cm:Level3TextBlock: us-gaap:ChangeInClosedBlockAssetsAndLiabilitiesMaximumFutureEarningsToBeRecognizedTableTextBlock
Change in Closed Block Assets and Liabilities, Maximum Future Earnings to be Recognized [Table Text Block] |
us-gaap:ChangeInClosedBlockAssetsAndLiabilitiesMaximumFutureEarningsToBeRecognizedTableTextBlock |
Tabular disclosure of the changes in the maximum future earnings of the closed block. |
cm:Level3TextBlock |
Text Block (HTML) (nonnum:textBlockItemType) |
For Period (duration) |
(no balance type) |
false |
us-gaap:ChangeInClosedBlockAssetsAndLiabilitiesMaximumFutureEarningsToBeRecognizedTableTextBlock |