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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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- Definition

Turnaround Costs

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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