Segment Data PP&E (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Property, plant and equipment	$ 1,619.1	$ 1,619.1	$ 1,587.6
Less: accumulated depreciation	(540.5)	(540.5)	(484.3)
Property, plant and equipment, net	1,078.6	1,078.6	$ 1,103.3
Depreciation expense	29.3	57.9
Operating Segments [Member] | Refining [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment	1,223.0	1,223.0
Less: accumulated depreciation	(412.1)	(412.1)
Property, plant and equipment, net	810.9	810.9
Depreciation expense	21.8	43.6
Operating Segments [Member] | Logistics [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment	347.3	347.3
Less: accumulated depreciation	(101.7)	(101.7)
Property, plant and equipment, net	245.6	245.6
Depreciation expense	5.5	10.4
Corporate, other and eliminations [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment	48.8	48.8
Less: accumulated depreciation	(26.7)	(26.7)
Property, plant and equipment, net	22.1	22.1
Depreciation expense	$ 2.0	$ 3.9