v3.26.1
Long-term debt - current and non-current - Additional Information (Detail)
€ in Millions, $ in Millions
3 Months Ended 6 Months Ended
Feb. 16, 2026
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2026
EUR (€)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
EUR (€)
Feb. 16, 2026
EUR (€)
Dec. 31, 2025
USD ($)
Line of Credit Facility [Line Items]                  
Unamortized issuance costs   $ 9.2   $ 9.2         $ 14.0
Interest expense on loans & borrowings (including the effect of hedging)   34.3 $ 28.0 68.8   $ 56.0      
Amortization of issuance costs and debt extinguishment costs   0.4 $ 1.1 7.8   $ 2.1      
Principal amount $ 1,339.5             € 1,100.0  
Quarterly installment payments $ 3.3                
Debt Outstanding       $ 1,336.2 € 1,100.0        
Description of Continuing Lenders Whose Modified Terms       For continuing lenders whose modified terms did not result in a change in the present value of future cash flows exceeding 10%, the refinancing was accounted for as a debt modification, with third-party fees expensed. For continuing lenders whose modified terms did not result in a change in the present value of future cash flows exceeding 10%, the refinancing was accounted for as a debt modification, with third-party fees expensed.        
Unamortized debt issuance costs   3.0   $ 3.0          
Amortized deferred financing costs   8.2   8.2          
Financing cost   3.3   3.3          
Long-term line of credit   225.0   $ 225.0     € 250.0    
Line of credit facility, commitment fee percentage       30.00% 30.00%        
Minimum [Member]                  
Line of Credit Facility [Line Items]                  
Applicable margin 2.00%                
Amortization of debt issuance cost percentage 2.06%             2.06%  
Maximum [Member]                  
Line of Credit Facility [Line Items]                  
Applicable margin 2.50%                
Amortization of debt issuance cost percentage 2.56%             2.56%  
Revolving Credit Facility [Member]                  
Line of Credit Facility [Line Items]                  
Line of credit facility, interest rate during period       0.50% 0.50%        
Percentage of credit facility floor rate       1.75% 1.75%        
Long-term line of credit   140.0   $ 140.0     210.0    
Line of credit maturity amount | €             210.0    
Revolving Credit Facility [Member] | Minimum [Member]                  
Line of Credit Facility [Line Items]                  
Long-term line of credit   225.0   225.0          
Revolving Credit Facility [Member] | Maximum [Member]                  
Line of Credit Facility [Line Items]                  
Long-term line of credit | €             300.0    
Ancillary Facility Landesbank [Member]                  
Line of Credit Facility [Line Items]                  
Long-term line of credit   45.0   45.0     50.0    
Line of credit maturity amount | €             50.0    
Ancillary Facility Erste Group Bank [Member]                  
Line of Credit Facility [Line Items]                  
Long-term line of credit   $ 40.0   $ 40.0     40.0    
Line of credit maturity amount | €             40.0    
Guarantee Facility [Member]                  
Line of Credit Facility [Line Items]                  
Line of credit maturity amount | €             € 250.0