v3.26.1
Share based payments - Valuation (Details) - EUR (€)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Discontinued Operations [Member]      
Subscription rights plans      
Share based compensation expense € 0 € 2,201,000 € 20,090,000
Subscription rights      
Subscription rights plans      
Share based compensation expense 23,999,000 19,886,000 56,718,000
Share-based compensation expenses for continuing operations. € 23,999,000 € 17,685,000 € 36,628,000
2024 BE (Belgian plan) Granted on May 16      
Subscription rights plans      
Exercise Price € 26.9    
Weighted average share price at acceptance date 23.8    
Weighted average fair value at acceptance date € 9.78    
Weighted average estimated volatility 42.19%    
Weighted average expected life of the subscription rights (years) 6 years 2 months 19 days    
Weighted average risk free rate (%) 2.56%    
2024 BE/ROW Granted in October 1      
Subscription rights plans      
Exercise Price € 25.88    
Weighted average share price at acceptance date 26    
Weighted average fair value at acceptance date € 10.57    
Weighted average estimated volatility 41.73%    
Weighted average expected life of the subscription rights (years) 5 years 3 months 10 days    
Weighted average risk free rate (%) 2.17%    
2024 RMV / ROW allocated in May      
Subscription rights plans      
Exercise Price € 26.9    
Weighted average share price at acceptance date 23.8    
Weighted average fair value at acceptance date € 9.11    
Weighted average estimated volatility 42.19%    
Weighted average expected life of the subscription rights (years) 5 years 5 months 8 days    
Weighted average risk free rate (%) 2.58%    
2023 BE allocated in May 5 & June 15      
Subscription rights plans      
Exercise Price € 35.97    
Weighted average share price at acceptance date 38.53    
Weighted average fair value at acceptance date € 16.61    
Weighted average estimated volatility 36.89%    
Weighted average expected life of the subscription rights (years) 6 years 1 month 20 days    
Weighted average risk free rate (%) 2.77%    
2023 RMV/ROW May 5 & November 17      
Subscription rights plans      
Exercise Price € 35.05    
Weighted average share price at acceptance date 38.63    
Weighted average fair value at acceptance date € 15.96    
Weighted average estimated volatility 36.67%    
Weighted average expected life of the subscription rights (years) 5 years 4 months 17 days    
Weighted average risk free rate (%) 2.74%    
2025 (A) allocated in May 2025      
Subscription rights plans      
Exercise Price € 25.64    
Weighted average share price at acceptance date 25.46    
Weighted average fair value at acceptance date € 9.8    
Weighted average estimated volatility 38.79%    
Weighted average expected life of the subscription rights (years) 5 years 6 months    
Weighted average risk free rate (%) 2.03%    
2025 (B) allocated in August 2025      
Subscription rights plans      
Exercise Price € 28.16    
Weighted average share price at acceptance date 28.16    
Weighted average fair value at acceptance date € 10.98    
Weighted average estimated volatility 38.77%    
Weighted average expected life of the subscription rights (years) 5 years 6 months    
Weighted average risk free rate (%) 2.19%    
2025 (C) allocated in November 2025      
Subscription rights plans      
Exercise Price € 26.75    
Weighted average share price at acceptance date 27.04    
Weighted average fair value at acceptance date € 10.06    
Weighted average estimated volatility 35.98%    
Weighted average expected life of the subscription rights (years) 5 years 6 months    
Weighted average risk free rate (%) 2.21%