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Equity - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 13, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Aug. 31, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |  |  |  |  |
General partner units outstanding (units) |  | 0 |  | 0 |  |  | 498,482
Common unitholders - public |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Common units outstanding (in shares) |  | 8,687,371 |  | 8,687,371 |  |  | 9,131,579
Common unitholders - Delek |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Common units outstanding (in shares) |  | 34,745,868 |  | 34,745,868 |  |  | 15,294,046
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) |  | 8,687,371 |  | 8,687,371 |  |  |
Limited Partner | Common unitholders - Delek |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Common units outstanding (in shares) |  | 34,745,868 |  | 34,745,868 |  |  |
Delek US Holdings, Inc. |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Delek's limited partner ownership interest (as percent) |  |  |  | 80.00% |  |  |
General Partnership |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
General partner's ownership interest (as percent) |  | 0.00% | 2.00% | 2.00% | 2.00% |  |
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 |  |  |  |  |  |

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