Property, Plant and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property Plant And Equipment
Capital lease assets	$ 13.3	$ 13.3	$ 7.6
Accumulated depreciation on capital lease assets	4.7	4.7	2.7
Interest capitalized		0.2	$ 0.0	$ 0.6
Impairment on property, plant and equipment	$ 40.5	40.5
Land and improvements
Property Plant And Equipment
Impairment on property, plant and equipment		10.2
Buildings and improvements
Property Plant And Equipment
Impairment on property, plant and equipment		8.0
Machinery, equipment, furniture and fixtures
Property Plant And Equipment
Impairment on property, plant and equipment		21.4
Construction work in Progress
Property Plant And Equipment
Impairment on property, plant and equipment		$ 0.9