Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 4,213.3	$ 3,410.6
Accumulated depreciation	(2,214.7)	(2,121.8)
Property, plant and equipment, net	1,998.6	1,288.8
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	41.5	20.4
Building And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	1,619.2	1,283.4
Capitalized Software Costs [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	295.0	294.7
Instruments [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	2,111.1	1,696.3
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 146.5	$ 115.8