v3.26.1
Cover - shares
 12 Months Ended
Dec. 31, 2025
Mar. 27, 2026
Entity Listings [Line Items]    
Document Type 20-F/A  
Document Registration Statement false  
Document Annual Report true  
Document Period End Date Dec. 31, 2025  
Current Fiscal Year End Date --12-31  
Document Transition Report false  
Document Shell Company Report false  
Entity File Number 001-39081  
Entity Registrant Name BioNTech SE  
Entity Incorporation, State or Country Code 2M  
Entity Address, Address Line One An der Goldgrube 12  
Entity Address, Postal Zip Code D-55131  
Entity Address, City or Town Mainz  
Entity Address, Country DE  
Entity Common Stock, Shares Outstanding   251,204,366
Entity Well-known Seasoned Issuer Yes  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Emerging Growth Company false  
ICFR Auditor Attestation Flag true  
Document Financial Statement Error Correction false  
Document Accounting Standard International Financial Reporting Standards  
Entity Shell Company false  
Amendment Flag false  
Document Fiscal Period Focus FY  
Document Fiscal Year Focus 2025  
Entity Central Index Key 0001776985  
Auditor Firm ID 1251  
American Depositary Shares, each Representing one ordinary share    
Entity Listings [Line Items]    
Title of 12(b) Security American Depositary Shares, each Representing one ordinary share  
Trading Symbol BNTX  
Security Exchange Name NASDAQ  
Ordinary shares, no par value, with a notional amount attributable to each ordinary share of €1    
Entity Listings [Line Items]    
Title of 12(b) Security Ordinary shares, no par value, with a notional amount attributable to each ordinary share of €1*  
Security Exchange Name NASDAQ  
No Trading Symbol Flag true  
Business Contact    
Entity Listings [Line Items]    
Entity Address, Address Line One An der Goldgrube 12  
Entity Address, Postal Zip Code D-55131  
Entity Address, City or Town Mainz  
Entity Address, Country DE  
Contact Personnel Name Prof. Ugur Sahin, M.D.  
City Area Code +49  
Local Phone Number 6131-9084-0  
Contact Personnel Fax Number +49 6131 9084-390  
Contact Personnel Email Address info@biontech.de