| Standard label: | Units of Partnership Interest, Amount |
| Name: | us-gaap:UnitsOfPartnershipInterestAmount |
| Documentation: | The number of units or equivalent units outstanding for all classes. |
| Object type: | cm:Concept |
| Data type: | Shares (xbrli:sharesItemType) |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:UnitsOfPartnershipInterestAmount |
| Label | Role | Language |
| Units of Partnership Interest, Amount | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 272 10 50 3 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 272 |
| FASB Accounting Standards Codification 505 10 S99 5 (SAB TOPIC 4.F) | http://fasb.org/us-gaap/role/ref/legacyRef | 505 |