Segment Information and Geographic Data - Net Sales (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 24, 2022	Sep. 25, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 383,285	$ 394,328	$ 365,817
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	138,573	147,859	133,803
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	72,559	74,200	68,366
Other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 172,153	$ 172,269	$ 163,648