Employee benefits (Details 3) - INR (₨) ₨ in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|---|---|---|---|---|
| Defined Benefit Plan Value Increase Decrease [Domain] | ||||
| Projected benefit obligation at the end of the year | ₨ 529 | ₨ 446 | ₨ 382 | ₨ 299 |
| Plan assets at the end of the year | (503) | (399) | (357) | ₨ (271) |
| Funded status amount of liability recognized in the Balance Sheet | ₨ 26 | ₨ 47 | ₨ 25 |