Goodwill and Other Intangible Assets - Schedule of Changes in Net Carrying Value of Goodwill by Reportable Segment (Detail) $ in Millions	9 Months Ended
Sep. 30, 2020 USD ($)
Goodwill
Goodwill, beginning balance	$ 485.3
Acquisition of business	7.1
Divestiture of businesses	(7.0)
Foreign currency translation	1.5
Goodwill, ending balance	486.9
Sealing Products
Goodwill
Goodwill, beginning balance	468.6
Acquisition of business	7.1
Divestiture of businesses	(7.0)
Foreign currency translation	1.6
Goodwill, ending balance	470.3
Engineered Products
Goodwill
Goodwill, beginning balance	16.7
Acquisition of business	0.0
Divestiture of businesses	0.0
Foreign currency translation	(0.1)
Goodwill, ending balance	$ 16.6

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
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10)(1))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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-Name Accounting Standards Codification
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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