Gain recognized in earnings during the reporting period representing the amount of the fair value hedges' ineffectiveness.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 25

-Section 50

-Paragraph 1

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

Name:	us-gaap_GainOnFairValueHedgeIneffectiveness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

DERIVATIVES (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Crude Oil and Feedstock Inventory [Member] Not Designated as Hedging Instrument [Member] bbl	Dec. 31, 2012 Crude Oil and Feedstock Inventory [Member] Not Designated as Hedging Instrument [Member] bbl	Mar. 31, 2013 Crude Oil and Feedstock Inventory [Member] Fair Value Hedging [Member] bbl	Dec. 31, 2012 Crude Oil and Feedstock Inventory [Member] Fair Value Hedging [Member] bbl	Mar. 31, 2013 Crude Oil Commodity Contract [Member] Not Designated as Hedging Instrument [Member] bbl	Dec. 31, 2012 Crude Oil Commodity Contract [Member] Not Designated as Hedging Instrument [Member] bbl	Mar. 31, 2013 Refined Product Commodity Contract [Member] Not Designated as Hedging Instrument [Member] bbl	Dec. 31, 2012 Refined Product Commodity Contract [Member] Not Designated as Hedging Instrument [Member] bbl
Derivative [Line Items]
Derivative, notional amount, volume		0	0	2,194,091	2,529,447	2,851,000	9,234,000	401,000	1,310,000
Loss on fair value hedge ineffectiveness	$ 4,863
Gain on fair value hedge ineffectiveness	$ 3,876