025
patent
Jan. 31, 2025
company
Aug. 31, 2024
patent
Jul. 31, 2024
patent
Apr. 30, 2024
patent
Mar. 31, 2024
patent
Nov. 30, 2023
patent
Jun. 30, 2023
patent
May 31, 2023
patent
Apr. 30, 2023
patent
Sep. 30, 2022
patent
Aug. 31, 2022
patent
company
Jul. 31, 2022
patent
Jun. 29, 2025
USD ($)
Gain Contingencies [Line Items]                                
Threshold for disclosure of proceedings under environmental laws | $                               $ 1
Mektovi [Member] | Pfizer Versus Several Generic Manufacturers [Member] | Patent Infringement [Member] | Pending Litigation [Member]                                
Gain Contingencies [Line Items]                                
Number of companies in litigation case | company                           2    
Gain contingency, number of patents allegedly infringed upon                         6      
Mektovi [Member] | Pfizer Versus Several Generic Manufacturers [Member] | Patent Infringement [Member] | Pending Litigation [Member] | Expiring 2030 [Member]                                
Gain Contingencies [Line Items]                                
Gain contingency, number of patents allegedly infringed upon                           2    
Mektovi [Member] | Pfizer Versus Several Generic Manufacturers [Member] | Patent Infringement [Member] | Pending Litigation [Member] | Expiring 2033 [Member]                                
Gain Contingencies [Line Items]                                
Gain contingency, number of patents allegedly infringed upon                           2    
Mektovi [Member] | Pfizer Versus Teva Pharmaceuticals, Inc. [Member] | Patent Infringement [Member] | Pending Litigation [Member]                                
Gain Contingencies [Line Items]                                
Gain contingency, number of patents allegedly infringed upon                   3            
Mektovi [Member] | Pfizer Versus Teva Pharmaceuticals, Inc. [Member] | Patent Non-Infringement [Member] | Pending Litigation [Member] | Teva Pharmaceuticals, Inc [Member]                                
Gain Contingencies [Line Items]                                
Gain contingency, number of patents allegedly infringed upon                           2    
Mektovi [Member] | Pfizer and Versus Several Generic Manufacturers | Patent Infringement [Member] | Settled Litigation [Member]                                
Gain Contingencies [Line Items]                                
Number of companies | company       1                        
Comirnaty [Member] | Alnylam Patent Infringement Case [Member]                                
Gain Contingencies [Line Items]                                
Loss contingency, number of patents allegedly infringed upon                     4          
Loss contingency, number of patents dismissed     1                          
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 ruled invalid   2                            
Loss contingency, patents under review               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] | Subsequent Event [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] | Subsequent Event [Member]                                
Gain Contingencies [Line Items]                                
Loss contingency, number of patents allegedly infringed upon 2                              
Comirnaty [Member] | Pfizer, BioNTech and BioNTech Manufacturing GmbH Versus CureVac, Judgment of Non-Infringement [Member]                                
Gain Contingencies [Line Items]                                
Loss contingency, number of patents not infringed                             3  
Loss contingency, number of patents found infringed                     3