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Major Customers and Concentrations of Credit Risk (Notes)	9 Months Ended
	Sep. 30, 2011
Major Customers And Concentrations Of Credit Risk [Abstract]
Major Customers and Concentrations of Credit Risk [Text Block]	MAJOR CUSTOMERS AND CONCENTRATIONS OF CREDIT RISK For the three and nine months ended September 30, 2011, TRMC, a wholly owned subsidiary of Tesoro, accounted for 96% and 95%, respectively, of our total revenues. Historically, TRMC was a customer of the crude oil gathering segment and accounted for 84% and 83% of our Predecessor's total revenues in the three and nine months ended September 30, 2010, respectively. No revenues were recorded for the Predecessor with TRMC in the terminalling, transportation and storage segment prior to April 26, 2011.

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The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

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