Equity Incentive Plans and Employee Stock Purchase Plan - Schedule of Restricted Stock Unit Activity (Details) - Restricted Stock Units (RSUs)	3 Months Ended
	Apr. 30, 2024 $ / shares shares
Shares
Unvested - beginning of period (in shares) | shares	3,566,406
RSUs granted (in shares) | shares	956,647
RSUs vested (in shares) | shares	(399,213)
RSUs forfeited and canceled (in shares) | shares	(119,565)
Unvested - end of period (in shares) | shares	4,004,275
Weighted-Average Grant Date Fair Value per RSU
Unvested - beginning of period (in dollars per share) | $ / shares	$ 290.59
RSUs granted (in dollars per share) | $ / shares	353.42
RSUs vested (in dollars per share) | $ / shares	274.70
RSUs forfeited and canceled (in dollars per share) | $ / shares	295.72
Unvested - end of period (in dollars per share) | $ / shares	$ 308.32