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Inventory
6 Months Ended
Mar. 25, 2016
Inventory Disclosure [Abstract]  
Inventory
Inventory
Inventories consisted of the following ($ in millions):
 
As of
 
March 25,
2016
 
September 25,
2015
Purchased materials and manufactured parts
$
183

 
$
165

Work in process
77

 
84

Finished goods
410

 
375

Inventories
$
670

 
$
624


Inventories are recorded at the lower of cost (primarily first-in, first-out) or market value.