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cm:Axis: us-gaap:DerivativeInstrumentsGainLossByHedgingRelationshipAxis
Standard label: Hedging Relationship [Axis]
Name: us-gaap:DerivativeInstrumentsGainLossByHedgingRelationshipAxis
Documentation: Information by type of hedging relationship.
Object type: cm:Axis
Data type: Text/String (xbrli:stringItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: true
Workiva Wdesk Taxonomy Analyzer: us-gaap:DerivativeInstrumentsGainLossByHedgingRelationshipAxis

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Labels
Label Role Language
Hedging Relationship [Axis] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 815 10 50 4A (b) http://fasb.org/us-gaap/role/ref/legacyRef 815
FASB Accounting Standards Codification 815 10 50 4C http://fasb.org/us-gaap/role/ref/legacyRef 815
FASB Accounting Standards Codification 815 10 50 2 http://fasb.org/us-gaap/role/ref/legacyRef 815