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Property, Plant and Equipment, net
12 Months Ended
Aug. 31, 2011
Property, Plant and Equipment, Net [Abstract] 
Property, Plant and Equipment, net
Property, Plant and Equipment, net
Property, plant and equipment, net consisted of the following as of August 31 (in thousands):
 
2011
 
2010
Machinery and equipment
$
640,573


 
$
533,373


Land and improvements
216,230


 
190,673


Buildings and leasehold improvements
85,131


 
62,663


Office equipment
40,580


 
32,380


ERP systems
14,087


 
13,773


Construction in progress
29,988


 
39,039


Property, plant and equipment, gross
1,026,589


 
871,901


Less: accumulated depreciation
(471,305
)
 
(411,091
)
Property, plant and equipment, net
$
555,284


 
$
460,810




Depreciation expense for property, plant and equipment, which includes amortization of assets under capital leases, was $68 million, $57 million and $56 million for the years ended August 31, 2011, 2010 and 2009, respectively.