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cm:Level3TextBlock: us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Standard label: Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Name: us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Documentation: Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.
Object type: cm:Level3TextBlock
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:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock

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Labels
Label Role Language
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 260 10 50 1 http://fasb.org/us-gaap/role/ref/legacyRef 260