XML 21 R7.htm IDEA: XBRL DOCUMENT v3.23.1

Condensed Statements of Operations (Parenthetical)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Condensed Statements of Operations
Interest income	5.00%	5.00%

X

- Definition

The maximum percentage of paid in kind amount of interest income.

+ References

No definition available.

+ Details

Name:	unl_InterestIncomeMaximumPercentageOfPaidInKind
Namespace Prefix:	unl_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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