Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Components of property, plant and equipment

Depreciation is computed using the straight-line method over the following estimated useful lives:

Buildings and improvements:
Buildings and improvements	5 to 30 years
Leasehold improvements	1 to 20 years
Machinery and equipment:
Computer hardware	3 to 5 years
Computer software	3 to 10 years
Factory machinery and equipment	1 to 15 years
Research and development equipment	5 to 10 years
Vehicles	3 to 8 years

Components of Property, plant and equipment, net were as follows (in millions):

	As of December 31,
	2014			2013
Land	$	38.3		$	39.5
Buildings and improvements	215.0			202.5
Machinery and equipment	681.8			634.0
Capital leases	27.0			25.2
Construction in progress and equipment not yet in service	50.6			51.6
Total	1,012.7			952.8
Less accumulated depreciation	(654.1		)	(617.3		)
Property, plant and equipment, net	$	358.6		$	335.5