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cm:Level1TextBlock: us-gaap:InvestmentTextBlock
Standard label: Investment [Text Block]
Name: us-gaap:InvestmentTextBlock
Documentation: The entire disclosure for investment.
Object type: cm:Level1TextBlock
Data type: Text Block (HTML) (nonnum:textBlockItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: false
Workiva Wdesk Taxonomy Analyzer: us-gaap:InvestmentTextBlock

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Labels
Label Role Language
Investment [Text Block] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 320 http://www.xbrl.org/2009/role/commonPracticeRef 320
FASB Accounting Standards Codification 321 http://www.xbrl.org/2009/role/commonPracticeRef 321
FASB Accounting Standards Codification 323 http://www.xbrl.org/2009/role/commonPracticeRef 323
FASB Accounting Standards Codification 325 http://www.xbrl.org/2009/role/commonPracticeRef 325