Segment Data - Total Assets By Segment (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total assets	$ 6,728.0	$ 6,134.1
Inter-segment right of use lease assets	208.5	182.0
Refining
Segment Reporting Information [Line Items]
Total assets	5,137.8	4,192.5
Logistics
Segment Reporting Information [Line Items]
Total assets	935.1	956.5
Retail
Segment Reporting Information [Line Items]
Total assets	247.9	258.9
Operating Segments | Refining
Segment Reporting Information [Line Items]
Total assets	6,434.3	5,848.9
Operating Segments | Logistics
Segment Reporting Information [Line Items]
Total assets	935.1	956.5
Operating Segments | Retail
Segment Reporting Information [Line Items]
Total assets	247.9	258.9
Corporate, Other and Eliminations
Segment Reporting Information [Line Items]
Total assets	(889.3)	(930.2)
Corporate, Other and Eliminations
Segment Reporting Information [Line Items]
Total assets	407.2	726.2
Intersegment Eliminations
Segment Reporting Information [Line Items]
Inter-segment notes receivable	(1,026.8)	(1,285.8)
Inter-segment right of use lease assets	(269.7)	(370.6)
Intersegment Eliminations | Refining
Segment Reporting Information [Line Items]
Inter-segment notes receivable	(1,026.8)	(1,285.8)
Inter-segment right of use lease assets	(269.7)	(370.6)
Intersegment Eliminations | Logistics
Segment Reporting Information [Line Items]
Inter-segment notes receivable	0.0	0.0
Inter-segment right of use lease assets	0.0	0.0
Intersegment Eliminations | Retail
Segment Reporting Information [Line Items]
Inter-segment notes receivable	0.0	0.0
Inter-segment right of use lease assets	$ 0.0	$ 0.0