XML 39 R24.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

ORGANIZATION AND BUSINESS (Details) |  |  |  | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 23, 2024 | Jan. 04, 2018 $ / shares shares | Apr. 18, 2007 USD ($) $ / shares shares | Apr. 30, 2007 shares | Mar. 31, 2024 USD ($) contract $ / shares shares | Dec. 31, 2023 $ / shares shares | Mar. 31, 2023 $ / shares | Dec. 31, 2022 $ / shares
ORGANIZATION AND BUSINESS |  |  |  |  |  |  |  |
Number of successive valuation days |  |  |  |  | 30 days |  |  |
Average daily percentage change in the price of the Benchmark Futures Contract considered |  |  |  |  | 10.00% |  |  |
Number of Contracts | contract |  |  |  |  | 41,428 |  |  |
Reverse share split | 0.25 |  |  |  |  |  |  |
Committee For Uniform Securities Identification Procedure Cusip |  | 912318300 |  |  |  |  |  |
Fee paid by authorized participants for each order placed to create one or more Creation Baskets or to redeem one or more baskets | $ |  |  |  |  | $ 1,000 |  |  |
Number of initially registered units on Form S-1 with the U.S. Securities and Exchange Commission |  |  |  | 30,000,000 |  |  |  |
Net asset value per unit | $ / shares |  |  | $ 50.00 |  | $ 14.74 | $ 20.36 | $ 28.05 | $ 56.90
Number of units issued |  |  | 200,000 |  |  |  |  |
Value of unit issued | $ |  |  | $ 10,001,000 |  |  |  |  |
Prior to Reverse Split |  |  |  |  |  |  |  |
ORGANIZATION AND BUSINESS |  |  |  |  |  |  |  |
Reverse share split |  | 0.25 |  |  |  |  |  |
Capital units issued |  | 97,466,476 |  |  |  | 191,284,588 |  |
Capital units outstanding |  | 97,466,476 |  |  |  | 191,284,588 |  |
Net asset value per unit | $ / shares |  | $ 5.69 |  |  |  | $ 5.09 |  |
Following Reverse Split |  |  |  |  |  |  |  |
ORGANIZATION AND BUSINESS |  |  |  |  |  |  |  |
Capital units issued |  | 24,366,619 |  |  |  | 47,821,147 |  |
Capital units outstanding |  | 24,366,619 |  |  |  | 47,821,147 |  |
Committee For Uniform Securities Identification Procedure Cusip | 912318409 |  |  |  |  |  |  |
Net asset value per unit | $ / shares |  | $ 22.76 |  |  |  | $ 20.36 |  |
Creation Baskets |  |  |  |  |  |  |  |
ORGANIZATION AND BUSINESS |  |  |  |  |  |  |  |
Number of units per basket |  |  |  |  | 100,000 |  |  |
Redemption Baskets |  |  |  |  |  |  |  |
ORGANIZATION AND BUSINESS |  |  |  |  |  |  |  |
Number of units per basket |  |  |  |  | 100,000 |  |  |

X
- Definition Average daily percentage change in the price of the Benchmark Futures Contract considered for determining the average daily percentage change in the fund's NAV for achieving the entity's investment objective. + References No definition available. + Details
Name: | ung_AverageDailyPercentageChangeInPriceOfBenchmarkFuturesContractConsidered
Namespace Prefix: | ung_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Capital Units, Issued + References No definition available. + Details
Name: | ung_CapitalUnitsIssued
Namespace Prefix: | ung_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Nine character alphanumeric identifier of an entity or issuer and the type of security. + References No definition available. + Details
Name: | ung_CommitteeForUniformSecuritiesIdentificationProcedureCusip
Namespace Prefix: | ung_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of fee paid per order. + References No definition available. + Details
Name: | ung_FeePaidPerOrder
Namespace Prefix: | ung_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Per unit of net asset value. + References No definition available. + Details
Name: | ung_NetAssetValuePerUnit
Namespace Prefix: | ung_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of successive valuation days over which the average daily percentage change in the fund's NAV will be considered for achieving the entity's investment objective, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | ung_NumberOfSuccessiveValuationDays
Namespace Prefix: | ung_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of units per Basket. + References No definition available. + Details
Name: | ung_NumberOfUnitsPerBasket
Namespace Prefix: | ung_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of initially registered shares. + References No definition available. + Details
Name: | ung_NumberOfUnitsRegisteredInPeriod
Namespace Prefix: | ung_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Organization, Consolidation and Presentation of Financial Statements Disclosure + References No definition available. + Details
Name: | ung_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems
Namespace Prefix: | ung_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares issued during the period. + References No definition available. + Details
Name: | ung_UnitsIssuedDuringPeriodUnitsNewIssues
Namespace Prefix: | ung_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount received from the issuance of new shares during the period. + References No definition available. + Details
Name: | ung_UnitsIssuedDuringPeriodValueNewIssues
Namespace Prefix: | ung_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of capital units or capital shares outstanding. This element is relevant to issuers of face-amount certificates and registered investment companies. + References No definition available. + Details
Name: | us-gaap_CapitalUnitsOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Balance held at close of period in number of contracts. + References No definition available. + Details
Name: | us-gaap_InvestmentOwnedBalanceContracts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-4 + Details
Name: | us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConversionOfStockByUniqueDescriptionAxis=ung_PriorToReverseSplitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConversionOfStockByUniqueDescriptionAxis=ung_FollowingReverseSplitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=ung_CreationBasketsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=ung_RedemptionBasketsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |