| Document And Entity Information | Mar. 20, 2023 |
| Document Information Line Items | |
| Entity Registrant Name | India Globalization Capital, Inc. |
| Trading Symbol | IGC |
| Document Type | 8-K |
| Current Fiscal Year End Date | --03-31 |
| Amendment Flag | false |
| Entity Central Index Key | 0001326205 |
| Document Period End Date | Mar. 20, 2023 |
| Entity Emerging Growth Company | false |
| Entity Incorporation, State or Country Code | MD |
| Entity File Number | 001-32830 |
| Entity Tax Identification Number | 20-2760393 |
| Entity Address, Address Line One | 10224 Falls Road |
| Entity Address, City or Town | Potomac |
| Entity Address, State or Province | MD |
| Entity Address, Postal Zip Code | 20854 |
| City Area Code | (301) |
| Local Phone Number | 983-0998 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $.0001 par value |
| Security Exchange Name | NYSEAMER |
