Income Taxes (Activity Related To Gross Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance as of the beginning of the year	$ 169	$ 308	$ 316
Increases related to current year tax positions	21	20	19
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	5	21	8
Reductions related to prior year tax positions	(9)	(17)	(18)
Reductions related to settlements	(3)	(9)	(8)
Reductions related to expirations of statute of limitations	(18)	(154)	(9)
Balance as of the end of the year	$ 165	$ 169	$ 308

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
-Publisher FASB
-Name Accounting Standards Codification
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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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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.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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

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