Condensed Schedule of Investments (Parenthetical)	6 Months Ended
Jun. 30, 2016 USD ($)
Collateral Amount On Open Futures Contracts	$ 7,995,769
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.32%, 7/07/2016
Interest rate	0.32%
Expiration date	7/07/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.38%, 7/21/2016
Interest rate	0.38%
Expiration date	7/21/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.39%, 7/28/2016
Interest rate	0.39%
Expiration date	7/28/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.42%, 8/04/2016
Interest rate	0.42%
Expiration date	8/04/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.41%, 8/11/2016
Interest rate	0.41%
Expiration date	8/11/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.43%, 8/18/2016
Interest rate	0.43%
Expiration date	8/18/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.45%, 8/25/2016
Interest rate	0.45%
Expiration date	8/25/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.48%, 9/01/2016
Interest rate	0.48%
Expiration date	9/01/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.46%, 9/08/2016
Interest rate	0.46%
Expiration date	9/08/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.45%, 9/15/2016
Interest rate	0.45%
Expiration date	9/15/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.44%, 9/22/2016
Interest rate	0.44%
Expiration date	9/22/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.38%, 9/29/2016
Interest rate	0.38%
Expiration date	9/29/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.34%, 10/06/2016
Interest rate	0.34%
Expiration date	10/06/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.35%, 10/13/2016
Interest rate	0.35%
Expiration date	10/13/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.34%, 10/20/2016
Interest rate	0.34%
Expiration date	10/20/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.39%, 10/27/2016
Interest rate	0.39%
Expiration date	10/27/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.37%, 11/03/2016
Interest rate	0.37%
Expiration date	11/03/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.36%, 11/10/2016
Interest rate	0.36%
Expiration date	11/10/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.39%, 11/17/2016
Interest rate	0.39%
Expiration date	11/17/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.46%, 11/25/2016
Interest rate	0.46%
Expiration date	11/25/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.47%, 12/01/2016
Interest rate	0.47%
Expiration date	12/01/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.41%, 12/08/2016
Interest rate	0.41%
Expiration date	12/08/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.34%, 12/15/2016
Interest rate	0.34%
Expiration date	12/15/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.39%, 12/22/2016
Interest rate	0.39%
Expiration date	12/22/2016
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.34%, 12/29/2016
Interest rate	0.34%
Expiration date	12/29/2016
United States \| NYMEX WTI Crude Oil Futures CL February 2017 contracts, expiring January 2017 \| Open Futures Contracts, Long
Expiration date	January 2017
United States \| NYMEX WTI Crude Oil Futures CL March 2017 contracts, expiring February 2017 \| Open Futures Contracts, Long
Expiration date	February 2017
United States \| NYMEX WTI Crude Oil Futures CL April 2017 contracts, expiring March 2017 \| Open Futures Contracts, Long
Expiration date	March 2017
United States \| NYMEX WTI Crude Oil Futures CL May 2017 contracts, expiring April 2017 \| Open Futures Contracts, Long
Expiration date	April 2017
United States \| NYMEX WTI Crude Oil Futures CL June 2017 contracts, expiring May 2017 \| Open Futures Contracts, Long
Expiration date	May 2017
United States \| NYMEX WTI Crude Oil Futures CL July 2017 contracts, expiring June 2017 \| Open Futures Contracts, Long
Expiration date	June 2017
United States \| NYMEX WTI Crude Oil Futures CL August 2016 contracts, expiring July 2016 \| Open Futures Contracts, Long
Expiration date	July 2016
United States \| NYMEX WTI Crude Oil Futures CL September 2016 contracts, expiring August 2016 \| Open Futures Contracts, Long
Expiration date	August 2016
United States \| NYMEX WTI Crude Oil Futures CL October 2016 contracts, expiring September 2016 \| Open Futures Contracts, Long
Expiration date	September 2016
United States \| NYMEX WTI Crude Oil Futures CL November 2016 contracts, expiring October 2016 \| Open Futures Contracts, Long
Expiration date	October 2016
United States \| NYMEX WTI Crude Oil Futures CL December 2016 contracts, expiring November 2016 \| Open Futures Contracts, Long
Expiration date	November 2016
United States \| NYMEX WTI Crude Oil Futures CL January 2017 contracts, expiring December 2016 \| Open Futures Contracts, Long
Expiration date	December 2016