Summary of Quarterly Financial Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Sep. 28, 2013		Jun. 29, 2013		Mar. 30, 2013		Dec. 29, 2012		Sep. 29, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Sep. 28, 2013	Sep. 29, 2012	Sep. 24, 2011
Quarterly Financial Information [Line Items]
Net sales	$ 37,472		$ 35,323		$ 43,603		$ 54,512		$ 35,966		$ 35,023		$ 39,186		$ 46,333		$ 170,910	$ 156,508	$ 108,249
Gross margin	13,871		13,024		16,349		21,060		14,401		14,994		18,564		20,703		64,304	68,662	43,818
Net income	$ 7,512		$ 6,900		$ 9,547		$ 13,078		$ 8,223		$ 8,824		$ 11,622		$ 13,064		$ 37,037	$ 41,733	$ 25,922
Earnings per share:
Basic	$ 8.31	[1]	$ 7.51	[1]	$ 10.16	[1]	$ 13.93	[1]	$ 8.76	[1]	$ 9.42	[1]	$ 12.45	[1]	$ 14.03	[1]	$ 40.03	$ 44.64	$ 28.05
Diluted	$ 8.26	[1]	$ 7.47	[1]	$ 10.09	[1]	$ 13.81	[1]	$ 8.67	[1]	$ 9.32	[1]	$ 12.30	[1]	$ 13.87	[1]	$ 39.75	$ 44.15	$ 27.68

[1] Basic and diluted earnings per share are computed independently for each of the quarters presented. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted earnings per share.