| 持分法による投資損失 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 持分法による投資損失、営業外費用 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| (うち持分法による投資損失) | ja | http://disclosure.edinet-fsa.go.jp/jppfs/ins/role/label | http://www.xbrl.org/2003/role/link |
| Share of loss of entities accounted for using equity method | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Share of loss of entities accounted for using equity method-NOE | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Equity in losses of affiliates | en | http://disclosure.edinet-fsa.go.jp/jppfs/ins/role/label | http://www.xbrl.org/2003/role/link |