Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 24, 2011	Sep. 25, 2010
Income Taxes [Line Items]
Foreign pretax earnings	$ 30,500,000,000	$ 36,800,000,000	$ 24,000,000,000
Statutory tax rate in foreign operations	12.50%
Undistributed earnings of foreign subsidiaries	54,400,000,000
Deferred tax liability related to foreign earnings that may be repatriated	18,400,000,000
Cash, cash equivalents and marketable securities held by foreign subsidiaries	111,300,000,000	82,600,000,000
Reconciliation of provision for income taxes, statutory federal income tax rate	35.00%	35.00%	35.00%
Tax benefits from equity awards	643,000,000	1,400,000,000	1,100,000,000
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%
Gross unrecognized tax benefits	2,714,000,000	2,062,000,000	1,375,000,000	943,000,000
Unrecognized tax benefits that would affect effective tax rate, if recognized	1,400,000,000	889,000,000
Unrecognized tax benefits, gross interest and penalties accrued	590,000,000	401,000,000
Recognized interest and penalty expense of tax matters	189,000,000	140,000,000	14,000,000
Reasonably possible reduction in unrecognized tax benefits in the next 12 months, minimum	125,000,000
Reasonably possible reduction in unrecognized tax benefits in the next 12 months, maximum	$ 225,000,000