v3.26.1
Financial Assets and Financial Liabilities - Summary of Significant Unobservable Inputs (Level 3) Used for Recurring Fair Value Measurements and the Effect of the Measurements (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Assets [Roll Forward]    
Beginning balance € 9,739.6  
Ending balance 10,680.2 € 9,739.6
Liabilities [Roll Forward]    
Beginning balance 2,171.2  
Ending balance 1,248.9 2,171.2
Level 3    
Assets [Roll Forward]    
Beginning balance 41.1  
Ending balance 47.2 41.1
Liabilities [Roll Forward]    
Beginning balance 47.8  
Ending balance 120.6 47.8
Level 3 | Other financial assets    
Assets [Roll Forward]    
Beginning balance 39.6 0.0
Additions 0.0 43.4
Gains (losses) recognised in profit or loss including exchange differences, fair value measurement, assets   (3.8)
Ending balance 46.6 39.6
Level 3 | Other financial assets | Finance Income (Expense)    
Assets [Roll Forward]    
Gains (losses) recognised in profit or loss including exchange differences, fair value measurement, assets (7.0)  
Level 3 | Other financial assets | Other Operating Income (Expense)    
Assets [Roll Forward]    
Gains (losses) recognised in profit or loss including exchange differences, fair value measurement, assets 0.0  
Level 3 | Contingent consideration    
Liabilities [Roll Forward]    
Beginning balance 47.8 38.8
Additions (79.6) 0.0
Net change in fair value   (9.0)
Ending balance 120.6 € 47.8
Level 3 | Contingent consideration | Finance Income (Expense)    
Liabilities [Roll Forward]    
Net change in fair value (4.9)  
Level 3 | Contingent consideration | Other Operating Income (Expense)    
Liabilities [Roll Forward]    
Net change in fair value € 11.7