Common Stock and Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Details)	Jan. 31, 2022 shares
Class of Stock [Line Items]
Common stock reserved for future issuance and options and unvested RSUs outstanding (in shares)	43,100,764
Options and unvested RSUs outstanding
Class of Stock [Line Items]
Options and unvested RSUs outstanding (in shares)	14,209,825
Common stock, reserved for future issuance (in shares)	23,133,719
ESPP
Class of Stock [Line Items]
Common stock, reserved for future issuance (in shares)	5,757,220