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EMPLOYEE BENEFITS (Other Employee Benefit Plans) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Defined Contribution Plans
     
Other Employee Benefit Plans      
Defined contribution plans employer matching contributions $ 2.7 $ 3.7 $ 3.7
Split Dollar life insurance plan
     
Other Employee Benefit Plans      
Estimate of costs expected to be paid in following year to maintain life insurance policies 1.0    
Accretion expense 1.1 0.9 1.0
Split dollar life insurance obligation recognized in the balance sheet 7.3 7.3  
Discount rate used to determine obligations (as a percent) 3.44% 2.57%  
Cash surrender value of life insurance $ 6.5 $ 3.6