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Inventories
9 Months Ended
Jun. 30, 2015
Inventory Disclosure [Abstract]  
Inventories
Inventories
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,
2015
 
September 30,
2014
Finished goods
$
136

 
$
146

Work in process
31

 
36

Raw materials, parts and supplies
198

 
197

Total
$
365

 
$
379