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Fair Value (Tables) | 6 Months Ended
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Jan. 29, 2022
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | Assets and liabilities measured at fair value on a recurring basis were as follows (in millions):
| JANUARY 29, 2022 |  | JULY 31, 2021
| FAIR VALUE MEASUREMENTS |  | FAIR VALUE MEASUREMENTS
| Level 1 |  | Level 2 |  | Total Balance |  | Level 1 |  | Level 2 |  | Total Balance
Assets: |  |  |  |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |
Money market funds | $ | 3,402 |  |  | $ | — |  |  | $ | 3,402 |  |  | $ | 5,694 |  |  | $ | — |  |  | $ | 5,694 |
Commercial paper | — |  |  | 10 |  |  | 10 |  |  | — |  |  | 114 |  |  | 114 |
U.S. government securities | — |  |  | — |  |  | — |  |  | — |  |  | 300 |  |  | 300 |
Available-for-sale debt investments: |  |  |  |  |  |  |  |  |  |  |
U.S. government securities | — |  |  | 1,687 |  |  | 1,687 |  |  | — |  |  | 1,794 |  |  | 1,794 |
U.S. government agency securities | — |  |  | 140 |  |  | 140 |  |  | — |  |  | 152 |  |  | 152 |
Corporate debt securities | — |  |  | 8,988 |  |  | 8,988 |  |  | — |  |  | 8,910 |  |  | 8,910 |
U.S. agency mortgage-backed securities | — |  |  | 2,523 |  |  | 2,523 |  |  | — |  |  | 2,862 |  |  | 2,862 |
Non-U.S. government and agency securities | — |  |  | — |  |  | — |  |  | — |  |  | 3 |  |  | 3 |
Commercial paper | — |  |  | 614 |  |  | 614 |  |  | — |  |  | 1,190 |  |  | 1,190 |
Certificates of deposit | — |  |  | 209 |  |  | 209 |  |  | — |  |  | 295 |  |  | 295 |
Equity investments: |  |  |  |  |  |  |  |  |  |  |
Marketable equity securities | 221 |  |  | — |  |  | 221 |  |  | 137 |  |  | — |  |  | 137 |
Other assets: |  |  |  |  |  |  |  |  |  |  |
Money market funds | 750 |  |  | — |  |  | 750 |  |  | 750 |  |  | — |  |  | 750 |
Derivative assets | — |  |  | 77 |  |  | 77 |  |  | — |  |  | 126 |  |  | 126 |
Total | $ | 4,373 |  |  | $ | 14,248 |  |  | $ | 18,621 |  |  | $ | 6,581 |  |  | $ | 15,746 |  |  | $ | 22,327 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |
Derivative liabilities | $ | — |  |  | $ | 38 |  |  | $ | 38 |  |  | $ | — |  |  | $ | 20 |  |  | $ | 20 |
Total | $ | — |  |  | $ | 38 |  |  | $ | 38 |  |  | $ | — |  |  | $ | 20 |  |  | $ | 20 |

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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/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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