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Investments (Tables) | 6 Months Ended
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Jan. 27, 2024
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):
January 27, 2024 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized and Credit Losses |  | Fair Value
U.S. government securities | $ | 2,428 |  |  | $ | 3 |  |  | $ | (34) |  |  | $ | 2,397 |
U.S. government agency securities | 354 |  |  | — |  |  | (2) |  |  | 352 |
Non-U.S. government and agency securities | 364 |  |  | — |  |  | — |  |  | 364 |
Corporate debt securities | 5,343 |  |  | 7 |  |  | (210) |  |  | 5,140 |
U.S. agency mortgage-backed securities | 2,127 |  |  | 1 |  |  | (197) |  |  | 1,931 |
Commercial paper | 828 |  |  | — |  |  | — |  |  | 828 |
Certificates of deposit | 518 |  |  | — |  |  | — |  |  | 518 |
Total | $ | 11,962 |  |  | $ | 11 |  |  | $ | (443) |  |  | $ | 11,530 |
July 29, 2023 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized and Credit Losses |  | Fair Value
U.S. government securities | $ | 3,587 |  |  | $ | 1 |  |  | $ | (62) |  |  | $ | 3,526 |
U.S. government agency securities | 428 |  |  | — |  |  | (5) |  |  | 423 |
Non-U.S. government and agency securities | 364 |  |  | — |  |  | (1) |  |  | 363 |
Corporate debt securities | 7,238 |  |  | 3 |  |  | (327) |  |  | 6,914 |
U.S. agency mortgage-backed securities | 2,421 |  |  | 14 |  |  | (230) |  |  | 2,205 |
Commercial paper | 1,484 |  |  | — |  |  | — |  |  | 1,484 |
Certificates of deposit | 677 |  |  | — |  |  | — |  |  | 677 |
Total | $ | 16,199 |  |  | $ | 18 |  |  | $ | (625) |  |  | $ | 15,592 |
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 |  | Six Months Ended
| January 27, 2024 |  | January 28, 2023 |  | January 27, 2024 |  | January 28, 2023
Gross realized gains | $ | 5 |  |  | $ | 3 |  |  | $ | 5 |  |  | $ | 3 |
Gross realized losses | (28) |  |  | (6) |  |  | (48) |  |  | (12) |
Total | $ | (23) |  |  | $ | (3) |  |  | $ | (43) |  |  | $ | (9) |
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 January 27, 2024 and July 29, 2023 (in millions):
| UNREALIZED LOSSES LESS THAN 12 MONTHS |  | UNREALIZED LOSSES 12 MONTHS OR GREATER |  | TOTAL
January 27, 2024 | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
U.S. government securities | $ | 1,145 |  |  | $ | (9) |  |  | $ | 550 |  |  | $ | (25) |  |  | $ | 1,695 |  |  | $ | (34) |
U.S. government agency securities | 224 |  |  | — |  |  | 39 |  |  | (2) |  |  | 263 |  |  | (2) |
Non-U.S. government and agency securities | 200 |  |  | — |  |  | — |  |  | — |  |  | 200 |  |  | — |
Corporate debt securities | 557 |  |  | (2) |  |  | 3,527 |  |  | (178) |  |  | 4,084 |  |  | (180) |
U.S. agency mortgage-backed securities | 415 |  |  | (6) |  |  | 1,320 |  |  | (191) |  |  | 1,735 |  |  | (197) |
Commercial paper | 10 |  |  | — |  |  | — |  |  | — |  |  | 10 |  |  | — |
Total | $ | 2,551 |  |  | $ | (17) |  |  | $ | 5,436 |  |  | $ | (396) |  |  | $ | 7,987 |  |  | $ | (413) |
| UNREALIZED LOSSES LESS THAN 12 MONTHS |  | UNREALIZED LOSSES 12 MONTHS OR GREATER |  | TOTAL
July 29, 2023 | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
U.S. government securities | $ | 2,394 |  |  | $ | (26) |  |  | $ | 931 |  |  | $ | (36) |  |  | $ | 3,325 |  |  | $ | (62) |
U.S. government agency securities | 343 |  |  | (2) |  |  | 72 |  |  | (3) |  |  | 415 |  |  | (5) |
Non-U.S. government and agency securities | 363 |  |  | (1) |  |  | — |  |  | — |  |  | 363 |  |  | (1) |
Corporate debt securities | 1,736 |  |  | (22) |  |  | 4,315 |  |  | (275) |  |  | 6,051 |  |  | (297) |
U.S. agency mortgage-backed securities | 658 |  |  | (13) |  |  | 1,438 |  |  | (217) |  |  | 2,096 |  |  | (230) |
Commercial paper | 97 |  |  | — |  |  | — |  |  | — |  |  | 97 |  |  | — |
Certificates of deposit | 2 |  |  | — |  |  | — |  |  | — |  |  | 2 |  |  | — |
Total | $ | 5,593 |  |  | $ | (64) |  |  | $ | 6,756 |  |  | $ | (531) |  |  | $ | 12,349 |  |  | $ | (595) |
Maturities of Available-for-Sale Debt Investments | The following table summarizes the maturities of our available-for-sale debt investments as of January 27, 2024 (in millions):
| Amortized Cost |  | Fair Value
Within 1 year | $ | 3,686 |  |  | $ | 3,642 |
After 1 year through 5 years | 6,149 |  |  | 5,957 |
Mortgage-backed securities with no single maturity | 2,127 |  |  | 1,931 |
Total | $ | 11,962 |  |  | $ | 11,530 |

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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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