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Equity - Narrative (Details) - shares | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Class of Stock [Line Items] |  |  |  |  |
Delek's limited partner ownership interest (as percent) |  |  | 61.40% |  |
General partner's ownership interest (as percent) | 2.00% | 2.00% | 2.00% | 2.00% |
General partner units outstanding (units) | 497,861 |  | 497,861 |  | 497,604
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% |  |
Common unitholders - public |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common units outstanding (in shares) | 9,101,137 |  | 9,101,137 |  | 9,088,587
Common unitholders - Delek |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common units outstanding (in shares) | 15,294,046 |  | 15,294,046 |  | 15,294,046

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