Property, Plant and Equipment (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Property, plant and equipment:
Property, plant and equipment	$ 1,796.0	$ 1,784.6
Accumulated depreciation	(770.1)	(768.2)
Property, plant and equipment, net	$ 1,025.9	$ 1,016.4