| Deferred tax asset associated with regulatory deferral account balances | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Відстрочений податковий актив, пов'язаний із залишками рахунку відстрочених тарифних різниць | uk | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| The amount of deferred tax asset associated with regulatory deferral account balances. [Refer: Deferred tax assets; Regulatory deferral account balances [member]] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |