v3.26.1
Other Intangible Assets and Goodwill - Goodwill (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Beginning balance € 790.4  
Impairment   € 85.4
Ending balance 1,606.0 790.4
Goodwill    
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Beginning balance 380.6  
Ending balance 367.9 380.6
Gross carrying amount    
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Beginning balance 1,044.4 921.0
Currency differences (21.8) 11.1
Additions from business combinations 413.1  
Ending balance 2,009.4 1,044.4
Gross carrying amount | Goodwill    
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Beginning balance 380.6 362.5
Currency differences (22.8) 18.1
Additions from business combinations 10.6  
Ending balance 368.4 380.6
Cumulative depreciation and impairment charges    
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Beginning balance (254.0) (116.9)
Currency differences (6.2) 1.8
Impairment 88.5 83.3
Ending balance (403.4) (254.0)
Cumulative depreciation and impairment charges | Goodwill    
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]    
Beginning balance 0.0 0.0
Impairment 0.5 0.0
Ending balance € (0.5) € 0.0