| 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 |
|---|
| Profit (loss) before income taxes | 529 | 842 | 694 | 649 | 1,044 | 765 | 738 | 731 | 882 | 793 |
|---|
| Depreciation | 1,271 | 800 | 814 | 820 | 3,893 | 3,025 | 2,276 | 2,070 | 2,277 | 3,158 |
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| Amortization of goodwill | - | - | - | - | - | 42 | 42 | 42 | 42 | 42 |
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| Contribution received for construction | - | - | - | - | - | - | -150 | -55 | -1 | -16 |
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| Loss on reduction of expropriation etc. | - | - | - | - | - | - | 152 | 55 | 4 | 42 |
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| Increase (decrease) in allowance for doubtful accounts | 1 | -2 | -2 | -1 | 6 | -1 | 39 | -34 | 3 | 15 |
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| Increase (decrease) in provision for retirement benefits for directors (and other officers) | 3 | -2 | 25 | -59 | -114 | 6 | 17 | 17 | -19 | -90 |
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| Increase (decrease) in retirement benefit liability | 605 | -96 | -97 | -69 | -139 | 20 | -58 | -10 | -24 | 8 |
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| Decrease (increase) in retirement benefit asset | - | - | - | - | - | -47 | -92 | 63 | 1 | 14 |
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| Increase (decrease) in provision for bonuses | 15 | -19 | 10 | -14 | 134 | -91 | -28 | -54 | 71 | 2 |
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| Interest and dividend income | -15 | -15 | -16 | -10 | -10 | -20 | -27 | -26 | -26 | -21 |
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| Interest expenses | 44 | 40 | 38 | 34 | 49 | 62 | 57 | 93 | 98 | 93 |
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| Loss (gain) on investments in silent partnerships | - | 297 | 154 | 101 | 56 | 21 | -3 | -6 | -11 | -47 |
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| Decrease(increase)in trade receivables and Contract Assets | - | - | - | - | - | - | - | - | -593 | -641 |
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| Decrease (increase) in inventories | -35 | 15 | 55 | 8 | -9 | -19 | 49 | 2 | -267 | -176 |
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| Decrease (increase) in accounts receivable - other | - | - | - | - | - | - | - | - | -627 | 563 |
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| Increase (decrease) in trade payables | 149 | 82 | -149 | -81 | 14 | 115 | -193 | 101 | 839 | 1,455 |
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| Decrease (increase) in investments in leases | - | - | - | - | 24 | 24 | 24 | 24 | 24 | 12 |
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| Increase (decrease) in accrued expenses | -104 | -223 | -13 | 27 | 148 | -25 | -58 | 116 | -104 | 22 |
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| Increase (decrease) in provision for gas holder repairs | -16 | 4 | -42 | 9 | 9 | 9 | -21 | 10 | 10 | 10 |
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| Increase (decrease) in accrued consumption taxes | -6 | 116 | -77 | -46 | 16 | 3 | -34 | 19 | 10 | -29 |
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| Other, net | - | 35 | 44 | 1 | 88 | 58 | -29 | -164 | 82 | -107 |
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| Subtotal | 1,778 | 1,984 | 1,784 | 1,576 | 3,163 | 3,733 | 3,065 | 3,243 | 3,170 | 5,546 |
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| Interest and dividends received | 15 | 15 | 16 | 10 | 10 | 20 | 27 | 26 | 31 | 21 |
|---|
| Interest paid | -44 | -40 | -38 | -34 | -49 | -62 | -85 | -104 | -98 | -90 |
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| Income taxes refund | - | - | - | - | - | - | 204 | 238 | 82 | 82 |
|---|
| Income taxes paid | -101 | -199 | -344 | -211 | -292 | -832 | -355 | -344 | -626 | -532 |
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| Net cash provided by (used in) operating activities | 1,647 | 1,760 | 1,418 | 1,342 | 2,833 | 2,860 | 2,856 | 3,059 | 2,559 | 5,026 |
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| Payments into time deposits | -164 | -188 | -237 | -287 | -425 | -282 | -401 | -378 | -267 | -294 |
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| Proceeds from withdrawal of time deposits | 162 | 164 | 188 | 237 | 287 | -98 | 304 | 275 | 292 | 216 |
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| Proceeds from sale and redemption of investment securities | - | - | - | 395 | - | - | 197 | 156 | 390 | - |
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| Purchase of investment securities | -300 | -100 | -13 | -237 | -253 | -220 | 197 | -193 | -699 | -1 |
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| Purchase of property, plant and equipment | -1,526 | -1,099 | -917 | -1,094 | -2,182 | -2,889 | -5,323 | -4,040 | -3,553 | -2,235 |
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| Proceeds from contribution received for construction | - | - | - | - | - | - | 150 | 55 | 1 | 16 |
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| Purchase of intangible assets | - | -4 | -137 | -97 | -4 | -4 | -10 | -28 | -9 | -9 |
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| Proceeds from sale of property, plant and equipment | - | - | - | - | 118 | 2 | 22 | - | - | 55 |
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| Decrease(increase) other amount of investments | -161 | -214 | -53 | -56 | 154 | -110 | 50 | -38 | 26 | 44 |
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| Proceeds from collection of loans receivable | - | - | - | - | 4 | 4 | 5 | 4 | 2 | 2 |
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| Net cash provided by (used in) investing activities | -1,787 | -1,739 | -1,160 | -1,123 | -7,861 | -3,597 | -5,384 | -4,196 | -3,816 | -2,206 |
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| Repayments of short-term borrowings | -150 | -130 | -100 | -490 | -390 | - | -200 | -90 | -198 | -540 |
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| Proceeds from short-term borrowings | - | - | 490 | 390 | 530 | 150 | - | - | 678 | 250 |
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| Proceeds from long-term borrowings | 616 | 727 | 519 | 616 | 8,810 | 1,514 | 3,660 | 4,589 | 580 | 311 |
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| Repayments of long-term borrowings | -612 | -560 | -541 | -535 | -530 | -1,340 | -937 | -955 | -1,305 | -1,645 |
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| Dividends paid | -22 | -25 | -29 | -32 | -32 | -36 | -36 | -36 | -36 | -36 |
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| Dividends paid to non-controlling interests | - | -0 | -0 | -0 | -0 | -0 | -0 | -0 | -0 | -0 |
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| Repayments of installment payables | - | - | - | - | - | - | - | - | -2 | -2 |
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| Repayments of lease liabilities | -50 | -87 | -52 | -66 | -40 | -88 | -89 | -86 | -63 | -83 |
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| Net cash provided by (used in) financing activities | -219 | -75 | 16 | -118 | 8,347 | 130 | 2,397 | 3,422 | -346 | -1,745 |
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| Net increase (decrease) in cash and cash equivalents | -359 | -54 | 274 | 101 | 3,319 | -607 | -131 | 2,285 | -1,603 | 1,074 |
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