| Decrease through disposals, regulatory deferral account debit balances | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Decrease through disposals, regulatory deferral account debit balances | en | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |
| The decrease in regulatory deferral account debit balances resulting from disposals. [Refer: Regulatory deferral account debit balances] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Reducere prin cedări, solduri debitoare ale conturilor de amânare aferente activităților reglementate | ro | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Reducerea soldurilor debitoare ale conturilor de amânare aferente activităților reglementate ca urmare a cedărilor. [Referințe: solduri debitoare ale conturilor de amânare aferente activităților reglementate] | ro | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Reducere prin cedări, solduri debitoare ale conturilor de amânare aferente activităților reglementate | ro | http://www.xbrl.org/2009/role/negatedLabel | http://www.xbrl.org/2003/role/link |