Reconciliation of Segment Operating Income and Assets to the Consolidated Financial Statements (Detail) (USD $) In Millions	12 Months Ended
	Sep. 24, 2011		Sep. 25, 2010		Sep. 26, 2009
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Other corporate expenses, net	$ (5,520)	[1]	$ (3,707)	[1]	$ (2,242)	[1]
Share-based compensation expense	(1,168)		(879)		(710)
Operating income	33,790		18,385		11,740
Total assets	116,371		75,183		47,501
Depreciation, amortization and accretion	1,814		1,027		734
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	40,478		22,971		14,692
Total assets	12,449		9,177		5,604
Depreciation, amortization and accretion	253		190		170
Corporate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total assets	103,922		66,006		41,897
Depreciation, amortization and accretion	$ 1,561		$ 837		$ 564

[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.