DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Detail 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Hedge Ineffectiveness
Ineffectiveness excluding the time value component on fair value hedging instruments:
Net loss in income	$ (8,423)	$ (4,946)
Futures Contracts
Derivatives designated as fair value hedging instruments:
Unrealized loss on inventory hedges	(1,600)
Derivatives NOT Designated as Hedging Instruments \| Product sales \| Physical Fixed Price Derivative Contracts
Gains (losses), derivative instruments
Gains (losses) on derivative instruments recognized in income	7,055	(3,372)
Derivatives NOT Designated as Hedging Instruments \| Product sales \| Physical Index Derivative Contracts
Gains (losses), derivative instruments
Gains (losses) on derivative instruments recognized in income	(5)	6
Derivatives NOT Designated as Hedging Instruments \| Cost of product sales \| Physical Fixed Price Derivative Contracts
Gains (losses), derivative instruments
Gains (losses) on derivative instruments recognized in income	2,639	1,411
Derivatives NOT Designated as Hedging Instruments \| Cost of product sales \| Physical Index Derivative Contracts
Gains (losses), derivative instruments
Gains (losses) on derivative instruments recognized in income	(156)	(192)
Derivatives NOT Designated as Hedging Instruments \| Cost of product sales \| Refined petroleum products \| Futures Contracts
Gains (losses), derivative instruments
Gains (losses) on derivative instruments recognized in income	8,705	6,488
Derivatives Designated as Hedging Instruments \| Cost of product sales \| Hedge Ineffectiveness
Ineffectiveness excluding the time value component on fair value hedging instruments:
Fair value hedge ineffectiveness (excluding time value)	1,066	4,732
Time value excluded from hedge assessment	(9,489)	(9,678)
Derivatives Designated as Hedging Instruments \| Cost of product sales \| Refined petroleum products
Derivatives designated as fair value hedging instruments:
Physical inventory - hedged items	9,424	(6,225)
Derivatives Designated as Hedging Instruments \| Cost of product sales \| Refined petroleum products \| Futures Contracts
Derivatives designated as fair value hedging instruments:
Unrealized loss on inventory hedges	$ 17,847	$ (1,279)

Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 25

-Section 50

-Paragraph 1

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

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The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

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Net gain (loss) relating to components of the gain (loss) on the fair value hedging instrument excluded from the assessment of fair value hedge effectiveness. Recognized in earnings.

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Amount of gain (loss)recognized in the income statement from the hedging ineffectiveness of a fair value hedge.

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