Property, Plant and Equipment (Tables)

6 Months Ended

Nov. 30, 2014

Property, Plant and Equipment [Abstract]

Useful Lives of Property, Plant and Equipment

Useful lives by major product category consisted of the following:

	Useful life
Land improvements	20 years
Buildings and leasehold improvements	30 years
Machinery and equipment	5-10 years
Instruments	4 years

Components of Property, Plant and Equipment

Property, plant and equipment consisted of the following:

(in millions)	November 30, 2014			May 31, 2014
Land and land improvements	$	40.4		$	40.8
Buildings and leasehold improvements	124.5			126.8
Machinery and equipment	431.2			414.5
Instruments	814.2			791.9
Construction in progress	36.1			47.9
Total property, plant and equipment	1,446.4			1,421.9
Accumulated depreciation	(726.4		)	(705.9		)
Total property, plant and equipment, net	$	720.0		$	716.0