| Cost approach [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| This member stands for a valuation technique that reflects the amount that would be required currently to replace the service capacity of an asset (often referred to as 'current replacement cost'). | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Approċċ tal-kost [member] | mt | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Dan il-membru jirrappreżenta teknika ta’ valwazzjoni li tirrifletti l-ammont li jkun meħtieġ f’dak il-ħin sabiex tiġi sostitwita l-kapaċità tas-servizz ta’ assi (li ta’ spiss issir referenza għalih bħala l-’ kost kurrenti tas-sostituzzjoni’ ). | mt | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |