Equity - Schedule of Shares Reserved For Future Issuance (Details) - shares shares in Thousands	Jul. 31, 2022	Jan. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (shares)	118,855	105,310
Employee stock purchase rights under the 2020 ESPP
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (shares)	11,148	8,209
2012 Equity Incentive Plan: | Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (shares)	37,521	42,043
2012 Equity Incentive Plan: | RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (shares)	3,493	4,530
2020 Equity Incentive Plan: | Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (shares)	642	0
2020 Equity Incentive Plan: | RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (shares)	10,844	5,082
2020 Equity Incentive Plan: | Pool
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (shares)	55,207	45,446