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Commitments and Contingencies Crude Oil Releases (Details) $ in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Nov. 30, 2018 bbl | Mar. 15, 2018 bbl | Feb. 28, 2018 bbl | Mar. 31, 2013 bbl
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Expense recorded, net of total reimbursable costs | $ 0.4 |  |  |  |  |  |
Smackover Release |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Barrels of crude oil released | bbl |  |  |  | 20 |  |  |
El Dorado Clean Harbors |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Barrels of crude oil released | bbl |  |  |  |  | 10 |  |
El Dorado February 2018 Release |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Barrels of crude oil released | bbl |  |  |  |  |  | 50 |
SALA Gathering System February 2018 Release - First |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Barrels of crude oil released | bbl |  |  |  |  |  | 250 |
Magnolia Station Spill |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Barrels of crude oil released | bbl |  |  |  |  |  |  | 5,900
Operating and maintenance expenses | Smackover Release |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Accrual for environmental loss contingencies | 1.5 |  |  |  |  |  |
Operating and maintenance expenses | Norphlet Release |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Accrual for environmental loss contingencies | 0.5 |  |  |  |  |  |
Delek US | Omnibus Agreement | Delek |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Recovery of direct costs | 9.8 |  |  |  |  |  |
Delek US | Operating and maintenance expenses | Omnibus Agreement | Delek |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Recovery of direct costs | 8.2 | $ 0.3 | $ 1.2 |  |  |  |
Other Current Liabilities | Magnolia Station Spill | Magnolia Station Spill |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Accrual for environmental loss contingencies | $ 2.2 |  |  |  |  |  |

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