SEGMENT INFORMATION - THIRD PARTY NET SALES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue, Major Customer [Line Items]
Total net sales	$ 894.8	$ 962.1	$ 2,259.7	$ 2,917.7
Technologies & Equipment
Revenue, Major Customer [Line Items]
Total net sales	503.8	534.5	1,328.0	1,613.7
Consumables
Revenue, Major Customer [Line Items]
Total net sales	$ 391.0	$ 427.6	$ 931.7	$ 1,304.0