v3.25.2
Financial Instruments - Interest bearing loans and borrowings (Details)
€ in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
EUR (€)
Jun. 30, 2025
USD ($)
Dec. 31, 2024
EUR (€)
Jun. 30, 2024
EUR (€)
Jun. 30, 2025
EUR (€)
Jun. 30, 2024
EUR (€)
Jun. 30, 2025
USD ($)
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Borrowing costs capitalised       € 1.8      
Net gain on refinancing € 0.0   € 4.1 € 10.3 € 0.0 € 14.4  
Senior USD Debt              
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Notional amount € 582.1       € 582.1   $ 686.1
Interest rate 2.50%       2.50%   2.50%
Repayments of non-current borrowings € 5.9 $ 6.9          
Repayments Of Non-current Borrowings - percentage of original issued notional 1.00%       1.00%   1.00%
Senior EURO Debt              
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Notional amount € 553.2       € 553.2    
Senior Eur Debt              
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Notional amount € 130.0       € 130.0    
Interest rate 2.75%       2.75%   2.75%
Loans and Borrowings              
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Fair value € 2,049.7   2,121.8   € 2,049.7    
Carrying value 2,011.4   2,083.3   2,011.4    
Loans and Borrowings | Deferred borrowing costs              
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Fair value 0.0   0.0   0.0    
Carrying value (29.1)   (32.6)   (29.1)    
Loans and Borrowings | Senior EUR/USD loans              
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Carrying value 1,240.3   1,315.7   1,240.3    
Loans and Borrowings | Senior EUR/USD loans | Level 2              
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Fair value 1,267.0   1,353.6   1,267.0    
Loans and Borrowings | Other borrowings [Domain]              
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Fair value 0.2   0.2   0.2    
Carrying value 0.2   0.2   0.2    
Loans and Borrowings | Twenty Twenty-Eight Fixed Rate Senior Secured Notes              
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Carrying value 800.0   800.0   800.0    
Loans and Borrowings | Twenty Twenty-Eight Fixed Rate Senior Secured Notes | Level 1              
Disclosure Of Financial Assets And Liabilities [Table] [Line Items]              
Fair value € 782.5   € 768.0   € 782.5