Property, Plant and Equipment

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

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

		December 31,
Classification	Estimated Useful Life	2019			2018
Land and buildings	20-35 years	$	329.7		$	287.0
Machinery and equipment	3-12 years	208.2			214.7
Computer equipment, furniture and fixtures	3-7 years	47.7			38.5
Right-of-use assets		42.4			—
Construction in process		21.4			30.9
Total property, plant and equipment, gross		649.4			571.1
Less: accumulated depreciation		(244.8		)	(210.0		)
Total property, plant and equipment, net		$	404.6		$	361.1

Depreciation expense was $39.0, $28.9 and $25.3 for the years ended December 31, 2019, 2018 and 2017, respectively.