STOCK-BASED COMPENSATION (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended			3 Months Ended				12 Months Ended					1 Months Ended	12 Months Ended
	Dec. 31, 2012 plan	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Stock options	Sep. 30, 2012 Stock options	Jun. 30, 2012 Stock options	Mar. 31, 2012 Stock options	Dec. 31, 2012 2011 Omnibus Incentive Plan	Dec. 31, 2012 2011 Omnibus Incentive Plan Stock options	Dec. 31, 2012 2011 Omnibus Incentive Plan Stock options Maximum	Dec. 31, 2012 2009 Directors Plan	Dec. 31, 2012 2009 Directors Plan Minimum	Jun. 30, 2009 2009 Directors Plan Stock options, non-employee directors Y	Dec. 31, 2012 2009 Directors Plan Stock options, non-employee directors
Stock-based compensation
Stock-based compensation plans	2
Aggregate amount of common stock authorized (in shares)								14,500,000			1,600,000
Reduction in number of shares for each share granted								2.16
Percentage of award vesting on the last business day prior to the date of the annual meeting											100.00%
Percentage of closing price of the company's common stock on the date an option is granted to determine the exercise price												100.00%
Vesting period (in years)									5 years
Tenure of award (in years)										P10Y
The period during which awards can be granted, effective June 4, 2009 (in years)													10
Common stock granted, net of cancellations (in shares)				53,000	207,000	65,000	120,000	1,599,105						59,665
Shares available for grant								11,884,455						1,540,335
Compensation expense on share-based plans	$ 28.4	$ 19.4	$ 16.9