Commitments, liabilities and contingencies - Additional Information (Detail) - INR (₨) ₨ in Millions |
Mar. 31, 2025 |
Mar. 31, 2024 |
|---|---|---|
| Disclosure of contingent liabilities [line items] | ||
| Accrued tax expense | ₨ 0 | |
| Periphery charges | 1,114 | ₨ 0 |
| Commissioning Of Wind And Solar Energy Projects | ||
| Disclosure of contingent liabilities [line items] | ||
| Capital commitment | 56,528 | 56,857 |
| Financial gurantees given for renewable projects | PPA | ||
| Disclosure of contingent liabilities [line items] | ||
| Financial guarantees renewable projects | ₨ 48,017 | ₨ 31,733 |