| Document and Entity Information | Mar. 19, 2024 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001689923 |
| Current Fiscal Year End Date | --12-31 |
| Document Type | 8-K |
| Document Period End Date | Mar. 19, 2024 |
| Entity Registrant Name | ALTERYX, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-38034 |
| Entity Tax Identification Number | 90-0673106 |
| Entity Address, Address Line One | 17200 Laguna Canyon Road |
| Entity Address, City or Town | Irvine |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92618 |
| City Area Code | (888) |
| Local Phone Number | 836-4274 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A common stock, $0.0001 par value per share |
| Trading Symbol | AYX |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
