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Income and Expenses - Additional Information (Details) - EUR (€)
€ in Thousands
 12 Months Ended
May 06, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure Of Income And Expenses [Line Items]        
Research and development expenses   € 645,029 € 226,466 € 143,040
General and administrative expenses   94,049 45,547 26,334
Other operating income   250,539 2,724 5,396
Government grant   91,951    
Foreign exchange gains     2,341 6,050
Foreign exchange losses   42,609    
Expenses arising from fair value measurement adjustments of derivative embedded within convertible note   17,289    
Germany        
Disclosure Of Income And Expenses [Line Items]        
Government grant   88,000    
Grant by Bundesministerium fuer Bildung und Forschung (BMBF)        
Disclosure Of Income And Expenses [Line Items]        
Other operating income   239,017 1,547 € 4,228
Grant by Bundesministerium fuer Bildung und Forschung (BMBF) | Germany        
Disclosure Of Income And Expenses [Line Items]        
Other operating income   € 238,900    
General And Administrative Expenses        
Disclosure Of Income And Expenses [Line Items]        
Charge in connection with certain withholding tax payments for intellectual property licenses     € 2,600  
BioNTech US Inc.        
Disclosure Of Income And Expenses [Line Items]        
Research and development expenses € 21,000      
General and administrative expenses € 7,400