INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal and state statutory income tax rate (as a percent)	36.00%	36.00%
Effective income tax rate (as a percent)	5.00%	(0.50%)
Non-current income tax receivable			$ 20.7
Income tax refund	6.6
Interest income included in tax refund	0.7
Decrease in income tax receivable balance	5.3
Credit to current income tax expense	0.6
Current income tax receivable	$ 15.4