Stockholders' Equity and Equity Incentive Plans - Schedule of Stock by Class Reserved for Future Issuance (Details) - shares	Jan. 31, 2023	Jan. 31, 2022
Class of Stock [Line Items]
Number of shares available for future issuance (in shares)	92,819,161	80,832,845
Stock options
Class of Stock [Line Items]
Number of shares available for future issuance (in shares)	4,800,616	6,195,205
RSUs
Class of Stock [Line Items]
Number of shares available for future issuance (in shares)	21,868,533	5,546,366
ESPP
Class of Stock [Line Items]
Number of shares available for future issuance (in shares)	2,851,856	1,784,687
2011 and 2019 Plan
Class of Stock [Line Items]
Number of shares available for future issuance (in shares)	51,367,359	56,620,720
2019 Employee Stock Purchase Plan | ESPP
Class of Stock [Line Items]
Number of shares available for future issuance (in shares)	11,930,797	10,685,867