cm:Concept: us-gaap:ClosedBlockAssetsAndLiabilitiesDisclosures
| Closed Block Assets and Liabilities, Disclosures |
| us-gaap:ClosedBlockAssetsAndLiabilitiesDisclosures |
| A schedule reflecting the liabilities of the segregated group of participating or dividend-paying policies and contracts identified as the closed block and the assets allocated to the closed block. along with the assets backing them (known as a closed block) established as a way to protect the interests of preexisting policyholders from the competing interests of the stockholders assets, including all assets and liabilities, the net liability balance, any adjustments for net liability amounts representing accumulated other comprehensive income and the balance of maximum future earnings to be recognized from the closed block. Typically included in summarized financial data format. |
| cm:Concept |
| Text/String (xbrli:stringItemType) |
| For Period (duration) |
| (no balance type) |
| false |
| us-gaap:ClosedBlockAssetsAndLiabilitiesDisclosures |