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Major Customer (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	18.90%	33.20%
Delek US [Member] | Wholesale Marketing and Terminalling [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	20.90%
Entity-Wide Gross Margin, Major Customer, Percentage	51.20%	57.30%	58.00%
Delek US [Member] | Pipelines and terminals [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	88.70%
Entity-Wide Gross Margin, Major Customer, Percentage	88.70%	46.00%	100.00%
Susser [Member] | Wholesale Marketing and Terminalling [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	17.50%

X

- Definition

Entity-Wide Gross Margin, Major Customer, Percentage

+ References

No definition available.

+ Details

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

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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X

- Definition

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration