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Equity - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Aug. 13, 2020
Mar. 31, 2021
Dec. 31, 2020
Aug. 31, 2020
Common unitholders - public        
Class of Stock [Line Items]        
Common units outstanding (in shares)   8,697,468 8,697,468  
Common unitholders - Delek        
Class of Stock [Line Items]        
Common units outstanding (in shares)   34,745,868 34,745,868  
Limited Partner | Delek US        
Class of Stock [Line Items]        
Limited Partners Interest In Partnership, Shares       14,000,000.0
Limited Partner | Common unitholders - public        
Class of Stock [Line Items]        
Common units outstanding (in shares)   8,697,468    
Limited Partner | Common unitholders - Delek        
Class of Stock [Line Items]        
Common units outstanding (in shares)   34,745,868    
Delek US Holdings, Inc.        
Class of Stock [Line Items]        
Delek's limited partner ownership interest (as percent)   80.00%    
Delek US Holdings, Inc. | General Partnership        
Class of Stock [Line Items]        
Ownership Interest in General Partner (as percent) 100.00%      
Business Acquisition, Percentage of Voting Interests Acquired 5.20%      
Business Combination, Acquisition Related Costs $ 1.1