Employee benefits (Details) ₨ in Millions, $ in Millions |
Mar. 31, 2026
INR (₨)
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2024
INR (₨)
|
|---|---|---|---|---|
| Employee benefits | ||||
| Gratuity payable | ₨ 26 | ₨ 47 | ₨ 25 | |
| Compensated absences | 164 | 154 | 135 | |
| Non-current provisions for employee benefits | ₨ 190 | $ 2 | ₨ 201 | ₨ 160 |