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v3.20.4

Commitments and Contingencies - Crude Oil Releases (Details) $ in Millions |  | 12 Months Ended
--- | --- | ---
Nov. 20, 2019 USD ($) | Dec. 31, 2020 USD ($) crudeOilRelease | Dec. 31, 2019 USD ($) crudeOilRelease | Dec. 31, 2018 USD ($)
Loss Contingencies [Line Items] |  |  |  |
Number of crude oil releases | crudeOilRelease |  | 0 | 5 |
Environmental exit costs, costs accrued to date |  | $ 0.5 | $ 7.1 |
Expense recorded, net of total reimbursable costs |  | 0.1 | 0.4 |
Operating and maintenance expenses |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Accrual for environmental loss contingencies |  | 0.3 |  |
Delek US | Omnibus Agreement | Delek |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Recovery of direct costs |  | 0.1 | 4.8 |
Delek US | Operating and maintenance expenses | Omnibus Agreement | Delek |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Recovery of direct costs |  | $ 0.1 | 6.3 | $ 8.2
Other Current Liabilities | Magnolia Station Spill | Magnolia Station Spill |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Accrual for environmental loss contingencies |  |  |  | $ 2.2
State of Arkansas | Other Current Liabilities | Magnolia Station Spill | Magnolia Station Spill |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Environmental remediation expense | $ 0.6 |  |  |
DOJ | Other Current Liabilities | Magnolia Station Spill | Magnolia Station Spill |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Environmental remediation expense |  |  | $ 1.7 |

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