XML 36 R22.htm IDEA: XBRL DOCUMENT
v3.23.2

FINANCIAL HIGHLIGHTS (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2023
FINANCIAL HIGHLIGHTS |
Summary of per share performance data and other supplemental financial data | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three months ended |  | Three months ended | ​ |  | Six months ended |  | Six months ended |
​ | ​ | June 30, 2023 |  | June 30, 2022 |  | ​ | June 30, 2023 | ​ | June 30, 2022 | ​
​ | ​ | (Unaudited) | ​ | (Unaudited) | ​ | ​ | (Unaudited) | ​ | (Unaudited) | ​
Per Share Operating Performance: |  | ​ |  | ​ | ​ |  | ​ |  | ​ |  |  | ​ |  |
Net asset value, beginning of period | ​ | $ | 7.01 | ​ | $ | 19.69 | ​ | ​ | $ | 14.22 | ​ | $ | 12.39 | ​
Total income (loss) | ​ |  | 0.47 | ​ |  | (1.18) | ​ | ​ |  | (6.72) | ​ |  | 6.16 | ​
Total expenses | ​ |  | (0.02) | ​ |  | (0.06) | ​ | ​ |  | (0.04) | ​ |  | (0.10) | ​
Net increase (decrease) in net asset value | ​ |  | 0.45 | ​ |  | (1.24) | ​ | ​ |  | (6.76) | ​ |  | 6.06 | ​
Net asset value, end of period | ​ | $ | 7.46 | ​ | $ | 18.45 | ​ | ​ | $ | 7.46 | ​ | $ | 18.45 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Return | ​ |  | 6.42 | % |  | (6.30) | % | ​ |  | (47.54) | % |  | 48.91 | %
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ratios to Average Net Assets | ​ |  |  | ​ |  |  | ​ | ​ |  |  | ​ |  |  | ​
Total income (loss) | ​ |  | 9.90 | % |  | (10.84) | % | ​ |  | (32.62) | % |  | 37.08 | %
Management fees# | ​ |  | 0.60 | % |  | 0.60 | % | ​ |  | 0.60 | % |  | 0.60 | %
Total expenses excluding management fees# | ​ |  | 0.41 | % |  | 0.41 | % | ​ |  | 0.47 | % |  | 0.41 | %
Net income (loss) | ​ |  | 9.65 | % |  | (11.09) | % | ​ |  | (33.15) | % |  | 36.58 | %
# Annualized.

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

X
- Definition Tabular disclosure of per unit performance data and other supplemental financial data. + References No definition available. + Details
Name: | ung_PerUnitPerformanceDataAndOtherSupplementalFinancialDataTableTextBlock
Namespace Prefix: | ung_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration