| Standard label: | Financial Instruments, Owned, Other Sovereign Government Obligations, at Fair Value |
| Name: | us-gaap:FinancialInstrumentsOwnedOtherSovereignGovernmentObligationsAtFairValue |
| Documentation: | The fair value as of the balance sheet date of firm holdings in fixed income obligations issued by foreign governments. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:FinancialInstrumentsOwnedOtherSovereignGovernmentObligationsAtFairValue |
| Label | Role | Language |
| Financial Instruments, Owned, Other Sovereign Government Obligations, at Fair Value | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 940 320 45 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 940 |