Represents the number of assets relating to a particular asset category used in an operating segment.

No definition available.

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- Details

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 7

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- Definition

Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)(1)

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

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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-Publisher FASB

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-Topic 230

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-Section 45

-Paragraph 13

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- Definition

Date of acquisition or disposal, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Tesoro Logistics LP Other Transactions (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	12 Months Ended	0 Months Ended
	Jun. 01, 2013	Dec. 31, 2014	Jul. 01, 2014	Sep. 30, 2014
Business Acquisition
Purchase Price Consideration	$ 2,420
Number of assets	6tso_NumberOfAssets
West Coast Logistics Assets Acquisition
Business Acquisition
Purchase Price Consideration		270
Phase One \| West Coast Logistics Assets Acquisition
Business Acquisition
Purchase Price Consideration			241
Date of acquisition			Jul. 01, 2014
Equity, fair value			27
Cash paid for acquisition			214
Phase One \| West Coast Logistics Assets Acquisition \| Marketing Terminals
Business Acquisition
Number of assets			3
Phase Two \| West Coast Logistics Assets Acquisition
Business Acquisition
Date of acquisition				Sep. 30, 2014
Cash paid for acquisition				$ 29