| Cover | Nov. 22, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 22, 2024 |
| Entity File Number | 001-13341 |
| Entity Registrant Name | Titan Pharmaceuticals Inc. |
| Entity Central Index Key | 0000910267 |
| Entity Tax Identification Number | 94-3171940 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 10 East 53rd St. |
| Entity Address, Address Line Two | Suite 3001 |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10022 |
| City Area Code | (786) |
| Local Phone Number | 769-7512 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.001 par value per share |
| Trading Symbol | TTNP |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
