STOCK-BASED COMPENSATION (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		3 Months Ended	12 Months Ended			3 Months Ended
	Mar. 31, 2013 item	May 13, 2010	Mar. 31, 2013 2010 Omnibus Incentive Plan	Dec. 31, 2010 2010 Omnibus Incentive Plan	May 13, 2010 2010 Omnibus Incentive Plan	May 13, 2010 2002 Stock Incentive and Bonus Plan and 2003 Non-Employee Directors' Stock Incentive Plan	Mar. 31, 2013 Restricted stock	Mar. 31, 2012 Restricted stock
Stock Based Compensation
Number of new awards	0
Shares of common stock authorized for issuance under the share-based compensation plan	2.5	2.5			2.0	0.5
Shares of common stock authorized for issuance pursuant to the exercise of incentive stock options		1.5
Plan expiration unless earlier terminated by the Board of Directors				10 years
Shares of common stock issued under the Plan			1.5
Granted (in shares)							0.4
Value of grants during the period							$ 10.7
Unrecognized share-based compensation cost related to unvested stock							18.9
Period over which unrecognized share-based compensation cost will be expensed							4 years
Share- based compensation cost							$ 1.7	$ 2.0