| 報告セグメントごとの固定資産の減損損失に関する情報 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 報告セグメントごとの固定資産の減損損失に関する情報 [タイトル項目] | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Disclosure of impairment losses on non-current assets for each reportable segment | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Disclosure of impairment losses on non-current assets for each reportable segment [abstract] | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |