v3.26.1
Financial Assets and Financial Liabilities - Summary of Financial Assets and Liabilities at Amortized Cost and at Fair Value (Details) - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Categories of financial assets [abstract]    
Current € 8,126.0 € 8,485.6
Non-current 2,554.2 1,254.0
Total 10,680.2 9,739.6
Categories of financial liabilities [abstract]    
Current 938.8 1,909.6
Non-current 310.1 261.6
Financial liabilities 1,248.9 2,171.2
Lease liabilities    
Categories of financial liabilities [abstract]    
Current 45.0 39.5
Non-current 185.3 214.7
Financial liabilities 230.3 254.2
Level 1    
Categories of financial assets [abstract]    
Total 82.2 92.7
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
Level 1 | Lease liabilities    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
Level 2    
Categories of financial assets [abstract]    
Total 206.2 11.9
Categories of financial liabilities [abstract]    
Financial liabilities 0.4 16.3
Level 2 | Lease liabilities    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
Level 3    
Categories of financial assets [abstract]    
Total 47.2 41.1
Categories of financial liabilities [abstract]    
Financial liabilities 120.6 47.8
Level 3 | Lease liabilities    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
FVTPL | Foreign exchange forward contracts    
Categories of financial liabilities [abstract]    
Current 0.4 16.3
Non-current 0.0 0.0
Financial liabilities 0.4 16.3
FVTPL | Contingent consideration    
Categories of financial liabilities [abstract]    
Current 43.4 0.9
Non-current 77.2 46.9
Financial liabilities 120.6 47.8
FVTPL | Level 1 | Foreign exchange forward contracts    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
FVTPL | Level 1 | Contingent consideration    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
FVTPL | Level 2 | Foreign exchange forward contracts    
Categories of financial liabilities [abstract]    
Financial liabilities 0.4 16.3
FVTPL | Level 2 | Contingent consideration    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
FVTPL | Level 3 | Foreign exchange forward contracts    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
FVTPL | Level 3 | Contingent consideration    
Categories of financial liabilities [abstract]    
Financial liabilities 120.6 47.8
AC | Loans and borrowings    
Categories of financial liabilities [abstract]    
Current 7.2  
Non-current 29.9  
Financial liabilities 37.1  
AC | Trade payables and other payables    
Categories of financial liabilities [abstract]    
Current 534.9 426.7
Non-current 0.0 0.0
Financial liabilities 534.9 426.7
AC | Other financial liabilities    
Categories of financial liabilities [abstract]    
Current 307.9 1,426.2
Non-current 17.7 0.0
Financial liabilities 325.6 1,426.2
AC | Level 1 | Loans and borrowings    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0  
AC | Level 1 | Trade payables and other payables    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
AC | Level 1 | Other financial liabilities    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
AC | Level 2 | Loans and borrowings    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0  
AC | Level 2 | Trade payables and other payables    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
AC | Level 2 | Other financial liabilities    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
AC | Level 3 | Loans and borrowings    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0  
AC | Level 3 | Trade payables and other payables    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
AC | Level 3 | Other financial liabilities    
Categories of financial liabilities [abstract]    
Financial liabilities 0.0 0.0
Foreign exchange forward contracts | FVTPL    
Categories of financial assets [abstract]    
Current 6.3 11.9
Non-current 0.0 0.0
Total 6.3 11.9
Foreign exchange forward contracts | FVTPL | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Foreign exchange forward contracts | FVTPL | Level 2    
Categories of financial assets [abstract]    
Total 6.3 11.9
Foreign exchange forward contracts | FVTPL | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Other Funds | FVTPL    
Categories of financial assets [abstract]    
Current 199.9  
Non-current 0.0  
Total 199.9  
Other Funds | FVTPL | Level 1    
Categories of financial assets [abstract]    
Total 0.0  
Other Funds | FVTPL | Level 2    
Categories of financial assets [abstract]    
Total 199.9  
Other Funds | FVTPL | Level 3    
Categories of financial assets [abstract]    
Total 0.0  
Bank Deposits | AC    
Categories of financial assets [abstract]    
Current 3,358.5 1,643.0
Non-current 100.0 0.0
Total 3,458.5 1,643.0
Bank Deposits | AC | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Bank Deposits | AC | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Bank Deposits | AC | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Commercial Paper | AC    
Categories of financial assets [abstract]    
Current 570.2 918.3
Non-current 0.0 0.0
Total 570.2 918.3
