INVENTORIES (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Inventory [Line Items]
Crude oil and feedstocks	$ 765,227	$ 608,436
Refined products and blendstocks	986,031	803,319
Other Inventory, Supplies, Gross	36,207	33,762
Total inventory	1,787,465	1,445,517
Excess of replacement value of inventory over LIFO carrying value	7,388	78,407
Titled Inventory [Member]
Inventory [Line Items]
Crude oil and feedstocks	711,980	518,599
Refined products and blendstocks	642,919	425,033
Other Inventory, Supplies, Gross	36,207	33,762
Total inventory	1,391,106	977,394
Inventory Supply and Offtake Arrangements [Member]
Inventory [Line Items]
Crude oil and feedstocks	53,247	89,837
Refined products and blendstocks	343,112	378,286
Other Inventory, Supplies, Gross	0	0
Total inventory	$ 396,359	$ 468,123