Stockholders’ Equity and Equity Incentive Plans - Summary of Restricted Stock Units Activity Under Equity Incentive Plan (Details) - RSUs	6 Months Ended
	Jul. 31, 2022 $ / shares shares
Unvested RSUs
Beginning balance (in shares) | shares	5,546,366
Granted (in shares) | shares	10,737,425
Vested (in shares) | shares	(1,906,359)
Cancelled/forfeited (in shares) | shares	(826,734)
Ending balance (in shares) | shares	13,550,698
Weighted- Average Grant Date Fair Value Per Share
Beginning balance (in dollars per share) | $ / shares	$ 232.58
Granted (in dollars per share) | $ / shares	110.99
Vested (in dollars per share) | $ / shares	189.17
Cancelled/forfeited (in dollars per share) | $ / shares	173.54
Ending balance (in dollars per share) | $ / shares	$ 145.93