Investments and Fair Value Measurements - Schedule of Gains and Losses on Strategic Investments (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
Jul. 31, 2026 |
Jul. 31, 2025 |
|
| Fair Value Disclosures [Abstract] | ||||
| Unrealized losses recognized on privately held equity securities, including impairment | $ 0 | $ 0 | $ 0 | $ (1,579) |
| Unrealized losses | 0 | 0 | 0 | (1,579) |
| Realized gains recognized on sales of privately held equity securities | 0 | 0 | 36,362 | 0 |
| Realized gains | 0 | 0 | 36,362 | 0 |
| Gains (losses) on strategic investments, net | 0 | 0 | 36,362 | (1,579) |
| Unrealized losses recognized during the reporting period on privately held equity securities still held at the reporting date | $ 0 | $ 0 | $ 0 | $ (1,579) |