| 固定資産除却損 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 固定資産除却損、特別損失 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 固定資産除却費 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/hwy/role/label | http://www.xbrl.org/2003/role/link |
| Loss on retirement of non-current assets | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Loss on retirement of non-current assets-EL | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Loss on retirement of non-current assets | en | http://disclosure.edinet-fsa.go.jp/jppfs/hwy/role/label | http://www.xbrl.org/2003/role/link |