Financial Instruments - Additional Information (Detail) ₨ in Millions, $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2025
USD ($)
|
Mar. 31, 2024
INR (₨)
|
|
| Financial Instruments [Line Items] | |||
| Estimated fair values of bank guarantees | ₨ 12,875.5 | $ 150.7 | ₨ 10,085.1 |
| Margins in the form of cash and fixed deposit available to the bank to reimburse losses realized under guarantees | 365,600.0 | 298,500.0 | |
| Outstanding Undrawn commitments to provide loans and financing to customers | 1,222,200.0 | 14,300.0 | 1,175,500.0 |
| Unconditional cancellable commitments | 10,335,600.0 | $ 121,000.0 | 9,108,600.0 |
| Guarantees | |||
| Financial Instruments [Line Items] | |||
| Estimated fair values of bank guarantees | ₨ 11,413.0 | ₨ 9,066.2 | |
| Minimum | |||
| Financial Instruments [Line Items] | |||
| Remaining tenure of guarantees outstanding | 1 day | ||
| Maximum | |||
| Financial Instruments [Line Items] | |||
| Remaining tenure of guarantees outstanding | 30 years 9 months 18 days |