| Other cash payments to acquire interests in joint ventures, classified as investing activities | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Other cash payments to acquire interests in joint ventures | en | http://www.xbrl.org/2009/role/negatedTerseLabel | http://www.xbrl.org/2003/role/link |
| The cash outflow to acquire interests in joint ventures (other than payments for those instruments considered to be cash equivalents or those held for dealing or trading purposes), classified as investing activities. [Refer: Joint ventures [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Íocaíochtaí eile in airgead tirim chun leasanna i gcomhfhiontair a fháil, a aicmítear mar ghníomhaíochtaí infheistíochta | ga | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| An t‑eis‑sreabhadh airgid chun leasanna i gcomhfhiontair a fháil (seachas íocaíochtaí ar na hionstraimí sin a bhreithnítear a bheith mar choibhéisí airgid nó iad sin arna sealbhú chun críocha déileála nó trádála), a aicmítear mar ghníomhaíochtaí infheistíochta. [Féach: Comhfhiontair [member]] | ga | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Íocaíochtaí eile in airgead tirim chun leasanna i gcomhfhiontair a fháil | ga | http://www.xbrl.org/2009/role/negatedTerseLabel | http://www.xbrl.org/2003/role/link |