| Standard label: | Capitalized Interest Costs, Including Allowance for Funds Used During Construction |
| Name: | us-gaap:InterestCostsIncurredCapitalized |
| Documentation: | Amount of interest capitalized, including amount of allowance for funds used during construction. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:InterestCostsIncurredCapitalized |
| Label | Role | Language |
| Capitalized Interest Costs, Including Allowance for Funds Used During Construction | http://www.xbrl.org/2003/role/label | en-US |
| Capitalized Interest Costs, Including Allowance for Funds Used During Construction, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 980 835 45 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 980 |