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cm:Concept: us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount
Standard label: Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost
Name: us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount
Documentation: Amount of investment in debt security, measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.
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:HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount

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Labels
Label Role Language
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 320 10 50 5 (f)(4) http://fasb.org/us-gaap/role/ref/legacyRef 320
FASB Accounting Standards Codification 942 320 50 3 (d) http://fasb.org/us-gaap/role/ref/legacyRef 942