| 営業総収入 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 営業総収入 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 営業総収入合計 | ja | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Gross operating revenue | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Gross operating revenue | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Total gross operating revenue | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |