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Other Assets (Parenthetical) (Detail) ₨ in Millions, $ in Millions | 12 Months Ended |
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Mar. 31, 2022 INR (₨) | Mar. 31, 2021 INR (₨) | Mar. 31, 2022 USD ($)
Other Assets Disclosure [Line Items] |  |  |  |
Other assets | [1] | ₨ 114,420.9 | ₨ 89,850.5 | $ 1,508.0
Unrealized gain/(loss) recognized in non-interest revenue–other, net |  |  | 7,618.1 |
Unrealized gain/(loss) recognized in non-interest revenue–other, net |  | (7,633.5) |  |
Equity securities |  |  |  |
Other Assets Disclosure [Line Items] |  |  |  |
Other assets |  | 14,736.7 | 20,600.1 |
Equity securities | Non Marketable Equity Securities [Member] |  |  |  |
Other Assets Disclosure [Line Items] |  |  |  |
Other assets |  | ₨ 2,665.9 | ₨ 999.2 |
[1] | Others include equity securities with carrying value amounting to Rs. 20,600.1 million and Rs. 14,736.7 million as at March 31, 2021 and March 31, 2022, respectively. Equity securities include non-marketable equity securities carried at cost of Rs. 999.2 million and Rs. 2,665.9 million as at March 31, 2021 and March 31, 2022, respectively. Unrealized gain/(loss) recognized in non-interest revenue–other, net amount to Rs. 7,618.1 million and Rs. (7,633.5) million for the years ended March 31, 2021 and March 31, 2022, respectively.

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