Segment Information and Geographic Data - Information by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Dec. 25, 2021
Segment Reporting Information [Line Items]
Net sales	$ 117,154	$ 123,945
Operating income	36,016	41,488
Americas
Segment Reporting Information [Line Items]
Net sales	49,278	51,496
Operating income	17,864	19,585
Europe
Segment Reporting Information [Line Items]
Net sales	27,681	29,749
Operating income	10,017	11,545
Greater China
Segment Reporting Information [Line Items]
Net sales	23,905	25,783
Operating income	10,437	11,183
Japan
Segment Reporting Information [Line Items]
Net sales	6,755	7,107
Operating income	3,236	3,349
Rest of Asia Pacific
Segment Reporting Information [Line Items]
Net sales	9,535	9,810
Operating income	$ 3,851	$ 3,995