Commercial Paper | AC | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Commercial Paper | AC | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Commercial Paper | AC | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Bonds | AC    
Categories of financial assets [abstract]    
Current 2,135.7 3,521.1
Non-current 2,301.7 1,061.1
Total 4,437.4 4,582.2
Bonds | AC | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Bonds | AC | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Bonds | AC | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Repos | AC    
Categories of financial assets [abstract]    
Current 894.2 453.8
Non-current 0.0 0.0
Total 894.2 453.8
Repos | AC | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Repos | AC | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Repos | AC | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Non-listed equity investments | FVTOCI    
Categories of financial assets [abstract]    
Current 0.0 0.0
Non-current 0.6 1.5
Total 0.6 1.5
Non-listed equity investments | FVTOCI | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Non-listed equity investments | FVTOCI | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Non-listed equity investments | FVTOCI | Level 3    
Categories of financial assets [abstract]    
Total 0.6 1.5
Listed equity investments | FVTOCI    
Categories of financial assets [abstract]    
Current 0.0 0.0
Non-current 82.2 92.7
Total 82.2 92.7
Listed equity investments | FVTOCI | Level 1    
Categories of financial assets [abstract]    
Total 82.2 92.7
Listed equity investments | FVTOCI | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Listed equity investments | FVTOCI | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Trade and other receivables | AC    
Categories of financial assets [abstract]    
Current 924.2 1,463.9
Non-current 0.0 0.0
Total 924.2 1,463.9
Trade and other receivables | AC | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Trade and other receivables | AC | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Trade and other receivables | AC | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Cash at banks and on hand | AC    
Categories of financial assets [abstract]    
Current 36.2 473.6
Non-current 0.0 40.9
Total 36.2 514.5
Cash at banks and on hand | AC | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Cash at banks and on hand | AC | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Cash at banks and on hand | AC | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Other financial assets | FVTPL    
Categories of financial assets [abstract]    
Current 0.0 0.0
Non-current 46.6 39.6
Total 46.6 39.6
Other financial assets | FVTPL | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Other financial assets | FVTPL | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Other financial assets | FVTPL | Level 3    
Categories of financial assets [abstract]    
Total 46.6 39.6
Other financial assets | AC    
Categories of financial assets [abstract]    
Current 0.8 0.0
Non-current 23.1 18.2
Total 23.9 18.2
Other financial assets | AC | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Other financial assets | AC | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Other financial assets | AC | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Cash at banks and on hand | AC    
Categories of financial assets [abstract]    
Current 827.2 450.0
Non-current 0.0 0.0
Total 827.2 450.0
Cash at banks and on hand | AC | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Cash at banks and on hand | AC | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Cash at banks and on hand | AC | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Money market funds | FVTPL    
Categories of financial assets [abstract]    
Current 5,063.3 6,947.5
Non-current 0.0 0.0
Total 5,063.3 6,947.5
Money market funds | FVTPL | Level 1    
Categories of financial assets [abstract]    
Total 5,063.3 6,947.5
Money market funds | FVTPL | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Money market funds | FVTPL | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Deposits, Commercial Paper, Repos | AC    
Categories of financial assets [abstract]    
Current 1,784.9 2,364.4
Non-current 0.0 0.0
Total 1,784.9 2,364.4
Deposits, Commercial Paper, Repos | AC | Level 1    
Categories of financial assets [abstract]    
Total 0.0 0.0
Deposits, Commercial Paper, Repos | AC | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Deposits, Commercial Paper, Repos | AC | Level 3    
Categories of financial assets [abstract]    
Total 0.0 0.0
Cash and cash equivalents    
Categories of financial assets [abstract]    
Current 7,675.4 9,761.9
Non-current 0.0 0.0
Total 7,675.4 9,761.9
Cash and cash equivalents | Level 1    
Categories of financial assets [abstract]    
Total 5,063.3 6,947.5
Cash and cash equivalents | Level 2    
Categories of financial assets [abstract]    
Total 0.0 0.0
Cash and cash equivalents | Level 3    
Categories of financial assets [abstract]    
Total € 0.0 € 0.0