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Contingencies and Certain Commitments (Patent Litigation) (Details)
$ in Millions
1 Months Ended 12 Months Ended
Jul. 31, 2022
patent
Dec. 31, 2017
patent
defendant
Jul. 03, 2022
USD ($)
Gain Contingencies [Line Items]      
Threshold for disclosure of proceedings under environmental laws | $     $ 1
Comirnaty direct sales and alliance revenues [Member] | German Regional Court, BioNTech Patent Infringement [Member] | Subsequent Event [Member]      
Gain Contingencies [Line Items]      
Loss contingency, number of patents allegedly infringed upon 3    
Loss contingency, number of patents allegedly infringed upon, expired 1    
Comirnaty direct sales and alliance revenues [Member] | Pfizer, BioNTech and BioNTech Manufacturing GmbH Versus CureVac, Judgment Of Non-Infringement [Member] | Subsequent Event [Member]      
Gain Contingencies [Line Items]      
Loss contingency, number of patents found not infringed 3    
Eliquis [Member] | Pfizer and BMS Versus Several Generic Manufacturers [Member] | Patent Infringement [Member] | Pending Litigation [Member]      
Gain Contingencies [Line Items]      
Number of defendants | defendant   25  
Gain contingency, number of patents allegedly infringed upon   3  
Number of patents allegedly infringed upon, expired December 2019   1