| Mar 31, 2018 | Mar 31, 2019 | Mar 31, 2020 | Mar 31, 2021 | Mar 31, 2022 | Mar 31, 2023 | Mar 31, 2024 |
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Cash and deposits | - | 3,171 | 2,690 | 3,055 | 3,582 | 3,012 | 3,954 |
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Notes and accounts receivable - trade, and contract assets | - | - | - | - | 2,358 | 3,295 | 3,033 |
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Accounts receivable - trade | - | - | - | - | 1,669 | 2,351 | 2,410 |
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Operational investment securities | - | - | 10 | 40 | 40 | 80 | 181 |
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Raw materials and supplies | - | 217 | 217 | 212 | 336 | 374 | 454 |
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Merchandise and finished goods | - | 89 | 67 | 72 | 28 | 77 | 129 |
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Prepaid expenses | - | - | - | - | - | 10 | 17 |
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Work in process | - | 430 | 454 | 363 | 105 | 329 | 196 |
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Short-term loans receivable from subsidiaries and associates | - | - | - | - | - | 330 | 730 |
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Raw materials and supplies | - | 217 | 217 | 212 | 336 | 374 | 454 |
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Current portion of long-term loans receivable from subsidiaries and associates | - | - | - | - | - | 34 | 78 |
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Accounts receivable - other | - | 235 | 23 | 22 | 379 | 469 | 413 |
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Other | - | 280 | 44 | 155 | 153 | 106 | 859 |
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Income taxes refund receivable | - | - | - | - | - | 3 | - |
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Other | - | 280 | 44 | 155 | 153 | 106 | 859 |
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Allowance for doubtful accounts | - | - | - | - | - | - | -19 |
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Current assets | - | 6,778 | 5,503 | 6,083 | 6,982 | 7,741 | 9,199 |
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Buildings | - | - | - | - | - | 40 | 40 |
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Accumulated depreciation | - | - | - | - | - | -4 | -8 |
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Buildings, net | - | - | - | - | - | 36 | 32 |
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Buildings and structures | - | 3,296 | 3,336 | 3,355 | 3,777 | 4,221 | 4,304 |
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Tools, furniture and fixtures | - | 7,089 | 7,590 | 7,729 | 8,359 | 8,945 | 9,271 |
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Accumulated depreciation | - | - | - | - | - | -4 | -7 |
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Tools, furniture and fixtures, net | - | - | - | - | - | 7 | 6 |
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Machinery, equipment and vehicles | - | 4,520 | 4,581 | 4,453 | 4,894 | 5,074 | 5,198 |
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Construction in progress | - | 20 | 93 | 1,278 | 179 | 140 | 348 |
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Tools, furniture and fixtures | - | 7,089 | 7,590 | 7,729 | 8,359 | 8,945 | 9,271 |
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Accumulated depreciation | - | - | - | - | - | -4 | -7 |
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Tools, furniture and fixtures, net | - | - | - | - | - | 7 | 6 |
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Property, plant and equipment | - | 5,356 | 5,274 | 6,261 | 5,853 | 5,977 | 5,966 |
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Land | - | 2,115 | 2,115 | 2,220 | 2,148 | 2,150 | 2,150 |
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Leased assets | - | 361 | 403 | 414 | 399 | 410 | 443 |
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Construction in progress | - | 20 | 93 | 1,278 | 179 | 140 | 348 |
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Accumulated depreciation | - | -12,045 | -12,843 | -13,188 | -13,904 | -14,964 | -15,748 |
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Property, plant and equipment | - | 5,356 | 5,274 | 6,261 | 5,853 | 5,977 | 5,966 |
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Software | - | - | - | - | - | 90 | 79 |
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Software in progress | - | - | - | - | 6 | 1 | 5 |
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Intangible assets | - | 156 | 176 | 189 | 169 | 184 | 1,126 |
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Goodwill | - | 72 | 62 | 72 | 58 | 65 | 1,025 |
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Leased assets | - | 6 | 18 | 12 | 7 | 4 | 1 |
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Intangible assets | - | 47 | 40 | 33 | 26 | 19 | 12 |
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Other | - | 30 | 56 | 72 | 71 | 95 | 4 |
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Intangible assets | - | 156 | 176 | 189 | 169 | 184 | 1,126 |
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Shares of subsidiaries and associates | - | 1 | 9 | - | - | 13 | 21 |
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Investment securities | - | 1,455 | 1,423 | 1,877 | 2,138 | 1,726 | 3,393 |
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Long-term loans receivable from subsidiaries and associates | - | - | - | - | - | 66 | 288 |
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Shares of subsidiaries and associates | - | 1 | 9 | - | - | 13 | 21 |
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Investments in capital | - | - | - | - | - | 2 | 8 |
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Long-term prepaid expenses | - | - | - | - | 135 | 255 | 216 |
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Deferred tax assets | - | 159 | 173 | 118 | 96 | 134 | 124 |
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Other | - | 54 | 53 | 62 | 217 | 122 | 200 |
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Insurance funds | - | 325 | 374 | 208 | 231 | 17 | 27 |
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Investments and other assets | - | 1,993 | 2,031 | 2,264 | 2,681 | 2,265 | 3,978 |
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Long term accounts receivable | - | 249 | 244 | 249 | 275 | 302 | - |
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Other | - | 54 | 53 | 62 | 217 | 122 | 200 |
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Allowance for doubtful accounts | - | -259 | -245 | -249 | -276 | -302 | -2 |
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Investments and other assets | - | 1,993 | 2,031 | 2,264 | 2,681 | 2,265 | 3,978 |
