Cash Equivalents and Investments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 30, 2024	Jan. 31, 2024
Debt Securities, Available-for-sale, Unrealized Loss Position
Contractual maturities of available-for-sale debt securities, maximum	36 months
Prepaid Expenses and Other Current Assets
Debt Securities, Available-for-sale, Unrealized Loss Position
Interest receivable, current	$ 22.6	$ 24.2

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.

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

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