Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE OF FINANCIAL INSTRUMENTS FAIR VALUE OF FINANCIAL INSTRUMENTS (Impairment Charges on Financial and Nonfinancial Assets) (Details)

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FAIR VALUE OF FINANCIAL INSTRUMENTS FAIR VALUE OF FINANCIAL INSTRUMENTS (Impairment Charges on Financial and Nonfinancial Assets) (Details) (Amapa [Member], USD $)
In Millions, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
ASSETS:    
Equity Method Investments, Fair Value Disclosure $ 0 $ 72.5
Equity Method Investment, Other than Temporary Impairment 67.6 365.4
Fair Value, Inputs, Level 1 [Member]
   
ASSETS:    
Equity Method Investments, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 2 [Member]
   
ASSETS:    
Equity Method Investments, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member]
   
ASSETS:    
Equity Method Investments, Fair Value Disclosure $ 0 $ 72.5