| Decrease in reimbursement rights related to defined benefit obligation, resulting from benefits paid | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Increase in reimbursement rights related to defined benefit obligation, resulting from benefits paid | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| The decrease in reimbursement rights related to defined benefit obligation, resulting from benefits paid. [Refer: Reimbursement rights related to defined benefit obligation, at fair value] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Laghdú ar chearta aisíocaíochta a bhaineann le hoibleagáid sochair shainithe, a leanann as sochair íoctha | ga | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| An laghdú ar chearta aisíocaíochta a bhaineann le hoibleagáid sochair shainithe, a leanann as sochair íoctha. [Féach: Cearta aisíocaíochta a bhaineann le hoibleagáid sochair shainithe, ag luach cóir] | ga | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Méadú ar chearta aisíocaíochta a bhaineann le hoibleagáid sochair shainithe, a leanann as sochair íoctha | ga | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |