Equity Plans and Stock-based Compensation - Restricted Stock Units Activity (Details) - Restricted stock units	9 Months Ended
	Oct. 31, 2023 $ / shares shares
Number of Shares
Outstanding, beginning balance (in shares) | shares	12,935,413
Granted (in shares) | shares	15,171,450
Vested (in shares) | shares	(4,648,207)
Forfeited (in shares) | shares	(1,849,229)
Outstanding, ending balance (in shares) | shares	21,609,427
Weighted Average Grant Date Fair Value per Share
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 15.02
Granted (in dollars per share) | $ / shares	8.55
Vested (in dollars per share) | $ / shares	13.82
Forfeited (in dollars per share) | $ / shares	12.53
Outstanding, ending balance (in dollars per share) | $ / shares	$ 10.95