v3.25.4
Employee benefit plans - Pension plan assets and liabilities (Details) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Employee benefit plans    
Net defined benefit liability (asset) € 590,684 € 692,638
Non-current pension liabilities € 574,807 € 678,673
Interest rate 4.85% 4.39%
United States, France and Germany    
Employee benefit plans    
Net defined benefit liability (asset) € 554,730 € 657,239
Current pension liabilities 15,096 12,876
Non-current pension liabilities 539,634 644,363
United States    
Employee benefit plans    
Net defined benefit liability (asset) € 40,650 83,148
Beneficiary percentage 62.00%  
Germany    
Employee benefit plans    
Net defined benefit liability (asset) € 498,282 € 557,185
Interest rate 4.50% 3.70%
Beneficiary percentage 29.00%  
France    
Employee benefit plans    
Net defined benefit liability (asset) € 15,798 € 16,906
Beneficiary percentage 9.00%  
Countries other than US, France, and Germany    
Employee benefit plans    
Net defined benefit liability (asset) € 35,954 35,399
Pension assets (1,143) (531)
Current pension liabilities 1,924 1,620
Non-current pension liabilities € 35,173 € 34,310