The number of general partner units issued.

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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
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- Definition

The number of limited partner units issued.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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The number of limited partner units outstanding.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
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- Definition

The cash inflow from the issuance of common limited partners units during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
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Per share or per unit amount of equity securities issued.

+ References

No definition available.

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
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Equity Equity, Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		9 Months Ended
	Oct. 30, 2017	Sep. 30, 2017	Feb. 27, 2017	Dec. 31, 2016
General partner units issued (units)		2,202,880	101,980	2,100,900
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest		2.00%
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage		33.00%
Common units issued (units)		108,075,130	5,000,000	102,981,495
Shares Issued, Price Per Share			$ 56.19
Proceeds from issuance of units, net of issuance costs		$ 287
Public common units
Limited Partners' Capital Account, Units Outstanding		74,020,088
Andeavor common units
Limited Partners' Capital Account, Units Outstanding		34,055,042
Common
Proceeds from issuance of units, net of issuance costs		$ 281
General Partner
Proceeds from issuance of units, net of issuance costs		$ 6
WNRL Merger \| Subsequent Event
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	59.00%
WNRL Merger \| Subsequent Event \| Public common units
Limited Partners' Capital Account, Units Outstanding	89,203,084
Common units issued (units)	15,182,996
WNRL Merger \| Subsequent Event \| Andeavor common units
Limited Partners' Capital Account, Units Outstanding	126,908,584
Common units issued (units)	14,853,542
IDR/GP Transaction \| Subsequent Event
Common units issued (units)	78,000,000