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INCOME TAXES (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2011
Dec. 31, 2010
Notes To Financial Statements [Abstract]    
Minimum threshold percentage required to recognize income tax benefit (in hundredths) 50.00%  
Gross unrecognized income tax benefits $ 57.9 $ 53.6
Unrecognized income tax benefits that would impact effective tax rate 58.9 54.6
Accrued interest and penalties related to unrecognized income tax benefits $ 13.9 $ 12.2