Business Segment, Geographic Area, Product/Service Offerings and Significant Customer Information - Schedule of Capital Expenditures, Depreciation and Amortization Expense of Intangible Assets by Reportable Segment (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Capital expenditures	$ 10.0	$ 14.5
Depreciation and amortization	28.4	25.2
Vacuum & Analysis [Member]
Segment Reporting Information [Line Items]
Capital expenditures	4.1	7.5
Depreciation and amortization	4.9	4.1
Light & Motion [Member]
Segment Reporting Information [Line Items]
Capital expenditures	4.0	5.1
Depreciation and amortization	13.4	14.1
Equipment & Solutions [Member]
Segment Reporting Information [Line Items]
Capital expenditures	1.9	1.9
Depreciation and amortization	$ 10.1	$ 7.0