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STOCK-BASED COMPENSATION (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended 3 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended
Dec. 31, 2013
plan
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Stock options
Jun. 30, 2013
Stock options
Mar. 31, 2013
Stock options
Dec. 31, 2013
2011 Omnibus Incentive Plan
Dec. 31, 2013
2011 Omnibus Incentive Plan
Stock options
Dec. 31, 2013
2011 Omnibus Incentive Plan
Stock options
Maximum
Dec. 31, 2013
2009 Directors Plan
Dec. 31, 2013
2009 Directors Plan
Minimum
Jun. 04, 2009
2009 Directors Plan
Stock options, non-employee directors
Dec. 31, 2013
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               5 years          
Tenure of award                 10 years        
The period during which awards can be granted, effective June 4, 2009                       10 years  
Common stock granted, net of cancellations (in shares)       106,000 450,000 636,000 2,745,630           70,655
Shares available for grant             10,727,561           1,529,345
Compensation expense on share-based plans $ 28.8 $ 28.4 $ 19.4