Reconciliation of Segment Operating Income to Condensed Consolidated Financial Statements (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Share-based compensation expense	$ (578)	$ (448)	$ (1,698)	$ (1,292)
Other corporate expenses, net	(1,990)	(1,611)	(5,621)	(4,264)
Operating income	9,201	11,573	38,969	44,297
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	$ 11,769	$ 13,632	$ 46,288	$ 49,853