| 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 |
| Cúlchiste gnóthachan agus caillteanas ó infheistíochtaí in ionstraimí cothromais [member] | ga | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Seasann an ball seo do chomhpháirt chothromais lena léirítear na gnóthachain agus caillteanais charntha ó infheistíochtaí in ionstraimí cothromais a d’ainmnigh an t‑eintiteas ag luach cóir trí ioncam cuimsitheach eile. | ga | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |