GOODWILL AND INTANGIBLE ASSETS, NET (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Changes in goodwill by business segment
Balance at the beginning of the period, goodwill gross	$ 331.7	$ 327.0
Balance at the beginning of the period, goodwill net	269.9	265.2
Accumulated impairment	(61.8)	(61.8)	$ (61.8)
Foreign exchange effect and other	5.5	4.7
Balance at the end of the period, goodwill gross	337.2	331.7
Balance at the end of the period, goodwill net	275.4	269.9
Aerial Work Platforms
Changes in goodwill by business segment
Balance at the beginning of the period, goodwill gross	139.3	139.2
Balance at the beginning of the period, goodwill net	100.7	100.6
Accumulated impairment	(38.6)	(38.6)	(38.6)
Foreign exchange effect and other	1.3	0.1
Balance at the end of the period, goodwill gross	140.6	139.3
Balance at the end of the period, goodwill net	102.0	100.7
Materials Processing
Changes in goodwill by business segment
Balance at the beginning of the period, goodwill gross	192.4	187.8
Balance at the beginning of the period, goodwill net	169.2	164.6
Accumulated impairment	(23.2)	(23.2)	$ (23.2)
Foreign exchange effect and other	4.2	4.6
Balance at the end of the period, goodwill gross	196.6	192.4
Balance at the end of the period, goodwill net	$ 173.4	$ 169.2