Share-based Payments - Schedule of Award Activity Related to Other Awards (Details) - ¥ / shares |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Phantom stock appreciation rights (PSARs) | |||
| Number of shares | |||
| As of beginning of the year (in shares) | 0 | 0 | 217,530 |
| Forfeited/expired after vesting (in shares) | 0 | 0 | (217,530) |
| As of end of the year (in shares) | 0 | 0 | 0 |
| Weighted average exercise price (JPY) | |||
| As of beginning of the year (in JPY per share) | ¥ 0 | ¥ 0 | ¥ 5,956 |
| Forfeited/expired after vesting (in JPY per share) | 0 | 0 | 6,428 |
| As of end of the year (in JPY per share) | ¥ 0 | ¥ 0 | ¥ 0 |
| Liability-settled long-term incentive plan (LTIP) | |||
| Number of shares | |||
| As of beginning of the year (in shares) | 371,668 | 395,762 | 367,642 |
| Granted (in shares) | 481,374 | 341,518 | 197,798 |
| Forfeited before vesting (in shares) | (47,122) | (53,520) | (38,245) |
| Vested (in shares) | (457,680) | (312,092) | (341,148) |
| Transfer from Equity-Settled LTIP (in shares) | 0 | 0 | 209,715 |
| As of end of the year (in shares) | 348,240 | 371,668 | 395,762 |