| Standard label: | Inventory [Domain] |
| Name: | us-gaap:PublicUtilitiesInventoryTypeDomain |
| Documentation: | Tangible personal property that is held for sale in the ordinary course of business, in process of production for such sale or is to be currently consumed in the production of goods or services to be available for sale. |
| Object type: | cm:Member |
| Data type: | [Member] (nonnum:domainItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PublicUtilitiesInventoryTypeDomain |
| Label | Role | Language |
| Inventory [Domain] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |