Property, Plant and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Land	$ 141.2	$ 137.8
Buildings	1,213.6	1,107.8
Leasehold improvements	80.6	123.7
Machinery and equipment	1,207.7	1,105.8
Computer software and hardware	767.1	746.8
Furniture and fixtures	55.3	60.6
Construction in progress	1,276.0	658.6
Total cost	4,741.5	3,941.1
Less: accumulated depreciation	(1,559.1)	(1,439.3)
Total property, plant and equipment, net	$ 3,182.4	$ 2,501.8