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ACCOUNTING POLICIES (Details 1) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Accounting Policies [Abstract]      
Revenue Recognition, Cost-to-Cost Method $ 104.8 $ 57.8 $ 22.8
Contract with Customer, Liability 34.8 43.4  
Contract with Customer, Asset, after Allowance for Credit Loss 20.1 16.2  
Property, Plant and Equipment [Line Items]      
Gain on disposition of property, plant and equipment   (13.0) (1.4)
Gain on disposition of property, plant and equipment   (13.0) $ (1.4)
Asset retirement obligation non-current portion 63.3 52.6  
Asset retirement obligation revision of estimate 8.2 1.0  
Long-term Debt, Fair Value 2,626.2 $ 2,517.7  
Non-recurring Fair Value, Assets $ 0.0    
Average remaining life expectancy of the inactive participants in the defined benefit pension plan (in years) 17 years 17 years 17 years
Short-term investments $ 0.0 $ 0.0  
Sale of domestic private trucking fleet and operations [Member]      
Property, Plant and Equipment [Line Items]      
Gain on disposition of property, plant and equipment (27.0)    
Gain on disposition of property, plant and equipment (27.0)    
Insurance recoveries associated with business interruption [Member]      
Property, Plant and Equipment [Line Items]      
Gain on disposition of property, plant and equipment (15.6)    
Gain on disposition of property, plant and equipment $ (15.6)