| Standard label: | Nonmonetary Transaction, Gross Operating Revenue Recognized |
| Name: | us-gaap:NonmonetaryTransactionGrossOperatingRevenueRecognized |
| Documentation: | The amount of gross operating revenue recognized in a nonmonetary transaction. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:NonmonetaryTransactionGrossOperatingRevenueRecognized |
| Label | Role | Language |
| Nonmonetary Transaction, Gross Operating Revenue Recognized | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 845 10 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 845 |