Property, Plant and Equipment (Notes)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Line Items]

Property, Plant and Equipment Disclosure [Text Block]

Property, Plant and Equipment

The following table summarizes the components of property, plant and equipment:

		December 31,
Classification	Estimated Useful Life	2017			2016
Land and buildings	20-35 years	$	231.4		$	163.0
Machinery and equipment	3-12 years	199.7			169.4
Computer equipment, furniture and fixtures	3-7 years	37.0			35.4
Construction in process		26.6			50.9
Total property, plant and equipment, gross		494.7			418.7
Less: accumulated depreciation		(197.1		)	(167.7		)
Total property, plant and equipment, net		$	297.6		$	251.0

Depreciation expense was $26.9, $25.6 and $28.1 for the years ended December 31, 2017, 2016 and 2015, respectively. Construction in progress included approximately $46.0 related to the plant expansion in Changzhou, China at December 31, 2016, the majority of which was placed in service during 2017.

See Note 3, Asset Impairments, for information regarding property, plant and equipment impaired in 2016 and 2015.