Changes in Accrued Warranty and Related Costs (Detail) (USD $) In Millions	12 Months Ended
Sep. 24, 2011	Sep. 25, 2010	Sep. 26, 2009
Product Liability Contingency [Line Items]
Beginning accrued warranty and related costs	$ 761	$ 577	$ 671
Cost of warranty claims	(1,147)	(713)	(534)
Accruals for product warranty	1,626	897	440
Ending accrued warranty and related costs	$ 1,240	$ 761	$ 577

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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- Definition

Represents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Represents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period.

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