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Condensed Schedule of Investments (Parenthetical) | 3 Months Ended
--- | ---
Mar. 31, 2016 USD ($)
Collateral Amount On Open Futures Contracts | $ 463,956,958
United States [Member] | US Treasury Bill Securities One [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.07%
Expiration date | 4/7/2016
United States [Member] | US Treasury Bill Securities Two [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.07%
Expiration date | 4/14/2016
United States [Member] | US Treasury Bill Securities Three [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.11%
Expiration date | 4/21/2016
United States [Member] | US Treasury Bill Securities Four [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.21%
Expiration date | 4/28/2016
United States [Member] | US Treasury Bill Securities Five [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.26%
Expiration date | 5/5/2016
United States [Member] | US Treasury Bill Securities Six [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.33%
Expiration date | 5/12/2016
United States [Member] | US Treasury Bill Securities Seven [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.31%
Expiration date | 5/19/2016
United States [Member] | US Treasury Bill Securities Eight [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.35%
Expiration date | 5/26/2016
United States [Member] | US Treasury Bill Securities Nine [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.43%
Expiration date | 6/2/2016
United States [Member] | US Treasury Bill Securities Ten [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.52%
Expiration date | 6/9/2016
United States [Member] | US Treasury Bill Securities Eleven [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.48%
Expiration date | 6/16/2016
United States [Member] | US Treasury Bill Securities Twelve [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.46%
Expiration date | 6/23/2016
United States [Member] | US Treasury Bill Securities Thirteen [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.45%
Expiration date | 6/30/2016
United States [Member] | US Treasury Bill Securities Fourteen [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.32%
Expiration date | 7/7/2016
United States [Member] | US Treasury Bill Securities Fifteen [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.32%
Expiration date | 7/14/2016
United States [Member] | US Treasury Bill Securities Sixteen [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.38%
Expiration date | 7/21/2016
United States [Member] | US Treasury Bill Securities Seventeen [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.43%
Expiration date | 7/28/2016
United States [Member] | US Treasury Bill Securities Eighteen [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.42%
Expiration date | 8/4/2016
United States [Member] | US Treasury Bill Securities Nineteen [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.41%
Expiration date | 8/11/2016
United States [Member] | US Treasury Bill Securities Twenty [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.43%
Expiration date | 8/18/2016
United States [Member] | US Treasury Bill Securities Twenty One [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.45%
Expiration date | 8/25/2016
United States [Member] | US Treasury Bill Securities Twenty Two [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.48%
Expiration date | 9/1/2016
United States [Member] | US Treasury Bill Securities Twenty Three [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.46%
Expiration date | 9/8/2016
United States [Member] | US Treasury Bill Securities Twenty Four [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.45%
Expiration date | 9/15/2016
United States [Member] | US Treasury Bill Securities Twenty Five [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.44%
Expiration date | 9/22/2016
United States [Member] | US Treasury Bill Securities Twenty Six [Member] | US Treasury Securities [Member] | Cash Equivalent [Member] |
Interest rate | 0.38%
Expiration date | 9/29/2016

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