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Share-based payments - Disclosure of assumptions used for the measurement of AGAs (Details) - € / shares
Nov. 13, 2025
Aug. 01, 2025
May 30, 2025
Mar. 20, 2025
Feb. 06, 2025
Sep. 05, 2024
Jul. 11, 2024
May 23, 2024
Mar. 28, 2024
Jan. 02, 2024
Dec. 01, 2023
Sep. 28, 2023
Jul. 11, 2023
AGA-2023-1 | Tranches 1-4                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)                         € 15.98
FAIR VALUE OF THE AGA (in euro per share)                         15.98
AGA PRICE (in euro per share)                         0.00
AGA-2023-1 | Tranche 5                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)                         15.98
FAIR VALUE OF THE AGA (in euro per share)                         3.62
AGA PRICE (in euro per share)                         € 0.00
VOLATILITY                         67.20%
RISK FREE RATE                         3.20%
AGA-2023-1 | Tranche 6                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)                         € 15.98
FAIR VALUE OF THE AGA (in euro per share)                         0.74
AGA PRICE (in euro per share)                         € 0.00
VOLATILITY                         67.20%
RISK FREE RATE                         3.20%
AGA-2023-2 | Tranche 1                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)                         € 15.98
FAIR VALUE OF THE AGA (in euro per share)                         15.98
AGA PRICE (in euro per share)                         0.00
AGA-2023-2 | Tranche 2                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)                         15.98
FAIR VALUE OF THE AGA (in euro per share)                         9.59
AGA PRICE (in euro per share)                         € 0.00
AGA-2023-3                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)                       € 14.92  
FAIR VALUE OF THE AGA (in euro per share)                       14.92  
AGA PRICE (in euro per share)                       0.00  
AGA-2023-4                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)                       14.92  
FAIR VALUE OF THE AGA (in euro per share)                       14.92  
AGA PRICE (in euro per share)                       € 0.00  
AGA-2023-5                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)                     € 9.16    
FAIR VALUE OF THE AGA (in euro per share)                     9.16    
AGA PRICE (in euro per share)                     € 0.00    
AGA-2024-1                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)                   € 12.26      
FAIR VALUE OF THE AGA (in euro per share)                   12.26      
AGA PRICE (in euro per share)                   € 0.00      
AGA-2024-2                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)                 € 13.40        
FAIR VALUE OF THE AGA (in euro per share)                 13.40        
AGA PRICE (in euro per share)                 € 0.00        
AGA-2024-3                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)               € 12.76          
FAIR VALUE OF THE AGA (in euro per share)               12.76          
AGA PRICE (in euro per share)               € 0.00          
AGA-2024-4                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)             € 12.54            
FAIR VALUE OF THE AGA (in euro per share)             12.54            
AGA PRICE (in euro per share)             0.00            
AGA-2024-5                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)             12.54            
FAIR VALUE OF THE AGA (in euro per share)             12.54            
AGA PRICE (in euro per share)             0.00            
AGA-2024-6                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)             12.54            
FAIR VALUE OF THE AGA (in euro per share)             12.54            
AGA PRICE (in euro per share)             € 0.00            
AGA-2024-7                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)           € 10.80              
FAIR VALUE OF THE AGA (in euro per share)           10.80              
AGA PRICE (in euro per share)           € 0.00              
AGA-2025-1                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)         € 5.82                
FAIR VALUE OF THE AGA (in euro per share)         5.82                
AGA PRICE (in euro per share)         0.00                
AGA-2025-2                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)         5.82                
FAIR VALUE OF THE AGA (in euro per share)         5.82                
AGA PRICE (in euro per share)         0.00                
AGA-2025-3                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)         5.82                
FAIR VALUE OF THE AGA (in euro per share)         5.82                
AGA PRICE (in euro per share)         0.00                
AGA-2025-4                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)         5.82                
FAIR VALUE OF THE AGA (in euro per share)         5.82                
AGA PRICE (in euro per share)         € 0.00                
AGA-2025-5                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)       € 6.17                  
FAIR VALUE OF THE AGA (in euro per share)       6.17                  
AGA PRICE (in euro per share)       € 0.00                  
AGA-2025-6                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)     € 5.17                    
FAIR VALUE OF THE AGA (in euro per share)     5.17                    
AGA PRICE (in euro per share)     € 0.00                    
AGA-2025-7                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share)   € 61.20                      
FAIR VALUE OF THE AGA (in euro per share)   61.20                      
AGA PRICE (in euro per share)   € 0.00                      
AGA-2025-8                          
Disclosure of terms and conditions of share-based payment arrangement [line items]                          
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share) € 89.40                        
FAIR VALUE OF THE AGA (in euro per share) 89.40                        
AGA PRICE (in euro per share) € 0.00