| Increase (decrease) through other changes, regulatory deferral account credit balances | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Total increase (decrease) through other changes, 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 resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Regulatory deferral account credit balances] | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Méadú (laghdú) trí athruithe eile, iarmhéideanna sochair cuntais iarchurtha rialála | ga | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| An méadú (laghdú) ar iarmhéideanna sochair cuntais iarchurtha rialála a eascraíonn as athruithe nach nochtann an t‑eintiteas ar leithligh sa ráiteas nó sa nóta céanna. [Féach: Iarmhéideanna sochair cuntais iarchurtha rialála] | ga | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Méadú (laghdú) iomlán trí athruithe eile, iarmhéideanna sochair cuntais iarchurtha rialála | ga | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |