Net Property, Plant and Equipment - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net Property, Plant and Equipment
Depreciation expense related to property, plant and equipment	$ 76.4	$ 71.2	$ 59.3
Capitalized costs associated with software developed for internal use	8.9	5.7
Construction in progress
Net Property, Plant and Equipment
Capitalized interest	$ 2.1	$ 2.6