| Standard label: | Direct Financing Lease, Deferred Selling Profit, Explanation of Change |
| Name: | us-gaap:DirectFinancingLeaseDeferredSellingProfitExplanationOfChange |
| Documentation: | Description of nature and cause of change in deferred selling profit from direct financing lease. |
| Object type: | cm:Concept |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DirectFinancingLeaseDeferredSellingProfitExplanationOfChange |
| Label | Role | Language |
| Direct Financing Lease, Deferred Selling Profit, Explanation of Change | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 842 30 50 9 | http://www.xbrl.org/2003/role/disclosureRef | 842 |