| 減価償却費 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 減価償却費、営業活動によるキャッシュ・フロー | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 減価償却額 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/edu/role/label | http://www.xbrl.org/2003/role/link |
| Depreciation | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Depreciation-OpeCF | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Depreciation | en | http://disclosure.edinet-fsa.go.jp/jppfs/edu/role/label | http://www.xbrl.org/2003/role/link |