Compensation Related Costs, Share Based Payments (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 28, 2025	Sep. 29, 2024	Sep. 24, 2023
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Share-based compensation expense before income taxes	$ 2,783	$ 2,648	$ 2,484
Related income tax benefit	(616)	(662)	(463)
Share-based compensation expense, net of income taxes	2,167	1,986	2,021
Cost of revenues
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Share-based compensation expense before income taxes	89	89	76
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Share-based compensation expense before income taxes	2,141	2,024	1,911
Selling, general and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Share-based compensation expense before income taxes	$ 553	$ 535	$ 497

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479983/718-10-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
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+ References

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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