| Public Utilities, Property, Plant and Equipment, Transmission and Distribution | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Public Utilities, Property, Plant and Equipment, Transmission and Distribution, Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Period end amount of property, plant and equipment (PPE) related to transmission and distribution owned by public utility. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |