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Cash, Cash Equivalents, and Investments - Additional Information (Details) $ in Millions | Apr. 30, 2026 USD ($) security | Jan. 31, 2026 USD ($) security
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Available-for-sale securities in an unrealized loss position | 89 | 43
Securities in unrealized loss position | $ | $ 146.4 | $ 64.6
Securities in a continuous net loss position for 12 months or longer | 0 | 0

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