Segment Information and Geographic Data - Information by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Segment Reporting Information [Line Items]
Net sales	$ 85,777	$ 81,797	$ 296,105	$ 293,787
Operating income	25,352	22,998	93,625	87,332
Americas
Segment Reporting Information [Line Items]
Net sales	37,678	35,383	125,381	122,445
Operating income	15,209	13,117	50,640	44,908
Europe
Segment Reporting Information [Line Items]
Net sales	21,884	20,205	76,404	71,831
Operating income	9,170	7,995	31,872	27,380
Greater China
Segment Reporting Information [Line Items]
Net sales	14,728	15,758	51,919	57,475
Operating income	5,562	6,207	20,884	24,175
Japan
Segment Reporting Information [Line Items]
Net sales	5,097	4,821	19,126	18,752
Operating income	2,544	2,443	9,498	9,073
Rest of Asia Pacific
Segment Reporting Information [Line Items]
Net sales	6,390	5,630	23,275	23,284
Operating income	$ 2,610	$ 2,328	$ 9,995	$ 9,447