Property and Equipment Depreciation Rate Over Estimated Useful Lives of Property and Equipment on Straight-Line Basis (Detail) |
12 Months Ended |
|---|---|
Mar. 31, 2025 | |
| Premises | |
| Property, Plant and Equipment [Line Items] | |
| Rate of depreciation | 1.67% |
| Software and systems | |
| Property, Plant and Equipment [Line Items] | |
| Rate of depreciation | 20.00% |
| Equipment and furniture | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Rate of depreciation | 10.00% |
| Equipment and furniture | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Rate of depreciation | 33.33% |