Financial risk management objectives and policies - Summary of Change in Interest Rates on Financial Liabilities (Detail) - INR |
12 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2025
USD ($)
BasisPoints
|
Mar. 31, 2024
USD ($)
BasisPoints
|
Mar. 31, 2023
USD ($)
BasisPoints
|
|
| Disclosure Of Change In Interest Rates On Financial Liabilities Explanatory [Line Items] | |||
| Increase / decrease in basis points | BasisPoints | 50 | 50 | 50 |
| Effect on profit/(loss) before tax | $ | $ 1,750,000,000 | $ 1,402,000,000 | $ 727,000,000 |