Equity - Shares Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Shares Available for Grant (in thousands)
Shares available for grant, beginning (in shares)	45,446,000	32,870,000	412,000
Shares authorized (in shares)	15,619,000	14,397,000	54,970,000
Shares ceased to be available for issuance (in shares)			(15,696,000)
Options granted (in shares)	(642,000)	0	(877,000)
Options canceled (in shares)	713,000	1,629,000	3,406,000
Repurchase of unvested common stock (in shares)			40,000
Shares available for grant, ending (in shares)	52,989,000	45,446,000	32,870,000	412,000
Number of Options Outstanding (in thousands)
Shares outstanding, beginning (in shares)	42,043,000	64,575,000	80,903,000
Options granted (in shares)	642,000	0	877,000
Options exercised (in shares)	(6,118,000)	(20,903,000)	(13,799,000)
Options canceled (in shares)	(713,000)	(1,629,000)	(3,406,000)
Shares outstanding, ending (in shares)	35,854,000	42,043,000	64,575,000	80,903,000
Weighted- Average Exercise Price
Shares outstanding, beginning balance (in dollars per share)	$ 7.53	$ 7.04	$ 6.21
Granted (in dollars per share)	207.56		34.83
Exercises (in dollars per share)	6.50	6.08	3.90
Canceled (in shares)	8.02	6.80	7.04
Shares outstanding, ending balance (in dollars per share)	$ 11.27	$ 7.53	$ 7.04	$ 6.21
Weighted-average remaining contractual life	5 years 10 months 24 days	6 years 10 months 24 days	7 years 8 months 12 days	8 years 7 months 6 days
Aggregate Intrinsic Value (in thousands)
Aggregate intrinsic value	$ 5,237,549	$ 11,283,299	$ 17,138,896	$ 1,546,313
Vested and exercisable (in shares)	30,261,000
Vested and exercisable, weighted average share price (in dollars per share)	$ 8.20
Vested and exercisable, weighted average remaining contractual life	5 years 9 months 18 days
Vested and exercisable, intrinsic value	$ 4,492,574
RSUs
Shares Available for Grant (in thousands)
RSU's granted (in shares)	(10,788,000)	(4,026,000)	(9,553,000)
Shares withheld (in shares)	1,149,000
RSU's forfeited (in shares)	1,492,000	576,000	168,000