| Standard label: | Derivative, Average Swaption Interest Rate |
| Name: | us-gaap:DerivativeAverageSwaptionInterestRate |
| Documentation: | Average fixed interest rate that will be received or paid upon exercise of a group of interest rate swaption contracts. |
| Object type: | cm:Concept |
| Data type: | Percent (num:percentItemType) |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DerivativeAverageSwaptionInterestRate |
| Label | Role | Language |
| Derivative, Average Swaption Interest Rate | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |