v3.25.1
Related parties - Summary of remuneration package (Details)
 12 Months Ended
Oct. 01, 2024
shares
May 16, 2024
shares
Dec. 31, 2024
EUR (€)
EquityInstruments
shares
employee
Dec. 31, 2023
EUR (€)
shares
EquityInstruments
Dec. 31, 2022
EUR (€)
EquityInstruments
shares
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]          
Number of board of directors | employee     9    
Subscription rights offered 41,000 1,340,000 1,381,000 1,538,400 3,127,239
Restricted Stock Units (RSUs)          
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]          
Subscription rights offered | EquityInstruments     840,088 920,510 470,273
Key management personnel of entity or parent          
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]          
Short-term benefits     € 3,279,000 € 3,902,000 € 3,444,000
Board fees and other short-term benefits for members of the Board of Directors     859,000 749,000 740,000
Post-employment benefits     186,000 209,000 240,000
Severance package       3,150,000  
Key management personnel of entity or parent | Warrants          
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]          
Total cost of subscription rights granted in the year     € 1,765,000 € 5,163,000 € 27,010,000
Key management personnel of entity or parent | Restricted Stock Units (RSUs)          
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]          
Number of RSUs granted in the year to Executive Committee members as a group | shares     299,516 331,066 200,478
Executive committee members as a group | Warrants          
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]          
Subscription rights offered | shares     185,000 325,000 1,124,000
Piet Wigerinck and Onno Van De Stolpe [member]          
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [line items]          
Severance package         € 689,000