| Other comprehensive income, before tax, net movement in regulatory deferral account balances related to items that will be reclassified to profit or loss | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Other comprehensive income, before tax, net movement in regulatory deferral account balances related to items that will be reclassified to profit or loss | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The amount of other comprehensive income, before tax, related to the net movement in regulatory deferral account balances that is related to items that will be reclassified to profit or loss. [Refer: Regulatory deferral account balances [member]; Other comprehensive income] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Drugi vseobsegajoči donos pred obdavčitvijo, čisto gibanje stanj na kontih odloženih zneskov zaradi zakonske regulacije, povezano s postavkami, ki bodo prerazvrščene v poslovni izid | sl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Znesek drugega vseobsegajočega donosa pred obdavčitvijo, povezanega s čistim gibanjem stanj na kontih odloženih zneskov zaradi zakonske regulacije, ki je povezano s postavkami, ki bodo prerazvrščene v poslovni izid. [glej: Stanja na kontih odloženih zneskov zaradi zakonske regulacije [member]; Drugi vseobsegajoči donos] | sl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Drugi vseobsegajoči donos pred obdavčitvijo, čisto gibanje stanj na kontih odloženih zneskov zaradi zakonske regulacije, povezano s postavkami, ki bodo prerazvrščene v poslovni izid | sl | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |