| 借入金、長期未払債務、リース債務、雑固定負債及びコマーシャル・ペーパー明細表 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 借入金、長期未払債務、リース債務、雑固定負債及びコマーシャル・ペーパー明細表、電気事業 [目次項目] | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Annexed detailed schedule of borrowings, long-term payables, lease obligations, other non-current liabilities and commercial papers | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Annexed detailed schedule of borrowings, long-term payables, lease obligations, other non-current liabilities and commercial papers-ELE [heading] | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |