Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
Sep. 24, 2011	Sep. 25, 2010	Sep. 26, 2009
Income Taxes [Line Items]
Foreign pretax earnings	$ 24,000,000,000	$ 13,000,000,000	$ 6,600,000,000
Reconciliation of provision for income taxes, statutory federal income tax rate	35.00%	35.00%	35.00%
Tax benefits from employee stock plan awards	1,100,000,000	742,000,000	246,000,000
Recognized interest (benefit) expense of tax matters	14,000,000	(43,000,000)	64,000,000
Undistributed earnings of foreign subsidiaries	23,400,000,000
Cash, cash equivalents and marketable securities held by foreign subsidiaries	54,300,000,000	30,800,000,000
Gross unrecognized tax benefits	1,400,000,000	943,000,000
Unrecognized tax benefits that would affect the effective tax rate	563,000,000	404,000,000
Unrecognized tax benefits, gross interest and penalties accrued	261,000,000	247,000,000
Deferred tax liability related to foreign earnings that may be repatriated	$ 8,000,000,000
Measurement of tax position, minimum likelihood of tax benefits being realized upon the ultimate settlement	Greater than 50%
Measurement of tax position, minimum likelihood of tax benefits being realized upon the ultimate settlement, percentage	50.00%

Cash, cash equivalents and marketable securities held by foreign subsidiaries.

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The amount of unrecognized deferred tax liability related to foreign earnings that may be repatriated.

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Income Taxes [Line Items]

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- Definition

Income Tax Examination, Interest Expense Benefit

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Income Tax Examination Minimum Likelihood of Tax Benefits Being Realized Upon Settlement

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Percentage Of Income Tax Examination Minimum Likelihood of Tax Benefits Being Realized Upon Settlement

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- Definition

Tax benefit associated with any share-based compensation plan other than an employee stock ownership plan (ESOP). The tax benefit results from the deduction by the entity on its tax return for an award of stock that exceeds the cumulative compensation cost for common stock or preferred stock recognized for financial reporting. Includes any resulting tax benefit that exceeds the previously recognized deferred tax asset (excess tax benefits).

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Undistributed earnings of foreign subsidiaries

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- Definition

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section S99

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-Subparagraph (SAB TOPIC 6.I)

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-Name Statement of Financial Accounting Standard (FAS)

-Number 109

-Paragraph 47

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 4

-Section 08

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-Subparagraph (SX 210.4-08.(h)(1)(i))

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- Definition

The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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-Glossary Unrecognized Tax Benefit

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- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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