Segment Data - PP&E (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 3,630.7	$ 3,630.7	$ 3,519.5
Less: accumulated depreciation	(1,268.1)	(1,268.1)	(1,152.3)
Property, plant and equipment, net	2,362.6	2,362.6	$ 2,367.2
Depreciation	64.5	131.1
Operating Segments | Refining
Segment Reporting Information [Line Items]
Property, plant and equipment	2,666.1	2,666.1
Less: accumulated depreciation	(898.6)	(898.6)
Property, plant and equipment, net	1,767.5	1,767.5
Depreciation	49.4	99.8
Operating Segments | Logistics
Segment Reporting Information [Line Items]
Property, plant and equipment	701.8	701.8
Less: accumulated depreciation	(247.1)	(247.1)
Property, plant and equipment, net	454.7	454.7
Depreciation	10.0	20.7
Operating Segments | Retail Segment
Segment Reporting Information [Line Items]
Property, plant and equipment	165.7	165.7
Less: accumulated depreciation	(54.4)	(54.4)
Property, plant and equipment, net	111.3	111.3
Depreciation	3.2	6.2
Corporate, Other and Eliminations
Segment Reporting Information [Line Items]
Property, plant and equipment	97.1	97.1
Less: accumulated depreciation	(68.0)	(68.0)
Property, plant and equipment, net	29.1	29.1
Depreciation	$ 1.9	$ 4.4