| 非上場株式以外の株式 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 非上場株式以外の株式、保有目的が純投資目的である投資株式、投資株式計上額が次に大きい会社 [タイトル項目] | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Equity securities other than those not listed | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Equity securities other than those not listed, Investment equity securities held for pure investment, Second largest holding company [abstract] | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
Index