| Standard label: | Deposit Contracts, Liabilities |
| Name: | us-gaap:DepositContractsLiabilities |
| Documentation: | Carrying amount of liabilities as of the balance sheet date pertaining to amounts received by the insurer or reinsurer from the insured (including a ceding company) under insurance or reinsurance contracts for which insurance risk is not transferred. |
| 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:DepositContractsLiabilities |
| Label | Role | Language |
| Deposit Contracts, Liabilities | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 340 30 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 340 |