Business Segment, Geographic Area, Product Information and Significant Customer Information - Net Revenues by Reportable Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net revenues	$ 2,949.6	$ 2,330.0	$ 1,899.8
Vacuum & Analysis [Member]
Segment Reporting Information [Line Items]
Net revenues	1,861.5	1,405.9	990.5
Light & Motion [Member]
Segment Reporting Information [Line Items]
Net revenues	813.4	689.6	725.6
Equipment & Solutions [Member]
Segment Reporting Information [Line Items]
Net revenues	$ 274.7	$ 234.5	$ 183.7