Composition of Certain Financial Statement Items Investment and Other Income, Net (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 28, 2025	Sep. 29, 2024	Sep. 24, 2023
Investment Income, Net [Abstract]
Interest and dividend income	$ 639	$ 675	$ 313
Net gains on marketable securities	254	14	75
Net gains on other investments	44	175	21
Net gains on deferred compensation plan assets	127	198	86
Impairment losses on other investments	113	79	132
Other	21	(21)	(14)
Investment and other income, net	$ 972	$ 962	$ 349

Impairment losses on other investments without readily determinable fair value

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- Definition

Net (losses) gains on deferred compensation plan assets

+ References

No definition available.

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- Definition

Amount of gain (loss) included in earnings for investments classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
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- Definition

Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(7)(a))
-Publisher FASB
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- References

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- Definition

Amount of realized gain (loss) on investment in marketable security.

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No definition available.

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- Definition

The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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Amount of income (expense) related to nonoperating activities, classified as other.

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-Topic 815
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