XML 73 R55.htm IDEA: XBRL DOCUMENT
v3.22.1

Commitments and Contingencies - Other Commitments (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
--- | --- | --- | ---
Connector Construction Provisions |  |  |
Loss Contingencies [Line Items] |  |  |
Other commitment | $ 4.2 | $ 28.4 | $ 33.8
Incidental Connector Construction Provisions |  |  |
Loss Contingencies [Line Items] |  |  |
Other commitment | $ 45.8 |  |

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
- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=dkl_ConnectorConstructionProvisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=dkl_IncidentalConnectorConstructionProvisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |