Segment Information and Geographic Data - Information by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2024	Apr. 01, 2023	Mar. 30, 2024	Apr. 01, 2023
Segment Reporting Information [Line Items]
Net sales	$ 90,753	$ 94,836	$ 210,328	$ 211,990
Operating income	27,900	28,318	68,273	64,334
Americas
Segment Reporting Information [Line Items]
Net sales	37,273	37,784	87,703	87,062
Operating income	15,074	13,927	35,431	31,791
Europe
Segment Reporting Information [Line Items]
Net sales	24,123	23,945	54,520	51,626
Operating income	9,991	9,368	22,702	19,385
Greater China
Segment Reporting Information [Line Items]
Net sales	16,372	17,812	37,191	41,717
Operating income	6,700	7,531	15,322	17,968
Japan
Segment Reporting Information [Line Items]
Net sales	6,262	7,176	14,029	13,931
Operating income	3,135	3,394	6,954	6,630
Rest of Asia Pacific
Segment Reporting Information [Line Items]
Net sales	6,723	8,119	16,885	17,654
Operating income	$ 2,806	$ 3,268	$ 7,385	$ 7,119