Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 7,304.6	$ 7,257.4
Accumulated depreciation	(5,092.9)	(5,050.3)
Property, plant and equipment, net	2,211.7	2,207.1
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	22.5	22.5
Buildings And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	2,428.7	2,419.8
Capitalized Software Costs [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	630.6	623.8
Instruments [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	3,964.9	3,905.0
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 257.9	$ 286.3