| Cover Page | Jan. 11, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Document Period End Date | Jan. 11, 2021 |
| Entity Registrant Name | TRICIDA, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-38558 |
| Entity Tax Identification Number | 46-3372526 |
| Entity Address, Address Line One | 7000 Shoreline Court |
| Entity Address, Address Line Two | Suite 201 |
| Entity Address, City or Town | South San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94080 |
| City Area Code | 415 |
| Local Phone Number | 429-7800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, par value $0.001 per share |
| Trading Symbol | TCDA |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001595585 |
