| Total holding of share certificates, etc. by special interest parties (N/A) | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total holding of share certificates, etc. by special interest parties (N/A) | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 特別関係者による株券等の所有状況(特別関係者合計)(該当なし) | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 特別関係者による株券等の所有状況(特別関係者合計)(該当なし) | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |