| Jan 31,
2021 | Jan 31,
2022 | Jan 31,
2023 | Jan 31,
2024 |
|---|
| Cash and deposits | - | 267 | 313 | 449 |
|---|
| Notes receivable - trade | - | 3 | 2 | 1 |
|---|
| Accounts receivable - trade | - | 170 | 199 | 237 |
|---|
| Electronically recorded monetary claims - operating | - | - | - | 4 |
|---|
| Merchandise and finished goods | - | 23 | 27 | 25 |
|---|
| Work in process | - | 15 | 23 | 28 |
|---|
| Raw materials and supplies | - | 51 | 46 | 78 |
|---|
| Advance payments to suppliers | - | 17 | 36 | 41 |
|---|
| Prepaid expenses | - | 7 | 15 | 29 |
|---|
| Other | - | 18 | 2 | 5 |
|---|
| Current assets | - | 571 | 663 | 898 |
|---|
| Buildings, net | - | 688 | 662 | 645 |
|---|
| Structures, net | - | 17 | 15 | 14 |
|---|
| Machinery and equipment, net | - | 281 | 341 | 386 |
|---|
| Vehicles, net | - | 3 | 6 | 6 |
|---|
| Tools, furniture and fixtures, net | - | 7 | 8 | 8 |
|---|
| Land | - | 425 | 425 | 425 |
|---|
| Leased assets, net | - | 64 | 45 | 25 |
|---|
| Construction in progress | - | 0 | - | 19 |
|---|
| Property, plant and equipment | - | 1,485 | 1,503 | 1,527 |
|---|
| Software | - | 26 | 16 | 24 |
|---|
| Software in progress | - | - | 1 | - |
|---|
| Other | - | 2 | 1 | 1 |
|---|
| Intangible assets | - | 27 | 19 | 25 |
|---|
| Investment securities | - | 0 | 3 | - |
|---|
| Investments in capital | - | 0 | 0 | 0 |
|---|
| Long-term prepaid expenses | - | 1 | 23 | 43 |
|---|
| Deferred tax assets | - | - | 5 | 21 |
|---|
| Other | - | 6 | 13 | 12 |
|---|
| Investments and other assets | - | 8 | 43 | 77 |
|---|
| Non-current assets | - | 1,521 | 1,564 | 1,629 |
|---|
| Assets | - | 2,092 | 2,227 | 2,527 |
|---|
| Accounts payable - trade | - | 51 | 62 | 74 |
|---|
| Current portion of bonds payable | - | - | - | 100 |
|---|
| Current portion of long-term borrowings | - | 247 | 385 | 333 |
|---|
| Lease liabilities | - | 21 | 21 | 18 |
|---|
| Accounts payable - other | - | 88 | 155 | 141 |
|---|
| Accrued expenses | - | 1 | 2 | 3 |
|---|
| Income taxes payable | - | 30 | 54 | 61 |
|---|
| Contract liabilities | - | - | 7 | 8 |
|---|
| Deposits received | - | 8 | 8 | 9 |
|---|
| Unearned revenue | - | 0 | 0 | 0 |
|---|
| Provision for bonuses | - | 6 | 15 | 20 |
|---|
| Other | - | 72 | 41 | 42 |
|---|
| Current liabilities | - | 530 | 751 | 811 |
|---|
| Bonds payable | - | 100 | 100 | - |
|---|
| Long-term borrowings | - | 1,189 | 1,047 | 1,252 |
|---|
| Lease liabilities | - | 49 | 28 | 10 |
|---|
| Provision for retirement benefits | - | 4 | 5 | 7 |
|---|
| Asset retirement obligations | - | 20 | 20 | 21 |
|---|
| Other | - | 6 | 6 | 6 |
|---|
| Non-current liabilities | - | 1,385 | 1,206 | 1,295 |
|---|
| Liabilities | - | 1,916 | 1,957 | 2,106 |
|---|
| Share capital | - | 151 | 151 | 151 |
|---|
| Legal capital surplus | - | 53 | 53 | 53 |
|---|
| Capital surplus | - | 53 | 53 | 53 |
|---|
| Reserve for special depreciation | - | 76 | 54 | 33 |
|---|
| Retained earnings brought forward | - | -103 | 10 | 185 |
|---|
| Retained earnings | - | -27 | 65 | 218 |
|---|
| Shareholders' equity | - | 176 | 268 | 421 |
|---|
| Valuation difference on available-for-sale securities | - | - | 2 | - |
|---|
| Valuation and translation adjustments | - | - | 2 | - |
|---|
| Net assets | 56 | 176 | 270 | 421 |
|---|
| Liabilities and net assets | - | 2,092 | 2,227 | 2,527 |
|---|