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cm:Concept: us-gaap:MarketRiskBenefitIncreaseDecreaseFromActualPolicyholderBehaviorDifferentFromExpected
Standard label: Market Risk Benefit, Increase (Decrease) from Actual Policyholder Behavior Different from Expected
Name: us-gaap:MarketRiskBenefitIncreaseDecreaseFromActualPolicyholderBehaviorDifferentFromExpected
Documentation: Amount of increase (decrease) in contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk from change associated with actual policyholder behavior different from expected.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: For Period (duration)
Balance type: Credit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:MarketRiskBenefitIncreaseDecreaseFromActualPolicyholderBehaviorDifferentFromExpected

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Labels
Label Role Language
Market Risk Benefit, Increase (Decrease) from Actual Policyholder Behavior Different from Expected http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 944 40 50 7B (a) http://www.xbrl.org/2009/role/commonPracticeRef 944
FASB Accounting Standards Codification 944 40 55 29G http://www.xbrl.org/2003/role/exampleRef 944
FASB Accounting Standards Codification 944 40 55 13K (h) http://www.xbrl.org/2003/role/exampleRef 944
FASB Accounting Standards Codification 944 40 65 2 (h)(1) http://www.xbrl.org/2009/role/commonPracticeRef 944