| 売出コマーシャル・ペーパー及び売出短期社債 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 売出コマーシャル・ペーパー及び売出短期社債 [目次項目] | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Secondary distribution of commercial papers and short-term corporate bonds | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Secondary distribution of commercial papers and short-term corporate bonds [heading] | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |