Goodwill and Purchased Intangible Assets - Schedule of Changes in Goodwill (Details) $ in Millions	6 Months Ended
Jun. 30, 2022 USD ($)
Changes in goodwill
Net goodwill at the beginning of the period	$ 1,049.0
Foreign currency translation	(14.9)
Acquisition	8.9
Net goodwill at the end of the period	1,043.0
Access Equipment
Changes in goodwill
Net goodwill at the beginning of the period	877.6
Foreign currency translation	(14.9)
Net goodwill at the end of the period	862.7
Defense
Changes in goodwill
Net goodwill at the beginning of the period	44.4
Net goodwill at the end of the period	44.4
Fire & Emergency
Changes in goodwill
Net goodwill at the beginning of the period	106.1
Acquisition	8.9
Net goodwill at the end of the period	115.0
Commercial
Changes in goodwill
Net goodwill at the beginning of the period	20.9
Net goodwill at the end of the period	$ 20.9

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
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 55
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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.

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