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Cash, Cash Equivalents, and Investments - Additional Information (Details) $ in Millions	Apr. 30, 2024 USD ($) security	Jan. 31, 2024 USD ($) security
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Available-for-sale securities in an unrealized loss position | security	109	70
Securities in unrealized loss position | $	$ 204.8	$ 108.7
Securities in a continuous net loss position for 12 months or longer | security	30	33
Securities in continuous unrealized loss position for more than 12 months | $	$ 0.1	$ 0.2

X

- Definition

Debt Securities, Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value

+ References

No definition available.

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- Definition

Debt Securities, Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value

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- Definition

Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479106/326-30-50-4

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- Definition

Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479106/326-30-50-4

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