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Detail of Certain Balance Sheet Accounts - Current Receivables (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 28, 2013
Sep. 29, 2012
Current receivables    
Accounts receivable $ 6,694 $ 6,313
Other 428 388
Allowance for doubtful accounts (155) (161)
Current receivables, Net $ 6,967 $ 6,540