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Derivative Instruments and Risk Management	3 Months Ended
	Mar. 31, 2013
Derivative Instruments and Risk Management [Abstract]
DERIVATIVE INSTRUMENTS AND RISK MANAGEMENT	DERIVATIVE INSTRUMENTS AND RISK MANAGEMENT

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The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

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