| Standard label: | Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Other Comprehensive Income [Extensible List] |
| Name: | us-gaap:FairValueAssetLiabilityRecurringBasisStillHeldUnrealizedGainLossStatementOfOtherComprehensiveIncomeExtensibleList |
| Documentation: | Indicates line item in statement in which other comprehensive income (OCI) is reported that includes unrealized gain (loss) from asset (liability) measured at fair value using unobservable input (level 3) and still held. |
| 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:FairValueAssetLiabilityRecurringBasisStillHeldUnrealizedGainLossStatementOfOtherComprehensiveIncomeExtensibleList |
| Label | Role | Language |
| Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized 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 (d) | http://www.xbrl.org/2003/role/disclosureRef | 820 |