| 関係会社株式その他流動資産に属しない有価証券 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 関係会社株式その他流動資産に属しない有価証券、投資その他の資産 [タイトル項目] | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Shares of subsidiaries and associates and other non-current securities | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Shares of subsidiaries and associates and other non-current securities-IOA [abstract] | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |