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Selected Quarterly Financial Information (unaudited) - Factors Impacting the Comparability of Quarterly Results of Operations (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Unusual or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Turnaround costs |  |  |  |  |  |  | $ 83.0 | $ 38.1 | $ 109.2
Wynnewood refinery |  |  |  |  |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Turnaround costs | $ 43.0 | $ 21.7 | $ 2.7 | $ 13.0 |  |  | 80.4 | 0.0 | 0.0
Coffeyville refinery |  |  |  |  |  |  |  |  |
Unusual or Infrequent Item [Line Items] |  |  |  |  |  |  |  |  |
Turnaround costs |  |  |  |  | $ 2.1 | $ 29.4 | $ 0.0 | $ 31.5 | $ 102.2

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- Details
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