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Cash Equivalents, Investments, and Strategic Investments - Narrative (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Apr. 30, 2026 | Apr. 30, 2025 | Jan. 31, 2026
Investments, Debt and Equity Securities [Abstract] |  |  |
Interest receivable, current | $ 21,300,000 |  | $ 16,900,000
Contractual maturities of available-for-sale debt securities, maximum | 60 months |  |
Gross unrealized losses on available-for-sale marketable debt securities | $ 0 |  | $ 0
Upward adjustments | 0 | $ 0 |
Cumulative upward adjustments | 18,300,000 |  |
Impairments | $ 84,800,000 |  |

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- Definition Debt Securities, Available-For-Sale, Maturity Term, Maximum + References No definition available. + Details
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- Definition Amount of cumulative impairment loss on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 + Details
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- Definition Amount of gain from upward price adjustment on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 + Details
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- Definition Carrying amount as of the balance sheet date of current interest earned but not received. Also called accrued interest or accrued interest receivable. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480657/210-10-S50-2 + Details
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