XML 82 R61.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments and Contingencies - Crude Oil Releases (Details) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | Feb. 28, 2018 bbl | Mar. 31, 2013 bbl
Loss Contingencies [Line Items] |  |  |  |  |
Accrual for environmental loss contingencies, period increase (decrease) | $ 0.3 | $ 0.1 | $ 0.4 |  |
Accrual for environmental loss contingencies, expected reimbursements |  | 7.8 |  |  |
SALA Gathering System February 2018 Release - First |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Crude oil released (in barrels) | bbl |  |  |  | 203 |
Magnolia Release |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Crude oil released (in barrels) | bbl |  |  |  |  | 5,900
Magnolia Release | Other Current Liabilities [Member] | Magnolia Release |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Accrual for environmental loss contingencies |  | $ 1.0 |  |  |

X
- Definition Accrual for Environmental Loss Contingencies, Expected Reimbursements + References No definition available. + Details
Name: | dkl_AccrualforEnvironmentalLossContingenciesExpectedReimbursements
Namespace Prefix: | dkl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Barrels of crude oil released + References No definition available. + Details
Name: | dkl_Barrelsofcrudeoilreleased
Namespace Prefix: | dkl_
Data Type: | num:volumeItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 + Details
Name: | us-gaap_AccrualForEnvironmentalLossContingencies
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Increase (decrease) in the accrual for environmental loss contingencies during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q2) -URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751 + Details
Name: | us-gaap_AccrualForEnvironmentalLossContingenciesPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- 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_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=dkl_SALAGatheringSystemFebruary2018ReleaseFirstMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=dkl_MagnoliaStationSpillMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EnvironmentalRemediationContingencyAxis=dkl_MagnoliaStationSpillMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |