v3.25.4
PENSION AND NON-PENSION POST-EMPLOYMENT BENEFIT PLANS - Schedule of Increase (Decrease) our Benefit Obligations (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Discount rate, 1% point increase on benefit obligation $ (20.7)  
Discount rate, 1% point decrease on benefit obligation 25.1  
Healthcare cost trend rate, 1% point increase on benefit obligation 0.0  
Healthcare cost trend rate, 1% point decrease on benefit obligation $ 0.0  
Other Benefit Plans    
Defined Benefit Plan Disclosure [Line Items]    
Discount rate, 1% point increase on benefit obligation   $ (6.4)
Discount rate, 1% point decrease on benefit obligation   7.5
Healthcare cost trend rate, 1% point increase on benefit obligation   2.6
Healthcare cost trend rate, 1% point decrease on benefit obligation   $ (2.2)