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Property, Plant and Equipment, net
12 Months Ended
Aug. 31, 2013
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):
 
2013
 
2012
Machinery and equipment
$
696,776

 
$
671,615

Land and improvements
251,793

 
231,925

Buildings and leasehold improvements
114,313

 
91,411

Office equipment
47,995

 
43,240

ERP systems
15,246

 
15,246

Construction in progress
36,292

 
46,476

Property, plant and equipment, gross
1,162,415

 
1,099,913

Less: accumulated depreciation
(597,989
)
 
(535,728
)
Property, plant and equipment, net
$
564,426

 
$
564,185


Depreciation expense for property, plant and equipment, which includes amortization of assets under capital leases, was $78 million, $77 million and $68 million for the years ended August 31, 2013, 2012 and 2011, respectively.