Equity Plans and Stock-based Compensation - Restricted Stock Units Activity (Details) - Restricted stock units	6 Months Ended
	Jul. 31, 2023 $ / shares shares
Number of Shares
Outstanding, beginning balance (in shares) | shares	12,935,413
Granted (in shares) | shares	13,600,840
Vested (in shares) | shares	(2,813,610)
Forfeited (in shares) | shares	(959,444)
Outstanding, ending balance (in shares) | shares	22,763,199
Weighted Average Grant Date Fair Value per Share
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 15.02
Granted (in dollars per share) | $ / shares	8.68
Vested (in dollars per share) | $ / shares	14.37
Forfeited (in dollars per share) | $ / shares	13.97
Outstanding, ending balance (in dollars per share) | $ / shares	$ 11.36