| Document and Entity Information | Jun. 04, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jun. 4, 2021 |
| Entity Registrant Name | Chinook Therapeutics, Inc. |
| Entity Central Index Key | 0001435049 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-37345 |
| Entity Incorporation State Country Code | DE |
| Entity Tax Identification Number | 94-3348934 |
| Entity Address, Address Line One | 1600 Fairview Avenue East |
| Entity Address, Address Line Two | Suite 100 |
| Entity Address, City or Town | Seattle |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98102 |
| City Area Code | (206) |
| Local Phone Number | 485-7051 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, par value $0.0001 per share |
| Trading Symbol | KDNY |
| Security Exchange Name | NASDAQ |
