| Jul 31,
2021 | Jul 31,
2022 | Jul 31,
2023 | Jul 31,
2024 |
|---|
| Cash and deposits | - | 1,153 | 1,165 | 2,444 |
|---|
| Accounts receivable from completed construction contracts and contract assets | - | 137 | 804 | - |
|---|
| Notes receivable, accounts receivable from completed construction contracts, and contract assets-CA | - | - | - | 432 |
|---|
| Real estate for sale | - | - | 529 | 371 |
|---|
| Costs on construction contracts in progress | - | 18 | 1 | 2 |
|---|
| Costs on construction contracts in progress | - | 18 | 1 | 2 |
|---|
| Supplies | - | 1 | 1 | 0 |
|---|
| Supplies | - | 1 | 1 | 0 |
|---|
| Advance payments to suppliers | - | 7 | 17 | 42 |
|---|
| Other | - | 21 | 56 | 62 |
|---|
| Prepaid expenses | - | 46 | 46 | 49 |
|---|
| Allowance for doubtful accounts | - | -1 | -1 | -1 |
|---|
| Accounts receivable - other | - | 10 | 10 | 16 |
|---|
| Current assets | - | 1,425 | 2,628 | 3,418 |
|---|
| Consumption taxes refund receivable | - | 32 | - | - |
|---|
| Other | - | 21 | 56 | 62 |
|---|
| Allowance for doubtful accounts | - | -1 | -1 | -1 |
|---|
| Current assets | - | 1,425 | 2,628 | 3,418 |
|---|
| Buildings, net | - | 1,947 | 1,854 | 1,792 |
|---|
| Land | - | 1,475 | 1,686 | 1,686 |
|---|
| Structures, net | - | 164 | 148 | 133 |
|---|
| Machinery and equipment, net | - | 102 | 90 | 80 |
|---|
| Property, plant and equipment | - | 3,709 | 3,802 | 3,714 |
|---|
| Vehicles, net | - | 1 | 0 | - |
|---|
| Tools, furniture and fixtures, net | - | 7 | 6 | 5 |
|---|
| Land | - | 1,475 | 1,686 | 1,686 |
|---|
| Leased assets, net | - | 5 | 4 | 3 |
|---|
| Construction in progress | - | 9 | 13 | 16 |
|---|
| Property, plant and equipment | - | 3,709 | 3,802 | 3,714 |
|---|
| Intangible assets | - | 450 | 416 | 387 |
|---|
| Leasehold interests in land | - | 421 | 394 | 366 |
|---|
| Software | - | 26 | 21 | 19 |
|---|
| Right of using facilities and other | - | 2 | 2 | 2 |
|---|
| Intangible assets | - | 450 | 416 | 387 |
|---|
| Deferred tax assets | - | 257 | 292 | 270 |
|---|
| Investment securities | - | - | 3 | 3 |
|---|
| Long-term loans receivable | - | 27 | 24 | 22 |
|---|
| Investments and other assets | - | 806 | 821 | 884 |
|---|
| Long-term prepaid expenses | - | 325 | 305 | 382 |
|---|
| Leasehold and guarantee deposits | - | 197 | 197 | 206 |
|---|
| Deferred tax assets | - | 257 | 292 | 270 |
|---|
| Investments and other assets | - | 806 | 821 | 884 |
|---|
| Non-current assets | - | 4,965 | 5,039 | 4,986 |
|---|
| Assets | - | 6,390 | 7,667 | 8,404 |
|---|
| Accounts payable for construction contracts | - | 295 | 760 | 601 |
|---|
| Current portion of long-term loans payable | - | 140 | 169 | 255 |
|---|
| Bonds payable of guarantee deposits received | - | 20 | 10 | - |
|---|
| Accounts payable - other | - | 43 | 43 | 99 |
|---|
| Current portion of long-term loans payable | - | 140 | 169 | 255 |
|---|
| Income taxes payable | - | 47 | 106 | 101 |
|---|
| Lease liabilities | - | 1 | 1 | 1 |
|---|
| Advances received on construction contracts in progress | - | 79 | 185 | 135 |
|---|
| Accounts payable - other | - | 43 | 43 | 99 |
|---|
| Provision for bonuses | - | 76 | 81 | 102 |
|---|
| Accrued expenses | - | 45 | 36 | 42 |
|---|
| Provision for warranties for completed construction | - | - | 2 | 12 |
|---|
| Income taxes payable | - | 47 | 106 | 101 |
|---|
| Other | - | 5 | 5 | 5 |
|---|
| Accrued consumption taxes | - | - | 66 | 39 |
|---|
| Current liabilities | - | 852 | 1,643 | 1,525 |
|---|
| Advances received on construction contracts in progress | - | 79 | 185 | 135 |
|---|
| Advances received | - | 62 | 115 | 111 |
|---|
| Deposits received | - | 39 | 39 | 23 |
|---|
| Provision for bonuses | - | 76 | 81 | 102 |
|---|
| Provision for warranties for completed construction | - | - | 2 | 12 |
|---|
| Provision for loss on construction contracts | - | - | 26 | - |
|---|
| Other | - | 5 | 5 | 5 |
|---|
| Current liabilities | - | 852 | 1,643 | 1,525 |
|---|
| Bonds payable | - | 510 | 500 | 500 |
|---|
| Long-term borrowings | - | 1,468 | 1,591 | 1,336 |
|---|
| Provision for retirement benefits | - | 62 | 75 | 83 |
|---|
| Lease liabilities | - | 4 | 3 | 2 |
|---|
| Provision for retirement benefits for directors (and other officers) | - | 173 | 179 | 185 |
|---|
| Provision for retirement benefits | - | 62 | 75 | 83 |
|---|
| Asset retirement obligations | - | 86 | 89 | 88 |
|---|
| Provision for retirement benefits for directors (and other officers) | - | 173 | 179 | 185 |
|---|
| Other | - | 43 | 37 | 32 |
|---|
| Asset retirement obligations | - | 86 | 89 | 88 |
|---|
| Non-current liabilities | - | 2,833 | 2,979 | 2,778 |
|---|
| Long-term leasehold deposits received | - | 487 | 506 | 551 |
|---|
| Other | - | 43 | 37 | 32 |
|---|
| Non-current liabilities | - | 2,833 | 2,979 | 2,778 |
|---|
| Liabilities | - | 3,685 | 4,622 | 4,303 |
|---|
| Share capital | - | 33 | 33 | 119 |
|---|
| Capital surplus | - | 570 | 570 | 834 |
|---|
| Other capital surplus | - | 570 | 570 | 748 |
|---|
| Capital surplus | - | 570 | 570 | 834 |
|---|
| Retained earnings | - | 2,451 | 2,792 | 3,148 |
|---|
| Legal retained earnings | - | - | 3 | 8 |
|---|
| Retained earnings brought forward | - | 2,451 | 2,790 | 3,140 |
|---|
| Retained earnings | - | 2,451 | 2,792 | 3,148 |
|---|
| Treasury shares | - | -350 | -350 | - |
|---|
| Shareholders' equity | - | 2,704 | 3,045 | 4,101 |
|---|
| Net assets | 2,391 | 2,704 | 3,045 | 4,101 |
|---|
| Liabilities and net assets | - | 6,390 | 7,667 | 8,404 |
|---|