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Cash Equivalents and Investments (Tables) | 9 Months Ended
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Oct. 31, 2025
Investments, Debt and Equity Securities [Abstract] |
Schedule of Amortized Costs, Unrealized Gains and Losses and Estimated Fair Value of Cash Equivalents and Short-term Investments | The following tables present the estimated fair value of cash equivalents and short-term investments:
| As of October 31, 2025 |  | As of January 31, 2025
| (dollars in millions)
Cash equivalents: |  |  |
Money market funds (Level 1) | $ | 422 |  |  | $ | 225 |
Certificates of deposit (Level 2) | — |  |  | 23 |
Total cash equivalents | 422 |  |  | 248 |
Level 2: |  |  |
Short-term investments (Available-for-sale): |  |  |
U.S. treasury securities | 1,517 |  |  | 1,788 |
Corporate debt securities | 239 |  |  | 281 |
Certificates of deposit | 62 |  |  | 45 |
Total short-term investments | 1,818 |  |  | 2,114 |
Total | $ | 2,240 |  |  | $ | 2,362 |
Schedule of Contractual Maturities of Short-term Investments | The following table presents the contractual maturities of the Company’s short-term investments:
| As of October 31, 2025 |  |
| Estimated Fair Value |  |  |  |
| (dollars in millions) |  |  |  |
Due within one year | $ | 1,511 |  |  |  |  |
Due between one to five years | 307 |  |  |  |  |
Total | $ | 1,818 |  |  |  |  |

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