Cover Page
| Cover Page | May 06, 2020 | Oct. 31, 2019 |
| Document Information [Line Items] | ||
| Document Type | 8-K | |
| Document Period End Date | May 6, 2020 | |
| Entity Registrant Name | ALTERYX, INC. | |
| Entity Incorporation, State or Country Code | DE | |
| Entity File Number | 001-38034 | |
| Entity Tax Identification Number | 90-0673106 | |
| Entity Address, Address Line One | 3345 Michelson Drive, | |
| Entity Address, Address Line Two | Suite 400, | |
| Entity Address, City or Town | Irvine, | |
| Entity Address, State or Province | CA | |
| Entity Address, Postal Zip Code | 92612 | |
| 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 | |
| Title of 12(b) Security | Class A Common Stock, $0.0001 par value per share | |
| Trading Symbol | AYX | |
| Security Exchange Name | NYSE | |
| Entity Emerging Growth Company | false | |
| Entity Central Index Key | 0001689923 | |
| Amendment Flag | false |