PENSION AND POST-RETIREMENT BENEFITS - Classification of Net Periodic Pension (Income) Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit (income) costs	$ 0.6	$ 1.2	$ 1.2	$ 1.1	$ 1.5
Cost of Sales [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit (income) costs	0.0	0.0	0.0	0.0
SG&A Expenses [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit (income) costs	0.5	0.7	1.0	1.2
Miscellaneous, Net [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net periodic benefit (income) costs	$ 0.1	$ 0.5	$ 0.2	$ (0.1)