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cm:Level3TextBlock: us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTextBlock
Standard label: Schedule of Insured Financial Obligations with Credit Deterioration [Table Text Block]
Name: us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTextBlock
Documentation: Tabular disclosure of insured financial obligations with credit deterioration related to the claim liability on financial guarantee insurance contracts as of the end of each annual and interim reporting period detailing, at a minimum, the following for each surveillance category or grouping used to track and monitor the entity's insured financial obligations: (1) number of issued and outstanding financial guarantee insurance contracts; (2) remaining weighted average contract period; (3) insured contractual payments outstanding, segregating principal and interest; (4) gross claim liability; (5) gross potential recoveries; (6) net discount of both the claim liability and potential recoveries; (7) net claim liability; (8) reinsurance recoverable; and (9) unearned premium revenue.
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:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTextBlock

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Labels
Label Role Language
Schedule of Insured Financial Obligations with Credit Deterioration [Table Text Block] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 944 40 50 9 (a)(5), (b)(1) http://fasb.org/us-gaap/role/ref/legacyRef 944
FASB Accounting Standards Codification 944 40 55 34 http://fasb.org/us-gaap/role/ref/legacyRef 944