v3.26.3
Long-term debt - current and non-current - Narrative (Details)
€ in Millions, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 05, 2026
Feb. 16, 2026
USD ($)
Jun. 30, 2026
USD ($)
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
EUR (€)
Jun. 30, 2026
EUR (€)
May 31, 2026
USD ($)
May 31, 2026
EUR (€)
Dec. 31, 2025
USD ($)
Line of Credit Facility [Line Items]                        
Unamortized issuance costs       $ 8.8   $ 8.8           $ 14.0
Interest expense on loans and borrowings       32.1 $ 26.8 101.0 $ 82.8          
Amortization of issuance costs and debt extinguishment costs       0.9 $ 1.0 8.7 $ 3.1          
Debt outstanding       2,611.3   2,611.3           $ 2,658.8
Debt issuance costs incurred       0.5   3.8            
Secured Debt                        
Line of Credit Facility [Line Items]                        
Unamortized issuance costs   $ 3.0 $ 3.3                  
Amortization of deferred financing costs   $ 8.2                    
Line of Credit | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Debt instrument, margin decrease 0.50%                      
Debt instrument, line of credit                 € 300.0 $ 225.0    
Term Loan B – EUR | Secured Debt                        
Line of Credit Facility [Line Items]                        
Debt instrument, nominal amount | €               € 1,100.0        
Interest rate, stated percentage   2.50%                    
Interest rate, effective percentage   2.56%                    
Debt instrument, margin decrease 0.50%                      
Debt outstanding | €               1,100.0        
Term Loan B – USD | Secured Debt                        
Line of Credit Facility [Line Items]                        
Debt instrument, nominal amount       1,339.5   1,339.5            
Interest rate, stated percentage   2.00%                    
Interest rate, effective percentage   2.06%                    
Debt instrument, periodic payment   $ 3.3                    
Debt instrument, margin decrease 0.50%                      
Floor interest rate 1.75%                      
Debt outstanding       $ 1,332.8   $ 1,332.8            
Guarantee Facility | Line of Credit | Secured Debt                        
Line of Credit Facility [Line Items]                        
Debt instrument, line of credit | €                 250.0   € 250.0  
Revolving Credit Facility (RCF) | Line of Credit | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Debt instrument, line of credit               210.0 210.0 140.0    
Line of credit, annual commitment fee percentage     30.00%                  
Ancillary Facility – HELABA | Line of Credit | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Debt instrument, line of credit               50.0 50.0 45.0    
Ancillary Facility – ERSTE Bank | Line of Credit | Revolving Credit Facility                        
Line of Credit Facility [Line Items]                        
Debt instrument, line of credit               € 40.0 € 40.0 $ 40.0