DEBT (Details 3) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended			12 Months Ended		1 Months Ended
	Dec. 31, 2013 1.25% Convertible Senior Notes Due March 2015 [Member]	Dec. 31, 2012 1.25% Convertible Senior Notes Due March 2015 [Member]	Mar. 31, 2010 1.25% Convertible Senior Notes Due March 2015 [Member]	Dec. 31, 2013 Convertible Debt Converted Debt [Member]	Dec. 31, 2011 Convertible Debt Converted Debt [Member]	Feb. 13, 2014 Subsequent Event [Member] 1.25% Convertible Senior Notes Due March 2015 [Member]
Debt Instrument
Reclassification Adjustment for Convertible Debt in Mezzanine	$ 8.5	$ 54.7
Cash repayment of principal amount of convertible debt				414.6	0.2	58.0
Shares issued in satisfaction of conversion value in excess of principal amount (in shares)				972,235	4,869
Extinguishment of Debt, Amount						58
Debt Instrument, Interest Rate, Stated Percentage			1.25%
Unamortized debt issuance costs written off to interest expense related to debt conversions				$ 2.4