v3.25.0.1
Other Intangible Assets and Goodwill - Additional Information (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about intangible assets [line items]      
Growth rate used to extrapolate cash flow projections (as a percent) 1.50%    
Other intangible assets € 790.4 € 804.1  
Impairment loss for a reduction of future cash flows (as a percent) 10.00%    
Weighted average cost of capital (as a percent) 10.00%    
Increase (decrease) in intangible assets € (13.7)    
Upfront payment, acquisition of intangible asset 87.7 0.0  
Cumulative depreciation and impairment charges      
Disclosure of detailed information about intangible assets [line items]      
Other intangible assets (254.0) (116.9) € (76.9)
Impairment loss recognised in profit or loss, intangible assets and goodwill 83.3 0.0  
Gross carrying amount      
Disclosure of detailed information about intangible assets [line items]      
Other intangible assets 1,044.4 921.0 235.4
Additions 115.2 505.0  
Miscellaneous      
Disclosure of detailed information about intangible assets [line items]      
Impairment loss recognised in profit or loss, intangible assets and goodwill (26.4)    
Miscellaneous | Gross carrying amount      
Disclosure of detailed information about intangible assets [line items]      
Additions 9.4 443.5  
In-process R&D      
Disclosure of detailed information about intangible assets [line items]      
Other intangible assets 485.5 443.5  
In-process R&D | Cumulative depreciation and impairment charges      
Disclosure of detailed information about intangible assets [line items]      
Other intangible assets (55.1) 0.0 0.0
Impairment loss recognised in profit or loss, intangible assets and goodwill 55.1    
In-process R&D | Gross carrying amount      
Disclosure of detailed information about intangible assets [line items]      
Other intangible assets 540.6 € 443.5 € 0.0
Additions € 97.1