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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Additional Information) (Details) | Mar. 31, 2019 $ / Units
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Significant Accounting Policies [Line Items] |
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets | 350
Creation Baskets |
Significant Accounting Policies [Line Items] |
Number of Shares per basket | 50,000
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets | 50,000
Prior to July 1, 2011 |
Significant Accounting Policies [Line Items] |
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets | 350

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- Details
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Balance Type: |
Period Type: |

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- Details
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