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Related Party Transactions - Throughput and Deficiency Agreement (Details) - Throughput and Deficiency Agreement - Delek US and affiliates $ in Millions | Mar. 31, 2020 USD ($) bbl / pure
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Related Party Transaction [Line Items] |
Shipments Committed On The Gathering System (in Bbd) | 120,000
Shipments Committed To Redelivery Point (in Bbd) | 50,000
Commitment To Connect Additional Receipt Points | $ 33.8
Return On The Actual Costs (in percent) | 12.50%
Collaborative Arrangement, Term | 10 years

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- Definition Collaborative Arrangement, Term + References No definition available. + Details
Name: | dk_CollaborativeArrangementTerm
Namespace Prefix: | dk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Commitment To Connect Additional Receipt Points + References No definition available. + Details
Name: | dk_CommitmentToConnectAdditionalReceiptPoints
Namespace Prefix: | dk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Return On The Actual Costs + References No definition available. + Details
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Namespace Prefix: | dk_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Shipments Committed On The Gathering System + References No definition available. + Details
Name: | dk_ShipmentsCommittedOnTheGatheringSystem
Namespace Prefix: | dk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Shipments Committed To Redelivery Point + References No definition available. + Details
Name: | dk_ShipmentsCommittedToRedeliveryPoint
Namespace Prefix: | dk_
Data Type: | xbrli:integerItemType
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_TypeOfArrangementAxis=dk_ThroughputandDeficiencyAgreementMember
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: |