DERIVATIVES (Gain (Loss) Recognized in Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	$ 0	$ 11,273	$ 0	$ 634
Designated as Hedging Instrument [Member] | Inventory Supply Arrangement Obligation [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in Income on Derivatives	(3,719)	4,880	(1,069)	(2,871)
Designated as Hedging Instrument [Member] | Inventory Intermediation Agreement Obligation [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in Income on Derivatives	(5,770)	0	9,042	0
Designated as Hedging Instrument [Member] | Crude Oil and Feedstock Inventory [Member] | Cost of Sales [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in Income on Derivatives	3,719	6,393	1,069	3,505
Designated as Hedging Instrument [Member] | Intermediates and Refined Products Inventory [Member] | Cost of Sales [Member] | Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in Income on Derivatives	5,770	0	(9,042)	0
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (Loss) Recognized in Income on Derivatives	$ (41,119)	$ (4,728)	$ 31,278	$ 13,949