GOODWILL AND INTANGIBLE ASSETS, NET (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021 USD ($)
Changes in goodwill by business segment
Balance at the beginning of the period, goodwill gross	$ 337.2
Accumulated impairment	(61.8)
Balance at the beginning of the period, goodwill net	275.4
Foreign exchange effect and other	1.2
Balance at the end of the period, goodwill gross	338.4
Accumulated impairment	(61.8)
Balance at the end of the period, goodwill net	276.6
AWP
Changes in goodwill by business segment
Balance at the beginning of the period, goodwill gross	140.6
Accumulated impairment	(38.6)
Balance at the beginning of the period, goodwill net	102.0
Foreign exchange effect and other	(0.3)
Balance at the end of the period, goodwill gross	140.3
Accumulated impairment	(38.6)
Balance at the end of the period, goodwill net	101.7
MP
Changes in goodwill by business segment
Balance at the beginning of the period, goodwill gross	196.6
Accumulated impairment	(23.2)
Balance at the beginning of the period, goodwill net	173.4
Foreign exchange effect and other	1.5
Balance at the end of the period, goodwill gross	198.1
Accumulated impairment	(23.2)
Balance at the end of the period, goodwill net	$ 174.9