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Equity Percentage Allocations of Available Cash from Operating Surplus (Details)	0 Months Ended	12 Months Ended
	Nov. 07, 2012	Dec. 31, 2012
Distribution Made to Member or Limited Partner [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	2.00%	2.00%
Minimum quarterly distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Distribution Payment Targets		0.37500
First target distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Distribution Payment Targets		above $0.37500 up to $0.43125
Second target distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Distribution Payment Targets		above $0.43125 up to $0.46875
Third target distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Distribution Payment Targets		above $0.46875 up to $0.56250
Thereafter [Member]
Distribution Made to Member or Limited Partner [Line Items]
Distribution Payment Targets		above $0.56250
Unitholders [Member] | Minimum quarterly distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Incentive Distribution Distribution Split Marginal Percentage		98.00%
Unitholders [Member] | First target distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Incentive Distribution Distribution Split Marginal Percentage		98.00%
Unitholders [Member] | Second target distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Incentive Distribution Distribution Split Marginal Percentage		85.00%
Unitholders [Member] | Third target distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Incentive Distribution Distribution Split Marginal Percentage		75.00%
Unitholders [Member] | Thereafter [Member]
Distribution Made to Member or Limited Partner [Line Items]
Incentive Distribution Distribution Split Marginal Percentage		50.00%
General Partner [Member] | Minimum quarterly distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Incentive Distribution Distribution Split Marginal Percentage		2.00%
General Partner [Member] | First target distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Incentive Distribution Distribution Split Marginal Percentage		2.00%
General Partner [Member] | Second target distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Incentive Distribution Distribution Split Marginal Percentage		15.00%
General Partner [Member] | Third target distribution [Member]
Distribution Made to Member or Limited Partner [Line Items]
Incentive Distribution Distribution Split Marginal Percentage		25.00%
General Partner [Member] | Thereafter [Member]
Distribution Made to Member or Limited Partner [Line Items]
Incentive Distribution Distribution Split Marginal Percentage		50.00%

X

- Definition

Distribution Payment Targets

+ References

No definition available.

+ Details

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X

- Definition

Percentage split between the limited partners' and general partner's interests in distributions.

+ References

No definition available.

+ Details

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Namespace Prefix:	dkl_
Data Type:	num:percentItemType
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Period Type:	duration

X

- Details

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X

- Definition

The number of units or percentage investment held by the managing member or general partner of the LLC or LP.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Practice Bulletin (PB)

-Number 14

-Paragraph 15

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-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

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