| Tangible exploration and evaluation assets [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| This member stands for a class of property, plant and equipment representing tangible exploration and evaluation assets. [Refer: Exploration and evaluation assets [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Materijalna imovina za istraživanje i procjenu [member] | hr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Ovaj član označava klasu nekretnina, postrojenja i opreme koja predstavlja materijalnu imovinu za istraživanje i procjenu. [Referenca: Imovina za istraživanje i procjenu [member]] | hr | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |