Stock-Based Compensation - Restricted Stock Units (Narrative) (Details) - Restricted Stock Units - USD ($) $ in Millions	12 Months Ended
Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total grant date fair value of restricted stock awards vested	$ 314	$ 278	$ 297
Unrecognized pre-tax stock-based compensation expense related to non-vested restricted stock awards	$ 394
Remaining weighted-average vesting period	1 year 4 months 24 days

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

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No definition available.

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