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Related Party Transactions Other Agreements (Details) (USD $)	12 Months Ended
	Dec. 31, 2012
Related Party Transaction [Line Items]
Monthly Capacity Fee Revenue, Amount Received	$ 229,000
Minimum [Member]
Related Party Transaction [Line Items]
Monthly Capacity Fee Revenue Amount	450,000
Maximum [Member]
Related Party Transaction [Line Items]
Monthly Capacity Fee Revenue Amount	$ 529,250

X

- Definition

Monthly Capacity Fee Revenue Amount

+ References

No definition available.

+ Details

Name:	dkl_MonthlyCapacityFeeRevenueAmount
Namespace Prefix:	dkl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Monthly Capacity Fee Revenue, Amount Received

+ References

No definition available.

+ Details

Name:	dkl_MonthlyCapacityFeeRevenueAmountReceived
Namespace Prefix:	dkl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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