| 貸倒引当金 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 貸倒引当金、投資その他の資産、一括控除 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 貸倒引当金(貸方) | ja | http://disclosure.edinet-fsa.go.jp/jppfs/elc/role/label | http://www.xbrl.org/2003/role/link |
| 貸倒引当金(貸方) | ja | http://disclosure.edinet-fsa.go.jp/jppfs/ele/role/label | http://www.xbrl.org/2003/role/link |
| Allowance for doubtful accounts | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Allowance for doubtful accounts-IOA-by group | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Allowance for doubtful accounts | en | http://disclosure.edinet-fsa.go.jp/jppfs/elc/role/label | http://www.xbrl.org/2003/role/link |
| Allowance for doubtful accounts | en | http://disclosure.edinet-fsa.go.jp/jppfs/ele/role/label | http://www.xbrl.org/2003/role/link |