| Investments in associates accounted for using equity method | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Investments in associates accounted for using equity method | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| The amount of investments in associates accounted for using the equity method. [Refer: Associates [member]; Investments accounted for using equity method] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Inversiones en asociadas contabilizadas utilizando el método de la participación | es | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Inversiones en empresas asociadas contabilizadas usando el método de la participación | es | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Investments in associates accounted for using equity method | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |