XML 33 R18.htm IDEA: XBRL DOCUMENT v3.10.0.1

CONTRACTS AND AGREEMENTS (Tables)

9 Months Ended

Sep. 30, 2018

Contractors [Abstract]

Brokerage Commissions

USL also incurs commissions to brokers for the purchase and sale of Oil Futures Contracts, Other Oil-Related Investments or short-term obligations of the United States of two years or less (“Treasuries”).

		For the nine months ended September 30, 2018				For the nine months ended September 30, 2017
Total commissions accrued to brokers		$	5,501			$	13,484
Total commissions as annualized percentage of average total net assets			0.01	%			0.02	%
Commissions accrued as a result of rebalancing		$	4,520			$	10,815
Percentage of commissions accrued as a result of rebalancing			82.17	%			80.21	%
Commissions accrued as a result of creation and redemption activity		$	981			$	2,669
Percentage of commissions accrued as a result of creation and redemption activity			17.83	%			19.79	%

X

- References

No definition available.

+ Details

Name:	us-gaap_ContractorsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of fees earned by the broker commission.

+ References

No definition available.

+ Details

Name:	usl_BrokerageCommissionsTableTextBlock
Namespace Prefix:	usl_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration