cm:Concept: us-gaap:MalpracticeInsurancePercentageOfPremiumsPaidToCaptiveInsurer
| Malpractice Insurance, Percentage of Premiums Paid to Captive Insurer |
| us-gaap:MalpracticeInsurancePercentageOfPremiumsPaidToCaptiveInsurer |
| Amount of the premiums paid by the entity to a partially-owned captive insurer. Express as a percentage of total premiums received by the captive insurer from all sources. |
| cm:Concept |
| Percent (num:percentItemType) |
| As Of (instant) |
| (no balance type) |
| false |
| us-gaap:MalpracticeInsurancePercentageOfPremiumsPaidToCaptiveInsurer |