| Mar 31, 2017 | Mar 31, 2018 | Mar 31, 2019 | Mar 31, 2020 |
|---|
| Profit (loss) before income taxes | 291 | 303 | 464 | 406 |
|---|
| Depreciation | 57 | 70 | 89 | 109 |
|---|
| Share-based remuneration expenses | - | - | 34 | 18 |
|---|
| Miscellaneous loss | - | - | 1 | - |
|---|
| Increase (decrease) in outstanding claims | 161 | 162 | 168 | 326 |
|---|
| Increase (decrease) in policy reserve | 799 | 796 | 1,289 | 1,522 |
|---|
| Increase (decrease) in allowance for doubtful accounts | - | -3 | - | -1 |
|---|
| Increase (decrease) in provision for bonuses | 30 | -74 | 26 | 18 |
|---|
| Increase (decrease) in provision for bonuses for directors (and other officers) | 6 | -16 | 30 | -30 |
|---|
| Increase (decrease) in provision for shareholder benefit program | - | - | 4 | 4 |
|---|
| Increase (decrease) in reserve for price fluctuation | - | 2 | 3 | 6 |
|---|
| Interest and dividend income | -3 | -30 | -60 | -125 |
|---|
| Loss (gain) on money held in trust | - | - | - | -6 |
|---|
| Loss (gain) related to securities | - | -19 | 13 | 5 |
|---|
| Interest expenses | - | - | - | - |
|---|
| Foreign exchange losses (gains) | - | - | 2 | 1 |
|---|
| Settlement received | - | - | -170 | - |
|---|
| Loss (gain) related to property, plant and equipment | 5 | 259 | - | 47 |
|---|
| Decrease (increase) in other investing and financing activities assets | -219 | -229 | -526 | -374 |
|---|
| Increase (decrease) in other investing and financing activities liabilities | -121 | 221 | -11 | 23 |
|---|
| Subtotal | 1,007 | 1,443 | 1,361 | 1,956 |
|---|
| Interest and dividends received | 2 | 21 | 53 | 123 |
|---|
| Interest paid | - | - | - | - |
|---|
| Settlement package received | - | - | 170 | - |
|---|
| Income taxes paid | -17 | -161 | -55 | -534 |
|---|
| Net cash provided by (used in) operating activities | 1,014 | 1,304 | 1,529 | 1,544 |
|---|
| Net decrease (increase) in cash and deposits | 441 | -100 | 594 | 1,104 |
|---|
| Increase in money held in trust | - | - | - | -1,007 |
|---|
| Purchase of securities | -664 | -1,624 | -1,387 | -2,382 |
|---|
| Proceeds from sales and redemption of securities | 13 | 150 | 4 | 741 |
|---|
| Loan advances | -8 | -26 | -112 | -20 |
|---|
| Collection of loans receivable | - | 9 | 17 | 18 |
|---|
| Total of net cash provided by (used in) investment transactions | -218 | -1,591 | -883 | -1,546 |
|---|
| Total of net cash provided by (used in) operating activities and investment transactions | 796 | -287 | 645 | -1 |
|---|
| Purchase of property, plant and equipment | -74 | -58 | -144 | -222 |
|---|
| Purchase of intangible assets | -354 | -194 | -922 | -839 |
|---|
| Payments for lease deposits | -71 | -3 | -98 | -5 |
|---|
| Collection of lease deposits | 1 | - | 1 | 34 |
|---|
| Net cash provided by (used in) investing activities | -717 | -1,846 | -2,048 | -2,580 |
|---|
| Proceeds from issuance of stocks | - | - | 1,449 | - |
|---|
| Proceeds from issuance of shares resulting from exercise of share acquisition rights | - | 1 | 44 | 40 |
|---|
| Repayments of lease obligations | -1 | -5 | -8 | -8 |
|---|
| Proceeds from borrowings | - | - | - | 125 |
|---|
| Net cash provided by (used in) financing activities | -1 | -4 | 1,484 | 156 |
|---|
| Effect of exchange rate change on cash and cash equivalents | - | - | - | -1 |
|---|
| Net increase (decrease) in cash and cash equivalents | 294 | -547 | 964 | -880 |
|---|