v3.26.1
Leases - Summary of Right-of-Use Assets within Consolidated Statements of Financial Position (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of quantitative information about right-of-use assets [line items]      
Right-of-use assets € 210.2 € 248.1 € 214.4
Additions to right-of-use assets 9.0 74.4  
Total depreciation and impairment charge (42.7) (45.6)  
Increase (decrease) through net exchange differences, right-of-use assets (11.6) 5.0  
Increase (decrease) through other changes, right-of-use assets (16.9) (0.1)  
Acquisitions through business combinations, right-of-use assets 38.8    
Impairment loss recognised in profit or loss, right-of-use assets (14.5)    
Land and buildings      
Disclosure of quantitative information about right-of-use assets [line items]      
Right-of-use assets 202.2 238.2 209.8
Additions to right-of-use assets 8.8 67.2  
Total depreciation and impairment charge (40.8) (42.2)  
Increase (decrease) through net exchange differences, right-of-use assets (10.0) 3.3  
Increase (decrease) through other changes, right-of-use assets (16.6) 0.1  
Acquisitions through business combinations, right-of-use assets 37.1    
Impairment loss recognised in profit or loss, right-of-use assets (14.5)    
Other Operating Equipment [Member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Right-of-use assets 8.0 9.9 € 4.6
Additions to right-of-use assets 0.2 7.2  
Total depreciation and impairment charge (1.9) (3.4)  
Increase (decrease) through net exchange differences, right-of-use assets (1.6) 1.7  
Increase (decrease) through other changes, right-of-use assets (0.3) € (0.2)  
Acquisitions through business combinations, right-of-use assets 1.7    
Impairment loss recognised in profit or loss, right-of-use assets € 0.0