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Earnings Per Equity Share - Additional Information (Detail) - ₨ / shares | 12 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Required transfer of after tax Indian GAAP profit to a non-distributable statutory reserve in order to pay dividends without prior RBI approval | 25.00% |  |
Dividends declared |  | ₨ 19.5 | ₨ 19
Employee Stock Option |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Potential equity shares excluded from the calculation of diluted earnings per share, average outstanding balance | 38,227,099 | 52,921,114 | 49,152,741
Indian GAAP [Member] |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Dividend payout, description of restrictions | As per the RBI guidelines, the dividend payout cannot exceed 35% of net income as calculated under Indian GAAP. |  |
Indian GAAP [Member] | Maximum |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |
Dividend payout, maximum pay out as a percentage of net income calculated under Indian GAAP | 35.00% |  |

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- Definition Percentage of after tax Indian GAAP profit required transfer to a non-distributable statutory reserve for payment of dividends without prior RBI approval. + References No definition available. + Details
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- Definition Maximum amount of Dividend payout as a percentage of net income under Indian GAAP. + References No definition available. + Details
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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- Definition Disclosure of statutory restrictions on the payment of dividends as prescribed by the National Association of Insurance Commissioners or state regulatory authorities, amounts not available for future dividend payments, and amount of dividends paid. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477908/944-505-50-1 + Details
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