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cm:Member: us-gaap:UndistributedNetRealizedGainOrLossOnSaleOfPropertiesMember
Standard label: Undistributed Net Realized Gain (Loss) on Sale of Properties [Member]
Name: us-gaap:UndistributedNetRealizedGainOrLossOnSaleOfPropertiesMember
Documentation: This element represents the accumulated amount as of the reporting date of undistributed income derived from the gain (loss) on sale of properties which is otherwise disclosed.
Object type: cm:Member
Data type: [Member] (nonnum:domainItemType)
Period type: For Period (duration)
Balance type: (no balance type)
Abstract: true
Workiva Wdesk Taxonomy Analyzer: us-gaap:UndistributedNetRealizedGainOrLossOnSaleOfPropertiesMember

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Labels
Label Role Language
Undistributed Net Realized Gain (Loss) on Sale of Properties [Member] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 974 10 S99 1 (SX 210.3-15.(a)(2)(ii)) http://fasb.org/us-gaap/role/ref/legacyRef 974