v3.26.1
Financial instruments included in the statement of financial position and impact on income - Disclosure of Effect of Changes in Exchange Rates (Details) - Currency risk - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about financial instruments [line items]    
Change in contract assets due to a 10% increase in exchange rate € 4,127 € 0
Change in contract assets due to a 10% decrease in exchange rate (4,127) 0
Change in cash and cash equivalents due to a 10% increase in exchange rate 3,237  
Change in cash and cash equivalents due to a 10% decrease in exchange rate (3,237)  
Change in contract liabilities due to a 10% increase in exchange rate   4,199
Change in contract liabilities due to a 10% decrease in exchange rate   (4,199)
Change in net income due to a 10% increase in exchange rate (11) 56
Change in net income due to a 10% decrease in exchange rate 11 (56)
Change in equity due to a 10% increase in exchange rate 20 35
Change in equity due to a 10% decrease in exchange rate (20) (35)
USD / Euro exchange rate    
Disclosure of detailed information about financial instruments [line items]    
Change in contract assets due to a 10% increase in exchange rate 4,127 0
Change in contract assets due to a 10% decrease in exchange rate (4,127) 0
Change in cash and cash equivalents due to a 10% increase in exchange rate 3,237  
Change in cash and cash equivalents due to a 10% decrease in exchange rate (3,237)  
Change in contract liabilities due to a 10% increase in exchange rate   4,199
Change in contract liabilities due to a 10% decrease in exchange rate   (4,199)
Change in net income due to a 10% increase in exchange rate (11) 56
Change in net income due to a 10% decrease in exchange rate 11 (56)
Change in equity due to a 10% increase in exchange rate 20 35
Change in equity due to a 10% decrease in exchange rate € (20) € (35)