Deferred tax assets and liabilities (Details 4) - INR (₨) ₨ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Disclosure Of Deferred tax assets and liabilities [Abstract] | |||
| Profit/(Loss) before income taxes | ₨ (941) | ₨ (286) | ₨ 352 |
| Enacted tax rates in India | 25.17% | 25.17% | 25.17% |
| Computed expected tax expense / (benefit) | ₨ (237) | ₨ (72) | ₨ 89 |
| Effect of: | |||
| Recognition of previously unrecognized deferred tax asset on temporary differences | 0 | 0 | (2) |
| Difference on account differential tax rates in different jurisdictions | 9 | 49 | (23) |
| Effect of Unrecognized business loss including reversal of previously recognized DTA on business loss | 438 | 383 | 157 |
| Effect of expenses that are not deductible in determining taxable profit | 99 | 33 | 27 |
| Utilization of previously unrecognized temporary differences | 85 | 58 | 0 |
| Permanent difference on account of coupon charges on CCDs | (36) | (39) | (30) |
| Others | 67 | 87 | (35) |
| Tax expense (income), continuing operations | ₨ 425 | ₨ 499 | ₨ 183 |