CONTRACTS AND AGREEMENTS (Additional Information) (Details) | 9 Months Ended |
Sep. 30, 2017USD ($) |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Custody Fees | $ 20,000 |
Annual Minimum Amount Applicability Description | 75,000 |
Maximum [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Transaction fees per transaction | 15 |
Commissions per round-turn trade, including applicable exchange and NFA fees for Oil Futures Contracts and options on Oil Futures Contracts | 8 |
Minimum [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Transaction fees per transaction | 7 |
Commissions per round-turn trade, including applicable exchange and NFA fees for Oil Futures Contracts and options on Oil Futures Contracts | 7 |
Custody Fees | $ 75,000 |
Related Public Funds [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Fee percentage | 0.06% |
Related Public Funds [Member] | Maximum [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Base amount for determining fee percentage | $ 500,000,000 |
Related Public Funds' combined net assets greater than $500 million but less than $1 billion [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Fee percentage | 0.0465% |
Related Public Funds' combined net assets greater than $500 million but less than $1 billion [Member] | Maximum [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Base amount for determining fee percentage | $ 1,000,000,000 |
Related Public Funds' combined net assets greater than $500 million but less than $1 billion [Member] | Minimum [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Base amount for determining fee percentage | $ 500,000,000 |
Related Public Funds' combined net assets exceed $1 billion [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Fee percentage | 0.035% |
Related Public Funds' combined net assets exceed $1 billion [Member] | Minimum [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Base amount for determining fee percentage | $ 1,000,000,000 |
Marketing Agreement [Member] | UHN's assets up to $3 billion [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Fee percentage | 0.06% |
Marketing Agreement [Member] | UHN's assets up to $3 billion [Member] | Maximum [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Base amount for determining fee percentage | $ 3,000,000,000 |
Marketing Agreement [Member] | UHN's assets in excess of $3 billion [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Fee percentage | 0.04% |
Marketing Agreement [Member] | UHN's assets in excess of $3 billion [Member] | Minimum [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Base amount for determining fee percentage | $ 3,000,000,000 |
Marketing Agent and Affliate of USCF [Member] | |
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items] | |
Maximum Aggregate Compensation Paid For Distribution Related Services Percentage | 10.00% |