Condensed Schedule of Investments (Parenthetical)	9 Months Ended
Sep. 30, 2016 USD ($)
Collateral Amount On Open Futures Contracts	$ 7,994,581
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
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.34%, 1/05/2017
Interest rate	0.34%
Expiration date	1/05/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.43%, 1/19/2017
Interest rate	0.43%
Expiration date	1/19/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.36%, 1/26/2017
Interest rate	0.36%
Expiration date	1/26/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.40%, 2/02/2017
Interest rate	0.40%
Expiration date	2/02/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.42%, 2/09/2017
Interest rate	0.42%
Expiration date	2/09/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.45%, 2/16/2017
Interest rate	0.45%
Expiration date	2/16/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.45%, 2/23/2017
Interest rate	0.45%
Expiration date	2/23/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.45%, 3/02/2017
Interest rate	0.45%
Expiration date	3/02/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.47%, 3/09/2017
Interest rate	0.47%
Expiration date	3/09/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.50%, 3/16/2017
Interest rate	0.50%
Expiration date	3/16/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.45%, 3/23/2017
Interest rate	0.45%
Expiration date	3/23/2017
US Treasury Securities \| Cash Equivalents \| U.S.Treasury Bills 0.40%, 3/30/2017
Interest rate	0.43%
Expiration date	3/30/2017