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Inventories (Tables)
9 Months Ended
Jun. 30, 2013
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories are stated at the lower of cost (using FIFO or average methods) or market (determined on the basis of estimated realizable values) and are summarized as follows (in millions):
 
June 30,
2013
 
September 30,
2012
Finished goods
$
163

 
$
185

Work in process
46

 
48

Raw materials, parts and supplies
202

 
205

Total
$
411

 
$
438