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Cash Equivalents and Marketable Securities (Tables) | 9 Months Ended
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Oct. 26, 2025
Investments, Debt and Equity Securities [Abstract] |
Schedule of Cash Equivalents and Marketable Securities | The following is a summary of cash equivalents and marketable securities:
| Oct 26, 2025
| Pricing Category | Amortized Cost |  | Unrealized Gain |  | Unrealized Loss |  | Estimated Fair Value |  | Reported as
|  |  |  |  | Cash Equivalents |  | Marketable Securities
|  | (In millions)
Debt securities issued by the U.S. Treasury | Level 2 | $ | 22,032 |  |  | $ | 188 |  |  | $ | — |  |  | $ | 22,220 |  |  | $ | 665 |  |  | $ | 21,555 |
Corporate debt securities | Level 2 | 21,588 |  |  | 172 |  |  | (1) |  |  | 21,759 |  |  | 320 |  |  | 21,439 |
Money market funds | Level 1 | 8,610 |  |  | — |  |  | — |  |  | 8,610 |  |  | 8,610 |  |  | — |
Debt securities issued by U.S. government agencies | Level 2 | 2,206 |  |  | 12 |  |  | — |  |  | 2,218 |  |  | — |  |  | 2,218 |
Certificates of deposit | Level 2 | 104 |  |  | — |  |  | — |  |  | 104 |  |  | 104 |  |  | — |
Foreign government bonds | Level 2 | 40 |  |  | 1 |  |  | — |  |  | 41 |  |  | — |  |  | 41 |
Total debt securities with fair value adjustments recorded in other comprehensive income |  | 54,580 |  |  | 373 |  |  | (1) |  |  | 54,952 |  |  | 9,699 |  |  | 45,253 |
Publicly-held equity securities (1) | Level 1 |  |  |  |  |  |  | 3,869 |  |  | — |  |  | 3,869 |
Total |  | $ | 54,580 |  |  | $ | 373 |  |  | $ | (1) |  |  | $ | 58,821 |  |  | $ | 9,699 |  |  | $ | 49,122 |
(1) In the first quarter of fiscal year 2026, one investment was reclassified from non-marketable equity securities to marketable securities following public market trading.
| Jan 26, 2025
| Pricing Category | Amortized Cost |  | Unrealized Gain |  | Unrealized Loss |  | Estimated Fair Value |  | Reported as
|  |  |  |  | Cash Equivalents |  | Marketable Securities
|  | (In millions)
Corporate debt securities | Level 2 | $ | 18,504 |  |  | $ | 51 |  |  | $ | (29) |  |  | $ | 18,526 |  |  | $ | 2,071 |  |  | $ | 16,455 |
Debt securities issued by the U.S. Treasury | Level 2 | 16,749 |  |  | 42 |  |  | (22) |  |  | 16,769 |  |  | 1,801 |  |  | 14,968 |
Money market funds | Level 1 | 3,760 |  |  | — |  |  | — |  |  | 3,760 |  |  | 3,760 |  |  | — |
Debt securities issued by U.S. government agencies | Level 2 | 2,775 |  |  | 7 |  |  | (5) |  |  | 2,777 |  |  | — |  |  | 2,777 |
Foreign government bonds | Level 2 | 177 |  |  | — |  |  | — |  |  | 177 |  |  | 137 |  |  | 40 |
Certificates of deposit | Level 2 | 97 |  |  | — |  |  | — |  |  | 97 |  |  | 97 |  |  | — |
Total debt securities with fair value adjustments recorded in other comprehensive income |  | 42,062 |  |  | 100 |  |  | (56) |  |  | 42,106 |  |  | 7,866 |  |  | 34,240 |
Publicly-held equity securities | Level 1 |  |  |  |  |  |  | 381 |  |  | — |  |  | 381 |
Total |  | $ | 42,062 |  |  | $ | 100 |  |  | $ | (56) |  |  | $ | 42,487 |  |  | $ | 7,866 |  |  | $ | 34,621 |
The estimated fair value of debt securities included in cash equivalents and marketable securities are shown below by contractual maturity.
| Oct 26, 2025
| (In millions)
Less than one year | $ | 21,848 |
Due in 1 - 5 years | 33,104 |
Total | $ | 54,952 |
Schedule of Investments in a Continuous Unrealized Loss Position | The following table provides the breakdown of unrealized losses, aggregated by investment category and length of time that individual debt securities have been in a continuous loss position:
| Oct 26, 2025 |  | Jan 26, 2025
| Less than 12 Months |  |  |  |  |  | Less than 12 Months |  |  |  |
| Estimated Fair Value |  | Gross Unrealized Loss |  |  |  |  |  |  |  |  |  | Estimated Fair Value |  | Gross Unrealized Loss |  |  |  |  |  |  |  |
| (In millions)
Debt securities issued by the U.S. Treasury | $ | 1,223 |  |  | $ | — |  |  |  |  |  |  |  |  |  |  | $ | 6,315 |  |  | $ | (22) |  |  |  |  |  |  |  |  |
Corporate debt securities | 899 |  |  | (1) |  |  |  |  |  |  |  |  |  |  | 5,291 |  |  | (29) |  |  |  |  |  |  |  |  |
Debt securities issued by U.S. government agencies | 75 |  |  | — |  |  |  |  |  |  |  |  |  |  | 816 |  |  | (5) |  |  |  |  |  |  |  |  |
Total | $ | 2,197 |  |  | $ | (1) |  |  |  |  |  |  |  |  |  |  | $ | 12,422 |  |  | $ | (56) |  |  |  |  |  |  |  |  |

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