ORGANIZATION AND BUSINESS	6 Months Ended
Jun. 30, 2012
Organization, Consolidation and Presentation Of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]	NOTE 1 – ORGANIZATION AND BUSINESS The United States Brent Oil Fund, LP (“USBO”) was organized as a limited partnership under the laws of the state of Delaware on September 2, 2009. USBO is a commodity pool that issues limited partnership units (“units”) that may be purchased and sold on the NYSE Arca, Inc. (the “NYSE Arca”). USBO will continue in perpetuity, unless terminated sooner upon the occurrence of one or more events as described in its Second Amended and Restated Agreement of Limited Partnership dated as of May 4, 2010 (the “LP Agreement”). The investment objective of USBO is for the daily changes in percentage terms of its units’ per unit net asset value (“NAV”) to reflect the daily changes in percentage terms of the spot price of Brent crude oil as measured by the daily changes in the price of the futures contract for Brent crude oil traded on the ICE Futures Exchange (the “ICE Futures”) that is the near month contract to expire, except when the near month contract is within two weeks of expiration, in which case the futures contract will be the next month contract to expire (the “Benchmark Futures Contract”), less USBO’s expenses. It is not the intent of USBO to be operated in a fashion such that the per unit NAV will equal, in dollar terms, the spot price of Brent crude oil or any particular futures contract based on Brent crude oil. It is not the intent of USBO to be operated in a fashion such that its per unit NAV will reflect the percentage change of the price of any particular futures contract as measured over a time period greater than one day. United States Commodity Funds LLC (“USCF”), the general partner of USBO, believes that it is not practical to manage the portfolio to achieve such an investment goal when investing in Futures Contracts (as defined below) and Other Crude Oil-Related Investments (as defined below). USBO accomplishes its objective through investments in futures contracts for crude oil, heating oil, gasoline, natural gas and other petroleum-based fuels that are traded on the ICE Futures, the New York Mercantile Exchange (the “NYMEX”), or other U.S. and foreign exchanges (collectively, “Futures Contracts”), and other crude oil-related investments such as cash-settled options on Futures Contracts, forward contracts for crude oil, cleared swap contracts and over-the-counter transactions that are based on the price of crude oil and other petroleum-based fuels, Futures Contracts and indices based on the foregoing (collectively, “Other Crude Oil-Related Investments”). As of June 30, 2012, USBO held 461 Futures Contracts for Brent crude oil traded on the ICE Futures. USBO commenced investment operations on June 2, 2010 and has a fiscal year ending on December 31. USCF is responsible for the management of USBO. USCF is a member of the National Futures Association (the “NFA”) and became a commodity pool operator registered with the Commodity Futures Trading Commission (the “CFTC”) effective December 1, 2005. USCF is also the general partner of the United States Oil Fund, LP (“USOF”), the United States Natural Gas Fund, LP (“USNG”), the United States 12 Month Oil Fund, LP (“US12OF”), the United States Gasoline Fund, LP (“UGA”) and the United States Diesel-Heating Oil Fund, LP (formerly, the United States Heating Oil Fund, LP) (“USDHO”), which listed their limited partnership units on the American Stock Exchange (the “AMEX”) under the ticker symbols “USO” on April 10, 2006, “UNG” on April 18, 2007, “USL” on December 6, 2007, “UGA” on February 26, 2008 and “UHN” on April 9, 2008, respectively. As a result of the acquisition of the AMEX by NYSE Euronext, each of USOF’s, USNG’s, US12OF’s, UGA’s and USDHO’s units commenced trading on the NYSE Arca on November 25, 2008. USCF is also the general partner of the United States Short Oil Fund, LP (“USSO”) and the United States 12 Month Natural Gas Fund, LP (“US12NG”), which listed their limited partnership units on the NYSE Arca under the ticker symbols “DNO” on September 24, 2009 and “UNL” on November 18, 2009, respectively. USCF is also the sponsor of the United States Commodity Index Fund (“USCI”), the United States Copper Index Fund (“CPER”), the United States Agriculture Index Fund (“USAG”) and the United States Metals Index Fund (“USMI”), each a series of the United States Commodity Index Funds Trust. USCI, CPER, USAG and USMI listed their units on the NYSE Arca under the ticker symbol “USCI” on August 10, 2010, “CPER” on November 15, 2011, “USAG” on April 13, 2012 and USMI on June 19, 2012, respectively. All funds listed previously are referred to collectively herein as the “Related Public Funds.” USCF has also filed registration statements to register units of the United States Sugar Fund (“USSF”), the United States Natural Gas Double Inverse Fund (“UNGD”), the United States Gasoil Fund (“USGO”) and the United States Asian Commodities Basket Fund (“UAC”), each a series of the United States Commodity Funds Trust I, and the US Golden Currency Fund (“USGCF”), a series of the United States Currency Funds Trust. Effective February 29, 2012, USBO issues units to certain authorized purchasers (“Authorized Purchasers”) by offering baskets consisting of 50,000 units (“Creation Baskets”) through ALPS Distributors, Inc., as the marketing agent (the “Marketing Agent”). Prior to February 29, 2012, USBO issued units to Authorized Purchasers by offering baskets consisting of 100,000 units through the Marketing Agent. The purchase price for a Creation Basket is based upon the NAV of a unit calculated shortly after the close of the core trading session on the NYSE Arca on the day the order to create the basket is properly received. From July 1, 2011 through December 31, 2012, the applicable transaction fee paid by Authorized Purchasers is $350 to USBO for each order they place to create or redeem one or more baskets (“Redemption Baskets”); prior to July 1, 2011, this fee was $1,000. Units may be purchased or sold on a nationally recognized securities exchange in smaller increments than a Creation Basket or Redemption Basket. Units purchased or sold on a nationally recognized securities exchange are not purchased or sold at the per unit NAV of USBO but rather at market prices quoted on such exchange. In May 2010, USBO initially registered 50,000,000 units on Form S-1 with the U.S. Securities and Exchange Commission (the “SEC”). On June 2, 2010, USBO listed its units on the NYSE Arca under the ticker symbol “BNO.” USBO established its initial per unit NAV by setting the price at $50.00 and issued 200,000 units in exchange for $10,000,000. USBO also commenced investment operations on June 2, 2010, by purchasing Futures Contracts traded on the ICE Futures based on Brent crude oil. As of June 30, 2012, USBO had registered a total of 50,000,000 units. The accompanying unaudited condensed financial statements have been prepared in accordance with Rule 10-01 of Regulation S-X promulgated by the SEC and, therefore, do not include all information and footnote disclosure required under generally accepted accounting principles (“GAAP”) in the United States of America. The financial information included herein is unaudited; however, such financial information reflects all adjustments, consisting only of normal recurring adjustments, which are, in the opinion of USCF, necessary for the fair presentation of the condensed financial statements for the interim period.

