v3.25.4
INCOME TAXES - Schedule of Effective Income Tax Rate Reconciliation (Details)
$ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
CAD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Amount        
Earnings before income taxes $ 983.2   $ 532.2 $ 306.0
Expected income tax expense calculated using expected statutory rate   $ 245.8 141.0 81.1
Provincial income taxes, net of federal income tax effect 0.0      
Effect of foreign tax rate differences     (73.9) (45.7)
Change in valuation allowance     21.2 25.2
Effect of foreign exchange     (10.7) 4.3
Effect of other, including non-taxable/non-deductible items and changes to net provisions related to tax uncertainties     26.6 (3.3)
Income tax expense $ 150.7   $ 104.2 $ 61.6
Percentage (%)        
Expected statutory rate 25.00% 25.00% 26.50% 26.50%
Provincial income taxes, net of federal income tax effect 0.00% 0.00%    
Income tax expense and effective tax rate 15.30% 15.30%    
Income tax expense, repatriation of foreign earnings and taxable temporary differences with expected undistributed foreign earnings       $ 11.3
CANADA        
Amount        
Other   $ (0.2)    
Change in valuation allowance   18.6    
Share-based and other performance-based compensation $ (24.9)      
Derivatives (15.5)      
Other non-taxable or non-deductible items $ (8.7)      
Change in unrecognized tax benefits   $ 46.5    
Percentage (%)        
Other 0.00% 0.00%    
Change in valuation allowance 1.90% 1.90%    
Share-based and other performance-based compensation (2.50%) (2.50%)    
Derivatives (1.60%) (1.60%)    
Other non-taxable or non-deductible items (0.90%) (0.90%)    
Change in unrecognized tax benefits 4.70% 4.70%    
Thailand        
Amount        
Effect of foreign tax rate differences $ (23.4)      
Tax incentives, other than credits (52.8)      
Withholding taxes 35.5      
Other $ (4.4)      
Percentage (%)        
Statutory tax rate difference (2.40%) (2.40%)    
Tax incentives, other than credits (5.40%) (5.40%)    
Withholding taxes 3.60% 3.60%    
Other (0.50%) (0.50%)    
U.S.        
Amount        
Effect of foreign tax rate differences $ (12.3)      
Other 2.6      
Change in valuation allowance (70.6)      
Share-based and other performance-based compensation (21.5)      
Derivatives $ 14.3      
Percentage (%)        
Statutory tax rate difference (1.30%) (1.30%)    
Other 0.30% 0.30%    
Change in valuation allowance (7.20%) (7.20%)    
Share-based and other performance-based compensation (2.20%) (2.20%)    
Derivatives 1.50% 1.50%    
Other foreign jurisdictions        
Amount        
Effect of foreign tax rate differences $ 21.7      
Percentage (%)        
Statutory tax rate difference 2.20% 2.20%    
Asia        
Percentage (%)        
Income tax expense, repatriation of foreign earnings $ 35.5   $ 22.3  
Income tax expense, repatriation of foreign earnings and taxable temporary differences with expected undistributed foreign earnings       $ 11.3