| Cover | Dec. 13, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 13, 2021 |
| Entity File Number | 001-39825 |
| Entity Registrant Name | GBS INC. |
| Entity Central Index Key | 0001725430 |
| Entity Tax Identification Number | 82-1512711 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 420 Lexington Ave |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10170 |
| City Area Code | (646) |
| Local Phone Number | 828-8258 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | GBS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
