| Mar 31,
2013 | Mar 31,
2014 | Mar 31,
2015 | Mar 31,
2016 | Mar 31,
2017 | Mar 31,
2018 | Mar 31,
2019 | Mar 31,
2020 | Mar 31,
2021 | Mar 31,
2022 | Mar 31,
2023 | Mar 31,
2024 |
|---|
| Profit (loss) before income taxes | 1,212 | 1,298 | 1,701 | 1,608 | 2,500 | 2,263 | 2,392 | 1,338 | 1,586 | 2,003 | 766 | 1,951 |
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| Depreciation | 784 | 966 | 988 | 956 | 864 | 1,023 | 1,145 | 1,302 | 1,267 | 1,334 | 1,379 | 1,419 |
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| Amortization of goodwill | - | - | - | - | - | - | - | 25 | 25 | 25 | 25 | 25 |
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| Increase (decrease) in allowance for doubtful accounts | -1 | -18 | -1 | -1 | 0 | 0 | -0 | - | - | 1 | -1 | - |
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| Increase (decrease) in provision for bonuses | -25 | -1 | 10 | 57 | 160 | 69 | -23 | -0 | 7 | -16 | -67 | 94 |
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| Increase (decrease) in provision for bonuses for directors (and other officers) | 1 | 1 | -18 | 1 | -1 | 6 | 18 | 8 | -22 | 19 | 6 | -5 |
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| Increase (decrease) in provision for retirement benefits for directors (and other officers) | 21 | 31 | -343 | -2 | 2 | -0 | -1 | 1 | -1 | 2 | 4 | -10 |
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| Decrease (increase) in retirement benefit asset | - | - | - | - | - | - | - | - | -110 | -18 | 98 | -565 |
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| Increase (decrease) in retirement benefit liability | - | 260 | -183 | 187 | -37 | -86 | -7 | 96 | -267 | - | - | 212 |
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| Interest and dividend income | -18 | -21 | -22 | -24 | -39 | -68 | -95 | -114 | -65 | -50 | -74 | -100 |
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| Interest expenses | 14 | 20 | 17 | 22 | 20 | 31 | 9 | 13 | 17 | 12 | 39 | 69 |
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| Foreign exchange losses (gains) | -204 | -37 | -335 | 261 | -1 | 148 | -102 | 83 | -59 | -333 | -226 | -343 |
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| Subsidy income | - | - | - | - | - | -50 | -109 | -23 | -228 | -121 | -12 | -3 |
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| Loss on retirement of non-current assets | 3 | 4 | 3 | 8 | 16 | 9 | 4 | 3 | 1 | 8 | 3 | 5 |
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| Loss (gain) on sale of non-current assets | - | - | - | - | - | - | - | - | 0 | -2 | -3 | -5 |
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| Loss (gain) on redemption of securities | - | - | - | - | - | - | - | - | 3 | - | 2 | - |
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| Loss (gain) on valuation of investment securities | - | - | - | - | - | - | - | - | - | - | 1 | - |
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| Decrease (increase) in trade receivables | 530 | -217 | -123 | -17 | -161 | -285 | -29 | 425 | -200 | -314 | -236 | 462 |
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| Decrease (increase) in inventories | 39 | -16 | -62 | -133 | 110 | -119 | -14 | -83 | 49 | -369 | -235 | -139 |
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| Increase (decrease) in trade payables | -391 | -173 | -43 | 6 | 437 | 932 | -30 | -945 | 347 | 337 | 224 | 441 |
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| Increase (decrease) in accounts payable - other | -55 | -32 | 7 | -33 | -199 | -24 | -193 | 27 | 220 | -297 | -57 | -37 |
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| Increase/decrease in consumption taxes payable/consumption taxes refund receivable | -19 | -4 | 196 | -147 | 50 | -88 | 159 | -95 | 92 | -80 | -92 | 132 |
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| Other, net | -7 | -114 | 145 | -99 | 51 | 116 | 13 | 76 | 215 | 36 | 396 | 383 |
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| Subtotal | 1,854 | 1,564 | 2,123 | 2,647 | 3,680 | 3,875 | 3,144 | 2,193 | 2,878 | 2,132 | 1,941 | 3,984 |
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| Interest and dividends received | 18 | 17 | 28 | 24 | 37 | 68 | 95 | 114 | 68 | 51 | 74 | 100 |
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| Interest paid | -14 | -22 | -22 | -35 | -20 | -31 | -9 | -7 | -19 | -9 | -39 | -69 |
