| 引当金 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 引当金、固定負債 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 引当金計 | ja | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Provisions | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Provisions - NCL | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Total provisions | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |