| 貸倒引当金繰入額 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 貸倒引当金繰入額、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 |
| 貸倒引当金繰入 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/ivt/role/label | http://www.xbrl.org/2003/role/link |
| 貸倒引当金繰入れ | ja | http://disclosure.edinet-fsa.go.jp/jppfs/sec/role/label | http://www.xbrl.org/2003/role/link |
| Provision of allowance for doubtful accounts | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Provision of allowance for doubtful accounts-SGA | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Provision of allowance for doubtful accounts | en | http://disclosure.edinet-fsa.go.jp/jppfs/ivt/role/label | http://www.xbrl.org/2003/role/link |
| Provision of allowance for doubtful accounts | en | http://disclosure.edinet-fsa.go.jp/jppfs/sec/role/label | http://www.xbrl.org/2003/role/link |