INCOME TAXES - Provision (Benefit) for Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current
Federal	$ 4.7us-gaap_CurrentFederalTaxExpenseBenefit	$ 0.3us-gaap_CurrentFederalTaxExpenseBenefit	$ 0.6us-gaap_CurrentFederalTaxExpenseBenefit
State	0.3	(2.1)	2.2
Foreign	13.7us-gaap_CurrentForeignTaxExpenseBenefit	6.4us-gaap_CurrentForeignTaxExpenseBenefit	8.2us-gaap_CurrentForeignTaxExpenseBenefit
Total current (benefit) provision for income taxes	18.7us-gaap_CurrentIncomeTaxExpenseBenefit	4.6us-gaap_CurrentIncomeTaxExpenseBenefit	11.0us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred
Federal	(31.5)	(3.5)	3.3
State	(3.3)	(4.2)	1.0
Foreign	(3.3)	0	0
Total deferred (benefit) provision for income taxes	(38.1)us-gaap_DeferredIncomeTaxExpenseBenefit	(7.7)us-gaap_DeferredIncomeTaxExpenseBenefit	4.3us-gaap_DeferredIncomeTaxExpenseBenefit
(Benefit) provision for income taxes	$ (19.4)us-gaap_IncomeTaxExpenseBenefit	$ (3.1)us-gaap_IncomeTaxExpenseBenefit	$ 15.3us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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