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Summary of Significant Accounting Policies (Additional Information) (Details) | 6 Months Ended
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Jun. 30, 2014
Significant Accounting Policies [Line Items] |
Minimum likelihood of tax benefits being recognized upon ultimate settlement | 50.00%
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
Maximum |
Significant Accounting Policies [Line Items] |
Cash equivalents maturity period | 6 months

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- Definition Cash Equivalents, Maturity Period + References No definition available. + Details
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- Definition Fee Paid Per Order + References No definition available. + Details
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- Definition Percentage Of Income Tax Examination Minimum Likelihood of Tax Benefits Being Realized Upon Settlement + References No definition available. + Details
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- Details
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