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Available-for-Sale Debt and Equity Investments (Tables) | 6 Months Ended
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Jan. 29, 2022
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 29, 2022 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized and Credit Losses |  | Fair Value
U.S. government securities | $ | 1,702 |  |  | $ | 4 |  |  | $ | (19) |  |  | $ | 1,687 |
U.S. government agency securities | 142 |  |  | — |  |  | (2) |  |  | 140 |
Corporate debt securities | 9,008 |  |  | 82 |  |  | (102) |  |  | 8,988 |
U.S. agency mortgage-backed securities | 2,569 |  |  | 10 |  |  | (56) |  |  | 2,523 |
Commercial paper | 614 |  |  | — |  |  | — |  |  | 614 |
Certificates of deposit | 209 |  |  | — |  |  | — |  |  | 209 |
Total | $ | 14,244 |  |  | $ | 96 |  |  | $ | (179) |  |  | $ | 14,161 |
July 31, 2021 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized and Credit Losses |  | Fair Value
U.S. government securities | $ | 1,773 |  |  | $ | 21 |  |  | $ | — |  |  | $ | 1,794 |
U.S. government agency securities | 152 |  |  | — |  |  | — |  |  | 152 |
Non-U.S. government and agency securities | 3 |  |  | — |  |  | — |  |  | 3 |
Corporate debt securities | 8,727 |  |  | 213 |  |  | (30) |  |  | 8,910 |
U.S. agency mortgage-backed securities | 2,838 |  |  | 34 |  |  | (10) |  |  | 2,862 |
Commercial paper | 1,190 |  |  | — |  |  | — |  |  | 1,190 |
Certificates of deposit | 295 |  |  | — |  |  | — |  |  | 295 |
Total | $ | 14,978 |  |  | $ | 268 |  |  | $ | (40) |  |  | $ | 15,206 |
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 29, 2022 |  | January 23, 2021 |  | January 29, 2022 |  | January 23, 2021
Gross realized gains | $ | 13 |  |  | $ | 9 |  |  | $ | 19 |  |  | $ | 24 |
Gross realized losses | (3) |  |  | — |  |  | (3) |  |  | — |
Total | $ | 10 |  |  | $ | 9 |  |  | $ | 16 |  |  | $ | 24 |
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 29, 2022 and July 31, 2021 (in millions):
| UNREALIZED LOSSES LESS THAN 12 MONTHS |  | UNREALIZED LOSSES 12 MONTHS OR GREATER |  | TOTAL
January 29, 2022 | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
U.S. government securities | $ | 1,124 |  |  | $ | (19) |  |  | $ | 2 |  |  | $ | — |  |  | $ | 1,126 |  |  | $ | (19) |
U.S. government agency securities | 125 |  |  | (1) |  |  | 15 |  |  | (1) |  |  | 140 |  |  | (2) |
Corporate debt securities | 4,230 |  |  | (69) |  |  | 182 |  |  | (8) |  |  | 4,412 |  |  | (77) |
U.S. agency mortgage-backed securities | 1,881 |  |  | (52) |  |  | 91 |  |  | (4) |  |  | 1,972 |  |  | (56) |
Total | $ | 7,360 |  |  | $ | (141) |  |  | $ | 290 |  |  | $ | (13) |  |  | $ | 7,650 |  |  | $ | (154) |
| UNREALIZED LOSSES LESS THAN 12 MONTHS |  | UNREALIZED LOSSES 12 MONTHS OR GREATER |  | TOTAL
July 31, 2021 | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses |  | Fair Value |  | Gross Unrealized Losses
U.S. government securities | $ | 468 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 468 |  |  | $ | — |
U.S. government agency securities | 26 |  |  | — |  |  | — |  |  | — |  |  | 26 |  |  | — |
Corporate debt securities | 1,086 |  |  | (5) |  |  | 6 |  |  | — |  |  | 1,092 |  |  | (5) |
U.S. agency mortgage-backed securities | 1,293 |  |  | (10) |  |  | 13 |  |  | — |  |  | 1,306 |  |  | (10) |
Commercial paper | 37 |  |  | — |  |  | — |  |  | — |  |  | 37 |  |  | — |
Total | $ | 2,910 |  |  | $ | (15) |  |  | $ | 19 |  |  | $ | — |  |  | $ | 2,929 |  |  | $ | (15) |
Maturities of Available-for-Sale Debt Investments | The following table summarizes the maturities of our available-for-sale debt investments as of January 29, 2022 (in millions):
| Amortized Cost |  | Fair Value
Within 1 year | $ | 3,512 |  |  | $ | 3,496 |
After 1 year through 5 years | 7,999 |  |  | 7,969 |
After 5 years through 10 years | 162 |  |  | 171 |
After 10 years | 2 |  |  | 2 |
Mortgage-backed securities with no single maturity | 2,569 |  |  | 2,523 |
Total | $ | 14,244 |  |  | $ | 14,161 |

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563 + Details
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