PROPERTY, PLANT AND EQUIPMENT (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Property, plant and equipment.    
Gross property, plant and equipment $ 1,112.0 $ 1,163.3
Less: Accumulated depreciation (464.1) (473.0)
Net property, plant and equipment 647.9 690.3
Property    
Property, plant and equipment.    
Gross property, plant and equipment 94.2 104.3
Plant    
Property, plant and equipment.    
Gross property, plant and equipment 336.7 359.5
Equipment    
Property, plant and equipment.    
Gross property, plant and equipment $ 681.1 $ 699.5