| Decrease in surplus or increase in deficit from partial exchange | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Decrease in surplus or increase in deficit from partial exchange-FND | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Decrease in surplus or increase in deficit from partial exchange | en | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedInterim/role/label | http://www.xbrl.org/2003/role/link |
| 当期一部交換に伴う剰余金減少額又は欠損金増加額 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 当期一部交換に伴う剰余金減少額又は欠損金増加額、投資信託 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 中間一部交換に伴う剰余金減少額又は欠損金増加額 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedInterim/role/label | http://www.xbrl.org/2003/role/link |