cm:Level2TextBlock: us-gaap:PresentValueOfFutureInsuranceProfitsPolicy
| Present Value of Future Insurance Profits, Policy [Policy Text Block] |
| us-gaap:PresentValueOfFutureInsuranceProfitsPolicy |
| Disclosure of accounting policy for determining PVFP and for amortizing it over future periods (methodologies and assumptions) in connection with the purchase of a life insurance company. It is also known as Value of Business Acquired, or VOBA. This element is appropriate for business combinations entered into before December 15, 2008. |
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| us-gaap:PresentValueOfFutureInsuranceProfitsPolicy |