Net Property, Plant and Equipment - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net Property, Plant and Equipment
Depreciation expense related to property, plant and equipment	$ 93.3	$ 76.4	$ 71.2
Capitalized costs associated with software developed for internal use		8.9
Construction in progress
Net Property, Plant and Equipment
Capitalized interest	$ 1.9	$ 2.1