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cm:Level3TextBlock: us-gaap:ChangeInClosedBlockAssetsAndLiabilitiesMaximumFutureEarningsToBeRecognizedTableTextBlock
Standard label: Change in Closed Block Assets and Liabilities, Maximum Future Earnings to be Recognized [Table Text Block]
Name: us-gaap:ChangeInClosedBlockAssetsAndLiabilitiesMaximumFutureEarningsToBeRecognizedTableTextBlock
Documentation: Tabular disclosure of the changes in the maximum future earnings of the closed block.
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:ChangeInClosedBlockAssetsAndLiabilitiesMaximumFutureEarningsToBeRecognizedTableTextBlock

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Labels
Label Role Language
Change in Closed Block Assets and Liabilities, Maximum Future Earnings to be Recognized [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)(9) 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