Segment Reporting - Revenue by Country (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2026	Sep. 28, 2025	Sep. 29, 2024
Segment Reporting
Revenues	$ 43,120	$ 44,284	$ 38,962
Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Segment Reporting
Percentage of total	100.00%	100.00%	100.00%
CHINA (including Hong Kong) | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Segment Reporting
Revenues	$ 18,079	$ 20,340	$ 17,826
Percentage of total	42.00%	46.00%	46.00%
UNITED STATES | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Segment Reporting
Revenues	$ 10,792	$ 10,515	$ 9,686
Percentage of total	25.00%	24.00%	25.00%
KOREA, REPUBLIC OF | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Segment Reporting
Revenues	$ 9,467	$ 9,542	$ 7,995
Percentage of total	22.00%	21.00%	20.00%
Other Foreign | Revenue from Contract with Customer Benchmark | Geographic Concentration Risk
Segment Reporting
Revenues	$ 4,782	$ 3,887	$ 3,455
Percentage of total	11.00%	9.00%	9.00%