| Standard label: | Variable Interest Entity, Consolidated, Liabilities, No Recourse |
| Name: | us-gaap:VariableInterestEntityConsolidatedLiabilitiesNoRecourse |
| Documentation: | Amount of consolidated variable interest entity's (VIE) liabilities that do not have recourse to general credit of primary beneficiary. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:VariableInterestEntityConsolidatedLiabilitiesNoRecourse |
| Label | Role | Language |
| Variable Interest Entity, Consolidated, Liabilities, No Recourse | http://www.xbrl.org/2003/role/label | en-US |
| Variable Interest Entity, Consolidated, Liabilities, No Recourse, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 810 10 50 3 (c) | http://fasb.org/us-gaap/role/ref/legacyRef | 810 |
| FASB Accounting Standards Codification 810 10 45 25 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 810 |