| Decrease through balances reversed in current period, regulatory deferral account credit balances | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Decrease through balances reversed in current period, regulatory deferral account credit balances | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| The decrease in regulatory deferral account credit balances resulting from balances reversed in the current period. [Refer: Regulatory deferral account credit balances] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Vähenemine jooksval perioodil summade tühistamise tõttu, reguleeritud hinnatingimustes müügitulu deebetsaldo | et | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Reguleeritud hinnatingimustes müügitulu kreeditsaldo vähenemine, mis tuleneb jooksval perioodil tühistatud summadest. [Viide: reguleeritud hinnatingimustes müügitulu kreeditsaldo] | et | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Vähenemine jooksval perioodil summade tühistamise tõttu, reguleeritud hinnatingimustes müügitulu deebetsaldo | et | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |