XML 67 R44.htm IDEA: XBRL DOCUMENT v3.21.2

Net Income Per Unit - Narrative (Details) - shares shares in Millions			3 Months Ended		6 Months Ended
	Aug. 12, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
General Partnership
General partner's ownership interest (as percent)	2.00%		0.00%	2.00%	0.00%	2.00%
Big Spring Gathering Asset
Asset Acquisition, Equity Interest Transfered As Consideration, Shares		5.0

X

- Definition

Asset Acquisition, Equity Interest Transfered As Consideration, Shares

+ References

No definition available.

+ Details

Name:	dkl_AssetAcquisitionEquityInterestTransferedAsConsiderationShares
Namespace Prefix:	dkl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_OwnershipAxis=dkl_GeneralPartnershipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dkl_AssetAcquisitionAxis=dkl_BigSpringGatheringAssetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: