| 連結財務諸表作成のための基本となる重要な事項 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 連結財務諸表作成のための基本となる重要な事項 [表示項目] | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Notes - Significant accounting policies for preparation of consolidated financial statements | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Notes - Significant accounting policies for preparation of consolidated financial statements [line items] | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |