v3.26.1
Income Tax - Additional Information (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Corporate tax rate (as a percent) 15.00%    
Solidarity surcharge rate (as a percent) 5.50%    
Statutory tax rate (as a percent)   27.60% 27.10%
State income tax with average rate (as a percent) (8.10%) 1.80% 21.60%
Deferred tax assets € 13.5 € 81.7  
Deferred tax (assets) and liabilities, net recognized (70.8) 39.3 € 41.6
Deferred tax liabilities have not been recognized 34.3 14.5  
Deductible Temporary Differences, Unused Tax Losses, And Unused Tax Credits      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax assets € 2,028.8    
United States      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Federal corporate income tax (as a percent) 21.00%    
Valuation adjustment      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred tax (assets) and liabilities, net recognized € 609.0 € 332.4 € 138.0