Segment Information and Geographic Data - Summary Information by Operating Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Segment Reporting Information [Line Items]
Net sales	$ 42,358	$ 49,605	$ 168,787	$ 182,214
Operating income	10,105	14,083	48,263	56,607
Americas
Segment Reporting Information [Line Items]
Net sales	17,963	20,209	66,384	72,091
Operating income	5,453	6,177	21,587	24,064
Europe
Segment Reporting Information [Line Items]
Net sales	9,643	10,342	39,110	39,760
Operating income	2,666	3,275	12,047	13,269
Greater China
Segment Reporting Information [Line Items]
Net sales	8,848	13,230	39,707	46,197
Operating income	3,415	5,147	15,809	18,227
Japan
Segment Reporting Information [Line Items]
Net sales	3,529	2,872	12,604	11,777
Operating income	1,435	1,447	5,605	5,634
Rest of Asia Pacific
Segment Reporting Information [Line Items]
Net sales	2,375	2,952	10,982	12,389
Operating income	$ 753	$ 1,154	$ 3,880	$ 4,603