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NOTE 1 - OVERVIEW (Detail) - Schedule of Subsidiaries
 3 Months Ended 12 Months Ended
Jun. 30, 2012
Mar. 31, 2012
IGC - Mauritius (IGC-M) [Member]
    
Immediate Holding Company IGC  
Country of Incorportaion Mauritius  
Percent of Holding 100.00% 100.00%
IGC India Mining and Trading Private Limited ("IGC-IMT") [Member]
    
Immediate Holding Company IGC-M  
Country of Incorportaion India  
Percent of Holding 100.00% 100.00%
IGC Logistic Private Limited ("IGC-LPL") [Member]
    
Immediate Holding Company IGC-M  
Country of Incorportaion India  
Percent of Holding 100.00% 100.00%
IGC Materials Private Limited ("IGC-MPL") [Member]
    
Immediate Holding Company IGC-M  
Country of Incorportaion India  
Percent of Holding 100.00% 100.00%
H&F Ironman Limited ("HK Ironman") [Member]
    
Immediate Holding Company IGC  
Country of Incorportaion Hong Kong  
Percent of Holding 100.00% 100.00%
Linxi H&F Economic and Trade Co. ("PRC Ironman") [Member]
    
Immediate Holding Company HK Ironman  
Country of Incorportaion Peoples' Republic of China  
Percent of Holding 95.00% 95.00%
Techni Bharathi Limited ("TBL") [Member]
    
Immediate Holding Company IGC-M  
Country of Incorportaion India  
Percent of Holding 77.00% 77.00%