Taxes on Earnings - Provision for Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Income Tax Disclosure [Abstract]
Net income tax charges (benefits)	$ (214)	$ (1,100)	$ 456
Net valuation allowance release	198	255	156
Restructuring benefits	60	101	44
Filing of tax returns in various jurisdictions	14	58	189
Tax benefit related to acquisition charges	11	42	43
Uncertain tax position charges	39	27	107
Chnages in tax rate	25
Other net tax charges (benefits)			26
Internal reorganization		726	649
Tax charges related to settlements		60	51
Tax charges for extinguishment of debt		25
Withholdings taxes on undistributed foreign earnings			55
Excess tax benefits on stock options, restricted stock and performance share units,			33
Income tax benefits, reduced rates for subsidiaries in certain countries	$ 217	$ 190	$ 313
Income tax benefits, reduced rates for subsidiaries in certain countries (in dollars per share)	$ 0.22	$ 0.19	$ 0.30

Effective Income Tax Rate Reconciliation, Business Combination, Amount

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Effective Income Tax Rate Reconciliation, Debt Extinguishment, 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, 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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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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