Business Segment, Geographic Area, Product Information and Significant Customer Information - Reconciliation of Segment Gross Profit to Consolidated Net Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Gross profit	$ 1,380.2	$ 1,049.5	$ 830.4
Research and development	200.0	173.1	164.1
Selling, general and administrative	385.1	353.1	330.3
Acquisition and integration costs	29.8	3.8	37.3
Restructuring and other	11.1	9.4	7.0
Amortization of intangible assets	55.3	55.2	67.4
Asset impairment		2.3	4.7
COVID-19 related net credits		(1.2)
Fees and expenses related to repricing of Term Loan Facility			6.6
Gain on sale of long-lived assets			(6.8)
Income from operations	698.9	453.8	219.8
Interest income	0.6	1.4	5.4
Interest expense	25.4	29.1	44.1
Other expense, net	8.6	3.1	3.3
Income before income taxes	665.5	423.0	177.8
Provision for income taxes	114.1	72.9	37.4
Net income	551.4	350.1	140.4
Vacuum & Analysis [Member]
Segment Reporting Information [Line Items]
Gross profit	867.8	633.7	426.4
Light & Motion [Member]
Segment Reporting Information [Line Items]
Gross profit	384.8	309.8	336.8
Equipment & Solutions [Member]
Segment Reporting Information [Line Items]
Gross profit	$ 127.6	$ 106.0	$ 67.2