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cm:Member: us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskNoncontrollingInterestMember
Standard label: AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Noncontrolling Interest [Member]
Name: us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskNoncontrollingInterestMember
Documentation: Accumulated other comprehensive income (loss) (AOCI) from (increase) decrease in instrument-specific credit risk on contract or contract feature in long-duration contract issued by insurance entity protecting contract holder from other-than-nominal capital market risk and exposing insurance entity to other-than-nominal capital market risk, attributable to noncontrolling interest.
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:AociMarketRiskBenefitInstrumentSpecificCreditRiskNoncontrollingInterestMember

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Labels
Label Role Language
AOCI, Market Risk Benefit, Instrument-Specific Credit Risk, Noncontrolling Interest [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 (n) 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