| Period and price of purchase, etc., basis of calculation, and number of share certificates, etc. intended to purchase | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Period and price of purchase, etc., basis of calculation, and number of share certificates, etc. intended to purchase [heading] | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 買付け等の期間、買付け等の価格、算定の基礎及び買付予定の上場株券等の数 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 買付け等の期間、買付け等の価格、算定の基礎及び買付予定の上場株券等の数 [目次項目] | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |