Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 5,015.4	$ 4,671.5
Accumulated depreciation	(2,966.8)	(2,633.6)
Property, plant and equipment, net	2,048.6	2,037.9
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	29.4	37.0
Buildings And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	1,833.5	1,789.9
Capitalized Software Costs [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	406.8	397.2
Instruments [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	2,634.4	2,347.6
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 111.3	$ 99.8