RESTRUCTURING AND IMPAIRMENT CHARGES (Incurred Costs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		10 Months Ended	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Impairment costs associated with this plan	$ 1.4	$ 0.1	$ 5.7	$ 0.3
Amount of total that represents cash charges	$ 3.4	$ 0.5	5.3	$ 0.8
2018 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and restructuring-related			4.6		$ 15.8	$ 11.2
Impairment costs associated with this plan			5.5		10.6	5.1
Total Amount Incurred			10.1		26.4	16.3
Amount of total that represents cash charges			$ 5.2		$ 12.1	$ 6.9