| 金融商品取引責任準備金の増減額(△は減少) | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 金融商品取引責任準備金の増減額(△は減少)、営業活動によるキャッシュ・フロー、第一種金融商品取引業 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Increase (decrease) in reserve for financial instruments transaction liabilities | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Increase (decrease) in reserve for financial instruments transaction liabilities - OpeCF - SEC | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |