Summary Information by Operating Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Segment Reporting Information [Line Items]
Net sales	$ 49,605	$ 37,432	$ 182,214	$ 140,672
Operating income	14,083	10,282	56,607	41,338
Americas
Segment Reporting Information [Line Items]
Net sales	20,209	17,574	72,091	60,345
Operating income	6,177	5,932	24,064	20,030
Europe
Segment Reporting Information [Line Items]
Net sales	10,342	8,659	39,760	33,935
Operating income	3,275	2,855	13,269	11,083
Greater China
Segment Reporting Information [Line Items]
Net sales	13,230	6,230	46,197	25,561
Operating income	5,147	2,081	18,227	8,869
Japan
Segment Reporting Information [Line Items]
Net sales	2,872	2,627	11,777	11,719
Operating income	1,447	1,214	5,634	5,376
Rest of Asia Pacific
Segment Reporting Information [Line Items]
Net sales	2,952	2,342	12,389	9,112
Operating income	$ 1,154	$ 706	$ 4,603	$ 2,978