Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Land	$ 122.5	$ 126.2
Buildings	924.5	935.4
Machinery and equipment	3,617.1	3,574.4
Other	197.5	191.5
Construction in progress	33.0	59.5
Property, plant and equipment—gross	4,894.6	4,887.0
Less: accumulated depreciation	(3,517.0)	(3,367.1)
Property, plant and equipment—net	1,377.6	1,519.9	$ 1,675.8
Impairment charges related to restructuring	12.0	26.8	69.5
Depreciation expense	214.2	226.4	$ 245.7
Net book value of assets held for sale	$ 0.0	$ 5.2