| Deferred tax liability (asset) | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Deferred tax liability (asset) at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Deferred tax liability (asset) at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Net deferred tax liability (asset) | en | http://www.xbrl.org/2009/role/netLabel | http://www.xbrl.org/2003/role/link |
| The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Dliteanas cánach iarchurtha (sócmhainn) | ga | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| An méid dliteanas cánach iarchurtha nó sócmhainní. [Féach: Dliteanais chánach iarchurtha; Sócmhainní cánach iarchurtha] | ga | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Dliteanas cánach iarchurtha (sócmhainn) ag tús tréimhse | ga | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Dliteanas cánach iarchurtha (sócmhainn) ag deireadh tréimhse | ga | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Glandliteanas cánach iarchurtha (sócmhainn) | ga | http://www.xbrl.org/2009/role/netLabel | http://www.xbrl.org/2003/role/link |