Business Segment, Geographic Area, Product Information and Significant Customer Information - Segment Assets by Reportable Segment (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Accounts Receivable	$ 442.6	$ 392.7
Inventory	576.7	501.4
Total assets	1,019.3	894.1
Corporate, Eliminations & Other [Member]
Segment Reporting Information [Line Items]
Accounts Receivable	(25.3)	(10.7)
Inventory	(1.0)	(1.7)
Total assets	(26.3)	(12.4)
Vacuum & Analysis [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Accounts Receivable	285.4	229.1
Inventory	338.9	273.3
Total assets	624.3	502.4
Light & Motion [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Accounts Receivable	146.2	122.6
Inventory	177.3	166.1
Total assets	323.5	288.7
Equipment & Solutions [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Accounts Receivable	36.3	51.7
Inventory	61.5	63.7
Total assets	$ 97.8	$ 115.4