Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Business Segment, Geographic Area, Product Information and Significant Customer Information - Summary of Goodwill Associated with Reportable Segments (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Goodwill	$ 1,228.2	$ 1,066.4	$ 1,058.5
Vacuum & Analysis [Member]
Segment Reporting Information [Line Items]
Goodwill	195.2	196.2
Light & Motion [Member]
Segment Reporting Information [Line Items]
Goodwill	558.1	395.3
Equipment & Solutions [Member]
Segment Reporting Information [Line Items]
Goodwill	$ 474.9	$ 474.9