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Organization and Basis of Presentation (Details)	0 Months Ended
	Feb. 10, 2014	Mar. 31, 2015 bbl
El Dorado [Member]
Business Acquisition [Line Items]
Number of Storage Tanks	158dkl_NumberofStorageTanks / us-gaap_BusinessAcquisitionAxis = dkl_ElDoradoTerminalandTanksMember
Tyler Crude Tank [Member]
Business Acquisition [Line Items]
Shell Capacity (barrels)		350,000dkl_AggregateShellCapacity / us-gaap_BusinessAcquisitionAxis = dkl_TylerCrudeTankMember
Light Crude Oil [Member] | El Dorado Offloading Racks [Member]
Business Acquisition [Line Items]
Throughput capacity (bpd)		25,000dkl_TotalThroughputCapacity / us-gaap_BusinessAcquisitionAxis = dkl_ElDoradoOffloadingRacksMember / us-gaap_ProductOrServiceAxis = dkl_LightCrudeOilMember
Heavy Crude Oil [Member] | El Dorado Offloading Racks [Member]
Business Acquisition [Line Items]
Throughput capacity (bpd)		12,000dkl_TotalThroughputCapacity / us-gaap_BusinessAcquisitionAxis = dkl_ElDoradoOffloadingRacksMember / us-gaap_ProductOrServiceAxis = dkl_HeavyCrudeOilMember

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- Definition

Aggregate Shell Capacity

+ References

No definition available.

+ Details

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

X

- Definition

Number of Storage Tanks

+ References

No definition available.

+ Details

Name:	dkl_NumberofStorageTanks
Namespace Prefix:	dkl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Total Throughput Capacity

+ References

No definition available.

+ Details

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

X

- Details

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

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=dkl_ElDoradoTerminalandTanksMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=dkl_TylerCrudeTankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=dkl_HeavyCrudeOilMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=dkl_LightCrudeOilMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: