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Equity - Narrative (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Class of Stock [Line Items]          
General partner's ownership interest (as percent) 2.00% 2.00% 2.00% 2.00%  
Delek US          
Class of Stock [Line Items]          
Ownership Interest in General Partner (as percent) 94.60%   94.60%    
Affiliates          
Class of Stock [Line Items]          
Ownership Interest in General Partner (as percent) 5.40%   5.40%    
Limited Partner | Common unitholders - public          
Class of Stock [Line Items]          
Common units outstanding (in shares) 9,123,239   9,123,239   9,109,807
Limited Partner | Common unitholders - Delek          
Class of Stock [Line Items]          
Common units outstanding (in shares) 15,294,046   15,294,046   15,294,046
General Partner          
Class of Stock [Line Items]          
General partner units outstanding (units) 498,312   498,312   498,038
Delek US Holdings, Inc.          
Class of Stock [Line Items]          
Delek's limited partner ownership interest (as percent)     61.40%