| Regulatory deferral account debit balances [abstract] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Дебитни салда по сметки за отсрочени разчети по дейности с регулирани цени [abstract] | bg | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Debetní zůstatky účtů časového rozlišení při cenové regulaci [abstract] | cs | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| debetsaldi for regulatoriske aktiver og forpligtelser [abstract] | da | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Χρεωστικά υπόλοιπα μεταβατικών λογαριασμών ρυθμιζόμενων δραστηριοτήτων [abstract] | el | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Aktivische regulatorische Abgrenzungsposten [abstract] | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Saldos deudores de las cuentas de diferimientos de actividades reguladas [resumen] | es | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Reguleeritud hinnatingimustes müügitulu deebetsaldo [abstract] | et | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Hintasääntelystä johtuvien siirtyvien erien debetsaldot [abstract] | fi | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Soldes débiteurs de comptes de report réglementaires [abstract] | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Pasivna vremenska razgraničenja [abstract] | hr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Hatósági halasztott számlák tartozik egyenlegei [abstract] | hu | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| saldi a debito dei regulatory deferral account [abstract] | it | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Reguliuojamo atidėjimo sąskaitos debeto likučiai [abstract] | lt | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Regulatora noteikto atlikto kontu debeta atlikumi [abstract] | lv | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Bilanċi ta’ debitu tal-kont ta’ differiment regolatorju [abstract] | mt | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Uitgestelde debetrekeningen in verband met prijsregulering [abstract] | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Odroczone salda debetowe z regulowanej działalności [abstract] | pl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Saldos devedores dos diferimentos regulamentares [abstract] | pt | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Solduri debitoare ale conturilor de amânare aferente activităților reglementate [abstract] | ro | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Debetné zostatky na účtoch časového rozlíšenia pri cenovej regulácii [abstract] | sk | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Stanja v breme na kontih odloženih zneskov zaradi zakonske regulacije [abstract] | sl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Debetsaldon på konton för uppskjuten reglering [abstract] | sv | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |