PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Property, plant and equipment.
Gross property, plant and equipment	$ 791.0	$ 764.9
Less: Accumulated depreciation	(378.4)	(358.3)
Net property, plant and equipment	412.6	406.6
Property
Property, plant and equipment.
Gross property, plant and equipment	53.0	43.6
Plant
Property, plant and equipment.
Gross property, plant and equipment	281.0	250.1
Equipment
Property, plant and equipment.
Gross property, plant and equipment	396.7	390.2
Leasehold Improvements
Property, plant and equipment.
Gross property, plant and equipment	49.6	49.9
Construction in Progress
Property, plant and equipment.
Gross property, plant and equipment	$ 10.7	$ 31.1

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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