Composition of Certain Financial Statement Items Investment and Other Income (Expense), Net (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jun. 28, 2026	Jun. 29, 2025	Jun. 28, 2026	Jun. 29, 2025
Investment Income, Net [Abstract]
Interest and dividend income		$ 97	$ 160	$ 347	$ 495
Net gains on marketable securities (1)	[1]	726	204	605	241
Net gains on other investments		19	5	237	30
Net gains on deferred compensation plan assets		149	84	135	65
Impairment losses on other investments		(38)	(52)	(61)	(93)
Equity in net earnings of investees		66	(4)	149	13
Other		(5)	(39)	46	(3)
Investment and other income, net		$ 1,014	$ 358	$ 1,458	$ 748

[1] Primarily consist of net unrealized gains related to certain marketable equity securities.