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cm:Member: us-gaap:AociLiabilityForFuturePolicyBenefitParentMember
Standard label: AOCI, Liability for Future Policy Benefit, Parent [Member]
Name: us-gaap:AociLiabilityForFuturePolicyBenefitParentMember
Documentation: Accumulated other comprehensive income (loss) (AOCI) from (increase) decrease in liability for future policy benefit from change in discount rate, attributable to parent.
Object type: cm:Member
Data type: [Member] (nonnum:domainItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: true
Workiva Wdesk Taxonomy Analyzer: us-gaap:AociLiabilityForFuturePolicyBenefitParentMember

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Labels
Label Role Language
AOCI, Liability for Future Policy Benefit, Parent [Member] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 220 10 45 14A http://www.xbrl.org/2003/role/disclosureRef 220
FASB Accounting Standards Codification 220 10 45 10A (m) http://www.xbrl.org/2003/role/disclosureRef 220
FASB Accounting Standards Codification 810 10 50 1A (c )(3) http://www.xbrl.org/2003/role/disclosureRef 810