Summary Information by Operating Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2011	Dec. 25, 2010
Segment Reporting Information [Line Items]
Net sales	$ 46,333	$ 26,741
Operating income	17,340	7,827
Americas
Segment Reporting Information [Line Items]
Net sales	17,714	9,218
Operating income	7,261	2,899
Europe
Segment Reporting Information [Line Items]
Net sales	11,256	7,256
Operating income	4,668	2,756
Japan
Segment Reporting Information [Line Items]
Net sales	3,550	1,433
Operating income	1,997	572
Asia-Pacific
Segment Reporting Information [Line Items]
Net sales	7,697	4,987
Operating income	3,304	2,042
Retail
Segment Reporting Information [Line Items]
Net sales	6,116	3,847
Operating income	$ 1,854	$ 1,006