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Taxes on Earnings - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Apr. 30, 2025 | Apr. 30, 2024 | Apr. 30, 2025 | Apr. 30, 2024 | Oct. 31, 2024
Income Tax Examination [Line Items] |  |  |  |  |
Provision (benefit) for taxes | $ 5 | $ 131 | $ 111 | $ 227 |
Effective tax rate (as a percent) | (0.50%) | 29.40% | (35.60%) | 24.50% |
Net income tax expense (benefit) | $ (94) | $ 0 | $ (111) | $ 0 |
Cost reduction program, amount | 33 |  | 33 |  |
Non domestic, amount | 33 |  | 33 |  |
Income tax expense (benefit) related to tax audit settlements | 16 |  | 16 |  |
Effective income tax rate reconciliation, benefit, share-based payment arrangement, amount |  |  | 31 |  |
Income tax (benefit) on restructuring charges, separation costs, transformation costs and acquisition and other related charges |  |  | 14 |  |
Disposition of asset |  |  | $ 22 |  |
Income tax examination, description |  |  | The Company engages in continuous discussion and negotiation with tax authorities regarding tax matters in various jurisdictions. The Company is no longer subject to U.S. federal tax audits for years prior to 2020. The IRS is conducting audits of the Company's fiscal 2020 through 2022 U.S. federal income tax returns. The Company does not expect complete resolution of any IRS audit cycle within the next 12 months. With respect to major state and foreign tax jurisdictions, the Company is no longer subject to tax authority examinations for years prior to 2005. It is reasonably possible that certain foreign tax issues may be concluded in the next 12 months, including issues involving resolution of certain intercompany transactions and other matters. The Company believes it is reasonably possible that its existing unrecognized tax benefits for these matters may be reduced by an amount up to $5 million within the next 12 months. |  |
Unrecognized tax benefits | 365 |  | $ 365 |  | $ 724
Unrecognized tax benefits that would affect effective tax rate if realized | 265 |  | 265 |  | 344
Interest on income taxes expense |  |  | 19 |  |
Income ax penalties expense |  |  |  | $ 1 |
Accrued income tax for interest and penalties | 39 |  | 39 |  | $ 58
State, Local And Foreign Jurisdiction |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |
Decrease in unrecognized tax benefits is reasonably possible | 5 |  | $ 5 |  |
Income tax examination likelihood of conclusion period |  |  | 12 months |  |
Internal Revenue Service (IRS) |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | $ 340 |  |  |  |

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