Fair Value Measurements - Additional Information (Details)	12 Months Ended
	Jan. 31, 2023 USD ($)	Jan. 31, 2022 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Transfers into level 1 to level 2, assets	$ 0
Transfers into level 2 to level 1, assets	0
Transfers into level 1 to level 2, liabilities	0
Transfers into level 2 to level 1, liabilities	0
Transfers into level 3, assets	0
Transfers out of level 3, assets	0
Transfers into level 3, liabilities	0	$ 0
Transfers out of level 3, liabilities	0
Investment in venture capital funds	$ 3,300,000	$ 2,000,000.0
Level 3 | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Goodwill and intangible assets measurement input	17.5
Short-term investment
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Fair value, investment	The fair value of the short-term investment, which is a guaranteed investment certificate, is based on its purchase price plus one half of a percent calculated annually.