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cm:Level3TextBlock: us-gaap:ScheduleOfClosedBlockAssetsAndLiabilities
Standard label: Schedule of Closed Block Assets and Liabilities [Table Text Block]
Name: us-gaap:ScheduleOfClosedBlockAssetsAndLiabilities
Documentation: Tabular disclosure of summarized financial data of the closed block, typically including the liabilities of the closed block, assets allocated thereto, and maximum expected future earnings from the operations thereof.
Object type: cm:Level3TextBlock
Data type: Text Block (HTML) (nonnum:textBlockItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:ScheduleOfClosedBlockAssetsAndLiabilities

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Labels
Label Role Language
Schedule of Closed Block Assets and Liabilities [Table Text Block] http://www.xbrl.org/2003/role/label 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