v3.26.1
Critical accounting judgments and key sources of estimation uncertainty (Details)
12 Months Ended
Dec. 31, 2025
EUR (€)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
EUR (€)
Critical accounting estimates and judgments      
Impairment of the cell therapy business € 228,112,000    
OLCA [member]      
Critical accounting estimates and judgments      
Fixed Opt In Option Price | $   $ 150,000,000  
revenue released. 1,069,000,000    
Contract assets     € 7,000,000
Cell Therapy Business Associated Assets [member]      
Critical accounting estimates and judgments      
Impairment of the cell therapy business 228,100,000    
Contingent consideration [member] | Cell Point Acquisition      
Critical accounting estimates and judgments      
Contingent Consideration € 0   € 20,600,000