Equity - Schedule of Stock Reserved For Future Issuance (Details) - shares	Apr. 30, 2022	Jan. 31, 2022	Jan. 31, 2021
Class of Stock [Line Items]
Options issued and outstanding (in shares)	15,797,000	17,146,000
Shares available for issuance under Equity Incentive Plans (in shares)	22,996,000	18,248,000	4,796,000
Class A and Class B common stock
Class of Stock [Line Items]
Options issued and outstanding (in shares)		17,146,000
Shares reserved for issuance to charitable organizations (in shares)	1,636,000	1,636,000
Common stock reserved for future issuance (in shares)	51,642,000	43,581,000
RSUs | Class A and Class B common stock
Class of Stock [Line Items]
Share-based compensation awards other than options (in shares)	6,473,000	3,280,000
Shares subject to the 2021 ESPP | Class A and Class B common stock
Class of Stock [Line Items]
Share-based compensation awards other than options (in shares)	4,740,000	3,271,000