NOTE 1 – ORGANIZATION AND BUSINESS

The United States Brent Oil Fund, LP (“USBO”) was organized as a limited partnership under the laws of the state of Delaware on September 2, 2009. USBO is a commodity pool that issues limited partnership units (“units”) that may be purchased and sold on the NYSE Arca, Inc. (the “NYSE Arca”). USBO will continue in perpetuity, unless terminated sooner upon the occurrence of one or more events as described in its Second Amended and Restated Agreement of Limited Partnership dated as of May 4, 2010 (the “LP Agreement”). The investment objective of USBO is for the daily changes in percentage terms of its units’ per unit net asset value (“NAV”) to reflect the daily changes in percentage terms of the spot price of Brent crude oil as measured by the daily changes in the price of the futures contract for Brent crude oil traded on the ICE Futures Exchange (the “ICE Futures”) that is the near month contract to expire, except when the near month contract is within two weeks of expiration, in which case the futures contract will be the next month contract to expire (the “Benchmark Futures Contract”), less USBO’s expenses. It is not the intent of USBO to be operated in a fashion such that the per unit NAV will equal, in dollar terms, the spot price of Brent crude oil or any particular futures contract based on Brent crude oil. It is not the intent of USBO to be operated in a fashion such that its per unit NAV will reflect the percentage change of the price of any particular futures contract as measured over a time period greater than one day. United States Commodity Funds LLC (“USCF”), the general partner of USBO, believes that it is not practical to manage the portfolio to achieve such an investment goal when investing in Futures Contracts (as defined below) and Other Crude Oil-Related Investments (as defined below). USBO accomplishes its objective through investments in futures contracts for crude oil, heating oil, gasoline, natural gas and other petroleum-based fuels that are traded on the ICE Futures, the New York Mercantile Exchange (the “NYMEX”), or other U.S. and foreign exchanges (collectively, “Futures Contracts”), and other crude oil-related investments such as cash-settled options on Futures Contracts, forward contracts for crude oil, cleared swap contracts and over-the-counter transactions that are based on the price of crude oil and other petroleum-based fuels, Futures Contracts and indices based on the foregoing (collectively, “Other Crude Oil-Related Investments”). As of June 30, 2012, USBO held 461 Futures Contracts for Brent crude oil traded on the ICE Futures.

