Employee Stock Plans - Schedule of Stock Option Activity (Details) - USD ($)	12 Months Ended
Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Number of Options
Beginning balance in shares)	5,081,180	6,121,268
Granted (in shares)	0	0
Exercised (in shares)	(1,732,084)	(990,063)
Forfeited (in shares)	(16,648)	(50,025)
Ending balance (in shares)	3,332,448	5,081,180	6,121,268
Vested and expected to vest (in shares)	3,331,285
Exercisable, number (in shares)	3,248,175
Weighted Average Exercise Price
Beginning balance (in dollars per share)	$ 19.70	$ 17.57
Exercised (in dollars per share)	9.16	6.98
Forfeited (in dollars per share)	34.64	10.97
Ending balance (in dollars per share)	25.10	$ 19.70	$ 17.57
Vested and expected to vest (in dollars per share)	25.10
Exercisable (in dollars per share)	$ 24.85
Options, outstanding, weighted average remaining contractual life	4 years 8 months 8 days	5 years 2 months 19 days	6 years 1 month 2 days
Options, vested and expected to vest, weighted average remaining contractual life	4 years 8 months 8 days
Options, exercisable, weighted average remaining contractual life	4 years 8 months 4 days
Options, outstanding, intrinsic value	$ 17,719,000	$ 133,540,000	$ 223,306,000
Options, vested and expected to vest, intrinsic value	17,719,000
Options, exercisable, intrinsic value	17,719,000
Options, exercised in period, intrinsic value	$ 35,750	$ 34,970	$ 72,850

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.