EMPLOYEE BENEFIT PLANS (Other Changes in Plan Assets and Benefit Obligation Recognized in Other Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Pension Benefits
Defined Benefit Plan Disclosure
Net actuarial (gain)/loss	$ (0.2)	$ 3.8
Amortization of:
Net actuarial gain	(2.4)	(2.3)
Prior service credit	0.0	0.0
Settlement recognition	(0.5)	(1.4)
Deferred tax asset	0.5	0.3
Foreign currency exchange	0.3	(0.1)
Total recognized in other comprehensive income	(2.3)	0.3
Other Benefits
Defined Benefit Plan Disclosure
Net actuarial (gain)/loss	0.5	0.0
Amortization of:
Net actuarial gain	(0.1)	(0.1)
Prior service credit	(0.3)	(0.4)
Settlement recognition	0.0	0.0
Deferred tax asset	0.0	0.2
Foreign currency exchange	0.0	0.0
Total recognized in other comprehensive income	$ 0.1	$ (0.3)