XML 33 R19.htm IDEA: XBRL DOCUMENT
v3.22.1

CONTRACTS AND AGREEMENTS (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2022
CONTRACTS AND AGREEMENTS |
Schedule of brokerage commissions | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Three months ended | ​
​ |  | March 31, 2022 |  | March 31, 2021 |
Total commissions accrued to brokers | ​ | $ | 204,388 | ​ | $ | 257,862 | ​
Total commissions as annualized percentage of average total net assets |  | ​ | 0.23 | % | ​ | 0.30 | %
Commissions accrued as a result of rebalancing | ​ | $ | 152,554 | ​ | $ | 225,188 | ​
Percentage of commissions accrued as a result of rebalancing | ​ |  | 74.64 | % | ​ | 87.33 | %
Commissions accrued as a result of creation and redemption activity | ​ | $ | 51,834 | ​ | $ | 32,674 | ​
Percentage of commissions accrued as a result of creation and redemption activity | ​ |  | 25.36 | % |  | 12.67 | %

X
- Definition 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