Composition of Certain Financial Statement Items Investment and Other (Expense) Income, Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 26, 2023	Mar. 27, 2022	Mar. 26, 2023	Mar. 27, 2022
Investment Income, Net [Abstract]
Interest and dividend income	$ 59	$ 20	$ 114	$ 37
Net gains (losses) on marketable securities	9	(240)	20	(223)
Net (losses) gains on other investments	0	(21)	0	73
Net gains (losses) on deferred compensation plan assets	21	(43)	47	(30)
Impairment losses on other investments	(87)	(20)	(101)	(21)
Other	(18)	6	(20)	6
Investment and other (expense) income, net	$ (16)	$ (298)	$ 60	$ (158)