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Cash Equivalents, Investments and Strategic Investments - Narrative (Details) - USD ($) | Jul. 31, 2025 | Jan. 31, 2025
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Debt Securities, Available-for-sale, Unrealized Loss Position |  |
Contractual maturities of available-for-sale debt securities, maximum | 36 months |
Gross unrealized losses on available-for-sale marketable debt securities | $ 0 | $ 0
Upward adjustments | 18,300,000 |
Impairments | 60,500,000 |
Prepaid Expenses and Other Current Assets |  |
Debt Securities, Available-for-sale, Unrealized Loss Position |  |
Interest receivable, current | $ 24,200,000 | $ 23,600,000

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479081/326-30-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-4 + Details
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