| 付帯事業営業収益 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 営業収益 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedInterim/role/label | http://www.xbrl.org/2003/role/link |
| 営業収益 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedQuarterly/role/label | http://www.xbrl.org/2003/role/link |
| 付帯事業営業収益、鉄道事業 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 付帯事業営業収益合計 | ja | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| 営業収益合計 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedInterim/role/totalLabel | http://www.xbrl.org/2003/role/link |
| 営業収益合計 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedQuarterly/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Operating revenue - incidental | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Operating revenue | en | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedInterim/role/label | http://www.xbrl.org/2003/role/link |
| Operating revenue | en | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedQuarterly/role/label | http://www.xbrl.org/2003/role/link |
| Operating revenue-incidental-RWY | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Total operating revenue - incidental | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Total operating revenue | en | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedInterim/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Total operating revenue | en | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedQuarterly/role/totalLabel | http://www.xbrl.org/2003/role/link |