FINANCIAL INSTRUMENTS 2 (Details) (Derivatives Energy Related Assets [Member], Supplier Concentration Risk [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2013
Derivatives Energy Related Assets [Member] \| Supplier Concentration Risk [Member]
Concentration Risk [Line Items]
Amount of derivatives - energy related assets with single retail counterparty	$ 14.9
Percentage of derivatives - energy related assets with a single retail counterparty (in hundredths)	30.70%

This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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