Share-based Payments - Schedule of Stock Option Activities (Details) |
12 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2025
shares
¥ / shares
|
Mar. 31, 2024
shares
¥ / shares
|
Mar. 31, 2023
shares
¥ / shares
|
|
| Number of options (shares) | |||
| As of beginning of the year (in shares) | shares | 3,180,900 | 3,303,600 | 3,347,100 |
| Exercised (in shares) | shares | (12,000) | (122,700) | (43,500) |
| As of end of the year (in shares) | shares | 3,168,900 | 3,180,900 | 3,303,600 |
| Weighted average exercise price (JPY) | |||
| As of beginning of the year (in JPY per share) | ¥ / shares | ¥ 4,136 | ¥ 4,111 | ¥ 4,094 |
| Exercised (in JPY per share) | ¥ / shares | 3,712 | 3,464 | 2,802 |
| As of end of the year (in JPY per share) | ¥ / shares | ¥ 4,138 | ¥ 4,136 | ¥ 4,111 |