| Reserve of gains and losses from investments in equity instruments [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| This member stands for a component of equity representing accumulated gains and losses from investments in equity instruments that the entity has designated at fair value through other comprehensive income. | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Reserva de ganhos e perdas dos investimentos em instrumentos de capital próprio [member] | pt | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Este membro representa uma componente do capital próprio que representa os ganhos e perdas acumulados de investimentos em instrumentos de capital próprio designados pela entidade pelo justo valor através de outro rendimento integral. | pt | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |