Financial Instruments - Schedule of Pre-Tax Effect of Derivative Instruments in Cash Flow Hedging Relationships Included in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
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Apr. 30, 2026 |
Apr. 30, 2025 |
Apr. 30, 2026 |
Apr. 30, 2025 |
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Unrealized gains (losses) arising during the period | $ 106 | $ (692) | $ (147) | $ (360) |
| Cash flow hedges: | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Unrealized gains (losses) arising during the period | 106 | (692) | (147) | (360) |
| Foreign currency contracts | Cash flow hedges: | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Unrealized gains (losses) arising during the period | 106 | (687) | (147) | (363) |
| Interest rate contracts | Cash flow hedges: | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Unrealized gains (losses) arising during the period | $ 0 | $ (5) | $ 0 | $ 3 |
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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/2003/role/disclosureRef
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- Definition Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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