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Available-for-Sale Debt and Equity Investments (Tables) | 6 Months Ended
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Jan. 28, 2023
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 28, 2023 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized and Credit Losses |  | Fair Value
U.S. government securities | $ | 2,050 |  |  | $ | 2 |  |  | $ | (54) |  |  | $ | 1,998 |
U.S. government agency securities | 169 |  |  | — |  |  | (5) |  |  | 164 |
Non-U.S. government and agency securities | 354 |  |  | — |  |  | (1) |  |  | 353 |
Corporate debt securities | 7,480 |  |  | 5 |  |  | (345) |  |  | 7,140 |
U.S. agency mortgage-backed securities | 2,013 |  |  | 2 |  |  | (188) |  |  | 1,827 |
Commercial paper | 1,029 |  |  | — |  |  | — |  |  | 1,029 |
Certificates of deposit | 261 |  |  | — |  |  | — |  |  | 261 |
Total | $ | 13,356 |  |  | $ | 9 |  |  | $ | (593) |  |  | $ | 12,772 |
July 30, 2022 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized and Credit Losses |  | Fair Value
U.S. government securities | $ | 1,287 |  |  | $ | — |  |  | $ | (49) |  |  | $ | 1,238 |
U.S. government agency securities | 142 |  |  | — |  |  | (4) |  |  | 138 |
Non-U.S. government and agency securities | 272 |  |  | — |  |  | — |  |  | 272 |
Corporate debt securities | 8,127 |  |  | 2 |  |  | (311) |  |  | 7,818 |
U.S. agency mortgage-backed securities | 2,134 |  |  | — |  |  | (158) |  |  | 1,976 |
Commercial paper | 255 |  |  | — |  |  | — |  |  | 255 |
Certificates of deposit | 250 |  |  | — |  |  | — |  |  | 250 |
Total | $ | 12,467 |  |  | $ | 2 |  |  | $ | (522) |  |  | $ | 11,947 |
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 28, 2023 |  | January 29, 2022 |  | January 28, 2023 |  | January 29, 2022
Gross realized gains | $ | 3 |  |  | $ | 13 |  |  | $ | 3 |  |  | $ | 19 |
Gross realized losses | (6) |  |  | (3) |  |  | (12) |  |  | (3) |
Total | $ | (3) |  |  | $ | 10 |  |  | $ | (9) |  |  | $ | 16 |
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 28, 2023 and July 30, 2022 (in millions):
| UNREALIZED LOSSES LESS THAN 12 MONTHS |  | UNREALIZED LOSSES 12 MONTHS OR GREATER |  | TOTAL
January 28, 2023 | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
U.S. government securities | $ | 470 |  |  | $ | (6) |  |  | $ | 1,086 |  |  | $ | (48) |  |  | $ | 1,556 |  |  | $ | (54) |
U.S. government agency securities | 33 |  |  | — |  |  | 121 |  |  | (5) |  |  | 154 |  |  | (5) |
Non-U.S. government and agency securities | 339 |  |  | (1) |  |  | — |  |  | — |  |  | 339 |  |  | (1) |
Corporate debt securities | 2,770 |  |  | (94) |  |  | 3,333 |  |  | (219) |  |  | 6,103 |  |  | (313) |
U.S. agency mortgage-backed securities | 305 |  |  | (12) |  |  | 1,440 |  |  | (176) |  |  | 1,745 |  |  | (188) |
Commercial paper | 40 |  |  | — |  |  | — |  |  | — |  |  | 40 |  |  | — |
Total | $ | 3,957 |  |  | $ | (113) |  |  | $ | 5,980 |  |  | $ | (448) |  |  | $ | 9,937 |  |  | $ | (561) |
| UNREALIZED LOSSES LESS THAN 12 MONTHS |  | UNREALIZED LOSSES 12 MONTHS OR GREATER |  | TOTAL
July 30, 2022 | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
U.S. government securities | $ | 1,110 |  |  | $ | (44) |  |  | $ | 120 |  |  | $ | (5) |  |  | $ | 1,230 |  |  | $ | (49) |
U.S. government agency securities | 114 |  |  | (2) |  |  | 24 |  |  | (2) |  |  | 138 |  |  | (4) |
Non-U.S. government and agency securities | 264 |  |  | — |  |  | — |  |  | — |  |  | 264 |  |  | — |
Corporate debt securities | 6,920 |  |  | (240) |  |  | 422 |  |  | (37) |  |  | 7,342 |  |  | (277) |
U.S. agency mortgage-backed securities | 1,305 |  |  | (96) |  |  | 615 |  |  | (62) |  |  | 1,920 |  |  | (158) |
Total | $ | 9,713 |  |  | $ | (382) |  |  | $ | 1,181 |  |  | $ | (106) |  |  | $ | 10,894 |  |  | $ | (488) |
Maturities of Available-for-Sale Debt Investments | The following table summarizes the maturities of our available-for-sale debt investments as of January 28, 2023 (in millions):
| Amortized Cost |  | Fair Value
Within 1 year | $ | 4,806 |  |  | $ | 4,734 |
After 1 year through 5 years | 6,491 |  |  | 6,170 |
After 5 years through 10 years | 46 |  |  | 41 |
Mortgage-backed securities with no single maturity | 2,013 |  |  | 1,827 |
Total | $ | 13,356 |  |  | $ | 12,772 |

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