v3.26.1
Share-Based Payments - Reconciliation of North America Employee Participation Plan Shares (Details)
1 Months Ended 8 Months Ended 12 Months Ended
Nov. 13, 2025
May 14, 2025
Dec. 31, 2024
May 31, 2024
Dec. 31, 2024
Dec. 31, 2025
shares
BioNTech 2024 North America Employee Participation Plan - RSUs            
Share Options Outstanding [Abstract]            
Beginning balance (in shares)           379,588
Granted (in shares) 27,743 330,774 47,115 356,757    
Forfeited (in shares)         (24,284) (67,430)
Settled (in shares)           (91,828)
Ending balance (in shares)     379,588   379,588 578,847
BioNTech 2024 North America Employee Participation Plan - RSUs | Vested            
Share Options Outstanding [Abstract]            
Ending balance (in shares)           0
BioNTech 2024 North America Employee Participation Plan - RSUs | Unvested            
Share Options Outstanding [Abstract]            
Ending balance (in shares)           578,847
BioNTech 2024 North America Employee Participation Plan - PSUs            
Share Options Outstanding [Abstract]            
Beginning balance (in shares)           31,566
Granted (in shares) 32,160 34,481    
Forfeited (in shares)         (2,915) (5,465)
Settled (in shares)           (7,644)
Ending balance (in shares)     31,566   31,566 50,617
BioNTech 2024 North America Employee Participation Plan - PSUs | Vested            
Share Options Outstanding [Abstract]            
Ending balance (in shares)           0
BioNTech 2024 North America Employee Participation Plan - PSUs | Unvested            
Share Options Outstanding [Abstract]            
Ending balance (in shares)           50,617