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cm:Level2TextBlock: us-gaap:PremiumsReceivableBasisOfAccountingPolicy
Standard label: Premiums Receivable, Basis of Accounting, Policy [Policy Text Block]
Name: us-gaap:PremiumsReceivableBasisOfAccountingPolicy
Documentation: Disclosure of accounting policy for determining the gross carrying amount of premiums due from policyholders, insureds, and other insurance entities.
Object type: cm:Level2TextBlock
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:PremiumsReceivableBasisOfAccountingPolicy

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Labels
Label Role Language
Premiums Receivable, Basis of Accounting, Policy [Policy Text Block] http://www.xbrl.org/2003/role/label en-US

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References
Reference Role Topic
FASB Accounting Standards Codification 944 310 http://www.xbrl.org/2009/role/commonPracticeRef 944