v3.26.1
Share-based payment - Summary of RSUs and SEBIRs outstanding and exercise prices (Details) - SEBIRs/RSU
shares in Thousands
12 Months Ended
Dec. 31, 2025
shares
€ / shares
Dec. 31, 2024
shares
Dec. 31, 2023
shares
Share-based payment      
Number of other equity instruments outstanding in share-based payment arrangement 4,347 4,347 4,579
September 22, 2029      
Share-based payment      
Exercise price, share options granted | € / shares € 3.77    
Number of other equity instruments outstanding in share-based payment arrangement 2,314 2,314  
September 22, 2029      
Share-based payment      
Exercise price, share options granted | € / shares € 3.77    
Number of other equity instruments outstanding in share-based payment arrangement 369 369  
September 22, 2031      
Share-based payment      
Exercise price, share options granted | € / shares € 7.7    
Number of other equity instruments outstanding in share-based payment arrangement 1,604 1,604  
March 23, 2033      
Share-based payment      
Number of other equity instruments outstanding in share-based payment arrangement 60 60