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Accounting Policies Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2012
Intangible Assets [Abstract]
Intangible assets estimated useful life	11.5

X

- Details

Name:	dkl_IntangibleAssetsAbstract
Namespace Prefix:	dkl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Describes the periods of time over which an entity anticipates to receive utility from its other intangible assets.

+ References

No definition available.

+ Details

Name:	dkl_IntangibleAssetsEstimatedUsefulLife
Namespace Prefix:	dkl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration