| Standard label: | Public Utilities, Inventory |
| Name: | us-gaap:PublicUtilitiesInventory |
| Documentation: | The period end amount for a type of inventory held by the utility in a schedule of inventories. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:PublicUtilitiesInventory |
| Label | Role | Language |
| Public Utilities, Inventory | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02(6)(a)) | http://www.xbrl.org/2009/role/commonPracticeRef | 210 |
| Part Of Roll Up: |
| us-gaap:InventoryGross |