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Net Income Per Unit (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Net Income Per Unit [Line Items]    
Net income attributable to partners $ 14,640dkl_NetIncomeLossAttributableToPartners [1] $ 14,672dkl_NetIncomeLossAttributableToPartners [2],[3]
Less: General partner's distribution (including IDRs) 868us-gaap_GeneralPartnerDistributions [4] 209us-gaap_GeneralPartnerDistributions [4]
Less: Limited partners' distribution 12,834us-gaap_LimitedPartnersCapitalAccountDistributionAmount 10,265us-gaap_LimitedPartnersCapitalAccountDistributionAmount
Earnings in excess of distributions 938us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities 4,198us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
Footnote [Abstract]    
General partner's ownership interest 2.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest 2.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Incentive Distribution, Minimum Distribution Level $ 0.43125dkl_IncentiveDistributionMinimumDistributionLevel  
Common Units [Member]    
Net Income Per Unit [Line Items]    
Less: Limited partners' distribution 6,475us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember		 5,165us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
Common units - basic (units) 12,216,447us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember		 [1] 12,152,498us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember		 [3]
Common units - diluted (units) 12,356,331us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember		 [1] 12,281,344us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember		 [3]
Common- basic (dollars per unit) $ 0.57us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember		 [1] $ 0.60us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember		 [3]
Common- diluted (dollars per unit) $ 0.56us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember		 [1] $ 0.59us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember		 [3]
Subordinated unitholders - Delek    
Net Income Per Unit [Line Items]    
Less: Limited partners' distribution 6,359us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember		 5,100us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
Subordinated unitholders - Delek; 11,999,258 units issued and outstanding at March 31, 2015 (11,999,258 at December 31, 2014)    
Net Income Per Unit [Line Items]    
Subordinated units - Delek basic and diluted (units) 11,999,258dkl_WeightedAverageLimitedPartnerUnitsOutstandingSubordinatedUnitsBasicAndDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedDelekMember		 [1] 11,999,258dkl_WeightedAverageLimitedPartnerUnitsOutstandingSubordinatedUnitsBasicAndDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedDelekMember		 [3]
Subordinated units - Delek (basic and diluted) $ 0.57us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedDelekMember		 [1] $ 0.60us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedDelekMember		 [3]
General Partner [Member]    
Net Income Per Unit [Line Items]    
Net income attributable to partners 887dkl_NetIncomeLossAttributableToPartners
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember		  
Less: General partner's distribution (including IDRs) 868us-gaap_GeneralPartnerDistributions
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember		 [4] 209us-gaap_GeneralPartnerDistributions
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember		 [4]
Earnings in excess of distributions 19us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember		 84us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember
Total partners' earnings 887us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember		 293us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_GeneralPartnerMember
Limited Partner [Member] | Common Units [Member]    
Net Income Per Unit [Line Items]    
Less: Limited partners' distribution 6,475us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember		 5,165us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
Earnings in excess of distributions 464us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember		 2,070us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
Total partners' earnings 6,939us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember		 7,235us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
Limited Partner [Member] | Subordinated unitholders - Delek    
Net Income Per Unit [Line Items]    
Less: Limited partners' distribution 6,359us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember		 5,100us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
Earnings in excess of distributions 455us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember		 2,044us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
Total partners' earnings 6,814us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember		 7,144us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember
Limited Partner [Member] | Subordinated unitholders - Delek; 11,999,258 units issued and outstanding at March 31, 2015 (11,999,258 at December 31, 2014)    
Net Income Per Unit [Line Items]    
Net income attributable to partners $ 6,815dkl_NetIncomeLossAttributableToPartners
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedDelekMember
/ us-gaap_PartnerTypeOfPartnersCapitalAccountAxis
= us-gaap_LimitedPartnerMember		  
[1] The information presented includes the results of operations of the Logistics Assets Predecessor. Prior to the El Dorado Offloading Racks Acquisition and the Tyler Crude Tank Acquisition, the Logistics Assets Predecessor did not record revenues for intercompany throughput and storage services. See Notes 1 and 2 for further discussion.
[2] There were no revenues or expenses associated with the Tyler Assets Predecessor included in our condensed consolidated financial statements for the three months ended March 31, 2014 as the Tyler Assets were not fully constructed and were not placed into service until January 2015.
[3] Adjusted to include the historical results of the Logistics Assets Predecessor. See Notes 1 and 2 for further discussion.
[4] General partner distributions (including IDRs) consist of the 2% general partner interest and IDRs, which represent the right of the general partner to receive increasing percentages of quarterly distributions of available cash from operating surplus in excess of $0.43125 per unit per quarter. See Note 7 for further discussion related to IDRs.