cm:Level3TextBlock: us-gaap:ScheduleOfQuantitativeInformationAboutSecuritizedAssetsAndAnyOtherFinancialAssetsManagedTogetherTextBlock
Assets that Continue to be Recognized, Transferred Financial Assets and Other Financial Assets Managed Together [Table Text Block] |
us-gaap:ScheduleOfQuantitativeInformationAboutSecuritizedAssetsAndAnyOtherFinancialAssetsManagedTogetherTextBlock |
Tabular disclosure of transferred financial assets that continue to be recognized and other financial assets that it manages together with them. Includes, but is not limited to, delinquencies and credit losses, after recoveries. |
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us-gaap:ScheduleOfQuantitativeInformationAboutSecuritizedAssetsAndAnyOtherFinancialAssetsManagedTogetherTextBlock |