| 旅費及び通信費 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 旅費及び通信費、販売費及び一般管理費 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 旅費通信費 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/cna/role/label | http://www.xbrl.org/2003/role/link |
| Travel and communication expenses | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Travel and communication expenses - SGA | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Travel and communication expenses | en | http://disclosure.edinet-fsa.go.jp/jppfs/cna/role/label | http://www.xbrl.org/2003/role/link |