cm:Concept: us-gaap:StateInsuranceDepartmentStatutoryToNAICAmountOfReconcilingItem
| State Insurance Department, Statutory to NAIC, Amount of Reconciling Item |
| us-gaap:StateInsuranceDepartmentStatutoryToNAICAmountOfReconcilingItem |
| Amount of an item which resulted in a difference from applying state prescribed or permitted statutory accounting practices rather than statutory accounting practices prescribed by National Association of Insurance Commissioners. |
| cm:Concept |
| Monetary (xbrli:monetaryItemType) |
| As Of (instant) |
| Debit |
| false |
| us-gaap:StateInsuranceDepartmentStatutoryToNAICAmountOfReconcilingItem |