Summary Information by Operating Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 28, 2013	Dec. 29, 2012
Segment Reporting Information [Line Items]
Net sales	$ 57,594	$ 54,512
Operating income	17,463	17,210
Americas
Segment Reporting Information [Line Items]
Net sales	20,098	20,341
Operating income	7,266	7,349
Europe
Segment Reporting Information [Line Items]
Net sales	13,073	12,464
Operating income	4,576	4,409
Greater China
Segment Reporting Information [Line Items]
Net sales	8,844	6,830
Operating income	3,140	2,544
Japan
Segment Reporting Information [Line Items]
Net sales	4,948	4,443
Operating income	2,379	2,260
Rest of Asia Pacific
Segment Reporting Information [Line Items]
Net sales	3,633	3,993
Operating income	1,329	1,335
Retail
Segment Reporting Information [Line Items]
Net sales	6,998	6,441
Operating income	$ 1,744	$ 1,557