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