Income Taxes - Aggregate Changes in Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2023	Sep. 24, 2022	Sep. 25, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balances	$ 16,758	$ 15,477	$ 16,475
Increases related to tax positions taken during a prior year	2,044	2,284	816
Decreases related to tax positions taken during a prior year	(1,463)	(1,982)	(1,402)
Increases related to tax positions taken during the current year	2,628	1,936	1,607
Decreases related to settlements with taxing authorities	(19)	(28)	(1,838)
Decreases related to expiration of the statute of limitations	(494)	(929)	(181)
Ending balances	$ 19,454	$ 16,758	$ 15,477

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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