IndexOpen Option Contracts Written [Table]
| Name | OpenOptionContractsWrittenTable |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrldt:hypercubeItem |
| Balance | None |
| Nillable | True |
| Abstract | True |
Labels
| Text | Lang | Role | Container role |
|---|---|---|---|
| Open Option Contracts Written [Table] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Listing of open option contracts written. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
References
| Name | Value | Role |
|---|---|---|
| Publisher | FASB | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 946 | http://www.xbrl.org/2003/role/disclosureRef |
| SubTopic | 320 | http://www.xbrl.org/2003/role/disclosureRef |
| Section | S99 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 5 | http://www.xbrl.org/2003/role/disclosureRef |
| Subparagraph | (SX 210.12-13) | http://www.xbrl.org/2003/role/disclosureRef |
| URI | http://asc.fasb.org/extlink&oid=120401592&loc=d3e611282-123010 | http://www.xbrl.org/2003/role/disclosureRef |