| Income tax relating to hedges of investments in equity instruments included in other comprehensive income | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Income tax relating to hedges of investments in equity instruments included in other comprehensive income | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| The amount of income tax relating to amounts recognised in other comprehensive income in relation to hedges of investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: Other comprehensive income; Reserve of gains and losses on hedging instruments that hedge investments in equity instruments] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Cáin ioncaim a bhaineann le fáluithe infheistíochtaí in ionstraimí cothromais a áirítear in ioncam cuimsitheach eile | ga | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| An méid cánach ioncaim a bhaineann le méideanna a aithnítear in ioncam cuimsitheach eile i ndáil le fáluithe infheistíochtaí in ionstraimí cothromais a d’ainmnigh an t‑eintiteas ag luach cóir trí ioncam cuimsitheach eile. [Féach: Ioncam cuimsitheach eile; Cúlchiste gnóthachan agus caillteanas ar ionstraimí fálaithe lena bhfálaítear infheistíochtaí in ionstraimí cothromais] | ga | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Cáin ioncaim a bhaineann le fáluithe infheistíochtaí in ionstraimí cothromais a áirítear in ioncam cuimsitheach eile | ga | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |