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INCOME TAXES (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Dec. 31, 2011
INCOME TAXES    
Valuation allowance for net deferred tax assets $ 155.1 $ 162.3
Decrease in valuation allowance $ (7.2)  
Period of cumulative loss position 3 years