Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 5,916.8	$ 5,437.1
Accumulated depreciation	(3,839.4)	(3,421.7)
Property, plant and equipment, net	2,077.4	2,015.4
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	27.6	28.0
Building And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	2,007.0	1,885.6
Capitalized Software Costs [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	482.4	425.8
Instruments [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	3,250.5	2,950.5
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 149.3	$ 147.2