Cover
| Cover | Sep. 01, 2021 | Oct. 31, 2019 |
| Cover [Abstract] | ||
| Document Type | 8-K | |
| Document Period End Date | Sep. 1, 2021 | |
| Entity Registrant Name | Asana, Inc. | |
| Entity Incorporation, State or Country Code | DE | |
| Entity File Number | 001-39495 | |
| Entity Tax Identification Number | 26-3912448 | |
| Entity Address, Address Line One | 633 Folsom Street, | |
| Entity Address, Address Line Two | Suite 100 | |
| Entity Address, City or Town | San Francisco, | |
| Entity Address, State or Province | CA | |
| Entity Address, Postal Zip Code | 94107 | |
| City Area Code | (415) | |
| Local Phone Number | 525-3888 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Title of 12(b) Security | Class A Common Stock, $0.00001 par value | |
| Trading Symbol | ASAN | |
| Entity Emerging Growth Company | true | |
| Entity Ex Transition Period | false | |
| Entity Central Index Key | 0001477720 | |
| Amendment Flag | false | |
| Security Exchange Name | NYSE |