XML 52 R31.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Acquisitions - Narrative (Details) - Big Spring Pipeline [Member] $ in Millions | Sep. 15, 2017 USD ($) mi
--- | ---
Schedule of Asset Acquisitions, by Acquisition [Line Items] |
Length of pipeline (in miles) | mi | 40
Consideration transferred | $ | $ 9.0

X
- Definition Asset Acquisition, Consideration Transferred + References No definition available. + Details
Name: | dkl_AssetAcquisitionConsiderationTransferred
Namespace Prefix: | dkl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Length of Pipeline + References No definition available. + Details
Name: | dkl_LengthofPipeline
Namespace Prefix: | dkl_
Data Type: | num:lengthItemType
Balance Type: | na
Period Type: | instant

X
- Definition [Line Items] for Schedule of Asset Acquisitions, by Acquisition [Table] + References No definition available. + Details
Name: | dkl_ScheduleofAssetAcquisitionsbyAcquisitionLineItems
Namespace Prefix: | dkl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dkl_AssetAcquisitionAxis=dkl_BigSpringPipelineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |