| Document and Entity Information | Mar. 20, 2024 |
| Cover [Abstract] | |
| Security Exchange Name | NASDAQ |
| Amendment Flag | false |
| Entity Central Index Key | 0001501756 |
| Current Fiscal Year End Date | --12-31 |
| Document Type | 8-K |
| Document Period End Date | Mar. 20, 2024 |
| Entity Registrant Name | Adverum Biotechnologies, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-36579 |
| Entity Tax Identification Number | 20-5258327 |
| Entity Address, Address Line One | 100 Cardinal Way |
| Entity Address, City or Town | Redwood City |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94063 |
| City Area Code | (650) |
| Local Phone Number | 656-9323 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock |
| Trading Symbol | ADVM |
| Entity Emerging Growth Company | false |
