v3.25.4
GOODWILL AND INTANGIBLE ASSETS - Schedule of Goodwill and Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Goodwill      
Cost $ 388.5 $ 395.9  
Accumulated 
Amortization 
and Impairment 55.4 55.4  
Carrying Amount 333.1 340.5 $ 321.7
Finite-Lived Intangible Assets [Line Items]      
Cost 1,119.9 1,119.2  
Accumulated 
Amortization 
and Impairment 853.7 811.2  
Finite-lived intangible assets, net, total 266.2 308.0  
Cost 388.5 395.9  
Accumulated 
Amortization 
and Impairment 55.4 55.4  
Goodwill 333.1 340.5 $ 321.7
Intellectual property      
Finite-Lived Intangible Assets [Line Items]      
Cost 112.0 112.0  
Accumulated 
Amortization 
and Impairment 111.5 111.4  
Finite-lived intangible assets, net, total 0.5 0.6  
Other intangible assets      
Finite-Lived Intangible Assets [Line Items]      
Cost 693.9 693.9  
Accumulated 
Amortization 
and Impairment 443.3 403.6  
Finite-lived intangible assets, net, total 250.6 290.3  
Computer software assets      
Finite-Lived Intangible Assets [Line Items]      
Cost 314.0 313.3  
Accumulated 
Amortization 
and Impairment 298.9 296.2  
Finite-lived intangible assets, net, total $ 15.1 $ 17.1