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

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) | 3 Months Ended
--- | ---
Mar. 31, 2024 USD ($) shares
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Income tax interest expense or penalties | $ 0
Creation Baskets |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Number of shares per basket | shares | 50,000
Fee paid by authorized purchasers for each order they place to create one or more creation baskets or to redeem one or more baskets | $ 350

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 -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15 + Details
Name: | us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fee Paid Per Order + References No definition available. + Details
Name: | usl_FeePaidPerOrder
Namespace Prefix: | usl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of shares per basket. + References No definition available. + Details
Name: | usl_NumberOfUnitsPerBasket
Namespace Prefix: | usl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Significant Accounting Policies. + References No definition available. + Details
Name: | usl_SignificantAccountingPoliciesLineItems
Namespace Prefix: | usl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | usl_InvestmentSecondaryCategorization1Axis=usl_CreationBasketsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |