| Standard label: | Investment Sold, Not yet Purchased, Unrestricted, Carrying Value Per Unit at Date When Enforceable Right to Acquire was Obtained |
| Name: | us-gaap:InvestmentSoldNotYetPurchasedUnrestrictedCarryingValuePerUnitAtDateWhenEnforceableRightToAcquireWasObtained |
| Documentation: | The carrying value per unit of investment of unrestricted investment of the same issue as the restricted investment during the preceding year at the date on which an enforceable right to acquire the investments was obtained. |
| Object type: | cm:Concept |
| Data type: | srt-types:perUnitItemType |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:InvestmentSoldNotYetPurchasedUnrestrictedCarryingValuePerUnitAtDateWhenEnforceableRightToAcquireWasObtained |
| Label | Role | Language |
| Investment Sold, Not yet Purchased, Unrestricted, Carrying Value Per Unit at Date When Enforceable Right to Acquire was Obtained | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 946 320 S99 1 (SX 210.12-12(6)(b)(2)) | http://fasb.org/us-gaap/role/ref/legacyRef | 946 |
| FASB Accounting Standards Codification 946 320 S99 4 (SX 210.12-12C(9)(b)(2)) | http://fasb.org/us-gaap/role/ref/legacyRef | 946 |