Initial Public Offering (Details) (USD $)	0 Months Ended	12 Months Ended			1 Months Ended
	Oct. 16, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 31, 2014
Other Ownership Interests [Line Items]
Proceeds from issuance of common units, net of underwriters' discount and commissions		$ 0	$ 325,263,000	$ 0
Offering Costs, Partnership Interests	22,600,000
Distribution Made to Limited Partner, Cash Distributions Paid		18,394,000	0	0
Working Capital, Retained after IPO	75,700,000
Payments of Stock Issuance Costs	2,100,000	0	2,117,000	0
Common Units [Member]
Other Ownership Interests [Line Items]
Proceeds from Issuance of Common Limited Partners Units	347,900,000
Proceeds from issuance of common units, net of underwriters' discount and commissions	325,300,000
Sale of Stock, Price Per Share	$ 22.00
Revolving Credit Facility [Member] | Revolving Credit Agreement - WNRL [Member]
Other Ownership Interests [Line Items]
Debt Instrument, Fee Amount	2,600,000
Line of Credit Facility, Current Borrowing Capacity	300,000,000
Public [Member]
Other Ownership Interests [Line Items]
Partners' Capital Account, Units, Sold in Public Offering	15,812,500
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest	34.70%
Public [Member] | Common Units [Member]
Other Ownership Interests [Line Items]
Partners' Capital Account, Units, Sold in Public Offering	15,812,500
Western Refining, Inc. [Member]
Other Ownership Interests [Line Items]
Distribution Made to Limited Partner, Cash Distributions Paid	$ 244,900,000
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest	65.30%	66.20%			66.20%
Western Refining, Inc. [Member] | Common Units [Member]
Other Ownership Interests [Line Items]
Partners' Capital Account, Units, Sold in Public Offering	6,998,500
Western Refining, Inc. [Member] | Subordinated Units [Member]
Other Ownership Interests [Line Items]
Partners' Capital Account, Units, Sold in Public Offering	22,811,000