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cm:Concept: us-gaap:JuniorSubordinatedNotes
Standard label: Junior Subordinated Notes
Name: us-gaap:JuniorSubordinatedNotes
Documentation: Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.
Object type: cm:Concept
Data type: Monetary (xbrli:monetaryItemType)
Period type: As Of (instant)
Balance type: Credit
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:JuniorSubordinatedNotes

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Labels
Label Role Language
Junior Subordinated Notes http://www.xbrl.org/2003/role/label en-US
Junior Subordinated Notes, Total http://www.xbrl.org/2003/role/totalLabel en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02(22)) http://fasb.org/us-gaap/role/ref/legacyRef 210
FASB Accounting Standards Codification 942 210 S99 1 (SX 210.9-03(16)) http://fasb.org/us-gaap/role/ref/legacyRef 942
FASB Accounting Standards Codification 944 210 S99 1 (SX 210.7-03(16)(a)) http://fasb.org/us-gaap/role/ref/legacyRef 944