Cash Equivalents and Investments (Available-for-Sale Debt Securities, Contractual Maturities) (Details) $ in Millions |
Jul. 31, 2026
USD ($)
|
|---|---|
| Amortized Cost | |
| Due within one year | $ 514 |
| Due between one and three years | 1,805 |
| Due between three and five years | 2,754 |
| Due between five and ten years | 143 |
| Due after ten years | 159 |
| Total | 5,375 |
| Fair Value | |
| Due within one year | 515 |
| Due between one and three years | 1,807 |
| Due between three and five years | 2,727 |
| Due between five and ten years | 143 |
| Due after ten years | 158 |
| Total | $ 5,350 |
| X | ||||||||||
- Definition Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Three Years, Amortized Cost No definition available.
|
| X | ||||||||||
- Definition Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Three Years, Fair Value No definition available.
|
| X | ||||||||||
- Definition Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Three Through Five Years, Amortized Cost No definition available.
|
| X | ||||||||||
- Definition Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Three Through Five Years, Fair Value No definition available.
|
| 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 sixth through tenth 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
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- References No definition available.
|
| 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 rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| 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 rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| 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 after rolling tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| 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 after rolling tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| 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 rolling sixth through tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amortized cost excluding accrued interest, after allowance for credit loss, 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
|
| X | ||||||||||
- Definition Amount excluding accrued interest, 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
|