| Losses on litigation settlements | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Losses on litigation settlements | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Losses on litigation settlements | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| Losses on litigation settlements | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| The losses on settlements of litigation. | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Pérdidas por la liquidación de litigios | es | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Pérdidas por la liquidación de litigios | es | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| Pérdidas por cancelaciones de litigios | es | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Losses on litigation settlements | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |