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Net Income Per Unit (Details) (USD $)
In Thousands, except Share data, unless otherwise specified

3 Months Ended

12 Months Ended

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Net income per unit [Line Items]

Net income attributable to partners

$ 71,997dkl_NetIncomeLossAttributableToPartners

^[1]

$ 47,830dkl_NetIncomeLossAttributableToPartners

^[1]

$ 8,410dkl_NetIncomeLossAttributableToPartners

^[1]

General partner's distribution

1,883us-gaap_GeneralPartnerDistributions

^[2]

785us-gaap_GeneralPartnerDistributions

^[2]

110us-gaap_GeneralPartnerDistributions

^[2]

Limited partners' distribution

45,951us-gaap_LimitedPartnersCapitalAccountDistributionAmount

38,491us-gaap_LimitedPartnersCapitalAccountDistributionAmount

5,376us-gaap_LimitedPartnersCapitalAccountDistributionAmount

Earnings in excess of distributions

24,163us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities

8,554us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities

2,924us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities

Weighted average limited partner units outstanding:

Common units - (basic)

12,171,548us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding

12,025,249us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding

11,999,258us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding

Common units - (diluted)

12,302,629us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted

12,148,774us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted

11,999,258us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted

Subordinated units - Delek (basic and diluted)

11,999,258dkl_WeightedAverageLimitedPartnerUnitsOutstandingSubordinatedUnitsBasicAndDiluted

11,999,258dkl_WeightedAverageLimitedPartnerUnitsOutstandingSubordinatedUnitsBasicAndDiluted

11,999,258dkl_WeightedAverageLimitedPartnerUnitsOutstandingSubordinatedUnitsBasicAndDiluted

Net income per limited partner unit:

Common units - (basic)

$ 2.88us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax

$ 1.95us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax

$ 0.34us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax

Common units - (diluted)

$ 2.85us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted

$ 1.93us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted

$ 0.34us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted

Subordinated units - Delek (basic and diluted)

$ 2.88dkl_NetIncomeLossperSubordinatedunitbasicanddiluted

$ 1.95dkl_NetIncomeLossperSubordinatedunitbasicanddiluted

$ 0.34dkl_NetIncomeLossperSubordinatedunitbasicanddiluted

Limited Partner, Common Units [Member]

Net income per unit [Line Items]

Total earnings

35,085us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= dkl_LimitedPartnerCommonUnitsMember

23,490us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= dkl_LimitedPartnerCommonUnitsMember

4,121us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= dkl_LimitedPartnerCommonUnitsMember

Limited Partner, Subordinated Units [Member]

Net income per unit [Line Items]

Total earnings

34,546us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= dkl_LimitedPartnerSubordinatedUnitsMember

23,383us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= dkl_LimitedPartnerSubordinatedUnitsMember

4,121us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= dkl_LimitedPartnerSubordinatedUnitsMember

General Partner

Net income per unit [Line Items]

General partner's distribution

1,883us-gaap_GeneralPartnerDistributions
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_GeneralPartnerMember

^[2]

785us-gaap_GeneralPartnerDistributions
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_GeneralPartnerMember

^[2]

110us-gaap_GeneralPartnerDistributions
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_GeneralPartnerMember

^[2]

Earnings in excess of distributions

483us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_GeneralPartnerMember

172us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_GeneralPartnerMember

58us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_GeneralPartnerMember

Total earnings

2,366us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_GeneralPartnerMember

957us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_GeneralPartnerMember

168us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_GeneralPartnerMember

Common Units [Member]

Net income per unit [Line Items]

Limited partners' distribution

23,152us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

19,292us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

2,688us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

Weighted average limited partner units outstanding:

Common units - (basic)

12,171,548us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

12,025,249us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[1]

11,999,258us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[1]

Common units - (diluted)

12,302,629us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

12,148,774us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[1]

11,999,258us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[1]

Net income per limited partner unit:

Common units - (basic)

$ 0.81us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

$ 0.60us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

$ 0.88us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

$ 0.60us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[3]

$ 0.46us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[4]

$ 0.51us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[3],[4]

$ 0.48us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[3],[4]

$ 0.50us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[3],[4]

$ 2.88us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

$ 1.95us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[1]

$ 0.34us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[1]

Common units - (diluted)

$ 0.80us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

$ 0.59us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

$ 0.87us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

$ 0.59us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[3]

$ 0.46us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[4]

$ 0.51us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[3],[4]

$ 0.47us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[3],[4]

$ 0.50us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[3],[4]

$ 2.85us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

$ 1.93us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[1]

$ 0.34us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember

^[1]

Common Units [Member] | Limited Partner [Member]

Net income per unit [Line Items]

Limited partners' distribution

23,152us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

19,292us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

2,688us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

Earnings in excess of distributions

11,933us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

4,198us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

1,433us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_CommonUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

Subordinated Units [Member]

Net income per unit [Line Items]

Limited partners' distribution

22,799us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember

19,199us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember

2,688us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember

Subordinated Units [Member] | Limited Partner [Member]

Net income per unit [Line Items]

Limited partners' distribution

22,799us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

19,199us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

2,688us-gaap_LimitedPartnersCapitalAccountDistributionAmount
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

Earnings in excess of distributions

$ 11,747us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

$ 4,184us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

$ 1,433us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities
/ us-gaap_LimitedPartnersCapitalAccountByClassAxis
= dkl_SubordinatedUnitsMember
/ us-gaap_PartnerCapitalComponentsAxis
= us-gaap_LimitedPartnerMember

First target distribution [Member] | Maximum [Member]

Footnote [Abstract]

Distribution Payment Targets

$ 0.43125dkl_DistributionPaymentTargets
/ dkl_IncentiveDistributionByTargetAxis
= dkl_FirstTargetDistributionMember
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= us-gaap_MaximumMember

[1]	Adjusted to include the historical results of the El Dorado Terminal and Tank Assets. See Notes 1 and 3 for further discussion.
[2]	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 11 for further discussion related to IDRs.
[3]	The information presented includes the results of operations of the El Dorado Predecessor and the Tyler Predecessor
[4]	The information presented includes the results of operations of the El Dorado Predecessor.

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Total quarterly distribution payment target amount

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Aggregate amount of net income attributable to the partners, which excludes the amount of net income attributable to predecessor entities.

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Net Income Loss Per Limited Partner Unit Basic And Diluted Subordinated

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Number of subordinated units held by affiliates that are used in calculating basic and diluted earnings per limited partner unit.

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Distributions from earnings to the general partner of a partnership included in the consolidated financial statements.

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The total amount of distributions to limited partners.

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Per unit of ownership amount after tax of income (loss) available to limited partnership (LP) unit-holder and units that would have been outstanding assuming the issuance of limited partner units for dilutive potential units outstanding.

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Per unit of ownership amount after tax of income (loss) available to outstanding limited partnership (LP) unit-holder.

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