Financial Instruments - Schedule of Contractual Maturities of Investments in Available-for-Sale Debt Securities (Details) - USD ($) $ in Millions |
Apr. 30, 2026 |
Oct. 31, 2025 |
|---|---|---|
| Amortized Cost | ||
| Amortized Cost | $ 220 | $ 216 |
| Fair Value | ||
| Fair Value | 224 | 222 |
| Total debt securities | ||
| Amortized Cost | ||
| Due in one year | 34 | |
| Due in one to five years | 1 | |
| Due in more than five years | 116 | |
| Amortized Cost | 151 | 151 |
| Fair Value | ||
| Due in one year | 34 | |
| Due in one to five years | 1 | |
| Due in more than five years | 120 | |
| Fair Value | $ 155 | $ 157 |
| X | ||||||||||
- Definition Amortized Cost of available-for-sale debt securities, maturing after the fifth fiscal year following the latest fiscal year. No definition available.
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| X | ||||||||||
- Definition Fair value of available-for-sale debt securities, maturing after the fifth fiscal year following the latest fiscal year. No definition available.
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| X | ||||||||||
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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