Summary Information by Operating Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013	Mar. 31, 2012
Segment Reporting Information [Line Items]
Net sales	$ 43,603	$ 39,186	$ 98,115	$ 85,519
Operating income	12,558	15,384	29,768	32,724
Americas
Segment Reporting Information [Line Items]
Net sales	14,052	13,182	34,393	30,896
Operating income	5,148	5,688	12,497	12,921
Europe
Segment Reporting Information [Line Items]
Net sales	9,800	8,807	22,264	20,063
Operating income	3,449	3,942	7,858	8,605
Greater China
Segment Reporting Information [Line Items]
Net sales	8,213	7,637	15,043	11,717
Operating income	2,787	3,781	5,331	5,487
Japan
Segment Reporting Information [Line Items]
Net sales	3,135	2,645	7,578	6,195
Operating income	1,555	1,543	3,815	3,532
Rest of Asia Pacific
Segment Reporting Information [Line Items]
Net sales	3,162	2,516	7,155	6,133
Operating income	1,034	1,078	2,369	2,671
Retail
Segment Reporting Information [Line Items]
Net sales	5,241	4,399	11,682	10,515
Operating income	$ 1,092	$ 1,154	$ 2,649	$ 3,005