Retirement benefits - Net Gratuity Cost (Detail) - Gratuity ₨ in Millions, $ in Millions |
12 Months Ended | |||
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Mar. 31, 2025
INR (₨)
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Mar. 31, 2025
USD ($)
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Mar. 31, 2024
INR (₨)
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Mar. 31, 2023
INR (₨)
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| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | ₨ 3,213.5 | $ 37.6 | ₨ 1,968.8 | ₨ 1,398.6 |
| Interest cost | 1,313.5 | 15.4 | 981.3 | 773.4 |
| Expected return on plan assets | (1,283.4) | (15.0) | (1,036.1) | (668.2) |
| Actuarial (gains)/losses | 374.2 | 4.4 | (3,196.5) | 137.6 |
| Net gratuity cost | ₨ 3,617.8 | $ 42.4 | ₨ (1,282.5) | ₨ 1,641.4 |
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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. No definition available.
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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