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Investments (Tables) | 9 Months Ended
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Oct. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Summary of Debt Securities | As of October 31, 2024, debt securities consisted of the following (in millions):
| Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Aggregate Fair Value
U.S. treasury securities | $ | 1,660 |  |  | $ | 5 |  |  | $ | (1) |  |  | $ | 1,664 |
U.S. agency obligations | 694 |  |  | 2 |  |  | 0 |  |  | 696 |
Corporate bonds | 3,058 |  |  | 12 |  |  | (2) |  |  | 3,068 |
Commercial paper | 566 |  |  | 0 |  |  | 0 |  |  | 566 |
Total debt securities | $ | 5,978 |  |  | $ | 19 |  |  | $ | (3) |  |  | $ | 5,994 |
Included in Cash and cash equivalents | $ | 148 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 148 |
Included in Marketable securities | $ | 5,830 |  |  | $ | 19 |  |  | $ | (3) |  |  | $ | 5,846 |
As of January 31, 2024, debt securities consisted of the following (in millions):
| Amortized Cost |  | Unrealized Gains |  | Unrealized Losses |  | Aggregate Fair Value
U.S. treasury securities | $ | 2,072 |  |  | $ | 4 |  |  | $ | (2) |  |  | $ | 2,074 |
U.S. agency obligations | 753 |  |  | 2 |  |  | (1) |  |  | 754 |
Corporate bonds | 2,496 |  |  | 9 |  |  | (5) |  |  | 2,500 |
Commercial paper | 1,232 |  |  | 0 |  |  | 0 |  |  | 1,232 |
Total debt securities | $ | 6,553 |  |  | $ | 15 |  |  | $ | (8) |  |  | $ | 6,560 |
Included in Cash and cash equivalents | $ | 759 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 759 |
Included in Marketable securities | $ | 5,794 |  |  | $ | 15 |  |  | $ | (8) |  |  | $ | 5,801 |
Contractual Maturity of Debt Securities | The fair values of debt securities, by remaining contractual maturity, were as follows (in millions):
| October 31, 2024
Due within 1 year | $ | 2,983 |
Due in 1 year through 5 years | 3,011 |
Total debt securities | $ | 5,994 |
Aggregate Fair Value and Gross Unrealized Losses for Debt Securities In Unrealized Loss Position | The following tables summarize the aggregate fair value and gross unrealized losses for all debt securities in an unrealized loss position, aggregated by investment category and the length of time that individual securities have been in a continuous loss position (in millions):
| As of October 31, 2024
| Less than 12 Months |  | 12 Months or Greater |  | Total
| Fair Value |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss
U.S. treasury securities | $ | 266 |  |  | $ | (1) |  |  | $ | 120 |  |  | $ | 0 |  |  | $ | 386 |  |  | $ | (1) |
U.S. agency obligations | 142 |  |  | 0 |  |  | 15 |  |  | 0 |  |  | 157 |  |  | 0 |
Corporate bonds | 640 |  |  | (2) |  |  | 184 |  |  | 0 |  |  | 824 |  |  | (2) |
Total | $ | 1,048 |  |  | $ | (3) |  |  | $ | 319 |  |  | $ | 0 |  |  | $ | 1,367 |  |  | $ | (3) |
| As of January 31, 2024
| Less than 12 Months |  | 12 Months or Greater |  | Total
| Fair Value |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss |  | Fair Value |  | Unrealized Loss
U.S. treasury securities | $ | 921 |  |  | $ | (2) |  |  | $ | 78 |  |  | $ | (1) |  |  | $ | 999 |  |  | $ | (3) |
U.S. agency obligations | 234 |  |  | 0 |  |  | 100 |  |  | (1) |  |  | 334 |  |  | (1) |
Corporate bonds | 921 |  |  | (3) |  |  | 171 |  |  | (1) |  |  | 1,092 |  |  | (4) |
Commercial paper | 5 |  |  | 0 |  |  | 0 |  |  | 0 |  |  | 5 |  |  | 0 |
Total | $ | 2,081 |  |  | $ | (5) |  |  | $ | 349 |  |  | $ | (3) |  |  | $ | 2,430 |  |  | $ | (8) |
Equity Investments | Equity investments consisted of the following (in millions):
| Condensed Consolidated Balance Sheets Location |  | October 31, 2024 |  | January 31, 2024
Money market funds | Cash and cash equivalents |  | $ | 849 |  |  | $ | 1,017 |
Non-marketable equity investments measured using the measurement alternative | Other assets |  | 242 |  |  | 248 |
Total equity investments |  |  | $ | 1,091 |  |  | $ | 1,265 |
Realized and Unrealized Gains and Losses With Equity Investments | Total realized and unrealized gains and losses associated with our equity investments were as follows (in millions):
| Three Months Ended October 31, |  | Nine Months Ended October 31,
2024 |  | 2023 |  | 2024 |  | 2023
Net realized gains (losses) recognized on equity investments sold (1) | $ | 0 |  |  | $ | (1) |  |  | $ | (3) |  |  | $ | 2 |
Net unrealized gains (losses) recognized on equity investments held as of the end of the period | 3 |  |  | (13) |  |  | (4) |  |  | (24) |
Total net gains (losses) recognized in Other income (expense), net | $ | 3 |  |  | $ | (14) |  |  | $ | (7) |  |  | $ | (22) |
(1)Reflects the difference between the sale proceeds and the carrying value of the equity investments at the beginning of the period.
Carrying Values Of Non-marketable Equity Investments | The carrying values for our non-marketable equity investments are summarized below (in millions):
| October 31, 2024 |  | January 31, 2024
Total initial cost | $ | 210 |  |  | $ | 213 |
Cumulative net unrealized gains (losses) | 32 |  |  | 35 |
Carrying value | $ | 242 |  |  | $ | 248 |

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