Consolidated Financial Statement Details - Other Income/(Expense), Net (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 24, 2022	Sep. 25, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest and dividend income	$ 3,750	$ 2,825	$ 2,843
Interest expense	(3,933)	(2,931)	(2,645)
Other income/(expense), net	(382)	(228)	60
Total other income/(expense), net	$ (565)	$ (334)	$ 258