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cm:Concept: us-gaap:ExcessOfReportedClosedBlockLiabilitiesOverAssetsDesignatedToClosedBlock
Standard label: Excess of Reported Closed Block Liabilities over Assets Designated to Closed Block
Name: us-gaap:ExcessOfReportedClosedBlockLiabilitiesOverAssetsDesignatedToClosedBlock
Documentation: The difference between the liabilities of and the assets allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: As Of (instant)
Balance type: Credit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:ExcessOfReportedClosedBlockLiabilitiesOverAssetsDesignatedToClosedBlock

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Labels
Label Role Language
Excess of Reported Closed Block Liabilities over Assets Designated to Closed Block http://www.xbrl.org/2003/role/label en-US
Excess of Reported Closed Block Liabilities over Assets Designated to Closed Block, Total http://www.xbrl.org/2003/role/totalLabel en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 944 805 50 3 (b) http://fasb.org/us-gaap/role/ref/legacyRef 944
FASB Accounting Standards Codification 944 805 55 4 http://fasb.org/us-gaap/role/ref/legacyRef 944