Segment Information and Geographic Data - Net Sales for Countries that Individually Accounted for More than 10% of the Total (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 416,161	$ 391,035	$ 383,285
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	151,790	142,196	138,573
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	64,377	66,952	72,559
Other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 199,994	$ 181,887	$ 172,153