Deferred tax assets (DTA) (net) / deferred tax liabilities (DTL) (net) - Summary of Reconciliation of Tax Expense & Accounting Profit Multiplied By Tax Rate (Parenthetical) (Details) - INR (₨) ₨ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Reconciliation of average effective tax rate and applicable tax rate [abstract] | |||
| Applicable tax rate | 25.168% | 31.20% | 31.20% |
| Amount of net unrecognised deferred tax assets | ₨ 2,030 | ₨ 1,064 | ₨ 1,446 |