Property, plant and equipment (Details Textual) - INR (₨) ₨ in Millions |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Disclosure of property, plant and equipments [Abstract] | ||
| Contractual commitments for acquisition of property, plant and equipment | ₨ 22,468 | ₨ 7,222 |
| Property, plant and equipment, pledged as security | 19,484 | 15,566 |
| Borrowing costs capitalised | ₨ 150 | ₨ 515 |