| 現金及び現金同等物の残高 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の残高 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の期首残高 | ja | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の期末残高 | ja | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の期首残高 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/ConsolidatedInterim/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の中間期末残高 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/ConsolidatedInterim/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の期首残高 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedInterim/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の中間期末残高 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedInterim/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の期首残高 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/ConsolidatedQuarterly/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の四半期末残高 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/ConsolidatedQuarterly/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の期首残高 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedQuarterly/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| 現金及び現金同等物の四半期末残高 | ja | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedQuarterly/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents at beginning of period | en | http://disclosure.edinet-fsa.go.jp/jppfs/ConsolidatedInterim/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents at end of period | en | http://disclosure.edinet-fsa.go.jp/jppfs/ConsolidatedInterim/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents at beginning of period | en | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedInterim/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents at end of period | en | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedInterim/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents at beginning of period | en | http://disclosure.edinet-fsa.go.jp/jppfs/ConsolidatedQuarterly/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents at end of period | en | http://disclosure.edinet-fsa.go.jp/jppfs/ConsolidatedQuarterly/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents at beginning of period | en | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedQuarterly/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Cash and cash equivalents at end of period | en | http://disclosure.edinet-fsa.go.jp/jppfs/NonConsolidatedQuarterly/role/periodEndLabel | http://www.xbrl.org/2003/role/link |