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Composition of Certain Financial Statement Items Inventories (Details) (USD $)
In Millions, unless otherwise specified
Dec. 29, 2013
Sep. 29, 2013
Inventory, Net [Abstract]    
Raw materials $ 4 $ 2
Work-in-process 434 631
Finished goods 626 669
Inventories, net $ 1,064 $ 1,302