cm:Concept: us-gaap:ShortdurationInsuranceContractsClaimFrequencyMethodologies
| Short-duration Insurance Contracts, Claim Frequency, Methodologies |
| us-gaap:ShortdurationInsuranceContractsClaimFrequencyMethodologies |
| Description of methodologies and changes in methodologies used in calculating cumulative claim frequency information for short-duration insurance contracts. Includes, but is not limited to, whether frequency is measured by claim event or individual claimant and how claims that do not result in a liability are considered. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
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| false |
| us-gaap:ShortdurationInsuranceContractsClaimFrequencyMethodologies |