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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2022
Feb. 22, 2023
Jun. 30, 2022
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2022    
Entity File Number 001-34704    
Entity Registrant Name United States Brent Oil Fund, LP    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 27-0925904    
Entity Address, Address Line One Delaware    
Entity Address, Address Line Two Suite 640    
Entity Address, City or Town Walnut Creek    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94596    
City Area Code 510    
Local Phone Number 522-9600    
Title of 12(b) Security Shares of United States Brent Oil Fund, LP    
Trading Symbol BNO    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   9,050,000  
Entity Public Float     $ 269,572,924
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001472494    
Amendment Flag false    
ICFR Auditor Attestation Flag true    
Auditor Name Spicer Jeffries LLP    
Auditor Firm ID 349    
Auditor Location Denver, Colorado