Income Taxes Income Tax (Details) - USD ($) $ in Millions	6 Months Ended
Mar. 30, 2024	Sep. 30, 2023
Income Tax [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 200
Valuation Allowance	3,017	$ 3,187
Unrecognized Tax Benefits, Period Increase (Decrease)	(100)
Unrecognized Tax Benefits	2,400	$ 2,500
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 500

[Line Items] for Income Tax [Table]

No definition available.

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

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-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-2

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- Definition

The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

+ References

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- Definition

Amount of unrecognized tax benefits.

+ References

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-SubTopic 10
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- Definition

Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 15A
-Subparagraph (a)
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- Definition

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

+ References

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-SubTopic 10
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