Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_DistributionMadeToLimitedPartnerCashDistributionsDeclared
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_IncreaseDecreaseInStockholdersEquityRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Aggregate amount of net income allocated to limited partners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

+ Details

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

- Definition

The amount of ownership interest of different classes of partners in limited partnership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_PartnersCapital
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Total change in each class of partners' capital accounts during the year due to exchanges and conversions. Partners include general, limited and preferred partners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

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

- Definition

Total change in each class of partners' capital accounts during the year due to unit-based compensation. All partners include general, limited and preferred partners.

+ References

+ Details

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

- Definition

Amount of increase (decrease) in partners' capital classified as other.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_GeneralPartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=wnr_WesternRefiningInc.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LimitedPartnersCapitalAccountByClassAxis=wnr_TexNewMexUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LimitedPartnersCapitalAccountByClassAxis=wnr_CommonUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_LimitedPartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=wnr_PublicMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LimitedPartnersCapitalAccountByClassAxis=wnr_SubordinatedUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Equity (Equity Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Partners' Capital			$ 98,324
Unit-based compensation			2,099
Conversion of subordinated units			0
Distribution Made to Limited Partner, Cash Distributions Declared			(60,172)
Net Income (Loss) Allocated to Limited Partners	$ 18,728	$ 17,874	38,614	$ 31,881
Contributions			1,387
Partners' Capital	80,252		80,252
General Partner [Member] \| Western Refining, Inc. [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Partners' Capital			(5,532)
Unit-based compensation			0
Conversion of subordinated units			0
Distribution Made to Limited Partner, Cash Distributions Declared			(5,209)
Net Income (Loss) Allocated to Limited Partners			0
Contributions			0
Partners' Capital	(10,741)		(10,741)
TexNew Mex Units [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distribution Made to Limited Partner, Cash Distributions Declared			0
TexNew Mex Units [Member] \| Western Refining, Inc. [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Partners' Capital			(310)
Unit-based compensation			0
Conversion of subordinated units			0
Distribution Made to Limited Partner, Cash Distributions Declared			0
Net Income (Loss) Allocated to Limited Partners			0
Contributions			0
Partners' Capital	(310)		(310)
Common Units [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Allocated to Limited Partners	14,747	8,739	27,725	15,558
Common Units [Member] \| Limited Partner [Member] \| Public [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Partners' Capital			600,100
Unit-based compensation			2,099
Conversion of subordinated units			0
Distribution Made to Limited Partner, Cash Distributions Declared			(26,467)
Net Income (Loss) Allocated to Limited Partners			18,320
Contributions			0
Partners' Capital	594,052		594,052
Common Units [Member] \| Limited Partner [Member] \| Western Refining, Inc. [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Partners' Capital			(132,802)
Unit-based compensation			0
Conversion of subordinated units			(367,766)
Distribution Made to Limited Partner, Cash Distributions Declared			(18,517)
Net Income (Loss) Allocated to Limited Partners			14,949
Contributions			1,387
Partners' Capital	(502,749)		(502,749)
Subordinated Units [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Allocated to Limited Partners	0	$ 8,214	3,845	$ 14,641
Subordinated Units [Member] \| Limited Partner [Member] \| Western Refining, Inc. [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Partners' Capital			(363,132)
Unit-based compensation			0
Conversion of subordinated units			367,766
Distribution Made to Limited Partner, Cash Distributions Declared			(9,979)
Net Income (Loss) Allocated to Limited Partners			5,345
Contributions			0
Partners' Capital	$ 0		$ 0