PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Property, plant and equipment.
Gross property, plant and equipment	$ 640.7	$ 636.8
Less: Accumulated depreciation	(338.0)	(332.2)
Net property, plant and equipment	302.7	304.6
Property
Property, plant and equipment.
Gross property, plant and equipment	39.2	36.4
Plant
Property, plant and equipment.
Gross property, plant and equipment	147.4	144.3
Equipment
Property, plant and equipment.
Gross property, plant and equipment	$ 454.1	$ 456.1