| Related party transactions [abstract] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Related party transactions [abstract] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Transacciones con partes relacionadas [resumen] | es | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Transacciones con partes relacionadas [sinopsis] | es | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Related party transactions [abstract] | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |