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Property, Plant and Equipment, net
12 Months Ended
Aug. 31, 2014
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):
 
2014
 
2013
Machinery and equipment
$
714,636

 
$
696,776

Land and improvements
261,447

 
251,793

Buildings and leasehold improvements
123,869

 
114,313

Office equipment
50,148

 
47,995

ERP systems
15,056

 
15,246

Construction in progress
18,149

 
36,292

Property, plant and equipment, gross
1,183,305

 
1,162,415

Less: accumulated depreciation
(659,872
)
 
(597,989
)
Property, plant and equipment, net
$
523,433

 
$
564,426


Depreciation expense for property, plant and equipment, which includes amortization expense for assets under capital leases, was $75 million, $78 million and $77 million for the years ended August 31, 2014, 2013 and 2012, respectively.