Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, plant and equipment, net
Increase (Decrease) in Capitalized Expenditures in Other Liabilities	$ (2.2)	$ 1.3	$ 4.3
Gross property, plant and equipment	572.5	520.3
Less: Accumulated depreciation and amortization	265.5	260.9
Net property, plant and equipment	307.0	259.4
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	2.0
Net capitalized turnaround costs:
Beginning balance	16.7	22.7	2.6
Additions	33.6	0.3	24.7
Depreciation	(12.5)	(6.3)	(4.6)
Ending balance	37.8	16.7	$ 22.7
Land
Property, plant and equipment, net
Gross property, plant and equipment	1.6	1.6
Buildings and improvements
Property, plant and equipment, net
Gross property, plant and equipment	14.5	8.1
Machinery and equipment
Property, plant and equipment, net
Gross property, plant and equipment	537.5	401.4
Construction in progress
Property, plant and equipment, net
Gross property, plant and equipment	$ 18.9	$ 109.2