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cm:Concept: us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForLetterOfCreditFacilities
Standard label: Pledged Financial Instruments, Not Separately Reported, Securities for Letter of Credit Facilities
Name: us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForLetterOfCreditFacilities
Documentation: The carrying amount as of the date of the latest financial statement presented of securities which are owned but transferred to serve as collateral for letter of credit arrangements, and for which the transferee does not have the right by contract or custom to sell or re-pledge them to an unrelated party.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: As Of (instant)
Balance type: Debit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForLetterOfCreditFacilities

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Labels
Label Role Language
Pledged Financial Instruments, Not Separately Reported, Securities for Letter of Credit Facilities http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 860 30 50 1A (b)(1)(i) http://fasb.org/us-gaap/role/ref/legacyRef 860