Shareholders' Equity and Share-based Compensation - Additional Information (Detail) (USD $)	12 Months Ended
	Sep. 24, 2011 Year Contract Country Store Vendor	Sep. 25, 2010	Sep. 26, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, shares authorized	5,000,000
Change in fair value of available-for-sale securities, net of tax	$ (41,000,000)	$ 123,000,000	$ 118,000,000
Change in unrealized gain (loss) on available-for-sale securities, tax	24,000,000	(72,000,000)	(78,000,000)
Change in fair value of derivatives, tax	(50,000,000)	97,000,000	(135,000,000)
Derivative gains (losses) reclassified from other comprehensive income to net income, tax	(250,000,000)	43,000,000	149,000,000
Maximum portion of pre-tax earnings under Savings Plan that can be deferred by participating U.S. employees	16,500
Employer contribution to Savings Plan	90,000,000	72,000,000	59,000,000
Fair value of vested RSUs as of the vesting date	1,500,000,000	1,000,000,000	221,000,000
The total shares withheld upon vesting of RSUs	1,600,000	1,800,000	707,000
Taxes paid related to net share settlement of equity awards	520,000,000	406,000,000	82,000,000
Total intrinsic value of options at the time of exercise	2,600,000,000	2,000,000,000	827,000,000
Weighted-average fair value of stock purchase rights per share	$ 71.47	$ 45.03	$ 30.62
Income tax benefit related to share-based compensation expense	467,000,000	314,000,000	266,000,000
Total unrecognized compensation cost on stock options and RSUs	2,600,000,000
Total unrecognized compensation cost on stock options and RSUs, weighted-average recognition period (in years)	3.7
Employee common stock purchases through payroll deductions, price as a percentage of fair market value	85.00%
Options granted	1,000	34,000	234,000
Stock option, granted share (whole number)	1,370	34,000	234,000
Weighted-average grant date fair value	$ 181.13	$ 108.58	$ 46.71
Minimum | Employee Stock Plan, 2003 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration term of options granted under Employee Benefit Plans	7 years
RSUs granted vesting period	2 years
Maximum | Employee Stock Plan, 2003 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration term of options granted under Employee Benefit Plans	10 years
RSUs granted vesting period	4 years
Employee Stock Plan, 2003 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted exercisable period	4 years
Shares reserved for future issuance under Employee Benefit Plans (in shares)	50,800,000
Directors Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance under Employee Benefit Plans (in shares)	190,000
Share based compensation, expiration date	2019-11-09
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance under Employee Benefit Plans (in shares)	3,100,000
Employee stock purchase plan offering period	6 months
Percentage of employee's payroll deductions under employee compensation, maximum	10.00%
Business Combinations
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted		98,000
Weighted-average grant date fair value		$ 216.82
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Rate of contribution to Savings Plan as a percentage of employees contribution	50.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase program authorized amount	$ 25,000
Rate of contribution to Savings Plan as a percentage of employees contribution	100.00%
Rate of contribution to Savings Plan as a percentage of employees earning	6.00%