| Gain (loss) on changes in effect of limiting net defined benefit asset to asset ceiling excluding interest income or expense, net defined benefit liability (asset) | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Loss (gain) on changes in effect of limiting net defined benefit asset to asset ceiling excluding interest income or expense, net defined benefit liability (asset) | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| The decrease (increase) in the net defined benefit liability (asset) resulting from the gain (loss) on changes in the effect of limiting a net defined benefit asset to the asset ceiling, excluding amounts included in interest income or expense. [Refer: Interest income; Net defined benefit liability (asset); Interest expense (income), net defined benefit liability (asset)] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Qligħ (telf) fuq il-bidliet fl-effett tal-limitazzjoni tal-assi tal-benefiċċju definit nett għal-limitu massimu tal-assi esklużi l-introjtu mill-imgħax jew l-ispiża tal-imgħax, obbligazzjoni (assi) tal-benefiċċju definit nett | mt | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| It-tnaqqis (iż-żieda) fl-obbligazzjoni (assi) tal-benefiċċju definit nett li jirriżultaw mill-qligħ (mit-telf) fuq il-bidliet fl-effett tal-limitazzjoni ta’ assi tal-benefiċċju definit nett għal-limitu massimu tal-assi, minbarra l-ammonti inklużi fl-introjtu mill-imgħax jew fl-ispiża tal-imgħax. [Refer: Introjtu mill-imgħax; Obbligazzjoni (assi) tal-benefiċċju definit nett; Spiża tal-imgħax (introjtu mill-imgħax), obbligazzjoni (assi) tal-benefiċċju definit nett] | mt | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |