| Contingent liability for decommissioning, restoration and rehabilitation costs [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| This member stands for a contingent liability relating to decommissioning, restoration and rehabilitation costs. [Refer: Contingent liabilities [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Eemaldamise, taastamise ja parandamise kuludega seotud tingimuslik kohustis [member] | et | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| See liige kajastab tingimuslikku kohustist, mis on seotud eemaldamise, taastamise ja parandamise kuludega. [Viide: tingimuslikud kohustised [member]] | et | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |