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Financial Instruments - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 9 Months Ended 12 Months Ended
Jun. 30, 2012
Vendor
Sep. 24, 2011
Vendor
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Maturities of long-term marketable securities, minimum 1 year  
Maturities of long-term marketable securities, maximum 5 years  
Range of time hedged in cash flow hedge The Company typically hedges portions of its forecasted foreign currency exposure associated with revenue and inventory purchases generally up to six months.  
Net deferred gain associated with cash flow hedges $ 201 $ 290
Hedged transactions, expected occurrence 6 months  
Cash collateral received, derivative instruments $ 492 $ 288
Customers representing a significant portion of trade receivables, description There were no customers that accounted for 10% or more of the Company’s trade receivables as of June 30, 2012 and September 24, 2011, respectively. There were no customers that accounted for 10% or more of the Company’s trade receivables as of June 30, 2012 and September 24, 2011, respectively.
Number of vendors representing a significant portion of non-trade receivables 2 2
Total Cellular Network Carriers
    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Trade receivables from customer, percentage of total trade receivables 47.00% 52.00%
Vendor One
    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Vendor non-trade receivables, as percentage of total non-trade receivable 56.00% 53.00%
Vendor Two
    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Vendor non-trade receivables, as percentage of total non-trade receivable 26.00% 29.00%