Property, Plant and Equipment - Property, Plant and Equipment (Detail) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 815.2	$ 817.9
Less accumulated depreciation		459.8	459.1
Net	[1]	355.4	358.8
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		14.4	15.0
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		69.3	70.5
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 731.5	$ 732.4

[1] Net Property, plant, and equipment excludes $54.8 million and $56.6 million of discontinued operations assets held for sale related to our KJCC business at March 31, 2020 and December 31, 2019, respectively.