USBO commenced investment operations on June 2, 2010 and has a fiscal year ending on December 31. USCF is responsible for the management of USBO. USCF is a member of the National Futures Association (the “NFA”) and became a commodity pool operator registered with the Commodity Futures Trading Commission (the “CFTC”) effective December 1, 2005. USCF is also the general partner of the United States Oil Fund, LP (“USOF”), the United States Natural Gas Fund, LP (“USNG”), the United States 12 Month Oil Fund, LP (“US12OF”), the United States Gasoline Fund, LP (“UGA”) and the United States Diesel-Heating Oil Fund, LP (formerly, the United States Heating Oil Fund, LP) (“USDHO”), which listed their limited partnership units on the American Stock Exchange (the “AMEX”) under the ticker symbols “USO” on April 10, 2006, “UNG” on April 18, 2007, “USL” on December 6, 2007, “UGA” on February 26, 2008 and “UHN” on April 9, 2008, respectively. As a result of the acquisition of the AMEX by NYSE Euronext, each of USOF’s, USNG’s, US12OF’s, UGA’s and USDHO’s units commenced trading on the NYSE Arca on November 25, 2008. USCF is also the general partner of the United States Short Oil Fund, LP (“USSO”) and the United States 12 Month Natural Gas Fund, LP (“US12NG”), which listed their limited partnership units on the NYSE Arca under the ticker symbols “DNO” on September 24, 2009 and “UNL” on November 18, 2009, respectively. USCF is also the sponsor of the United States Commodity Index Fund (“USCI”), the United States Copper Index Fund (“CPER”), the United States Agriculture Index Fund (“USAG”) and the United States Metals Index Fund (“USMI”), each a series of the United States Commodity Index Funds Trust. USCI, CPER, USAG and USMI listed their units on the NYSE Arca under the ticker symbol “USCI” on August 10, 2010, “CPER” on November 15, 2011, “USAG” on April 13, 2012 and USMI on June 19, 2012, respectively. All funds listed previously are referred to collectively herein as the “Related Public Funds.” USCF has also filed registration statements to register units of the United States Sugar Fund (“USSF”), the United States Natural Gas Double Inverse Fund (“UNGD”), the United States Gasoil Fund (“USGO”) and the United States Asian Commodities Basket Fund (“UAC”), each a series of the United States Commodity Funds Trust I, and the US Golden Currency Fund (“USGCF”), a series of the United States Currency Funds Trust.

Effective February 29, 2012, USBO issues units to certain authorized purchasers (“Authorized Purchasers”) by offering baskets consisting of 50,000 units (“Creation Baskets”) through ALPS Distributors, Inc., as the marketing agent (the “Marketing Agent”). Prior to February 29, 2012, USBO issued units to Authorized Purchasers by offering baskets consisting of 100,000 units through the Marketing Agent. The purchase price for a Creation Basket is based upon the NAV of a unit calculated shortly after the close of the core trading session on the NYSE Arca on the day the order to create the basket is properly received.

From July 1, 2011 through December 31, 2012, the applicable transaction fee paid by Authorized Purchasers is $350 to USBO for each order they place to create or redeem one or more baskets (“Redemption Baskets”); prior to July 1, 2011, this fee was $1,000. Units may be purchased or sold on a nationally recognized securities exchange in smaller increments than a Creation Basket or Redemption Basket. Units purchased or sold on a nationally recognized securities exchange are not purchased or sold at the per unit NAV of USBO but rather at market prices quoted on such exchange.

In May 2010, USBO initially registered 50,000,000 units on Form S-1 with the U.S. Securities and Exchange Commission (the “SEC”). On June 2, 2010, USBO listed its units on the NYSE Arca under the ticker symbol “BNO.” USBO established its initial per unit NAV by setting the price at $50.00 and issued 200,000 units in exchange for $10,000,000. USBO also commenced investment operations on June 2, 2010, by purchasing Futures Contracts traded on the ICE Futures based on Brent crude oil. As of June 30, 2012, USBO had registered a total of 50,000,000 units.

The accompanying unaudited condensed financial statements have been prepared in accordance with Rule 10-01 of Regulation S-X promulgated by the SEC and, therefore, do not include all information and footnote disclosure required under generally accepted accounting principles (“GAAP”) in the United States of America. The financial information included herein is unaudited; however, such financial information reflects all adjustments, consisting only of normal recurring adjustments, which are, in the opinion of USCF, necessary for the fair presentation of the condensed financial statements for the interim period.