INVENTORIES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Inventory [Line Items]
Crude oil and feedstocks	$ 608,436	$ 642,388
Refined products and blendstocks	803,319	823,410
Other Inventory, Supplies, Gross	33,762	31,321
Total inventory	1,445,517	1,497,119
Excess of replacement value of inventory over LIFO carrying value	78,407	79,859
Titled Inventory [Member]
Inventory [Line Items]
Crude oil and feedstocks	518,599	384,441
Refined products and blendstocks	425,033	405,545
Other Inventory, Supplies, Gross	33,762	31,321
Total inventory	977,394	821,307
Inventory Supply and Offtake Arrangements [Member]
Inventory [Line Items]
Crude oil and feedstocks	89,837	257,947
Refined products and blendstocks	378,286	417,865
Other Inventory, Supplies, Gross	0	0
Total inventory	$ 468,123	$ 675,812