| Cover | May 20, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 20, 2022 |
| Entity File Number | 001-35817 |
| Entity Registrant Name | VYANT BIO, INC. |
| Entity Central Index Key | 0001349929 |
| Entity Tax Identification Number | 04-3462475 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 2 Executive Campus |
| Entity Address, Address Line Two | 2370 State Route 70 |
| Entity Address, Address Line Three | Suite 310 |
| Entity Address, City or Town | Cherry Hill |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 08002 |
| City Area Code | (201) |
| Local Phone Number | 479-8126 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | VYNT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
