Segment Data - PP&E (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 3,539.8	$ 3,362.8
Less: accumulated depreciation	(975.4)	(934.5)
Property, plant and equipment, net	2,564.4	$ 2,428.3
Depreciation	50.8
Operating Segments | Refining
Segment Reporting Information [Line Items]
Property, plant and equipment	2,601.8
Less: accumulated depreciation	(684.3)
Property, plant and equipment, net	1,917.5
Depreciation	35.6
Operating Segments | Logistics
Segment Reporting Information [Line Items]
Property, plant and equipment	665.7
Less: accumulated depreciation	(186.2)
Property, plant and equipment, net	479.5
Depreciation	6.3
Operating Segments | Retail
Segment Reporting Information [Line Items]
Property, plant and equipment	162.7
Less: accumulated depreciation	(39.4)
Property, plant and equipment, net	123.3
Depreciation	2.7
Consolidation, Eliminations
Segment Reporting Information [Line Items]
Property, plant and equipment, net	44.1
Corporate, Reconciling Items, And Eliminations [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment	109.6
Less: accumulated depreciation	(65.5)
Depreciation	$ 6.2