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NOTE 1 - NATURE OF OPERATIONS AND BASIS OF PRESENTATION (Details)
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Apr. 19, 2013
Mar. 31, 2014
USD ($)
Mar. 31, 2013
USD ($)
Mar. 31, 2010
Mar. 31, 2014
Interest [Member]
Bricoleur Note Payable [Member]
USD ($)
Mar. 31, 2014
Investor Relations Services [Member]
USD ($)
Apr. 08, 2014
Subsequent Event [Member]
Additional Shares Issued for Extinguishment of Debt [Member]
Apr. 03, 2014
Subsequent Event [Member]
Securities Purchase Agreement [Member]
USD ($)
Jun. 08, 2014
Subsequent Event [Member]
USD ($)
Mar. 31, 2014
IGC - Mauritius (IGC-M) [Member]
Dec. 30, 2011
H&F Ironman Limited ("HK Ironman") [Member]
Jan. 18, 2011
H&F Ironman Limited ("HK Ironman") [Member]
Mar. 31, 2013
Techni Bharathi Limited ("TBL") [Member]
Mar. 07, 2008
Techni Bharathi Limited ("TBL") [Member]
Mar. 31, 2013
Techni Bharathi Limited ("TBL") [Member]
Dec. 30, 2011
Linxi H&F Economic and Trade Co. ("PRC Ironman") [Member]
Mar. 31, 2013
Linxi H&F Economic and Trade Co. ("PRC Ironman") [Member]
Oct. 01, 2009
Sricon Infrastructure Private Limited (Sricon) [Member]
USD ($)
Mar. 07, 2008
Sricon Infrastructure Private Limited (Sricon) [Member]
Jun. 21, 2012
Sricon Infrastructure Private Limited (Sricon) [Member]
acre
Mar. 31, 2012
Sricon Infrastructure Private Limited (Sricon) [Member]
Mar. 31, 2011
Sricon Infrastructure Private Limited (Sricon) [Member]
Mar. 31, 2010
Sricon Infrastructure Private Limited (Sricon) [Member]
Feb. 19, 2009
IGC India Mining and Trading Private Limited ("IGC-IMT") [Member]
Jun. 04, 2009
IGC Materials Private Limited ("IGC-MPL") [Member]
Jun. 04, 2009
IGC Logistic Private Limited ("IGC-LPL") [Member]
Oct. 09, 2012
Bricoleur Note Payable [Member]
Oct. 16, 2009
Bricoleur Note Payable [Member]
Mar. 31, 2011
Bricoleur Note Payable [Member]
Dec. 31, 2010
Bricoleur Note Payable [Member]
Mar. 31, 2014
Bricoleur Note Payable [Member]
USD ($)
Mar. 31, 2011
American Capital Venture and Maplehurst Investment Group [Member]
Mar. 31, 2011
Red Chip Companies [Member]
USD ($)
Mar. 31, 2011
Consideration for Extension of Loans [Member]
Feb. 28, 2011
Consideration for the Exchange of Notes [Member]
USD ($)
Mar. 31, 2011
Stock Issued for Repayment of Principal and Interest [Member]
USD ($)
Apr. 05, 2012
Shares Issued for Extinguishment of Debt [Member]
USD ($)
Mar. 31, 2014
Medical Marketing Group (MMGI) [Member]
USD ($)
Mar. 31, 2014
At The Market (ATM) Agreement [Member]
USD ($)
Mar. 31, 2014
Directors and Employees [Member]
Dec. 30, 2011
H&F Ironman Limited ("HK Ironman") [Member]
Dec. 30, 2011
H&F Ironman Limited ("HK Ironman") [Member]
USD ($)
Mar. 31, 2014
ESOP 2008 Omnibus Plan [Member]
USD ($)
Mar. 31, 2014
Zhang Hua [Member]
Linxi H&F Economic and Trade Co. ("PRC Ironman") [Member]
Jan. 18, 2011
Zhang Hua [Member]
Linxi H&F Economic and Trade Co. ("PRC Ironman") [Member]
Jan. 18, 2011
Zhang Hua [Member]
H&F Ironman Limited ("HK Ironman") [Member]
Mar. 31, 2014
Xu Jianjun [Member]
Linxi H&F Economic and Trade Co. ("PRC Ironman") [Member]
Jan. 18, 2011
Xu Jianjun [Member]
H&F Ironman Limited ("HK Ironman") [Member]
Mar. 31, 2014
Linxi H&F Economic and Trade Co. ("PRC Ironman") [Member]
USD ($)
Mar. 31, 2014
Linxi H&F Economic and Trade Co. ("PRC Ironman") [Member]
CNY
Jan. 18, 2011
Linxi H&F Economic and Trade Co. ("PRC Ironman") [Member]
sqkm
NOTE 1 - NATURE OF OPERATIONS AND BASIS OF PRESENTATION (Details) [Line Items]                                                                                                      
Equity Method Investment, Ownership Percentage                   100.00%   100.00%     100.00%   95.00%       22.00% 22.00% 22.00%                                     100.00%   80.00%     20.00%        
Number of Subsidiaries     4                                                                                                
Number of Investments     1                                                                                                
Sale of Stock, Percentage of Ownership after Transaction                     100.00%     77.00%   95.00%   22.00% 63.00%         100.00% 100.00% 100.00%                                       75.00%   20.00%      
Sale of Stock, Percentage of Ownership before Transaction                                   63.00%                                                                  
Extinguishment of Debt, Amount (in Dollars)                                   $ 17,900,000                                                                  
Noncontrolling Interest, Ownership Percentage by Parent                                       22.00%                                                              
Area of Land                                       5                                                             2.2
Equity Method Investment, Percent of Ownership Aquired                         23.10%                                                                            
Capital                                                                                                 273,800 2,000,000  
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners                                                                                         5.00%            
Number of Securities Listed     3                                                                                                
Common Stock, Par or Stated Value Per Share (in Dollars per share)   $ 0.0001 $ 0.0001                                                                                                
Trading Securities, Description     (1) Common Stock, $.0001 par value (ticker symbol: IGC) ("Common Stock"), (2) redeemable warrants to purchase Common Stock (ticker symbol: IGC.WT), and (3) units consisting of one share of Common Stock and two redeemable warrants to purchase Common Stock (ticker symbol: IGC.U).As reported on Form 8-K on February 5, 2013, the Company voluntarily delisted the units from the NYSE MKT and requested its unit holders to contact IGC to get the existing units separated into Common Stock and Warrants.Each warrant entitles the holder to purchase one share of Common Stock at an exercise price of $5.00.The warrants expire on March 6, 2015.                                                                                                
