v3.26.1
Revenues from Contracts with Customers - Summary of Disaggregation of Revenues from Contracts with Customers (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 2,869.9 € 2,751.1 € 3,819.0
Percentage of entity's revenue 100.00% 100.00% 100.00%
United States      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 1,794.9 € 1,847.8 € 3,010.9
Percentage of entity's revenue 63.00% 67.00% 79.00%
Germany      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 759.1 € 706.9 € 482.7
Percentage of entity's revenue 26.00% 26.00% 13.00%
Ireland      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 304.8 € 177.8 € 203.8
Percentage of entity's revenue 11.00% 6.00% 5.00%
Rest of the World      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 11.1 € 18.6 € 121.6
Percentage of entity's revenue 0.00% 1.00% 3.00%
Pfizer Inc.      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 1,602.0 € 2,011.7 € 3,293.0
Percentage of entity's revenue 56.00% 73.00% 86.00%
German Federal Ministry of Health      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 627.5 € 701.0 € 473.6
Percentage of entity's revenue 22.00% 25.00% 12.00%
Bristol-Myers Squibb      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 613.0 € 0.0 € 0.0
Percentage of entity's revenue 21.00% 0.00% 0.00%
Other Customers      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 27.4 € 38.4 € 52.4
Percentage of entity's revenue 1.00% 2.00% 2.00%
COVID-19 vaccine revenues      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 1,995.3 € 2,432.1 € 3,776.2
Percentage of entity's revenue 70.00% 88.00% 99.00%
Revenues from out-licensing      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 613.0 € 0.0 € 0.0
Percentage of entity's revenue 21.00% 0.00% 0.00%
Revenues from out-licensing | Bristol-Myers Squibb      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 1,500.0    
Other revenues      
Disclosure of disaggregation of revenue from contracts with customers [line items]      
Revenues € 261.6 € 319.0 € 42.8
Percentage of entity's revenue 9.00% 12.00% 1.00%