Equity Plans and Stock-based Compensation - Restricted Stock Units Activity (Details) - Restricted stock units	9 Months Ended
	Oct. 31, 2022 $ / shares shares
Number of Shares
Outstanding, beginning balance (in shares) | shares	4,033,418
Granted (in shares) | shares	11,860,870
Vested (in shares) | shares	(2,152,624)
Forfeited (in shares) | shares	(711,405)
Outstanding, ending balance (in shares) | shares	13,030,259
Weighted Average Grant Date Fair Value per Share
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 26.27
Granted (in dollars per share) | $ / shares	12.82
Vested (in dollars per share) | $ / shares	19.80
Forfeited (in dollars per share) | $ / shares	18.02
Outstanding, ending balance (in dollars per share) | $ / shares	$ 15.55