| Standard label: | Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge |
| Name: | us-gaap:MaximumLengthOfTimeHedgedInInterestRateCashFlowHedge1 |
| Documentation: | Maximum period the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. |
| Object type: | cm:Concept |
| Data type: | xbrli:durationItemType |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:MaximumLengthOfTimeHedgedInInterestRateCashFlowHedge1 |
| Label | Role | Language |
| Maximum Length of Time Hedged in Interest Rate Cash Flow Hedge | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 815 30 50 1 (d) | http://fasb.org/us-gaap/role/ref/legacyRef | 815 |