cm:Concept: us-gaap:SalvageAndSubrogationRecoveriesDescription
| Salvage and Subrogation Recoveries, Description |
| us-gaap:SalvageAndSubrogationRecoveriesDescription |
| A description of the sources of the amount received by an insurer from the sale of property (usually damaged) on which the insurer has paid a total claim to the insured and has obtained title to the property and the right to pursue any course of recovery of damages, in its name or in the name of the policyholder, against a third party who is liable for costs relating to an insured event that have been paid by the insurer. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:SalvageAndSubrogationRecoveriesDescription |