| 1年以内に期限到来の関係会社長期借入金 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 1年以内に期限到来の関係会社長期借入金、流動負債、電気通信業 | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Current portion of long-term borrowings from subsidiaries and associates | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Current portion of long-term borrowings from subsidiaries and associates - CL - ELC | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |