Reconciliation of Segment Operating Income to Consolidated Financial Statements (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 29, 2012		Sep. 24, 2011		Sep. 25, 2010
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Other corporate expenses, net	$ (6,635)	[1]	$ (5,418)	[1]	$ (3,632)	[1]
Share-based compensation expense	(1,740)		(1,168)		(879)
Operating income	55,241		33,790		18,385
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	$ 63,616		$ 40,376		$ 22,896

[1] Other corporate expenses include research and development, corporate marketing expenses, manufacturing costs and variances not included in standard costs, and other separately managed general and administrative expenses.