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Net Property
9 Months Ended
Jun. 30, 2013
Property, Plant and Equipment [Abstract]  
Net Property
Net Property
     Net property is summarized as follows (in millions):
 
June 30,
2013
 
September 30,
2012
Property at cost:
 
 
 
Land and land improvements
$
35

 
$
39

Buildings
224

 
253

Machinery and equipment
899

 
909

Company-owned tooling
151

 
156

Construction in progress
37

 
65

Total
1,346

 
1,422

Less accumulated depreciation
(962
)
 
(1,005
)
Net property
$
384

 
$
417