Cash and Cash Equivalents, Investments and Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2023	Jan. 31, 2023
Fair Value Assets and Liabilities Measure On Recurring And Nonrecurring Basis [Line Items]
Investments, weighted average maturity		18 months
Investments, term	2 years
Debt and equity securities	$ 400,846	$ 400,846	$ 528,127
Level 3 | Strategic Investments
Fair Value Assets and Liabilities Measure On Recurring And Nonrecurring Basis [Line Items]
Debt and equity securities	$ 13,900	$ 13,900	$ 12,500