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Equity Net income applicable to partners (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Equity [Abstract] |  |  |  |  |  |
Net income attributable to partners | $ 71,997 dkl_NetIncomeLossAttributableToPartners | [1] | $ 47,830 dkl_NetIncomeLossAttributableToPartners | [1] | $ 8,410 dkl_NetIncomeLossAttributableToPartners | [1]
Less: General partner's IDRs | (945)us-gaap_IncentiveDistributionDistributionPerYear |  | 0 us-gaap_IncentiveDistributionDistributionPerYear |  | 0 us-gaap_IncentiveDistributionDistributionPerYear |
Net income available to partners | 71,052 dkl_NetIncomeLossAvailableToGeneralAndLimitedPartners |  | 47,830 dkl_NetIncomeLossAvailableToGeneralAndLimitedPartners |  | 8,410 dkl_NetIncomeLossAvailableToGeneralAndLimitedPartners |
General partner's ownership interest | 2.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest |  | 2.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest |  | 2.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest |
General partner's allocated interest in net income | 1,421 dkl_NetIncomeLossAllocatedToGeneralPartnerExcludingIncentiveDistribution |  | 957 dkl_NetIncomeLossAllocatedToGeneralPartnerExcludingIncentiveDistribution |  | 168 dkl_NetIncomeLossAllocatedToGeneralPartnerExcludingIncentiveDistribution |
General partner's IDRs | 945 us-gaap_IncentiveDistributionDistributionPerYear |  | 0 us-gaap_IncentiveDistributionDistributionPerYear |  | 0 us-gaap_IncentiveDistributionDistributionPerYear |
Total general partner's interest in net income | $ 2,366 us-gaap_NetIncomeLossAllocatedToGeneralPartners |  | $ 957 us-gaap_NetIncomeLossAllocatedToGeneralPartners | [1] | $ 168 us-gaap_NetIncomeLossAllocatedToGeneralPartners | [1]
[1] | Adjusted to include the historical results of the El Dorado Terminal and Tank Assets. See Notes 1 and 3 for further discussion.

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- Definition Amount of net income allocated to the general partner, excluding incentive distribution rights. + References No definition available. + Details
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- Definition Aggregate amount of net income attributable to the partners, which excludes the amount of net income attributable to predecessor entities. + References No definition available. + Details
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- Definition Net income after adjustments for Incentive Distribution Rights of the general partner. + References No definition available. + Details
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- Definition Amount of incentive obligation paid in cash or stock during the period to a limited liability corporation managing member or limited partnership general partner. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
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- Definition Aggregate amount of net income allocated to general partners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section F + Details
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