| 法人税、住民税及び事業税 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 法人税、住民税及び事業税 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 法人税等 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/gas/role/label | http://www.xbrl.org/2003/role/link |
| 法人税・住民税及び事業税 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/med/role/label | http://www.xbrl.org/2003/role/link |
| 法人税等 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/ele/role/label | http://www.xbrl.org/2003/role/link |
| 法人税等 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/edu/role/label | http://www.xbrl.org/2003/role/link |
| Income taxes - current | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Income taxes-current | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Income taxes - current | en | http://disclosure.edinet-fsa.go.jp/jppfs/gas/role/label | http://www.xbrl.org/2003/role/link |
| Income taxes - current | en | http://disclosure.edinet-fsa.go.jp/jppfs/med/role/label | http://www.xbrl.org/2003/role/link |
| Income taxes - current | en | http://disclosure.edinet-fsa.go.jp/jppfs/ele/role/label | http://www.xbrl.org/2003/role/link |
| Income taxes - current | en | http://disclosure.edinet-fsa.go.jp/jppfs/edu/role/label | http://www.xbrl.org/2003/role/link |