cm:Concept: us-gaap:PublicUtilitiesPropertyPlantAndEquipmentDescriptionOfElectricUtilityUseOfIntermediaryForPlantConstruction
| Public Utilities, Property, Plant and Equipment, Description of Electric Utility Use of Intermediary for Plant Construction |
| us-gaap:PublicUtilitiesPropertyPlantAndEquipmentDescriptionOfElectricUtilityUseOfIntermediaryForPlantConstruction |
| Describes the organization and purpose of the intermediary and the nature of its authorization to incur debt to finance construction. The note discloses the rate at which interest on this debt has been capitalized and the dollar amount for each period for which an income statement is presented. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:PublicUtilitiesPropertyPlantAndEquipmentDescriptionOfElectricUtilityUseOfIntermediaryForPlantConstruction |