Reconciliation of the Provision for Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 24, 2011
Income Taxes [Line Items]
Computed expected tax	$ 17,554	$ 19,517	$ 11,973
State taxes, net of federal effect	508	677	552
Indefinitely invested earnings of foreign subsidiaries	(4,614)	(5,895)	(3,898)
Research and development credit, net	(287)	(103)	(167)
Domestic production activities deduction	(308)	(328)	(168)
Other	265	162	(9)
Provision for income taxes	$ 13,118	$ 14,030	$ 8,283
Effective tax rate	26.20%	25.20%	24.20%