GOODWILL AND INTANGIBLE ASSETS, NET (Details) $ in Millions	9 Months Ended
	Sep. 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	(3.0)
Balance at the end of the period, goodwill gross	341.5
Accumulated impairment	(61.8)
Balance at the end of the period, goodwill net	279.7
Aquired goodwill recognized during the period	7.3
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	(0.8)
Balance at the end of the period, goodwill gross	139.8
Accumulated impairment	(38.6)
Balance at the end of the period, goodwill net	101.2
Aquired goodwill recognized during the period	0.0
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	(2.2)
Balance at the end of the period, goodwill gross	201.7
Accumulated impairment	(23.2)
Balance at the end of the period, goodwill net	178.5
Aquired goodwill recognized during the period	$ 7.3