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cm:Concept: us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
Standard label: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax
Name: us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
Documentation: Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.
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:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax

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Labels
Label Role Language
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 220 10 45 10A (d) http://www.xbrl.org/2003/role/disclosureRef 220
FASB Accounting Standards Codification 220 10 45 11 http://www.xbrl.org/2003/role/disclosureRef 220
FASB Accounting Standards Codification 815 10 50 4C (b) http://www.xbrl.org/2003/role/disclosureRef 815
FASB Accounting Standards Codification 815 10 50 4A (b)(2) http://www.xbrl.org/2003/role/disclosureRef 815
FASB Accounting Standards Codification 815 20 45 3 http://www.xbrl.org/2003/role/disclosureRef 815