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NOTE 1 - OVERVIEW (Tables) | 9 Months Ended
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Dec. 31, 2012
Schedule Of Subsidiaries [Table Text Block] | The financial statements of the following subsidiaries have been considered for consolidation.
Subsidiaries |  | Immediate holding company |  | Country of Incorporation |  | Percentage of holding as of Dec. 31, 2012 |  |  | Percentage of holding as of March 31, 2012 |
IGC – Mauritius ("IGC-M") |  | IGC |  | Mauritius |  |  | 100 |  |  |  | 100 |
IGC India Mining and Trading Private Limited ("IGC-IMT") |  | IGC-M |  | India |  |  | 100 |  |  |  | 100 |
IGC Logistic Private Limited ("IGC-LPL") |  | IGC-M |  | India |  |  | 100 |  |  |  | 100 |
IGC Materials Private Limited ("IGC-MPL") |  | IGC-M |  | India |  |  | 100 |  |  |  | 100 |
H&F Ironman Limited (“HK Ironman”) |  | IGC |  | Hong Kong |  |  | 100 |  |  |  | 100 |
Linxi H&F Economic and Trade Co. ("PRC Ironman") |  | HK Ironman |  | Peoples’ Republic of China |  |  | 95 |  |  |  | 95 |
Techni Bharathi Limited (“TBL”) |  | IGC-M |  | India |  |  | 77 |  |  |  | 77 |

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- Definition Schedule of subsidiary companies and percentage of ownership. + References No definition available. + Details
Name: | igc_ScheduleOfSubsidiariesTableTextBlock
Namespace Prefix: | igc_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration