| Standard label: | Price Risk Derivatives, at Fair Value, Net |
| Name: | us-gaap:PriceRiskDerivativesAtFairValueNet |
| Documentation: | Fair value as of the balance sheet date of price risk derivative assets, net of price risk derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet. |
| 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:PriceRiskDerivativesAtFairValueNet |
| Label | Role | Language |
| Price Risk Derivatives, at Fair Value, Net | http://www.xbrl.org/2003/role/label | en-US |
| Price Risk Derivatives, at Fair Value, Net, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |