DERIVATIVE INSTRUMENTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosures
Maximum maturity period of derivative instruments qualifying as cash flow hedges	1 year
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 0.8	$ (0.1)
Foreign Exchange Contract | Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures
Derivative Liability, Notional Amount	38.2	45.5
Loss to be Reclassified During Next 12 Months	0.3
Foreign Exchange Contract | Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures
Derivative Liability, Notional Amount	$ 30.3	$ 35.4