Equity - Shares Reserved For Future Issuance (Details) - shares shares in Thousands	Jul. 31, 2024	Jan. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (in shares)	134,374	121,461
Employee stock purchase rights under the 2020 ESPP
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (in shares)	16,759	13,764
2012 Equity Incentive Plan: | Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (in shares)	23,480	26,767
2012 Equity Incentive Plan: | RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (in shares)	123	789
2020 Equity Incentive Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (in shares)	1,617	602
2020 Equity Incentive Plan | RSUs
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (in shares)	22,309	20,168
2020 Equity Incentive Plan | Shares available for future grants
Share-based Compensation Arrangement by Share-based Payment Award
Common stock reserved for future issuances (in shares)	70,086	59,371