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cm:Concept: us-gaap:IncreaseDecreaseInFairValueOfPriceRiskFairValueHedgingInstruments1
Standard label: Increase (Decrease) in Fair Value of Price Risk Fair Value Hedging Instruments
Name: us-gaap:IncreaseDecreaseInFairValueOfPriceRiskFairValueHedgingInstruments1
Documentation: Amount of unrealized gain (loss) related to the fair value of price risk derivatives designated as fair value hedging instruments, as offset by the gain (loss) on the hedged item to the extent that the fair value hedge is determined to be effective.
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:IncreaseDecreaseInFairValueOfPriceRiskFairValueHedgingInstruments1

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Labels
Label Role Language
Increase (Decrease) in Fair Value of Price Risk Fair Value Hedging Instruments http://www.xbrl.org/2003/role/label en-US

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