ACCUMULATED OTHER COMPREHENSIVE LOSS - Reclassification out of Accumulated Comprehensive Loss (Details) - Jun. 30, 2015 - USD ($) $ in Millions	Total	Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance		$ (243.2)
Ending Balance	$ (254.3)	(254.3)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Portion Attributable to Parent [Abstract]
Reclassifications into earnings - tax expense (benefit)	(0.2)	(0.2)
Change in fair - tax expense (benefit)	(0.2)	(1.4)
Deferred Gain (Loss) - Hedging
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(4.1)	(2.2)
Ending Balance	(4.2)	(4.2)
Deferred Gain (Loss) - Hedging | Interest Rate Swap | Interest Expense | Reclassification out of Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Reclassifications into earnings, net of tax	0.3	0.3
Change in fair value, net of tax	$ (0.4)	$ (2.3)