Property and Equipment (Tables)

12 Months Ended

May 31, 2012

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

(In thousands)	2012		2011
Land	$	104,850	$	103,838
Buildings and improvements	492,293		484,254
Equipment	1,478,270		1,334,943
Leasehold improvements	25,502		21,763
Construction in progress	62,370		97,598
	2,163,285		2,042,396
Less: accumulated depreciation	1,218,980		1,096,178
	$	944,305	$	946,218