| Standard label: | Collateral Securities Repledged, Delivered, or Used |
| Name: | us-gaap:CollateralSecuritiesRepledgedDeliveredOrUsed |
| Documentation: | The carrying value as of the balance sheet date of securities received as collateral from a counterparty that were re-pledged, sold, delivered or otherwise reused by the entity. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CollateralSecuritiesRepledgedDeliveredOrUsed |
| Label | Role | Language |
| Collateral Securities Repledged, Delivered, or Used | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 860 30 50 1A (c)(2) | http://fasb.org/us-gaap/role/ref/legacyRef | 860 |