| Standard label: | Deposit Assets |
| Name: | us-gaap:DepositAssets |
| Documentation: | The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement. |
| 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:DepositAssets |
| Label | Role | Language |
| Deposit Assets | http://www.xbrl.org/2003/role/label | en-US |
| Deposit Assets, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02.8,17) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |