Stock Option Activity and Related Information (Detail) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 24, 2011
Number of Options
Beginning Balance	6,545	11,866	21,725
Options granted	8		1
Options assumed	29	41
Options cancelled	(8)	(25)	(163)
Options exercised	(2,480)	(5,337)	(9,697)
Ending Balance	4,094	6,545	11,866
Exercisable at end of the period	4,072
Expected to vest after end of the period	22
Weighted-Average Exercise Price
Beginning Balance	$ 127.56	$ 108.64	$ 90.46
Options granted	$ 30.36		$ 342.62
Options assumed	$ 210.08	$ 30.86
Options cancelled	$ 108.87	$ 103.22	$ 128.42
Options exercised	$ 108.33	$ 84.85	$ 67.63
Ending Balance	$ 139.65	$ 127.56	$ 108.64
Exercisable at end of the period	$ 140.07
Expected to vest after end of the period	$ 61.93
Weighted - Average Remaining Contractual Term (in years)
Ending Balance (in years)	1 year 1 month 6 days
Exercisable at end of the period (in years)	1 year
Expected to vest after end of the period (in years)	7 years 9 months 18 days
Aggregate Intrinsic Value
Ending Balance	$ 1,405
Exercisable at end of the period	1,396
Expected to vest after end of the period	$ 9