Acquisitions Los Angeles Acquisition Pro Forma Financial Information (Details) - Los Angeles Acquisition - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Business Acquisition, Pro Forma Information
Revenues	$ 43,510	$ 44,695
Net Earnings attributable to Tesoro Corporation	$ 515	$ 886
Basic Earnings Per Share from Continuing Operations	$ 3.67	$ 7.31
Diluted Earnings Per Share from Continuing Operations	$ 3.61	$ 7.20

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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