| 内国投資証券(新投資口予約権証券及び投資法人債券を除く。) | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 内国投資証券(新投資口予約権証券及び投資法人債券を除く。) [目次項目] | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Domestic investment securities other than investment unit acquisition rights and bonds of investment corporation | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Domestic investment securities other than investment unit acquisition rights and bonds of investment corporation [heading] | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |