cm:Concept: us-gaap:StateInsuranceDepartmentStatutoryToNAICDescriptionOfReconcilingItem
| State Insurance Department, Statutory to NAIC, Description of Reconciling Item |
| us-gaap:StateInsuranceDepartmentStatutoryToNAICDescriptionOfReconcilingItem |
| Description of 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 |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:StateInsuranceDepartmentStatutoryToNAICDescriptionOfReconcilingItem |