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EMPLOYEE BENEFIT PLANS (Details 7) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Pension Benefits
   
Estimated future benefit payments    
2013 $ 10.5  
2014 11.0  
2015 11.4  
2016 11.7  
2017 12.0  
2018-2022 64.2  
Non-qualified Pension Benefits
   
Estimated future benefit payments    
2013 0.8  
2014 3.3  
2015 0.6  
2016 0.8  
2017 0.2  
2018-2022 1.6  
Post-retirement Benefits
   
Estimated future benefit payments    
2013 2.2  
2014 2.3  
2015 2.4  
2016 2.4  
2017 2.5  
2018-2022 13.0  
Current liabilities 2.1 2.1
Non-qualified pension benefits and postretirement benefits
   
Estimated future benefit payments    
Current liabilities $ 2.9