Initial Public Offering (Details) (USD $)	0 Months Ended	9 Months Ended		0 Months Ended				9 Months Ended	0 Months Ended				1 Months Ended
	Oct. 16, 2013	Sep. 30, 2014	Sep. 30, 2013	Oct. 16, 2013 Common Units [Member]	Oct. 16, 2013 Public [Member]	Oct. 16, 2013 Public [Member] Common Units [Member]	Oct. 16, 2013 Western Refining, Inc. [Member]	Sep. 30, 2014 Western Refining, Inc. [Member]	Oct. 16, 2013 Western Refining, Inc. [Member] Common Units [Member]	Oct. 16, 2013 Western Refining, Inc. [Member] Subordinated Units [Member]	Sep. 30, 2014 Revolving Credit Facility [Member] Revolving Credit Agreement - WNRL [Member]	Oct. 16, 2013 Revolving Credit Facility [Member] Revolving Credit Agreement - WNRL [Member]	Oct. 31, 2014 Subsequent Event [Member]	Oct. 15, 2014 Subsequent Event [Member] Revolving Credit Facility [Member] Revolving Credit Agreement - WNRL [Member]	Oct. 15, 2014 Subsequent Event [Member] Revolving Credit Agreement - WNRL [Member] Revolving Credit Facility [Member]
Other Ownership Interests [Line Items]
Partners' Capital Account, Units, Sold in Public Offering					15,812,500	15,812,500			6,998,500	22,811,000
Sale of Stock, Price Per Share				$ 22.00
Proceeds from Issuance of Common Limited Partners Units				$ 347,900,000
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest					34.70%		65.30%	65.30%					66.20%
Cash distributed to Western		13,373,000	0				244,900,000
Line of Credit Facility, Current Borrowing Capacity												300,000,000		31,000,000
Line of Credit Facility, Amount Outstanding											0				269,000,000
Proceeds from Issuance Initial Public Offering				325,300,000
Offering Costs, Partnership Interests	22,600,000
Retained for general partnership purposes	75,700,000
Offering expenses	2,100,000
Debt Instrument, Fee Amount												$ 2,600,000