Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, plant and equipment
Property, plant and equipment, gross	$ 5,404.9	$ 5,033.2
Accumulated depreciation	(2,719.0)	(2,602.5)
Net property, plant and equipment	2,685.9	2,430.7
Depreciation expense	247.3	239.5	$ 261.3
Land
Property, plant and equipment
Property, plant and equipment, gross	69.5	64.6
Buildings
Property, plant and equipment
Property, plant and equipment, gross	1,023.0	973.4
Machinery and equipment
Property, plant and equipment
Property, plant and equipment, gross	3,904.2	3,612.5
Construction-in-progress
Property, plant and equipment
Property, plant and equipment, gross	$ 408.2	$ 382.7