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INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
INCOME TAXES |  |  |  |
U.S. federal and state statutory corporate income tax rate (as a percent) |  |  | 35.00% |
Recovery of income taxes related to Argentine peso devaluation | $ 2.5 | $ 7.5 | $ 21.4 | $ 13.7
Deferred Income Tax on Impairment of Mineral Properties | $ 22.5 | $ 4.8 | $ 22.5 | $ 4.8

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- Definition Represents the income tax expense (benefit) related to fluctuations in the foreign exchange rate between the Argentine peso and the U.S. dollar. + References No definition available. + Details
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