Goodwill and Intangible Assets - Summary of Goodwill by Segment (Detail) - USD ($) $ in Millions	Apr. 30, 2022	Oct. 31, 2021
Goodwill [Line Items]
Goodwill	$ 157.3	$ 157.3
Fire & Emergency [Member]
Goodwill [Line Items]
Goodwill	88.6	88.6
Commercial [Member]
Goodwill [Line Items]
Goodwill	26.2	26.2
Recreation [Member]
Goodwill [Line Items]
Goodwill	$ 42.5	$ 42.5

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))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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-URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
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-URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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