Organization (Details) - USD ($)	1 Months Ended	12 Months Ended
	Dec. 22, 2017	Dec. 31, 2019
Organization (Textual)
Capital contribution by sponsor	$ 1,000
Sale of shares, description		The Fund will issue and redeem Shares on a continuous basis, through SEI Investments Distribution Co. (the "Distributor"), at net asset value ("NAV") per Share only in one or more large blocks of 50,000 Shares, called "Baskets". Baskets may be issued and redeemed for cash but are expected to be issued and redeemed principally through exchange for related positions ("EFRP") transactions for (i) futures contracts, Treasury securities and other financial instruments designed to track such Fund's underlying index ("Deposit Instruments") and (ii) a cash amount that includes a variable charge. Creation and redemption prices of Baskets are directly linked to a Fund's next computed NAV and will vary from NAV by a market-determined trading cost, which may be zero.