Shareholders' Equity and Share-based Compensation - Additional Information (Detail) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2011 Year	Dec. 25, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, shares authorized	5
Fair value of vested RSUs as of the vesting date	$ 1,000,000,000	$ 659,000,000
Total intrinsic value of options at the time of exercise	457,000,000	944,000,000
Weighted-average fair value of stock purchase rights per share	$ 88.72	$ 61.22
Income tax benefit related to share-based compensation expense	145,000,000	96,000,000
Total unrecognized compensation cost on stock options and RSUs expected to vest	$ 4,400,000,000
Total unrecognized compensation cost on stock options and RSUs expected to vest, weighted-average recognition period (in years)	3.74
Shares reserved for future issuance under Employee Benefit Plans (in shares)	39.8