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

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

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- 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