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Related Party Transactions Omnibus Agreement (Details) - USD ($) $ in Millions | Apr. 01, 2015 | Mar. 31, 2015 | Feb. 26, 2014
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Related Party Transaction [Line Items] |  |  |
Deductible amount to reimburse the Partnership with respect to certain asset failures | $ 1.0 |  |
Delek [Member] | Omnibus Agreement [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Omnibus Agreement Annual Amount |  | $ 3.4 | $ 3.3

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- Definition Deductible amount to reimburse the Partnership with respect to certain asset failures + References No definition available. + Details
Name: | dkl_DeductibleamounttoreimbursethePartnershipwithrespecttocertainassetfailures
Namespace Prefix: | dkl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Omnibus Agreement Annual Amount + References No definition available. + Details
Name: | dkl_OmnibusAgreementAnnualAmount
Namespace Prefix: | dkl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=dkl_DelekUsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=dkl_OmnibusAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |