DERIVATIVES (Gain (Loss) Recognized in Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	$ 0	$ (888)	$ 0	$ (7,264)
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	2,729	(4,015)	1,660	(6,886)
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	20,900	29,563	29,942	29,563
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	(2,729)	3,127	(1,660)	(378)
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	(20,900)	(29,563)	(29,942)	(29,563)
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	$ 70,624	$ (23,843)	$ 101,902	$ (9,894)