| Restructuring provision | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total restructuring provision | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The amount of provision for restructuring, such as the sale or termination of a line of business; closure of business locations in a country or region or relocation of activities from one country or region to another; changes in management structure; and fundamental reorganisations that have a material effect on the nature and focus of the entity's operations. [Refer: Other provisions] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Provisiones por reestructuración | es | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total de otras provisiones de reestructuración | es | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |