| Standard label: | Fair Value, Concentration of Risk, Commitments |
| Name: | us-gaap:FairValueConcentrationOfRiskCommitments |
| Documentation: | This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties. |
| 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:FairValueConcentrationOfRiskCommitments |
| Label | Role | Language |
| Fair Value, Concentration of Risk, Commitments | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 10 S99 1 (SX 210.5-02(25)) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 942 210 S99 1 (SX 210.9-03(17)) | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |
| FASB Accounting Standards Codification 944 210 S99 1 (SX 210.7-03(19)) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |