| Exploration and evaluation assets [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| This member stands for exploration and evaluation expenditures recognised as assets in accordance with the entity's accounting policy. Exploration and evaluation expenditures are expenditures incurred by an entity in connection with the exploration for, and evaluation of, mineral resources before the technical feasibility and commercial viability of extracting a mineral resource are demonstrable. | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Assi ta’ esplorazzjoni u ta’ evalwazzjoni [member] | mt | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Dan il-membru jirrappreżenta l-infiq fuq l-esplorazzjoni u l-evalwazzjoni rikonoxxut bħala assi f’konformità mal-politika kontabilistika tal-entità. L-infiq fuq l-esplorazzjoni u l-evalwazzjoni huwa l-infiq imġarrab minn entità b’konnessjoni mal-esplorazzjoni għar-riżorsi minerali u mal-evalwazzjoni tagħhom qabel jintwerew il-fattibbiltà teknika u l-vijabbiltà kummerċjali tal-estrazzjoni ta’ riżorsa minerali. | mt | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |