Composition of Certain Financial Statement Items Investment and Other Income (Expense), Net (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Mar. 29, 2026	Mar. 30, 2025	Mar. 29, 2026	Mar. 30, 2025
Investment Income, Net [Abstract]
Interest and dividend income	$ 113	$ 167	$ 250	$ 336
Net (losses) gains on marketable securities	(64)	18	(120)	37
Net gains (losses) on other investments	7	(5)	217	26
Net losses on deferred compensation plan assets	(56)	(34)	(13)	(20)
Impairment losses on other investments	(12)	(16)	(23)	(41)
Equity in net earnings of investees	44	18	83	16
Other	62	0	50	37
Investment and other income, net	$ 94	$ 148	$ 444	$ 391

Impairment losses on other investments without readily determinable fair value

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.

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