Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Property Plant And Equipment Useful Life And Values [Abstract]
Land	$ 21.7	$ 21.7
Buildings and equipment	1,371.1	1,353.1
Capitalized software costs	282.1	272.6
Instruments	1,705.2	1,610.6
Construction in progress	84.4	58.2
Property, plant and equipment, Gross	3,464.5	3,316.2
Accumulated depreciation	(2,189.1)	(2,091.5)
Property, plant and equipment, net	$ 1,275.4	$ 1,224.7