| Standard label: | Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments and Tax |
| Name: | us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax |
| Documentation: | Amount, before tax and adjustments, of gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax |
| Label | Role | Language |
| Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), before Adjustments and Tax | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 220 10 45 10A (dd) | http://www.xbrl.org/2003/role/disclosureRef | 220 |
| FASB Accounting Standards Codification 220 10 45 11 | http://www.xbrl.org/2003/role/disclosureRef | 220 |
| FASB Accounting Standards Codification 815 10 50 4C (bb) | http://www.xbrl.org/2003/role/disclosureRef | 815 |
| FASB Accounting Standards Codification 815 10 50 4CCC (c) | http://www.xbrl.org/2003/role/disclosureRef | 815 |
| FASB Accounting Standards Codification 815 20 45 3 | http://www.xbrl.org/2003/role/disclosureRef | 815 |