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CREDIT FACILITIES AND LONG-TERM DEBT (Details 2) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Principal repayments required on long-term debt    
2012 $ 3.1  
2013 3.5  
2014 3.6  
2015 3.7  
2016 3.9  
Thereafter 724.7  
Total long-term debt $ 742.5 $ 513.9