Equity Plans and Stock-based Compensation - Narrative (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jul. 31, 2023 USD ($) shares	Jul. 31, 2023 USD ($) shares
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Unrecognized stock-based compensation cost | $	$ 228.5	$ 228.5
Period for recognition (in years)		2 years 11 months 19 days
2021 Equity Incentive Plan
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Common stock reserved (in shares)	44,405,539	44,405,539
Number of stock options granted (in shares)	0	0
Employee stock purchase plan
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Common stock reserved (in shares)	13,842,252	13,842,252