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cm:Concept: us-gaap:OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterReclassificationAdjustmentTax
Standard label: Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, after Reclassification Adjustment, Tax
Name: us-gaap:OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterReclassificationAdjustmentTax
Documentation: Amount, after reclassification adjustment, of tax expense (benefit) of 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: For Period (duration)
Balance type: Debit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterReclassificationAdjustmentTax

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

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References
Reference Role Topic
FASB Accounting Standards Codification 220 10 45 10A (l) http://www.xbrl.org/2003/role/disclosureRef 220
FASB Accounting Standards Codification 220 10 45 12 http://www.xbrl.org/2003/role/disclosureRef 220

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