| 1年内償還予定の社債 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 1年内償還予定の社債 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 1年以内償還社債 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/rwy/role/label | http://www.xbrl.org/2003/role/link |
| 1年以内償還予定の社債 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/spf/role/label | http://www.xbrl.org/2003/role/link |
| 1年以内償還予定社債 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/hwy/role/label | http://www.xbrl.org/2003/role/link |
| Current portion of bonds payable | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Current portion of bonds payable | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Current portion of bonds payable | en | http://disclosure.edinet-fsa.go.jp/jppfs/rwy/role/label | http://www.xbrl.org/2003/role/link |
| Current portion of bonds payable | en | http://disclosure.edinet-fsa.go.jp/jppfs/spf/role/label | http://www.xbrl.org/2003/role/link |
| Current portion of bonds payable | en | http://disclosure.edinet-fsa.go.jp/jppfs/hwy/role/label | http://www.xbrl.org/2003/role/link |