Equity - Option Activity Rollforward (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Number of Options Outstanding (in thousands)
Shares outstanding, beginning (in shares)	27,369,000	35,854,000	42,043,000
Granted (shares)	1,037,000	0	642,000
Exercised (in shares)	(6,608,000)	(8,357,000)	(6,118,000)
Canceled (in shares)	(145,000)	(128,000)	(713,000)
Shares outstanding, ending (in shares)	21,653,000	27,369,000	35,854,000	42,043,000
Weighted- Average Exercise Price
Shares outstanding, beginning balance (in dollars per share)	$ 12.35	$ 11.27	$ 7.53
Granted (in dollars per share)	163.17		207.56
Exercised (in dollars per share)	6.79	6.84	6.50
Canceled (in dollars per share)	78.83	70.59	8.02
Shares outstanding, ending balance (in dollars per share)	$ 20.83	$ 12.35	$ 11.27	$ 7.53
Weighted-average remaining contractual life (years)	4 years 2 months 12 days	5 years	5 years 10 months 24 days	6 years 10 months 24 days
Aggregate Intrinsic Value (in thousands)
Aggregate intrinsic value	$ 3,493,648	$ 5,023,664	$ 5,237,549	$ 11,283,299
Vested and expected to vest (in shares)	21,653,000
Vested and expected to vest, weighted-average exercise price (in dollars per share)	$ 20.83
Vested and expected to vest, weighted-average remaining contractual life (in years)	4 years 2 months 12 days
Vested and expected to vest, aggregate intrinsic value	$ 3,493,648
Exercisable (in shares)	20,645,000
Exercisable, weighted-average exercise price (in dollars per share)	$ 13.53
Exercisable, weighted-average remaining contractual life (in years)	4 years 1 month 6 days
Exercisable, intrinsic value	$ 3,478,059