Taxes on Earnings - Provision for Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
Income Tax Examination [Line Items]
Net income tax benefits	$ 470	$ 9	$ (244)
Internal reorganization	649	89
Uncertain tax position charges	118	15
Withholdings taxes on undistributed foreign earnings	55
Tax benefits related to settlements	51		124
Other net tax benefits	26	9	17
Filing of tax returns in various jurisdictions	183	16
Net valuation allowance release	156	393
Restructuring benefits	47	50	82
Tax benefit related to acquisition charges	43
Excess tax benefits on stock options, restricted stock and performance share units,	33
Proxy contest costs			20
Income tax benefits, reduced rates for subsidiaries in certain countries	$ 313	$ 385	$ 344
Income tax benefits, reduced rates for subsidiaries in certain countries (in dollars per share)	$ 0.30	$ 0.32	$ 0.24
Hewlett-Packard Company v. Oracle Corporation
Income Tax Examination [Line Items]
Tax benefits related to settlements		$ 533

Effective Income Tax Rate Reconciliation, Business Combination, Amount

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Effective Income Tax Rate Reconciliation, Filing Of Tax Returns In Various Jurisdictions, Amount

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Effective Income Tax Rate Reconciliation, Internal Reorganization, Amount

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Effective Income Tax Rate Reconciliation, Proxy Contest Costs, Amount

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Effective Income Tax Rate Reconciliation, Restructuring Charges, Amount

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Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Foreign Withholding Taxes, Amount

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Effective Income Tax Rate Reconciliation, Uncertain Tax Position Charges, Amount

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Income Tax Reconciliation Other Discrete Items Tax Charges (Credits)

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to reduced rates for subsidiaries in certain countries resulting from certain employment actions and capital investments undertaken by the entity.

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Per share amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to reduced rates for subsidiaries in certain countries resulting from certain employment actions and capital investments undertaken by the entity.

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 740
-Section 35
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126970579&loc=d3e23163-113944

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax settlements. Including, but not limited to, domestic tax settlement, foreign tax settlement, state and local tax settlement, and other tax settlements.

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