| Document and Entity Information | Feb. 23, 2024 |
| Cover [Abstract] | |
| Security Exchange Name | NASDAQ |
| Amendment Flag | false |
| Entity Central Index Key | 0001641489 |
| Document Type | 8-K |
| Document Period End Date | Feb. 23, 2024 |
| Entity Registrant Name | vTv Therapeutics Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-37524 |
| Entity Tax Identification Number | 47-3916571 |
| Entity Address, Address Line One | 3980 Premier Drive |
| Entity Address, Address Line Two | Suite 310 |
| Entity Address, City or Town | High Point |
| Entity Address, State or Province | NC |
| Entity Address, Postal Zip Code | 27265 |
| City Area Code | (336) |
| Local Phone Number | 841-0300 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A Common Stock, par value $0.01 per share |
| Trading Symbol | VTVT |
| Entity Emerging Growth Company | false |
