Financial Instruments - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Jul. 31, 2025 |
Jul. 31, 2024 |
Jul. 31, 2025 |
Jul. 31, 2024 |
Oct. 31, 2024 |
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| Summary of Investment Holdings [Line Items] | |||||
| Gain on equity securities | $ (2) | $ 0 | |||
| Decrease) in equity securities, FV-NI | 38 | ||||
| Fair Value | |||||
| Summary of Investment Holdings [Line Items] | |||||
| Equity securities without readily determinable fair value, amount | $ 54 | 54 | $ 88 | ||
| Gain on equity securities | 5 | ||||
| Unrealized gain (loss) on equity securities | $ (7) | (4) | $ 47 | ||
| Realized gain (loss) on equity securities | 1 | ||||
| Measurement Alternative | |||||
| Summary of Investment Holdings [Line Items] | |||||
| Equity securities without readily determinable fair value, amount | 252 | 252 | $ 200 | ||
| Unrealized gain (loss) on equity securities | $ (1) | $ (7) | |||
| Realized gain (loss) on equity securities | $ (1) | ||||
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- Definition Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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