XML 29 R24.htm IDEA: XBRL DOCUMENT v2.4.0.8

CONTRACTS AND AGREEMENTS (Brokerage Commissions) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Floor Brokerage Exchange and Clearance Fees	$ (189)	$ 2,124	$ 1,881	$ 5,412
Percentage Of Average Daily Net Assets	0.75%		0.75%
Rebalancing Investments Transaction [Member]
Floor Brokerage Exchange and Clearance Fees			509	2,264
Percentage Of Average Daily Net Assets	27.06%	41.83%	27.06%	41.83%
Creation And Redemption Activity [Member]
Floor Brokerage Exchange and Clearance Fees			$ 1,372	$ 3,148
Percentage Of Average Daily Net Assets	72.94%	58.17%	72.94%	58.17%

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