| Derivados crediticios, importe nominal | es | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Derivados crediticios, importe nominal al comienzo del periodo | es | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Derivados crediticios, importe nominal al final del periodo | es | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Credit derivative, nominal amount | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Credit derivative, nominal amount at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Credit derivative, nominal amount at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |