XML 43 R26.htm IDEA: XBRL DOCUMENT
v3.25.0.1

CONTRACTS AND AGREEMENTS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
CONTRACTS AND AGREEMENTS |
Summary of brokerage commissions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year ended | ​ | Year ended | ​ | Year ended | ​
​ |  | December 31, 2024 |  | December 31, 2023 |  | December 31, 2022 | ​
Total commissions accrued to brokers | ​ | $ | 2,556,712 | ​ | $ | 2,696,598 | ​ | $ | 702,686 | ​
Total commissions as annualized percentage of average total net assets |  | ​ | 0.31 | % | ​ | 0.26 | % | ​ | 0.15 | %

X
- Definition Tabular disclosure of brokerage commissions. + References No definition available. + Details
Name: | ung_BrokerageCommissionsTableTextBlock
Namespace Prefix: | ung_
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