XML 36 R21.htm IDEA: XBRL DOCUMENT
v3.25.1

CONTRACTS AND AGREEMENTS (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2025
CONTRACTS AND AGREEMENTS |
Schedule of brokerage and futures commissions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Three months ended |
​ |  | March 31, 2025 |  | March 31, 2024 |
Total commissions accrued to brokers | ​ | $ | 1,357 | ​ | $ | 3,282 | ​
Total commissions as annualized percentage of average total net assets | ​ |  | 0.03 | % |  | 0.08 | %

X
- Definition Tabular disclosure of fees earned by the broker commission. + References No definition available. + Details
Name: | unl_BrokerageCommissionsTableTextBlock
Namespace Prefix: | unl_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ContractorsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration