| Investments in subsidiaries, joint ventures and associates reported in separate financial statements | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total investments in subsidiaries, joint ventures and associates reported in separate financial statements | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The amount of investments in subsidiaries, joint ventures and associates in an entity's separate financial statements. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries reported in separate financial statements] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Infheistíochtaí i bhfochuideachtaí, i gcomhfhiontair agus i ngnólachtaí comhlachaithe arna dtuairisciú i ráitis airgeadais ar leithligh | ga | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| An méid infheistíochtaí i bhfochuideachtaí, i gcomhfhiontair agus i ngnólachtaí comhlachaithe i ráitis airgeadais ar leithligh eintitis. [Féach: Gnólachtaí comhlachaithe [member]; Comhfhiontair [member]; Fochuideachtaí [member]; Infheistíochtaí i bhfochuideachtaí arna dtuairisciú i ráitis airgeadais ar leithligh] | ga | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Infheistíochtaí iomlána i bhfochuideachtaí, i gcomhfhiontair agus i ngnólachtaí comhlachaithe arna dtuairisciú i ráitis airgeadais ar leithligh | ga | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |