| 関係会社整理損失引当金の増減額(△は減少) | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 関係会社整理損失引当金の増減額(△は減少)、営業活動によるキャッシュ・フロー | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Increase (decrease) in provision for loss on liquidation of subsidiaries and associates | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Increase (decrease) in provision for loss on liquidation of subsidiaries and associates-OpeCF | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |