Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment, net

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

	December 31,
	2016		2015
	(in millions)
Land	$	1.4	$	1.6
Buildings and improvements	16.7		14.5
Machinery and equipment	562.3		537.5
Construction in progress	21.9		18.9
Property, plant and equipment	602.3		572.5
Less: Accumulated depreciation and amortization	301.0		265.5
Property, plant and equipment—net	$	301.3	$	307.0

Summary of plant turnaround activity

The following is a summary of capitalized plant turnaround costs:

	Year ended December 31,
	2016			2015			2014
	(in millions)
Net capitalized turnaround costs:
Beginning balance	$	37.8		$	16.7		$	22.7
Additions	4.9			33.6			0.3
Depreciation	(16.1		)	(12.5		)	(6.3		)
Ending balance	$	26.6		$	37.8		$	16.7