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cm:Axis: us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTermsAxis
Standard label: Schedule of Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Axis]
Name: us-gaap:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTermsAxis
Documentation: Represents settlement terms for the group of mandatorily redeemable securities, including the description and the details of all terms for each outstanding financial instrument and each settlement option.
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:ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTermsAxis

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Labels
Label Role Language
Schedule of Financial Instruments Subject to Mandatory Redemption by Settlement Terms [Axis] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 480 10 45 2A http://fasb.org/us-gaap/role/ref/legacyRef 480
FASB Accounting Standards Codification 480 10 50 1 http://fasb.org/us-gaap/role/ref/legacyRef 480
FASB Accounting Standards Codification 480 10 50 2 http://fasb.org/us-gaap/role/ref/legacyRef 480