Reconciliation of Segment Operating Income to the Condensed Consolidated Financial Statements (Detail) (USD $) In Millions	3 Months Ended				9 Months Ended
	Jun. 25, 2011		Jun. 26, 2010		Jun. 25, 2011		Jun. 26, 2010
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Stock-based compensation expense	$ (284)		$ (219)		$ (870)		$ (655)
Other corporate expenses, net	(1,385)	[1]	(999)	[1]	(4,244)	[1]	(2,531)	[1]
Operating income	9,379		4,234		25,080		12,938
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	$ 11,048		$ 5,452		$ 30,194		$ 16,124

[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, including certain corporate expenses associated with support of the Retail segment.