| Income tax relating to changes in fair value of financial liability attributable to change in credit risk of liability included in other comprehensive income | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Income tax relating to changes in fair value of financial liability attributable to change in credit risk of liability 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 changes in the fair value of financial liabilities attributable to a change in the credit risk of those liabilities. [Refer: Credit risk [member]; Other comprehensive income] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Cáin ioncaim a bhaineann le hathruithe ar luach cóir dliteanais airgeadais is inchurtha i leith athrú ar riosca creidmheasa dliteanais 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 leis na hathruithe ar luach cóir na ndliteanas airgeadais is inchurtha i leith athrú ar riosca creidmheasa na ndliteanas sin. [Féach: Riosca creidmheasa [member]; Ioncam cuimsitheach eile] | ga | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Cáin ioncaim a bhaineann le hathruithe ar luach cóir dliteanais airgeadais is inchurtha i leith athrú ar riosca creidmheasa dliteanais a áirítear in ioncam cuimsitheach eile | ga | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |