| Standard label: | Fair Value, Recurring Basis, Unobservable Input Reconciliation, Asset (Liability), Gain (Loss), Statement of Other Comprehensive Income [Extensible List] |
| Name: | us-gaap:FairValueRecurringBasisUnobservableInputReconciliationAssetLiabilityGainLossStatementOfOtherComprehensiveIncomeExtensibleList |
| Documentation: | Indicates line item in statement in which other comprehensive income (OCI) is reported that includes gain (loss) from asset (liability) measured at fair value using unobservable input (level 3). |
| Object type: | cm:Concept |
| Data type: | srt-types:extensibleListItemType |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:FairValueRecurringBasisUnobservableInputReconciliationAssetLiabilityGainLossStatementOfOtherComprehensiveIncomeExtensibleList |
| Label | Role | Language |
| Fair Value, Recurring Basis, Unobservable Input Reconciliation, Asset (Liability), Gain (Loss), Statement of Other Comprehensive Income [Extensible List] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 820 10 50 2 (c)(1a) | http://www.xbrl.org/2003/role/disclosureRef | 820 |