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Non-current assets | - | 7,505 | 7,481 | 8,715 | 8,703 | 8,427 | 11,070 |
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Assets | - | 14,283 | 12,985 | 14,798 | 15,685 | 16,168 | 20,269 |
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Short-term borrowings | - | 1,027 | 927 | 1,484 | 927 | 600 | 1,400 |
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Notes and accounts payable - trade | - | 2,827 | 2,031 | 2,069 | 2,183 | 1,853 | 2,175 |
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Short-term borrowings from subsidiaries and associates | - | - | - | - | - | 369 | 369 |
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Electronically recorded obligations - operating | - | - | - | - | 592 | 740 | 1,111 |
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Accounts payable - other | - | 313 | 366 | 397 | 212 | 518 | 737 |
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Short-term borrowings | - | 1,027 | 927 | 1,484 | 927 | 600 | 1,400 |
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Accrued expenses | - | 209 | 138 | 125 | 126 | 151 | 230 |
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Current portion of long-term borrowings | - | 609 | 546 | 569 | 578 | 800 | 741 |
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Income taxes payable | - | 21 | 61 | 198 | 47 | 228 | 132 |
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Lease liabilities | - | 52 | 57 | 53 | 50 | 47 | 43 |
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Accrued consumption taxes | - | 117 | 102 | 104 | 99 | 171 | 225 |
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Accounts payable - other | - | 313 | 366 | 397 | 212 | 518 | 737 |
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Deposits received | - | - | - | - | - | 17 | 26 |
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Accrued expenses | - | 209 | 138 | 125 | 126 | 151 | 230 |
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Provision for bonuses | - | 207 | 249 | 244 | 196 | 387 | 431 |
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Advances received | - | 20 | 311 | 339 | 71 | 58 | 183 |
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Other | - | 152 | 147 | 56 | 35 | 45 | 83 |
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Income taxes payable | - | 21 | 61 | 198 | 47 | 228 | 132 |
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Current liabilities | - | 5,560 | 4,946 | 5,842 | 4,747 | 5,807 | 7,590 |
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Accrued consumption taxes | - | 117 | 102 | 104 | 99 | 171 | 225 |
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Provision for bonuses | - | 207 | 249 | 244 | 196 | 387 | 431 |
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Provision for product warranties | - | 6 | 11 | 10 | 7 | 15 | 18 |
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Provision for loss on orders received | - | - | - | 19 | 0 | 22 | 11 |
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Notes payable - facilities | - | - | - | 175 | 216 | 172 | 69 |
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Other | - | 152 | 147 | 56 | 35 | 45 | 83 |
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Current liabilities | - | 5,560 | 4,946 | 5,842 | 4,747 | 5,807 | 7,590 |
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Long-term borrowings from subsidiaries and associates | - | - | - | - | - | 500 | 500 |
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Long-term borrowings | - | 5,283 | 4,457 | 4,814 | 5,154 | 4,639 | 4,819 |
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Asset retirement obligations | - | 19 | 19 | 19 | 16 | 55 | 55 |
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Lease liabilities | - | 219 | 225 | 193 | 150 | 114 | 100 |
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Other | - | 37 | 35 | - | - | 104 | 126 |
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Asset retirement obligations | - | 19 | 19 | 19 | 16 | 55 | 55 |
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Non-current liabilities | - | 6,518 | 5,744 | 5,938 | 6,369 | 5,882 | 6,530 |
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Retirement benefit liability | - | 167 | 178 | 197 | 232 | 267 | 275 |
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Deferred tax liabilities | - | 619 | 667 | 715 | 816 | 704 | 1,155 |
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Other | - | 37 | 35 | - | - | 104 | 126 |
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Non-current liabilities | - | 6,518 | 5,744 | 5,938 | 6,369 | 5,882 | 6,530 |
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Liabilities | - | 12,078 | 10,690 | 11,780 | 11,116 | 11,689 | 14,120 |
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Share capital | - | 582 | 582 | 594 | 1,114 | 1,114 | 1,132 |
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Legal capital surplus | - | - | - | - | - | 1,049 | 1,067 |
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Other capital surplus | - | - | - | - | - | 382 | 382 |
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Capital surplus | - | 1,468 | 1,468 | 1,480 | 2,000 | 2,001 | 2,019 |
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Capital surplus | - | 1,468 | 1,468 | 1,480 | 2,000 | 2,001 | 2,019 |
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Retained earnings brought forward | - | - | - | - | - | 96 | -45 |
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Retained earnings | - | 150 | 242 | 640 | 869 | 1,182 | 1,701 |
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Retained earnings | - | 150 | 242 | 640 | 869 | 1,182 | 1,701 |
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Treasury shares | - | -14 | -14 | -14 | -14 | -105 | -105 |
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Shareholders' equity | - | 2,186 | 2,278 | 2,700 | 3,969 | 4,192 | 4,747 |
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Share acquisition rights | - | - | - | - | - | - | 6 |
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Valuation difference on available-for-sale securities | - | -72 | -79 | 223 | 505 | 288 | 1,395 |
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Valuation and translation adjustments | - | -72 | -79 | 223 | 505 | 288 | 1,395 |
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Net assets | 1,153 | 2,205 | 2,294 | 3,018 | 4,569 | 4,479 | 6,149 |
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Share acquisition rights | - | - | - | - | - | - | 6 |
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Net assets | 1,153 | 2,205 | 2,294 | 3,018 | 4,569 | 4,479 | 6,149 |
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Liabilities and net assets | - | 14,283 | 12,985 | 14,798 | 15,685 | 16,168 | 20,269 |
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