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Investments - Schedule of Investment (Parenthetical) (Detail) - INR (₨) ₨ in Millions | Mar. 31, 2020 | Mar. 31, 2019
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Disclosure of detailed information about financial instruments [abstract] |  |
Term Deposits in Lien with banks-Current | ₨ 796 | ₨ 463
Term Deposits in Lien with banks-Non-Current | ₨ 5 |

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- Definition Term deposits including deposits in lien with banks. + References No definition available. + Details
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- Definition Term Deposits Including Deposits In Lien With Banks Noncurrent. + References No definition available. + Details
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