INVENTORIES (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Inventory [Line Items]
Crude oil and feedstocks	$ 1,034,615			$ 1,034,615		$ 1,137,605
Refined products and blendstocks	1,110,826			1,110,826		1,098,746
Warehouse stock and other	63,588			63,588		55,257
Inventory, Gross	2,209,029			2,209,029		2,291,608
Lower of cost or market reserve	(900,493)	$ 1,058,273	$ 562,944	(900,493)	$ 562,944	(1,117,336)	$ 668,902	$ (690,110)
Inventories	1,308,536			1,308,536		1,174,272
Operating Income (Loss)	(209,254)		(249,373)	(179,255)	(403,662)
Titled Inventory [Member]
Inventory [Line Items]
Crude oil and feedstocks	1,034,615			1,034,615		1,137,605
Refined products and blendstocks	739,813			739,813		687,389
Warehouse stock and other	63,588			63,588		55,257
Inventory, Gross	1,838,016			1,838,016		1,880,251
Lower of cost or market reserve	(765,620)			(765,620)		(966,564)
Inventories	1,072,396			1,072,396		913,687
Inventory Supply and Offtake Arrangements [Member]
Inventory [Line Items]
Crude oil and feedstocks	0			0		0
Refined products and blendstocks	371,013			371,013		411,357
Warehouse stock and other	0			0		0
Inventory, Gross	371,013			371,013		411,357
Lower of cost or market reserve	(134,873)			(134,873)		(150,772)
Inventories	236,140			$ 236,140		$ 260,585
Scenario, Adjustment [Member]
Inventory [Line Items]
Operating Income (Loss)	$ 157,780	$ 216,843	$ 105,958		$ 127,166