| Increase (decrease) in regulatory deferral account credit balances | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total increase (decrease) in regulatory deferral account credit balances | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| The increase (decrease) in regulatory deferral account credit balances. [Refer: Regulatory deferral account credit balances] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Creșterea (reducerea) soldurilor creditoare ale conturilor de amânare aferente activităților reglementate | ro | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Creșterea (reducerea) soldurilor creditoare ale conturilor de amânare aferente activităților reglementate. [Referințe: solduri creditoare ale conturilor de amânare aferente activităților reglementate] | ro | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Total creștere (reducere) a soldurilor creditoare ale conturilor de amânare aferente activităților reglementate | ro | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |