| 社債発行費償却 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 社債発行費償却、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 |
| 社債発行費等償却 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/elc/role/label | http://www.xbrl.org/2003/role/link |
| Amortization of bond issuance costs | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Amortization of bond issuance costs - OpeCF | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Amortization of bond issuance costs | en | http://disclosure.edinet-fsa.go.jp/jppfs/elc/role/label | http://www.xbrl.org/2003/role/link |