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share)     $ 5.00                                                                                                
Warrant, Expiration Date     Mar. 06, 2015                                                                                                
Warrants, call warrant description     The Company has a right to call the warrants, provided the Common Stock has traded at a closing price of at least $8.50 per share for any 20 trading days within a 30-trading day period ending on the third business day prior to the date on which notice of redemption is given. If the Company calls the warrants, either the holder will have to exercise the warrants by purchasing the Common Stock from the Company for $5.00 or the warrants will expire.                                                                                                
Common Stock, Shares, Issued (in Shares)   9,373,569 6,980,098 1,298,921                                                                                              
Common Stock, Shares, Outstanding (in Shares)   9,373,569 6,980,098 1,298,921                                                                                              
Stock Issued During Period, Shares, Issued for Services (in Shares)           36,193                                                   3,000 914         36,193                          
Stock Issued During Period, Value, Issued for Services (in Dollars)           40,800                                                     8,039         40,800                          
Stock Issued During Period, Shares, Other (in Shares)                                                     34,200 53,000 68,850 20,000 205,200     40,000 68,850 157,000                              
Stock Issued During Period, Value, Other (in Dollars)   40,800                                                                 419,985 798,176                              
Stock Issued During Period, Shares, Acquisitions (in Shares)                                                                                 3,150,000                    
Business Combination, Contingent Consideration Arrangements, Description                                                                                 In addition, the Stock Purchase Agreement provides for a contingent payment by IGC of $1 million provided certain post-closing covenants are met within 30 days of closing. These post-closing covenants were not met within 30 days of closing and therefore the Company did not make the payment.                    
Business Combination, Contingent Consideration, Liability, Current (in Dollars)                                                                                   1,000,000                  
Business Combination, Assets and Liabilities Arising from Contingencies, Description                                                                                 i) $1.5 million in cash or stock, which is contingent on IGC achieving earnings growth of at least 30% from the previous year's closing audit (i.e., March 31, 2011); and (ii) $1.5 million in cash or stock, which is contingent on IGC achieving earnings growth of at least 30% from the previous year's closing audit (i.e., March 31, 2012). If either of the foregoing annual targets were missed, there would still be a payout of $3 million provided IGC achieves a cumulative earnings growth of 69% between fiscal years 2011 and 2013. These post-closing covenants were not met and therefore the Company did not make the payments.                    
Debt Conversion, Original Debt, Amount (in Dollars)         270,522                                                               2,232,627.79                            
Extinguishment of Debt, Reduction in Annual Interest (in Dollars)                                                                         612,000                            
Debt Conversion, Converted Instrument, Shares Issued (in Shares)         205,200   12,026                                       30,000                   442,630                            
Convertible Notes Payable (in Dollars)                                                             1,800,000                                        
Contract Description of Terms   Under the ATM Agency Agreement, IGC may offer and sell shares of our common stock having an aggregate offering price of up to $4 million from time to time. Sales of the shares, if any, will be made by means of ordinary brokers' transactions on the NYSE MKT at market prices, or as otherwise agreed with Enclave. The Company estimated that the net proceeds from the sale of the shares of common stock that were being offered were going to be approximately $3.6 million.             entered into a new At The Market ("the June ATM") Agency Agreement with Enclave Capital LLC. Under the June ATM Agency Agreement, IGC may offer and sell shares of our common stock having an aggregate offering price of up to $1.5 million, for a total of $5.5 million of gross proceeds from the combined ATM agreements.                                                                                    
At The Market Agreement, Maximum Offering Price (in Dollars)   4,000,000             1,500,000                                                                                    
Estimated Net Proceeds from At The Market Agreement (in Dollars)   3,600,000             5,500,000                                                                                    
Stock Issued During Period, Shares, New Issues (in Shares)               750,000                                                             1,256,005                        
Stock Issued During Period, Value, New Issues (in Dollars)               $ 506,250                                                             $ 1,251,896                        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)                                                                                     269,345                
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)                                                                                     $ 7.80                
Stock Issued During Period, Shares, Share-based Compensation, Gross (in Shares)                                                                               625,148                      
Stockholders' Equity, Reverse Stock Split 10:1 reverse split