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Equity-Based Compensation (Details) (WNRL 2013 LTIP [Member], USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Common Stock, Capital Shares Reserved for Future Issuance 4,195,282us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Phantom Share Units (PSUs) [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Allocated Share-based Compensation Expense $ 1.6us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_PhantomShareUnitsPSUsMember
/ us-gaap_PlanNameAxis
= wnr_WNRL2013LTIPMember
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Total Weighted Average Grant Date Fair Value 7.9wnr_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedTotalWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_PhantomShareUnitsPSUsMember
/ us-gaap_PlanNameAxis
= wnr_WNRL2013LTIPMember
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested 8.5us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested
/ us-gaap_AwardTypeAxis
= us-gaap_PhantomShareUnitsPSUsMember
/ us-gaap_PlanNameAxis
= wnr_WNRL2013LTIPMember
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 6.6us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_PhantomShareUnitsPSUsMember
/ us-gaap_PlanNameAxis
= wnr_WNRL2013LTIPMember
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 4 years 1 month 28 days