| （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 | - | 0 | - | - | 0 | - | - | - | 0 | - | - | - | 0 | - | - | - | 0 | - | - | - | 0 | - | - | - | 0 | - | - | - | 0 | - | - | - | 0 | - | - | - | 0 | - | - | - | 0 | - | - |
| 有価証券 | - | 6 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 流動資産合計 | - | 7 | 6 | - | 1 | - | 0 | - | 0 | - | 1 | - | 1 | - | 3 | - | 0 | - | 1 | - | 0 | - | 0 | - | 0 | - | 1 | - | 0 | - | 0 | - | 1 | - | 1 | - | 0 | - | - | - | 0 | - | - |
| 有形固定資産 | - | 24 | 25 | 25 | 26 | 26 | 26 | 29 | 29 | 30 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 19 | 19 |
| 固定資産合計 | - | 65 | 65 | - | 71 | - | 72 | - | 72 | - | 72 | - | 72 | - | 72 | - | 74 | - | 74 | - | 72 | - | 72 | - | 72 | - | 67 | - | 67 | - | 67 | - | 63 | - | 63 | - | 63 | - | - | - | 63 | - | - |
| 総資産 | - | 2,831 | 2,881 | 2,986 | 2,874 | 2,970 | 2,931 | 2,952 | 2,847 | 2,933 | 2,852 | 2,858 | 2,762 | 2,797 | 2,771 | 2,789 | 2,731 | 2,768 | 2,718 | 2,759 | 2,715 | 2,961 | 2,995 | 3,257 | 3,221 | 3,344 | 3,282 | 3,307 | 3,265 | 3,112 | 3,033 | 3,045 | 3,020 | 3,099 | 3,051 | 3,091 | 3,061 | 3,117 | 3,060 | 3,070 | 2,922 | 2,976 | 2,923 |
| 短期借入金 | - | 11 | - | - | 2 | - | - | - | 0 | - | - | - | 0 | - | - | - | 0 | - | - | - | - | - | - | - | 11 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 流動負債合計 | - | 16 | 11 | - | 2 | - | 1 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | 11 | - | 11 | - | 0 | - | 0 | - | 0 | - | 0 | - | 0 | - | - | - | 0 | - | - |
| 長期借入金 | - | 2 | - | - | 11 | - | - | - | 13 | - | - | - | 13 | - | - | - | 13 | - | - | - | 11 | - | - | - | - | - | - | - | 11 | - | - | - | 11 | - | - | - | 11 | - | - | - | 11 | - | - |
| 固定負債合計 | - | 2 | 1 | - | 11 | - | 11 | - | 13 | - | 13 | - | 13 | - | 13 | - | 13 | - | 13 | - | 11 | - | 11 | - | 0 | - | 0 | - | 11 | - | 11 | - | 11 | - | 11 | - | 11 | - | - | - | 11 | - | - |
| 総負債 | - | 2,722 | 2,771 | 2,871 | 2,754 | 2,848 | 2,810 | 2,838 | 2,735 | 2,818 | 2,736 | 2,738 | 2,646 | 2,680 | 2,653 | 2,675 | 2,612 | 2,646 | 2,591 | 2,634 | 2,603 | 2,844 | 2,876 | 3,136 | 3,101 | 3,219 | 3,164 | 3,187 | 3,156 | 3,007 | 2,930 | 2,947 | 2,929 | 3,007 | 2,969 | 3,006 | 2,975 | 3,035 | 2,980 | 2,990 | 2,845 | 2,894 | 2,838 |
| 資本金及び資本剰余金 | - | 41 | 46 | 46 | 46 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 42 | 42 | 42 | 42 | 42 | 42 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| 利益剰余金 | - | 35 | 40 | 42 | 43 | 44 | 45 | 45 | 46 | 47 | 48 | 49 | 49 | 49 | 50 | 51 | 51 | 52 | 53 | 53 | 51 | 51 | 52 | 53 | 54 | 54 | 55 | 57 | 56 | 57 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 59 | 59 | 60 | 60 |
| 株主資本 | 84 | 109 | 111 | 115 | 120 | 122 | 120 | 114 | 112 | 114 | 116 | 121 | 116 | 117 | 118 | 114 | 120 | 122 | 126 | 126 | 112 | 116 | 119 | 121 | 120 | 125 | 118 | 120 | 109 | 105 | 102 | 98 | 91 | 92 | 82 | 85 | 86 | 82 | 80 | 81 | 77 | 82 | 85 |