| Dec 31,
2017 | Dec 31,
2018 | Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 |
|---|
| Cash and deposits | - | 414 | 409 | 469 | 4,197 | 3,045 | 2,846 |
|---|
| Accounts receivable - trade | - | 128 | 203 | 276 | 309 | 377 | 470 |
|---|
| Prepaid expenses | - | 14 | 25 | 23 | 58 | 93 | 97 |
|---|
| Consumption taxes refund receivable | - | - | - | - | 62 | 22 | - |
|---|
| Other | - | 0 | 2 | 0 | 4 | 5 | 10 |
|---|
| Allowance for doubtful accounts | - | -2 | - | - | - | -0 | - |
|---|
| Current assets | - | 655 | 787 | 821 | 4,709 | 3,542 | 3,422 |
|---|
| Buildings | - | 37 | 40 | 43 | 53 | 204 | 217 |
|---|
| Vehicles | - | 24 | 26 | 21 | 21 | 8 | 8 |
|---|
| Tools, furniture and fixtures | - | 19 | 29 | 48 | 61 | 104 | 108 |
|---|
| Leased assets | - | - | - | - | - | 8 | 8 |
|---|
| Construction in progress | - | - | - | - | 4 | - | 6 |
|---|
| Accumulated depreciation | - | -24 | -38 | -44 | -66 | -57 | -95 |
|---|
| Property, plant and equipment | - | 56 | 58 | 68 | 73 | 266 | 252 |
|---|
| Software | - | 4 | 6 | 4 | 2 | 558 | 464 |
|---|
| Software in progress | - | - | - | - | 381 | 183 | 221 |
|---|
| Intangible assets | - | 4 | 6 | 4 | 384 | 742 | 684 |
|---|
| Leasehold and guarantee deposits | - | - | - | 12 | 260 | 244 | 238 |
|---|
| Other | - | 1 | 3 | 1 | 1 | 1 | 0 |
|---|
| Investments and other assets | - | 10 | 15 | 13 | 262 | 245 | 239 |
|---|
| Non-current assets | - | 70 | 79 | 85 | 718 | 1,252 | 1,175 |
|---|
| Assets | - | 725 | 866 | 905 | 5,426 | 4,795 | 4,597 |
|---|
| Short-term borrowings | - | 50 | 97 | 100 | 100 | 100 | 250 |
|---|
| Current portion of long-term borrowings | - | 68 | 65 | 76 | 50 | 96 | 66 |
|---|
| Accounts payable - other | - | 31 | 56 | 79 | 199 | 238 | 189 |
|---|
| Accrued expenses | - | 16 | 23 | 33 | 74 | 110 | 79 |
|---|
| Contract liabilities | - | - | - | - | - | 36 | 42 |
|---|
| Lease liabilities | - | - | - | - | - | 3 | 3 |
|---|
| Income taxes payable | - | 3 | 1 | 1 | 35 | 22 | 32 |
|---|
| Accrued consumption taxes | - | 16 | 20 | 51 | - | - | 100 |
|---|
| Deposits received | - | 2 | 5 | 3 | 5 | 7 | 14 |
|---|
| Guarantee deposits received | - | - | - | - | 244 | 244 | 244 |
|---|
| Current liabilities | - | 274 | 405 | 397 | 771 | 855 | 1,017 |
|---|
| Long-term borrowings | - | 146 | 107 | 90 | 28 | 248 | 184 |
|---|
| Lease liabilities | - | - | - | - | - | 5 | 2 |
|---|
| Deferred tax liabilities | - | - | - | 1 | 2 | 0 | 2 |
|---|
| Asset retirement obligations | - | 8 | 8 | 8 | 3 | 2 | 6 |
|---|
| Non-current liabilities | - | 168 | 115 | 100 | 33 | 255 | 194 |
|---|
| Liabilities | - | 442 | 520 | 496 | 804 | 1,110 | 1,211 |
|---|
| Share capital | - | 307 | 100 | 100 | 2,345 | 2,395 | 2,477 |
|---|
| Legal capital surplus | - | 297 | 183 | 183 | 2,429 | 2,478 | 2,560 |
|---|
| Other capital surplus | - | - | - | - | 194 | 194 | 194 |
|---|
| Capital surplus | - | 297 | 183 | 183 | 2,623 | 2,672 | 2,754 |
|---|
| Retained earnings brought forward | - | -321 | 63 | 166 | -346 | -1,383 | -1,846 |
|---|
| Retained earnings | - | -321 | 63 | 166 | -346 | -1,383 | -1,846 |
|---|
| Treasury shares | - | - | - | -41 | -0 | -0 | -0 |
|---|
| Shareholders' equity | - | 283 | 346 | 408 | 4,622 | 3,684 | 3,385 |
|---|
| Share acquisition rights | - | - | 1 | 1 | 1 | 1 | 1 |
|---|
| Net assets | 108 | 283 | 347 | 409 | 4,622 | 3,685 | 3,385 |
|---|
| Liabilities and net assets | - | 725 | 866 | 905 | 5,426 | 4,795 | 4,597 |
|---|