| Increase (decrease) in reimbursement rights related to defined benefit obligation, at fair value | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total increase (decrease) in reimbursement rights related to defined benefit obligation, at fair value | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The increase (decrease) in the fair value of reimbursement rights related to defined benefit obligation. [Refer: At fair value [member]; Reimbursement rights related to defined benefit obligation, at fair value] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Żieda (tnaqqis) fid-drittijiet ta’ rimborż relatati ma’ obbligu ta’ benefiċċju definit, bil-valur ġust | mt | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Iż-żieda (it-tnaqqis) bil-valur ġust tad-drittijiet ta’ rimborż relatati ma’ obbligu ta’ benefiċċju definit. [Refer: Bil-valur ġust [member]; Drittijiet ta’ rimborż relatati ma’ obbligu ta’ benefiċċju definit, skont il-valur ġust] | mt | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Żieda (tnaqqis) totali fid-drittijiet ta’ rimborż relatati ma’ obbligu ta’ benefiċċju definit, bil-valur ġust | mt | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |