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v3.19.2

Related Party Transactions - Commercial Agreements (Details) $ in Millions |  | 6 Months Ended
--- | --- | ---
Mar. 01, 2018 USD ($) | Jun. 30, 2019 $ / bbl
Big Spring Pipeline, Storage And Throughput Facilities Agreement | Crude Oil Throughput |  |
Related Party Transaction [Line Items] |  |
Term of agreement |  | 10 years
Big Spring Pipeline, Storage And Throughput Facilities Agreement | Maximum | Crude Oil Throughput |  |
Related Party Transaction [Line Items] |  |
Throughput commitment tariff rate |  | 0.69
Big Spring Pipeline, Storage And Throughput Facilities Agreement | Minimum | Crude Oil Throughput |  |
Related Party Transaction [Line Items] |  |
Throughput commitment tariff rate |  | 0.05
Big Spring Asphalt Services Agreement |  |
Related Party Transaction [Line Items] |  |
Term of agreement |  | 10 years
Big Spring Asphalt Services Agreement | Storage, Throughput Facilities |  |
Related Party Transaction [Line Items] |  |
Throughput commitment tariff rate |  | 8.62
Big Spring Marketing Agreement |  |
Related Party Transaction [Line Items] |  |
Term of agreement |  | 10 years
Big Spring Marketing Agreement | Maximum | Crude Oil Throughput |  |
Related Party Transaction [Line Items] |  |
Throughput commitment tariff rate |  | 0.74
Big Spring Marketing Agreement | Minimum | Crude Oil Throughput |  |
Related Party Transaction [Line Items] |  |
Throughput commitment tariff rate |  | 0.52
Omnibus Agreement | Delek US and affiliates |  |
Related Party Transaction [Line Items] |  |
Related party annual service fee | $ | $ 3.9 |

X
- Definition Related Party Annual Service Fee + References No definition available. + Details
Name: | dkl_RelatedPartyAnnualServiceFee
Namespace Prefix: | dkl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The term of the agreement. Agreement could be a lease, debt, arrangement, services agreement or other arrangement. + References No definition available. + Details
Name: | dkl_TermOfAgreement
Namespace Prefix: | dkl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Throughput Commitment Tariff Rate + References No definition available. + Details
Name: | dkl_ThroughputCommitmentTariffRate
Namespace Prefix: | dkl_
Data Type: | us-types:perUnitItemType
Balance Type: | na
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_RelatedPartyTransactionAxis=dkl_BigSpringPipelineStorageAndThroughputFacilitiesAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=dkl_CrudeOilPipelineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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- Details
Name: | srt_ProductOrServiceAxis=dkl_StorageThroughputFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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