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| Subsidies received | - | - | - | - | - | 50 | 109 | 23 | 228 | 121 | 12 | 3 |
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| Income taxes refund (paid) | -616 | -311 | -647 | -378 | -534 | -750 | -536 | -718 | -374 | -557 | -926 | -140 |
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| Net cash provided by (used in) operating activities | 1,242 | 1,248 | 1,283 | 2,257 | 3,163 | 3,212 | 2,802 | 1,606 | 2,780 | 1,737 | 1,062 | 3,877 |
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| Payments into time deposits | -138 | -184 | -37 | -81 | -942 | -163 | -393 | -414 | -425 | -27 | -90 | -367 |
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| Purchase of securities | - | - | - | - | - | -653 | -424 | -342 | -2 | -327 | -136 | -142 |
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| Proceeds from redemption of securities | - | - | - | - | 135 | 327 | 1,363 | 1,797 | 524 | 335 | 333 | 818 |
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| Purchase of property, plant and equipment | -1,620 | -1,527 | -984 | -494 | -1,868 | -1,344 | -1,086 | -1,431 | -2,061 | -1,806 | -1,620 | -2,451 |
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| Proceeds from sale of property, plant and equipment | 5 | 3 | 2 | 6 | 441 | 1 | 91 | 6 | 21 | 80 | 18 | 12 |
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| Purchase of intangible assets | -30 | -42 | -9 | -22 | -10 | -11 | -37 | -70 | -140 | -23 | -40 | -32 |
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| Purchase of investment securities | -20 | -11 | -127 | -417 | -741 | -989 | -1,318 | -228 | -12 | -125 | -391 | -16 |
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| Proceeds from redemption of investment securities | 50 | - | - | - | - | - | - | - | - | - | 500 | - |
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| Proceeds from collection of loans receivable | - | - | - | - | - | - | - | - | 2 | 0 | 0 | - |
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| Purchase of insurance funds | - | - | - | -25 | -324 | -26 | -158 | -48 | -48 | -47 | -45 | -25 |
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| Proceeds from maturity of insurance funds | - | - | - | - | - | - | - | - | 9 | 73 | 16 | 43 |
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| Other payments | -33 | -137 | -45 | -11 | -22 | -20 | -8 | -20 | -74 | -11 | -25 | -11 |
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| Other proceeds | 40 | 16 | 97 | 15 | 20 | 10 | 12 | 50 | 11 | 4 | 1 | 1 |
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| Net cash provided by (used in) investing activities | -1,629 | -1,645 | -1,080 | -986 | -3,100 | -2,149 | -1,555 | -863 | -1,745 | -1,337 | -1,479 | -2,172 |
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| Net increase (decrease) in short-term borrowings | - | - | - | - | - | - | - | - | 1,815 | -1,490 | 150 | 392 |
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| Proceeds from long-term borrowings | 600 | 486 | - | 500 | 400 | - | - | - | 160 | 471 | 420 | 678 |
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| Repayments of long-term borrowings | -887 | -107 | -157 | -516 | -707 | -388 | -287 | -403 | -237 | -187 | -80 | -339 |
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| Redemption of bonds | - | - | - | - | - | - | - | - | - | -10 | -10 | - |
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| Dividends paid | -123 | -123 | -124 | -155 | -186 | -204 | -357 | -281 | -265 | -266 | -266 | -266 |
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| Purchase of treasury shares | - | - | - | -0 | -0 | - | -0 | -213 | -0 | - | -0 | -0 |
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| Repayments of lease liabilities | -33 | -19 | -16 | -16 | -16 | -4 | -1 | -69 | -74 | -63 | -55 | -71 |
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| Net cash provided by (used in) financing activities | -443 | 236 | -297 | -187 | -508 | -596 | -645 | -976 | 1,289 | -1,545 | 159 | 394 |
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| Effect of exchange rate change on cash and cash equivalents | 44 | 55 | 125 | -110 | -33 | -71 | -84 | -26 | -27 | 345 | 360 | 393 |
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| Net increase (decrease) in cash and cash equivalents | -786 | -106 | 31 | 973 | -478 | 397 | 518 | -259 | 2,297 | -800 | 102 | 2,493 |
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