| Decrease (increase) in net defined benefit liability (asset) resulting from return on plan assets excluding interest income or expense | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Increase (decrease) in net defined benefit liability (asset) resulting from return on plan assets excluding interest income or expense | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| The decrease (increase) in the net defined benefit liability (asset) resulting from the return on plan assets, excluding amounts included in interest income or expense. The return on plan assets is interest, dividends and other revenue derived from the plan assets, together with realised and unrealised gains or losses on the plan assets, less any costs of managing plan assets and less any tax payable by the plan itself, other than tax included in the actuarial assumptions used to measure the present value of the defined benefit obligation. [Refer: Plan assets [member]; Net defined benefit liability (asset); Actuarial assumptions [member]; Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Laghdú (méadú) ar ghlandliteanas sochair shainithe (sócmhainn) a eascraíonn as toradh ar shócmhainní plean gan ioncam úis ná speansas san áireamh] | ga | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Laghdú (méadú) ar ghlandliteanas sochair shainithe (sócmhainn) a eascraíonn as toradh ar shócmhainní plean gan ioncam úis ná costas san áireamh] Is éard is toradh ar shócmhainní plean ann ús, díbhinní agus ioncam eile a fhaightear ó shócmhainní plean, in éineacht le gnóthachain agus caillteanais réadaithe agus neamhréadaithe, lúide aon chostas a bhaineann le sócmhainní plean a bhainistiú agus lúide aon cháin iníoctha ag an bplean féin, seachas cáin a áirítear sna toimhdí achtúireacha a úsáidtear chun luach reatha na hoibleagáide sochair shainithe a thomhas. [Féach: Sócmhainní plean [member]; Glandliteanas sochair shainithe (sócmhainn); Toimhdí achtúireacha [member]; Méadú (laghdú) ar ghlandliteanas sochair shainithe (sócmhainn) a eascraíonn as speansas úis (ioncam)] | ga | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Laghdú (méadú) ar ghlandliteanas sochair shainithe (sócmhainn) a eascraíonn as toradh ar shócmhainní plean gan ioncam úis ná speansas san áireamh] | ga | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |