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DEPOSITS AND ADVANCES (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Mar. 31, 2025
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Deposits And Advances Abstract |  |
Statutory Advances | $ 48 | $ 49

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- References No definition available. + Details
Name: | igc_DepositsAndAdvancesAbstract
Namespace Prefix: | igc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Statutory advances. + References No definition available. + Details
Name: | igc_StatutoryAdvances
Namespace Prefix: | igc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant