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Acquisitions from Third Parties (Details)
 0 Months Ended
Oct. 02, 2014
bbl
Oct. 24, 2013
bbl
Dec. 17, 2014
Frank Thompson Transport [Member]      
Business Acquisition [Line Items]      
Number of trucks acquired     120dkl_Numberoftrucksacquired
/ us-gaap_BusinessAcquisitionAxis
= dkl_FrankThompsonTransportMember
Number of trailers acquired     200dkl_Numberoftrailersacquired
/ us-gaap_BusinessAcquisitionAxis
= dkl_FrankThompsonTransportMember
Mount Pleasant Terminal [Member]      
Business Acquisition [Line Items]      
Storage capacity 200,000dkl_Storagecapacity
/ us-gaap_BusinessAcquisitionAxis
= dkl_MountPleasantTerminalMember		    
Greenville Terminal [Member]      
Business Acquisition [Line Items]      
Storage capacity 325,000dkl_Storagecapacity
/ us-gaap_BusinessAcquisitionAxis
= dkl_GreenvilleTerminalMember		    
North Little Rock Terminal      
Business Acquisition [Line Items]      
Storage capacity   140,000dkl_Storagecapacity
/ us-gaap_BusinessAcquisitionAxis
= dkl_NorthLittleRockTerminalMember		  
Total Throughput Capacity (bpd)   10,000dkl_TotalThroughputCapacity
/ us-gaap_BusinessAcquisitionAxis
= dkl_NorthLittleRockTerminalMember