Investments - Schedule of Strategic Investments (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	$ 122,364	$ 13,538
Debt securities	15,431	5,130
Strategic investments	137,795	18,668
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	107,076	0
Debt securities	15,431	5,130
Strategic investments	122,507	5,130
Measurement Alternative
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities	15,288	13,538
Debt securities	0	0
Strategic investments	$ 15,288	$ 13,538

Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and investment in debt security measured at amortized cost (held-to-maturity), classified as noncurrent.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

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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.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
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