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Commitments and Contingencies Contracts and Agreements (Details)	12 Months Ended
	Dec. 31, 2012
Abilene Contract [Member]
Long-term Purchase Commitment [Line Items]
Maximum Purchases under Supply Contract	20,350
Supply Contract Expiration Date	Dec. 31, 2017
East Houston Contract [Member]
Long-term Purchase Commitment [Line Items]
Maximum Purchases under Supply Contract	7,000
Supply Contract Expiration Date	Dec. 15, 2015

X

- Definition

Maximum Purchases under Supply Contract

+ References

No definition available.

+ Details

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Namespace Prefix:	dkl_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Supply Contract Expiration Date

+ References

No definition available.

+ Details

Name:	dkl_SupplyContractExpirationDate
Namespace Prefix:	dkl_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Details

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