Stock - Activity in Options Available to be Granted Under Employee Stock Option Scheme (Detail) - Employee Stock Option - shares |
12 Months Ended | ||
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Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Options available to be granted, beginning of period | 32,491,917 | 54,214,165 | 81,992,420 |
| Equity shares allocated for grant under the plan | 95,000,000 | 0 | 0 |
| Options granted | (23,146,660) | (24,384,690) | (30,480,145) |
| Forfeited/lapsed | 4,476,527 | 2,662,442 | 2,701,890 |
| Options available to be granted, end of period | 108,821,784 | 32,491,917 | 54,214,165 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Gross number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The addition or reduction in the number of reserved shares that could potentially be issued under the option plan attributable to reasons other than grants, exercises, forfeitures, and expirations during the reporting period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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