Goodwill and Purchased Intangible Assets - Schedule of Changes in Goodwill (Details) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Changes in goodwill
Net goodwill at the beginning of the period	$ 1,049.0
Foreign currency translation	(27.6)
Acquisition	7.4
Impairment	(2.1)
Net goodwill at the end of the period	1,026.7
Access Equipment
Changes in goodwill
Net goodwill at the beginning of the period	877.6
Foreign currency translation	(26.9)
Net goodwill at the end of the period	850.7
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
Foreign currency translation	(0.5)
Acquisition	7.4
Net goodwill at the end of the period	113.0
Commercial
Changes in goodwill
Net goodwill at the beginning of the period	20.9
Foreign currency translation	(0.2)
Impairment	(2.1)
Net goodwill at the end of the period	$ 18.6