Supplementary Financial Information - Schedule of Other Non-Current Assets (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2026 |
Oct. 31, 2025 |
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| Intangible Asset, Finite-Lived [Line Items] | |||
| Deferred tax assets | $ 3,413 | $ 3,413 | $ 3,318 |
| Right-of-use assets | 1,086 | 1,086 | 1,129 |
| Intangible assets | 802 | 802 | 1,012 |
| Prepaid pension and post-retirement benefit assets | 220 | 220 | 425 |
| Deposits and prepaid | 187 | 187 | 316 |
| Other | 1,411 | 1,411 | 1,361 |
| Other non-current assets | 7,119 | 7,119 | $ 7,561 |
| Customer Contracts, Customer Lists And Distribution Agreements | |||
| Intangible Asset, Finite-Lived [Line Items] | |||
| Impairment charges | $ 23 | $ 55 |
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- Definition Prepaid Pension And Post-retirement Benefit Asset, Non Current No definition available.
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment after one year or beyond the operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of impairment loss for finite- and indefinite-lived intangible assets and capitalized cost for software to be sold, leased, or marketed. Excludes goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer. No definition available.
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- Definition Amount of noncurrent assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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