XML 30 R24.htm IDEA: XBRL DOCUMENT v2.4.0.8

CONTRACTS AND AGREEMENTS (Brokerage Commissions) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Floor Brokerage Exchange and Clearance Fees	$ 641	$ 1,398	$ 2,522	$ 6,810
Percentage Of Average Daily Net Assets	0.75%		0.75%
Rebalancing Investments Transaction [Member]
Floor Brokerage Exchange and Clearance Fees			1,150	3,433
Percentage Of Average Daily Net Assets	45.60%	50.41%	45.60%	50.41%
Creation And Redemption Activity [Member]
Floor Brokerage Exchange and Clearance Fees			$ 1,372	$ 3,377
Percentage Of Average Daily Net Assets	54.40%	49.59%	54.40%	49.59%

X

- Definition

Percentage of Average Daily Net Assets

+ References

No definition available.

+ Details

Name:	unl_PercentageOfAverageDailyNetAssets
Namespace Prefix:	unl_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The amount of expense during the period for floor brokerage fees paid to other broker-dealers to execute trades on their behalf, stock exchange fees, order flow fees, and clearance fees.

+ References

No definition available.

+ Details

Name:	us-gaap_FloorBrokerageExchangeAndClearanceFees
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration