XML 40 R25.htm IDEA: XBRL DOCUMENT v3.10.0.1
CONTRACTS AND AGREEMENTS (Additional Information) (Details)
 9 Months Ended
Sep. 30, 2018
USD ($)
$ / Unit
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Annual Fee for custody, fund accounting and fund administration services $ 20,000
Maximum [Member]  
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Annual Fee for custody, fund accounting and fund administration services $ 75,000
Transaction fees per transaction | $ / Unit 15
Commissions per round-turn trade, including applicable exchange and NFA fees for Futures Contracts and options on Futures Contracts | $ / Unit 8
Minimum [Member]  
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Annual Fee for custody, fund accounting and fund administration services $ 75,000
Transaction fees per transaction | $ / Unit 7
Commissions per round-turn trade, including applicable exchange and NFA fees for Futures Contracts and options on Futures Contracts | $ / Unit 7
First $500 million of USNG's, USOF's, US12OF's, UGA's, USDHO's, USSO's, US12NG's, USBO's, USCI's, CPER's, USAG's and USMI's combined net assets [Member]  
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Fee percentage 0.06%
First $500 million of USNG's, USOF's, US12OF's, UGA's, USDHO's, USSO's, US12NG's, USBO's, USCI's, CPER's, USAG's and USMI's combined net assets [Member] | Maximum [Member]  
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Base amount for determining fee percentage $ 500,000,000
USNG's, USOF's, US12OF's, UGA's, USDHO's, USSO's, US12NG's, USBO's, USCI's, CPER's, USAG's and USMI's 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%
Base amount for determining fee percentage $ 1,000,000,000
USNG's, USOF's, US12OF's, UGA's, USDHO's, USSO's, US12NG's, USBO's, USCI's, CPER's, USAG's and USMI's 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 $ 500,000,000
USNG's, USOF's, US12OF's, UGA's, USDHO's, USSO's, US12NG's, USBO's, USCI's, CPER's, USAG's and USMI's combined net assets exceed $1 billion [Member]  
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Fee percentage 0.035%
USNG's, USOF's, US12OF's, UGA's, USDHO's, USSO's, US12NG's, USBO's, USCI's, CPER's, USAG's and USMI's combined net assets exceed $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
Marketing Agreement [Member]  
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Fee percentage 0.04%
Marketing Agreement [Member] | USNG's assets up to $3 billion [Member]  
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Fee percentage 0.06%
Base amount for determining fee percentage $ 3,000,000,000
Marketing Agreement [Member] | USNG's assets in excess of $3 billion [Member]  
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Fee percentage 10.00%
Marketing Agreement [Member] | USNG'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