XML 42 R27.htm IDEA: XBRL DOCUMENT
v3.22.4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) |  | 12 Months Ended
--- | --- | ---
Jan. 04, 2018 | Dec. 31, 2022 USD ($) shares
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |
Amount of interest expense or penalties recognized | $ |  | $ 0
Number of units per basket | shares |  | 100,000
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
Reverse share split | 0.25 |
Redemption Baskets |  |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |
Number of units per basket | shares |  | 100,000

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 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 Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | ung_SignificantAccountingPoliciesLineItems
Namespace Prefix: | ung_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Ratio of applied to the conversion of reverse stock split, for example but not limited to, one share converted to two or two shares converted to one. + References No definition available. + Details
Name: | ung_StockholdersEquityNoteStockSplitReverseConversionRatio
Namespace Prefix: | ung_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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