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Equity - Narrative (Details) - shares
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2020
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Delek US            
Class of Stock [Line Items]            
Ownership Interest in General Partner (as percent)   94.80%   94.80%    
Affiliates            
Class of Stock [Line Items]            
Ownership Interest in General Partner (as percent)   5.20%   5.20%    
Limited Partner | Common unitholders - public            
Class of Stock [Line Items]            
Common units outstanding (in shares)   8,687,371   8,687,371   9,131,579
Limited Partner | Common unitholders - Delek            
Class of Stock [Line Items]            
Common units outstanding (in shares)   20,745,868   20,745,868   15,294,046
General Partner            
Class of Stock [Line Items]            
General partner units outstanding (units)   600,678   600,678   498,482
Delek US Holdings, Inc.            
Class of Stock [Line Items]            
Delek's limited partner ownership interest (as percent)       69.10%    
General Partnership [Member]            
Class of Stock [Line Items]            
General partner's ownership interest (as percent)   2.00% 2.00% 2.00% 2.00%  
Delek US Holdings, Inc.            
Class of Stock [Line Items]            
Ownership Interest in General Partner (as percent)   0.20%   0.20%    
Big Spring Gathering Asset | Limited Partner            
Class of Stock [Line Items]            
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage 70.50%