Retirement benefits - Net Gratuity Cost (Detail) ₨ in Millions, $ in Millions |
12 Months Ended | |||
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Mar. 31, 2026
INR (₨)
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Mar. 31, 2026
USD ($)
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Mar. 31, 2025
INR (₨)
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Mar. 31, 2024
INR (₨)
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| Defined Benefit Plan Disclosure [Line Items] | ||||
| Past service cost amortized | ₨ 1,011.3 | $ 10.8 | ||
| Gratuity | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Service cost | 3,717.2 | 39.6 | ₨ 3,213.5 | ₨ 1,968.8 |
| Interest cost | 1,551.2 | 16.5 | 1,313.5 | 981.3 |
| Past service cost amortized | 1,114.9 | 11.9 | 0.0 | 0.0 |
| (Gains)/Losses on Curtailment | (223.6) | (2.4) | 0.0 | 0.0 |
| Expected return on plan assets | (1,340.3) | (14.3) | (1,283.4) | (1,036.1) |
| Actuarial (gains)/losses | (38.1) | (0.4) | 374.2 | (3,196.5) |
| Net gratuity cost | ₨ 4,781.3 | $ 50.9 | ₨ 3,617.8 | ₨ (1,282.5) |
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- Definition Defined benefit plan gains losses on curtailment. No definition available.
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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 Amount of prior service cost (credit) 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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/disclosureRef
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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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