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Related Party Transactions - Other Agreements (Details) - USD ($) $ in Millions |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 13, 2020 | Mar. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Mar. 01, 2020 | Feb. 29, 2020
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Delek Holdings unit purchases from public |  |  |  | 0 |  |  |  |
Stock repurchased during period, value |  |  | $ 5.0 |  |  |  |  |
Big spring gathering assets acquisition equity |  |  |  | 5,000,000 |  |  |  |
Limited liability company or limited partnership, members or limited partners, ownership interest, shares |  |  |  | 34,700,000 |  |  |  |
Revolving Credit Facility | DKL Revolver | Fifth Third Bank | Line of Credit |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Cash consideration received | $ 45.0 |  |  |  |  |  |  |
Common- Delek | Limited Partner |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Delek Holdings unit purchases from public |  |  |  | (451,822) |  |  |  |
Big spring gathering assets acquisition equity |  |  |  | 5,000,000 |  |  |  |
Big Spring Gathering Asset |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Big spring gathering assets acquisition equity |  | 5,000,000.0 |  |  |  |  |  |
General Partnership |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
General partner economic interest, percent | 2.00% |  |  |  |  |  |  |
Delek US Holdings, Inc. |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Delek's limited partner interest |  |  |  | 80.00% |  |  |  |
Delek Logistics G P |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
General partner economic interest, percent | 2.00% |  |  |  |  |  |  |
Delek US Holdings, Inc. | General Partnership |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Business acquisition, percentage of voting interests acquired | 5.20% |  |  |  |  |  |  |
Delek's ownership interest in general partner | 100.00% |  |  |  |  |  |  |
Delek US Holdings, Inc. | Delek Logistics |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Business combination, consideration transferred equity interests issues and issuable, shares | 14,000,000.0 |  |  |  |  |  |  |
Delek |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Related party ownership percentage in company |  | 70.50% | 70.50% |  |  |  | 62.60% | 64.50%
Operating and maintenance expenses | Partnership Agreement | General Partner |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Payment for management fee |  |  |  | $ 29.4 | $ 25.0 | $ 21.1 |  |

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