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Related Party Transactions Omnibus Agreement (Details) (Omnibus Agreement [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
	Feb. 10, 2014	Jul. 26, 2013
Related Party Transaction [Line Items]
Omnibus Agreement Annual Amount	$ 3.3	$ 3.0
El Dorado Terminal and Tanks [Member]
Related Party Transaction [Line Items]
Annual Maximum Tank Repair and Maintenance Expense	$ 0.5

X

- Definition

Annual Maximum Tank Repair and Maintenance Expense

+ References

No definition available.

+ Details

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Namespace Prefix:	dkl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Omnibus Agreement Annual Amount

+ References

No definition available.

+ Details

Name:	dkl_OmnibusAgreementAnnualAmount
Namespace Prefix:	dkl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration