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Fair Value Measurements (Tables) | 12 Months Ended
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Jul. 31, 2025
Fair Value Disclosures [Abstract] |
Financial assets and liabilities measured at fair value on recurring basis | The following table summarizes financial assets that we measured at fair value on a recurring basis at the dates indicated, classified in accordance with the fair value hierarchy described above.
| At July 31, 2025 |  | At July 31, 2024
(In millions) | Level 1 |  | Level 2 |  |  |  | Total Fair Value |  | Level 1 |  | Level 2 |  |  |  | Total Fair Value
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents, primarily money market funds | $ | 1,790 |  |  | $ | — |  |  |  |  | $ | 1,790 |  |  | $ | 2,538 |  |  | $ | — |  |  |  |  | $ | 2,538 |
Available-for-sale debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate notes | — |  |  | 502 |  |  |  |  | 502 |  |  | — |  |  | 456 |  |  |  |  | 456 |
U.S. agency securities | — |  |  | 1,316 |  |  |  |  | 1,316 |  |  | — |  |  | 159 |  |  |  |  | 159 |
Total available-for-sale debt securities | — |  |  | 1,818 |  |  |  |  | 1,818 |  |  | — |  |  | 615 |  |  |  |  | 615 |
Total assets measured at fair value on a recurring basis | $ | 1,790 |  |  | $ | 1,818 |  |  |  |  | $ | 3,608 |  |  | $ | 2,538 |  |  | $ | 615 |  |  |  |  | $ | 3,153 |
Cash equivalents and available-for-sale debt and equity securities by balance sheet classification and level in the fair value hierarchy | The following table summarizes our cash equivalents and available-for-sale debt securities by balance sheet classification and level in the fair value hierarchy at the dates indicated:
| At July 31, 2025 |  | At July 31, 2024
(In millions) | Level 1 |  | Level 2 |  |  |  | Total Fair Value |  | Level 1 |  | Level 2 |  |  |  | Total Fair Value
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
In cash and cash equivalents | $ | 1,790 |  |  | $ | — |  |  |  |  | $ | 1,790 |  |  | $ | 2,538 |  |  | $ | — |  |  |  |  | $ | 2,538 |
Available-for-sale debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
In investments | $ | — |  |  | $ | 1,668 |  |  |  |  | $ | 1,668 |  |  | $ | — |  |  | $ | 465 |  |  |  |  | $ | 465 |
In funds receivable and amounts held for customers | — |  |  | 150 |  |  |  |  | 150 |  |  | — |  |  | 150 |  |  |  |  | 150 |
Total available-for-sale debt securities | $ | — |  |  | $ | 1,818 |  |  |  |  | $ | 1,818 |  |  | $ | — |  |  | $ | 615 |  |  |  |  | $ | 615 |
Equity Securities without Readily Determinable Fair Value | The following table summarizes the adjustments to the carrying value of our long-term investments.
| July 31,
(In millions) | 2025 |  | 2024 |  | 2023
Upward adjustments | $ | 11 |  |  | $ | 4 |  |  | $ | — |
Downward adjustments, including impairments | (51) |  |  | (2) |  |  | (6) |
Net adjustments | $ | (40) |  |  | $ | 2 |  |  | $ | (6) |

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- Definition Tabular disclosure of investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 + Details
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 55 -Paragraph 10 -SubTopic 10 -Topic 825 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482881/825-10-55-10 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-13 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482881/825-10-55-12 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-12 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-11 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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