v3.26.3
Employee benefit plans (Details) - EUR (€)
€ in Thousands
1 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2026
Dec. 31, 2025
Employee benefit plans      
Increase (decrease) in pension liability   € (67,589)  
Pension liabilities € 507,218 € 507,218 € 574,807
United States      
Employee benefit plans      
One-time lump-sum total cash payment offered to certain eligible participants in anticipation of final buy-out € 35,309