Provisions - Additional Information (Detail)	12 Months Ended
Provisions - Additional Information (Detail)	Mar. 31, 2026
Interest Rate Restriction Act [member] \| Minimum [member]
Disclosure of other provisions [line items]
Interest rates on loans	15.00%
Interest Rate Restriction Act [member] \| Maximum [member]
Disclosure of other provisions [line items]
Interest rates on loans	20.00%
Act regulating the receipt of contributions, receipt of deposits and interest rates [member] \| Maximum [member]
Disclosure of other provisions [line items]
Interest rates on loans	29.20%