| Property, plant and equipment | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Property, plant and equipment at beginning of period | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Property, plant and equipment at end of period | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Total property, plant and equipment | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Proprjetà, impjanti u tagħmir | mt | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| L-ammont ta’ assi tanġibbli li: (a) jinżammu għall-użu fil-produzzjoni jew fil-provvista ta’ prodotti jew ta’ servizzi, għall-kiri lil oħrajn, jew għal skopijiet amministrattivi; u (b) huma mistennija li jintużaw matul aktar minn perjodu wieħed. | mt | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Proprjetà, impjanti u tagħmir totali | mt | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Proprjetà, impjanti u tagħmir fil-bidu tal-perjodu | mt | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Proprjetà, impjanti u tagħmir fi tmiem il-perjodu | mt | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |