IndexIndustrial, Miscellaneous, and All Others [Member]
| Name | IndustrialMiscellaneousAndAllOthersMember |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | nonnum:domainItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
Labels
| Text | Lang | Role | Container role |
|---|---|---|---|
| This item represents investments by the reporting entity in equity securities issued by any type of company other than public utilities, banks, trusts, and insurance companies the investments in which are summarized elsewhere. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Industrial, Miscellaneous, and All Others [Member] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |