Commitments and contingencies - Schedule of undrawn commitment (Details) - JPY (¥) ¥ in Millions |
Mar. 31, 2025 |
Mar. 31, 2024 |
---|---|---|
Commitments and contingencies [Abstract] | ||
Total amount of commitment line borrowing | ¥ 8,900 | ¥ 6,200 |
Balance of executed borrowed commitment line | 751 | 0 |
Balance of unexecuted commitment line | ¥ 8,149 | ¥ 6,200 |