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Inventories
6 Months Ended
Mar. 31, 2014
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):
 
March 31,
2014
 
September 30,
2013
Finished goods
$
190

 
$
184

Work in process
38

 
32

Raw materials, parts and supplies
208

 
198

Inventories
$
436

 
$
414