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Fair Value Measurements (Tables) | 3 Months Ended
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Apr. 30, 2026
Fair Value Disclosures [Abstract] |
Schedule of Fair Value Hierarchy for Financial Assets and Liabilities Measured at Fair Value on Recurring Basis | The following table presents the fair value hierarchy for financial assets and liabilities measured at fair value on a recurring basis as of April 30, 2026 (in thousands):
|  | Level 1 |  | Level 2 |  |  |  | Total
Assets |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |
Money market funds |  | $ | 560,643 |  |  | $ | — |  |  |  |  | $ | 560,643 |
Short-term investments: |  |  |  |  |  |  |  |
Certificates of deposit |  | — |  |  | 27,669 |  |  |  |  | 27,669 |
Asset-backed securities |  | — |  |  | 205,966 |  |  |  |  | 205,966 |
Commercial paper |  | — |  |  | 44,753 |  |  |  |  | 44,753 |
Corporate notes and bonds |  | — |  |  | 3,289,706 |  |  |  |  | 3,289,706 |
Foreign government bonds |  | — |  |  | 219,696 |  |  |  |  | 219,696 |
Municipal securities |  | — |  |  | 41,456 |  |  |  |  | 41,456 |
U.S. agency obligations |  | — |  |  | 1,488 |  |  |  |  | 1,488 |
U.S. Treasury securities |  | — |  |  | 1,585,405 |  |  |  |  | 1,585,405 |
Foreign currency derivative contracts |  | — |  |  | 59 |  |  |  |  | 59 |
Total financial assets |  | $ | 560,643 |  |  | $ | 5,416,198 |  |  |  |  | $ | 5,976,841 |
Liabilities |  |  |  |  |  |  |  |
Foreign currency derivative contracts |  | $ | — |  |  | $ | (791) |  |  |  |  | $ | (791) |
Total financial liabilities |  | $ | — |  |  | $ | (791) |  |  |  |  | $ | (791) |
The following table presents the fair value hierarchy for financial assets and liabilities measured at fair value on a recurring basis as of January 31, 2026 (in thousands):
|  | Level 1 |  | Level 2 |  |  |  | Total
Assets |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |
Money market funds |  | $ | 286,504 |  |  | $ | — |  |  |  |  | $ | 286,504 |
U.S. Treasury securities |  | — |  |  | 2,611 |  |  |  |  | 2,611 |
Short-term investments: |  |  |  |  |  |  |  |
Certificates of deposit |  | — |  |  | 27,690 |  |  |  |  | 27,690 |
Asset-backed securities |  | — |  |  | 261,917 |  |  |  |  | 261,917 |
Commercial paper |  | — |  |  | 75,375 |  |  |  |  | 75,375 |
Corporate notes and bonds |  | — |  |  | 3,154,559 |  |  |  |  | 3,154,559 |
Foreign government bonds |  | — |  |  | 233,401 |  |  |  |  | 233,401 |
Municipal securities |  | — |  |  | 37,453 |  |  |  |  | 37,453 |
U.S. agency obligations |  | — |  |  | 11,720 |  |  |  |  | 11,720 |
U.S. Treasury securities |  | — |  |  | 1,337,466 |  |  |  |  | 1,337,466 |
Foreign currency derivative contracts |  | — |  |  | 822 |  |  |  |  | 822 |
Total financial assets |  | $ | 286,504 |  |  | $ | 5,143,014 |  |  |  |  | $ | 5,429,518 |
Liabilities |  |  |  |  |  |  |  |
Foreign currency derivative contracts |  | $ | — |  |  | $ | (3,187) |  |  |  |  | $ | (3,187) |
Total financial liabilities |  | $ | — |  |  | $ | (3,187) |  |  |  |  | $ | (3,187) |
Schedule of Fair Value of Outstanding Derivative Instruments | The fair value of our outstanding derivative instruments is summarized below (in thousands):
| April 30, 2026 |  | January 31, 2026
Notional amount of foreign currency derivative contracts | $ | 120,426 |  |  | $ | 354,696 |
Fair value of foreign currency derivative contracts | $ | 121,209 |  |  | $ | 356,320 |

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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 182 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-182 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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