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Commitments and Contingencies Contracts and Agreements (Details) | 12 Months Ended
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Dec. 31, 2012
Abilene Contract [Member] |
Long-term Purchase Commitment [Line Items] |
Maximum Purchases under Supply Contract | 20,350
Supply Contract Expiration Date | Dec. 31, 2017
East Houston Contract [Member] |
Long-term Purchase Commitment [Line Items] |
Maximum Purchases under Supply Contract | 7,000
Supply Contract Expiration Date | Dec. 15, 2015

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- Definition Maximum Purchases under Supply Contract + References No definition available. + Details
Name: | dkl_MaximumPurchasesUnderSupplyContract
Namespace Prefix: | dkl_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

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- Definition Supply Contract Expiration Date + References No definition available. + Details
Name: | dkl_SupplyContractExpirationDate
Namespace Prefix: | dkl_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LongTermPurchaseCommitmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration