| （単位：十億円） | 4Q14 | 4Q15 | 2Q16 | 3Q16 | 4Q16 | 1Q17 | 2Q17 | 3Q17 | 4Q17 | 1Q18 | 2Q18 | 3Q18 | 4Q18 | 1Q19 | 2Q19 | 3Q19 | 4Q19 | 1Q20 | 2Q20 | 3Q20 | 4Q20 | 1Q21 | 2Q21 | 3Q21 | 4Q21 | 1Q22 | 2Q22 | 3Q22 | 4Q22 | 1Q23 | 2Q23 | 3Q23 | 4Q23 | 1Q24 | 2Q24 | 3Q24 | 4Q24 | 1Q25 | 2Q25 | 3Q25 | 4Q25 | 1Q26 | 2Q26 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 現金同等物 | - | 1 | - | - | 1 | - | - | - | 1 | - | - | - | 1 | - | - | - | 1 | - | - | - | 1 | - | - | - | 1 | - | - | - | 2 | - | - | - | 1 | - | - | - | 1 | - | - | - | 6 | - | - |
| 流動資産合計 | - | 1 | 1 | - | 2 | - | 2 | - | 2 | - | 2 | - | 2 | - | 2 | - | 2 | - | 2 | - | 2 | - | 2 | - | 2 | - | 1 | - | 2 | - | 2 | - | 2 | - | 3 | - | 2 | - | - | - | 6 | - | - |
| 有形固定資産 | - | 54 | 53 | 53 | 53 | 55 | 56 | 56 | 56 | 58 | 59 | 58 | 60 | 62 | 61 | 61 | 60 | 62 | 62 | 63 | 58 | 58 | 57 | 57 | 56 | 56 | 56 | 56 | 56 | 55 | 57 | 57 | 56 | 57 | 57 | 57 | 60 | 60 | 59 | 59 | 58 | 57 | 58 |
| 投資有価証券 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | - | - | - | 0 | - | - | - | 0 | - | - |
| 固定資産合計 | - | 140 | 140 | - | 140 | - | 194 | - | 194 | - | 194 | - | 194 | - | 194 | - | 194 | - | 194 | - | 197 | - | 197 | - | 198 | - | 198 | - | 207 | - | 216 | - | 216 | - | 219 | - | 220 | - | - | - | 225 | - | - |
| 総資産 | - | 4,944 | 5,121 | 5,203 | 5,113 | 5,569 | 5,581 | 5,709 | 5,577 | 5,565 | 5,541 | 5,529 | 5,483 | 5,520 | 5,646 | 5,408 | 5,373 | 5,399 | 5,406 | 5,664 | 5,501 | 5,618 | 5,703 | 5,878 | 5,922 | 6,027 | 6,387 | 6,538 | 6,444 | 6,373 | 6,536 | 6,589 | 6,742 | 6,587 | 6,619 | 6,609 | 7,194 | 6,769 | 6,789 | 6,733 | 7,095 | 7,258 | 7,396 |
| 短期借入金 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 10 | - | - | - | 18 | - | - | - | 5 | - | - | - | 5 | - | - |
| 一年内返済予定の長期借入金 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0 | - | - |
| 流動負債合計 | - | 0 | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 10 | - | 19 | - | 19 | - | 22 | - | 6 | - | - | - | 6 | - | - |
| 長期借入金 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 16 | - | - | - | 21 | - | - |
| 固定負債合計 | - | 5 | 5 | - | 5 | - | 5,299 | - | 5,294 | - | 5,251 | - | 5,192 | - | 5,350 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 16 | - | - | - | 21 | - | - |
| 総負債 | - | 4,741 | 4,916 | 4,995 | 4,909 | 5,287 | 5,299 | 5,428 | 5,294 | 5,279 | 5,251 | 5,238 | 5,192 | 5,226 | 5,350 | 5,114 | 5,080 | 5,104 | 5,108 | 5,367 | 5,207 | 5,321 | 5,404 | 5,575 | 5,611 | 5,710 | 6,066 | 6,216 | 6,124 | 6,061 | 6,225 | 6,278 | 6,415 | 6,251 | 6,284 | 6,267 | 6,828 | 6,410 | 6,422 | 6,367 | 6,723 | 6,879 | 6,998 |
| 資本金及び資本剰余金 | - | 120 | 120 | 120 | 120 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 178 | 179 | 179 | 179 | 179 | 179 |
| 利益剰余金 | - | 73 | 77 | 79 | 81 | 102 | 104 | 104 | 105 | 106 | 108 | 108 | 106 | 107 | 109 | 108 | 109 | 109 | 111 | 111 | 115 | 114 | 116 | 116 | 118 | 119 | 121 | 124 | 133 | 135 | 141 | 144 | 151 | 155 | 163 | 166 | 173 | 177 | 183 | 189 | 199 | 202 | 216 |
| 株主資本 | 81 | 203 | 205 | 207 | 203 | 282 | 282 | 281 | 283 | 286 | 290 | 291 | 291 | 294 | 296 | 293 | 293 | 294 | 298 | 298 | 294 | 297 | 300 | 302 | 311 | 317 | 321 | 322 | 319 | 312 | 311 | 311 | 327 | 335 | 335 | 342 | 365 | 359 | 367 | 367 | 371 | 379 | 398 |