| elementCreationTaxonomyVersion | 2008 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| SourceName | Taxonomy Technical Improvement | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2019 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2018-10 | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedReferences | true | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedLabels | true | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedDocumentation | true | http://fasb.org/srt/role/changeNote/changeNote |
| PreviousDocumentation | For brokers and dealers that are also commodity brokers, known as futures commission merchants, a description of the requirements for minimum financial requirements under the Commodity Exchange Act. | http://fasb.org/srt/role/changeNote/changeNote |
| Publisher | CFTC | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | Rule 17 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Number | 1 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Section | 17 | http://www.xbrl.org/2009/role/commonPracticeRef |