| 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 | 2,211 | 1,460 | 2,013 | 1,735 | 1,890 | 1,079 | 1,416 |
|---|
| Depreciation | 275 | 303 | 326 | 333 | 352 | 315 | 309 |
|---|
| Impairment losses | - | 8 | - | 485 | 14 | 66 | 45 |
|---|
| Increase (decrease) in provision for warranties for completed construction | 29 | -16 | 0 | 1 | -8 | -11 | -3 |
|---|
| Increase (decrease) in provision for loss on construction contracts | -11 | 8 | -4 | 6 | -2 | -3 | -0 |
|---|
| Increase (decrease) in allowance for doubtful accounts | -2 | -35 | -4 | -1 | 45 | 2 | - |
|---|
| Increase (decrease) in provision for bonuses | 11 | -20 | 52 | -1 | 4 | -92 | 146 |
|---|
| Increase (decrease) in provision for retirement benefits for directors (and other officers) | -10 | -4 | 14 | -6 | 15 | 14 | -4 |
|---|
| Increase (decrease) in provision for compensation for health damage | -30 | 47 | -3 | 30 | -19 | 40 | -29 |
|---|
| Interest and dividend income | -8 | -10 | -11 | -10 | -11 | -14 | -18 |
|---|
| Interest expenses | 30 | 21 | 15 | 9 | 6 | 6 | 5 |
|---|
| Foreign exchange losses (gains) | 5 | 1 | 5 | 4 | -3 | -21 | -15 |
|---|
| Loss (gain) on sale of investment securities | - | - | - | - | -12 | -3 | - |
|---|
| Loss on retirement of property, plant and equipment | - | - | 4 | 17 | 5 | 4 | 3 |
|---|
| Decrease (increase) in accounts receivable - trade, and contract assets | - | - | - | - | - | 1,480 | -189 |
|---|
| Decrease (increase) in inventories | -159 | 49 | -105 | 45 | -28 | -214 | -116 |
|---|
| Increase (decrease) in trade payables | -22 | 194 | 176 | -101 | -54 | -26 | 201 |
|---|
| Increase (decrease) in contract liabilities | - | - | - | - | 174 | 42 | 74 |
|---|
| Other, net | 2 | 61 | 80 | -163 | -12 | -187 | 263 |
|---|
| Subtotal | 1,673 | 2,231 | 1,463 | 2,207 | 2,262 | 2,477 | 2,089 |
|---|
| Interest and dividends received | 8 | 10 | 11 | 10 | 13 | 14 | 18 |
|---|
| Interest paid | -31 | -21 | -15 | -9 | -7 | -6 | -6 |
|---|
| Income taxes paid | -608 | -623 | -505 | -745 | -744 | -552 | -185 |
|---|
| Net cash provided by (used in) operating activities | 1,334 | 1,615 | 964 | 1,461 | 1,524 | 1,933 | 1,916 |
|---|
| Payments into time deposits | -70 | -50 | -130 | -30 | -30 | -30 | -211 |
|---|
| Proceeds from withdrawal of time deposits | 79 | 102 | 135 | 12 | 12 | 12 | 12 |
|---|
| Purchase of property, plant and equipment | -639 | -306 | -619 | -335 | -389 | -459 | -216 |
|---|
| Purchase of intangible assets | -21 | -47 | -11 | -59 | -1 | -12 | -2 |
|---|
| Purchase of investment securities | -10 | -117 | -10 | -10 | -34 | -78 | -12 |
|---|
| Proceeds from rental of investment property | 13 | 14 | 21 | 21 | 21 | 21 | 20 |
|---|
| Payments for lease of real estate for investment | -2 | -3 | -3 | -3 | -3 | -4 | -2 |
|---|
| Proceeds from sale and redemption of investment securities | - | - | - | - | 114 | 11 | - |
|---|
| Other, net | - | -0 | 3 | 1 | 2 | 2 | -35 |
|---|
| Net cash provided by (used in) investing activities | -668 | -395 | -614 | -403 | -308 | -537 | -447 |
|---|
| Proceeds from long-term borrowings | 70 | 70 | 170 | 350 | 450 | 350 | 550 |
|---|
| Repayments of long-term borrowings | -1,036 | -1,024 | -931 | -768 | -458 | -414 | -505 |
|---|
| Purchase of treasury shares | - | - | - | - | - | -72 | - |
|---|
| Dividends paid | -191 | -229 | -244 | -304 | -304 | -322 | -320 |
|---|
| Net cash provided by (used in) financing activities | -1,157 | -1,183 | -42 | -722 | -312 | -458 | -275 |
|---|
| Effect of exchange rate change on cash and cash equivalents | -5 | -1 | -5 | -4 | 16 | 11 | 1 |
|---|
| Net increase (decrease) in cash and cash equivalents | -497 | 37 | 302 | 332 | 920 | 949 | 1,195 |
|---|