Property, Plant and Equipment, net (Tables)

6 Months Ended

Jun. 30, 2015

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment, net

Property, plant and equipment, net consisted of the following:

	June 30, 2015		December 31, 2014
	(in millions)
Land	$	1.6	$	1.6
Buildings and improvements	14.4		8.1
Machinery and equipment	530.0		401.4
Construction in progress	14.0		109.2
	560.0		520.3
Less: Accumulated depreciation and amortization	254.0		260.9
	$	306.0	$	259.4

Summary of plant turnaround activity

The following is a summary of plant turnaround activity:

	Six months ended   June 30,
	2015			2014
	(in millions)
Net capitalized turnaround costs:
Beginning balance	$	16.7		$	22.7
Additions	30.7			0.3
Depreciation	(5.0		)	(3.2		)
Ending balance	$	42.4		$	19.8