IndexInvestment Holdings, Schedule of Investments [Text Block]
| Name | InvestmentHoldingsScheduleOfInvestmentsTextBlock |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | nonnum:textBlockItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
Labels
| Text | Lang | Role | Container role |
|---|---|---|---|
| The entire disclosure for investment holdings. This includes the information required in the supplementary schedule applicable to management investment companies listing holdings of unaffiliated investments. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Investment Holdings, Schedule of Investments [Text Block] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
References
| Name | Value | Role |
|---|---|---|
| Publisher | FASB | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Accounting Standards Codification | http://fasb.org/us-gaap/role/ref/legacyRef |
| Topic | 946 | http://fasb.org/us-gaap/role/ref/legacyRef |
| SubTopic | 320 | http://fasb.org/us-gaap/role/ref/legacyRef |
| URI | http://asc.fasb.org/subtopic&trid=2324412 | http://fasb.org/us-gaap/role/ref/legacyRef |