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cm:Concept: us-gaap:AccumulatedOtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTax
Standard label: Accumulated Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, after Tax
Name: us-gaap:AccumulatedOtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTax
Documentation: Amount, after tax, of accumulated gain (loss) from increase (decrease) in instrument-specific credit risk of financial liability measured under fair value option.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: As Of (instant)
Balance type: Credit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:AccumulatedOtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTax

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Labels
Label Role Language
Accumulated Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, after Tax http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 825 10 50 30 (d)(1) http://www.xbrl.org/2003/role/disclosureRef 825

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Roll Up Relations
Part Of Roll Up:
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax