v3.26.1
Share capital - Free Share Plans (Details)
12 Months Ended
Jun. 25, 2025
EUR (€)
shares
Jun. 22, 2024
Jun. 27, 2023
shares
Mar. 11, 2022
Dec. 31, 2025
EUR (€)
shares
Dec. 31, 2024
EUR (€)
shares
Dec. 31, 2023
EUR (€)
Disclosure of terms and conditions of share-based payment arrangement [line items]              
Number of shares issued (in shares)         0    
Capital increase | €         € 1,662,000 € 0 € 61,641,000
AGA 2023 - P1              
Disclosure of terms and conditions of share-based payment arrangement [line items]              
Number of shares issued (in shares)     427,110   0 0  
AGA 2023 - P2              
Disclosure of terms and conditions of share-based payment arrangement [line items]              
Number of shares issued (in shares)     439,210   0 0  
AGA 2023              
Disclosure of terms and conditions of share-based payment arrangement [line items]              
Vesting requirements for share-based payment arrangement, holding period       1 year      
Vesting requirements for share-based payment arrangement, acquisition period 2 years     2 years      
Number of shares issued (in shares) 809,820            
Capital increase | € € 24,294.6            
AGA              
Disclosure of terms and conditions of share-based payment arrangement [line items]              
Maximum term of options granted for share-based payment arrangement in the event of death or disability of optionee   6 months          
Number of shares issued (in shares)         0 0