Property, Plant and Equipment, net (Tables)

6 Months Ended

Jun. 30, 2017

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment, net

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

	June 30, 2017		December 31, 2016
	(in millions)
Land	$	1.4	$	1.4
Buildings and improvements	16.9		16.7
Machinery and equipment	569.1		562.3
Construction in progress	30.3		21.9
Property, plant and equipment	617.7		602.3
Less: Accumulated depreciation and amortization	320.2		301.0
Property, plant and equipment—net	$	297.5	$	301.3

Summary of plant turnaround activity

The following is a summary of capitalized plant turnaround costs:

	Six months ended   June 30,
	2017			2016
	(in millions)
Net capitalized turnaround costs:
Beginning balance	$	26.6		$	37.8
Additions	1.5			2.1
Depreciation	(8.1		)	(7.5		)
Ending balance	$	20.0		$	32.4