Balance Sheet Accounts and Supplemental Disclosures - Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Nov. 30, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 963.0	$ 946.8
Less: accumulated depreciation		(604.0)	(580.8)
Property, plant and equipment, net		359.0	366.0
Depreciation expense	$ 3.8	56.7	49.6	$ 49.8
Non-cash property, plant and equipment additions		2.9
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		71.2	71.4
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		368.3	345.1
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		493.2	499.9
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 30.3	$ 30.4