Taxes on Earnings - Schedule of Deferred Tax Asset Valuation Allowance and Changes (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Movement in Valuation Allowances and Reserves
Balance at beginning of year	$ 6,688	$ 6,994	$ 7,592
Income tax (benefit) expense	(230)	(300)	(650)
Goodwill, other comprehensive loss (income), currency translation and charges to other accounts	21	(6)	52
Balance at end of year	$ 6,479	$ 6,688	$ 6,994

Valuation Allowance, Deferred Tax Asset, Increase (Decrease) for Income Tax Expense (Benefit), Amount

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs related to currency translation and other.

+ References

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

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- Definition

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

+ References

No definition available.

+ Details

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