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Investments (Tables) | 9 Months Ended
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Apr. 26, 2025
Investments, Debt and Equity Securities [Abstract] |
Summary of Available-for-Sale Debt Investments | The following tables summarize our available-for-sale debt investments (in millions):
April 26, 2025 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized and Credit Losses |  | Fair Value
U.S. government securities | $ | 2,079 |  |  | $ | 4 |  |  | $ | (15) |  |  | $ | 2,068 |
U.S. government agency securities | 77 |  |  | — |  |  | — |  |  | 77 |
Non-U.S. government and agency securities | 376 |  |  | 1 |  |  | — |  |  | 377 |
Corporate debt securities | 3,206 |  |  | 7 |  |  | (75) |  |  | 3,138 |
U.S. agency mortgage-backed securities | 556 |  |  | — |  |  | (66) |  |  | 490 |
Commercial paper | 436 |  |  | — |  |  | — |  |  | 436 |
Certificates of deposit | 608 |  |  | — |  |  | — |  |  | 608 |
Total | $ | 7,338 |  |  | $ | 12 |  |  | $ | (156) |  |  | $ | 7,194 |
July 27, 2024 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized and Credit Losses |  | Fair Value
U.S. government securities | $ | 2,380 |  |  | $ | 1 |  |  | $ | (28) |  |  | $ | 2,353 |
U.S. government agency securities | 223 |  |  | — |  |  | (2) |  |  | 221 |
Non-U.S. government and agency securities | 370 |  |  | 1 |  |  | — |  |  | 371 |
Corporate debt securities | 3,818 |  |  | 5 |  |  | (146) |  |  | 3,677 |
U.S. agency mortgage-backed securities | 1,959 |  |  | — |  |  | (178) |  |  | 1,781 |
Commercial paper | 1,023 |  |  | — |  |  | — |  |  | 1,023 |
Certificates of deposit | 439 |  |  | — |  |  | — |  |  | 439 |
Total | $ | 10,212 |  |  | $ | 7 |  |  | $ | (354) |  |  | $ | 9,865 |
Gross Realized Gains and Gross Realized Losses Related to Available-for-Sale Investment | The following table presents the gross realized gains and gross realized losses related to available-for-sale debt investments (in millions):
| Three Months Ended |  | Nine Months Ended
| April 26, 2025 |  | April 27, 2024 |  | April 26, 2025 |  | April 27, 2024
Gross realized gains | $ | 1 |  |  | $ | 2 |  |  | $ | 9 |  |  | $ | 7 |
Gross realized losses | (31) |  |  | (16) |  |  | $ | (84) |  |  | $ | (64) |
Total | $ | (30) |  |  | $ | (14) |  |  | $ | (75) |  |  | $ | (57) |
Available-for-Sale Investments with Gross Unrealized Losses | The following tables present the breakdown of the available-for-sale debt investments with gross unrealized losses and the duration that those losses had been unrealized at April 26, 2025 and July 27, 2024 (in millions):
| UNREALIZED LOSSES LESS THAN 12 MONTHS |  | UNREALIZED LOSSES 12 MONTHS OR GREATER |  | TOTAL
April 26, 2025 | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
U.S. government securities | $ | 970 |  |  | $ | (6) |  |  | $ | 313 |  |  | $ | (9) |  |  | $ | 1,283 |  |  | $ | (15) |
U.S. government agency securities | 10 |  |  | — |  |  | 31 |  |  | — |  |  | 41 |  |  | — |
Non-U.S. government and agency securities | 76 |  |  | — |  |  | — |  |  | — |  |  | 76 |  |  | — |
Corporate debt securities | 319 |  |  | (1) |  |  | 1,917 |  |  | (48) |  |  | 2,236 |  |  | (49) |
U.S. agency mortgage-backed securities | 6 |  |  | — |  |  | 482 |  |  | (66) |  |  | 488 |  |  | (66) |
Total | $ | 1,381 |  |  | $ | (7) |  |  | $ | 2,743 |  |  | $ | (123) |  |  | $ | 4,124 |  |  | $ | (130) |
| UNREALIZED LOSSES LESS THAN 12 MONTHS |  | UNREALIZED LOSSES 12 MONTHS OR GREATER |  | TOTAL
July 27, 2024 | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
U.S. government securities | $ | 598 |  |  | $ | (2) |  |  | $ | 1,399 |  |  | $ | (26) |  |  | $ | 1,997 |  |  | $ | (28) |
U.S. government agency securities | 89 |  |  | — |  |  | 109 |  |  | (2) |  |  | 198 |  |  | (2) |
Non-U.S. government and agency securities | 17 |  |  | — |  |  | — |  |  | — |  |  | 17 |  |  | — |
Corporate debt securities | 276 |  |  | (1) |  |  | 2,818 |  |  | (115) |  |  | 3,094 |  |  | (116) |
U.S. agency mortgage-backed securities | 238 |  |  | (1) |  |  | 1,438 |  |  | (177) |  |  | 1,676 |  |  | (178) |
Commercial paper | 10 |  |  | — |  |  | — |  |  | — |  |  | 10 |  |  | — |
Total | $ | 1,228 |  |  | $ | (4) |  |  | $ | 5,764 |  |  | $ | (320) |  |  | $ | 6,992 |  |  | $ | (324) |
Maturities of Available-for-Sale Debt Investments | The following table summarizes the maturities of our available-for-sale debt investments as of April 26, 2025 (in millions):
| Amortized Cost |  | Fair Value
Within 1 year | $ | 3,160 |  |  | $ | 3,118 |
After 1 year through 5 years | 3,622 |  |  | 3,586 |
Mortgage-backed securities with no single maturity | 556 |  |  | 490 |
Total | $ | 7,338 |  |  | $ | 7,194 |

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- Definition Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 + Details
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