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v2.4.1.9

Statements of Financial Condition (USD $) | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Assets |  |
Cash and cash equivalents (Notes 2 and 5) | $ 36,408,502 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 25,257,312 us-gaap_CashAndCashEquivalentsAtCarryingValue
Equity in trading accounts: |  |
Cash and cash equivalents | 9,152,751 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue | 3,271,010 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue
Unrealized gain (loss) on open commodity futures contracts | (6,347,090)bno_UnrealizedGainLossOnOpenCommodityFuturesContracts | 28,670 bno_UnrealizedGainLossOnOpenCommodityFuturesContracts
Receivable for shares sold | 2,250,175 us-gaap_AccruedInvestmentIncomeReceivable | 0 us-gaap_AccruedInvestmentIncomeReceivable
Receivable from General Partner (Note 3) | 94,364 us-gaap_DueFromOfficersOrStockholders | 80,653 us-gaap_DueFromOfficersOrStockholders
Dividends receivable | 26 us-gaap_DividendsReceivable | 584 us-gaap_DividendsReceivable
ETF transaction fees receivable | 700 us-gaap_OtherReceivables | 350 us-gaap_OtherReceivables
Total assets | 41,559,428 us-gaap_Assets | 28,638,579 us-gaap_Assets
Liabilities and Partners' Capital |  |
Payable for shares redeemed | 0 us-gaap_TradingLiabilities | 2,190,654 us-gaap_TradingLiabilities
General Partner management fees payable (Note 3) | 22,178 us-gaap_DueToOfficersOrStockholdersCurrentAndNoncurrent | 18,110 us-gaap_DueToOfficersOrStockholdersCurrentAndNoncurrent
Professional fees payable | 115,836 us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent | 140,442 us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent
Brokerage commissions payable | 1,686 us-gaap_CommissionsPayableToBrokerDealersAndClearingOrganizations | 821 us-gaap_CommissionsPayableToBrokerDealersAndClearingOrganizations
Directors' fees and insurance payable | 338 us-gaap_ManagementFeePayable | 209 us-gaap_ManagementFeePayable
Total liabilities | 140,038 us-gaap_Liabilities | 2,350,236 us-gaap_Liabilities
Commitments and Contingencies (Notes 3, 4 and 5) |  |
Partners' Capital |  |
General Partner | 0 us-gaap_GeneralPartnersCapitalAccount | 0 us-gaap_GeneralPartnersCapitalAccount
Limited Partners | 41,419,390 us-gaap_LimitedPartnersCapitalAccount | 26,288,343 us-gaap_LimitedPartnersCapitalAccount
Total Partners' Capital | 41,419,390 us-gaap_PartnersCapital | 26,288,343 us-gaap_PartnersCapital
Total liabilities and partners' capital | $ 41,559,428 us-gaap_LiabilitiesAndStockholdersEquity | $ 28,638,579 us-gaap_LiabilitiesAndStockholdersEquity
Limited Partners' shares outstanding | 1,850,000 us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding | 600,000 us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
Net asset value per share | $ 22.39 bno_NetAssetValuePerUnit | $ 43.81 bno_NetAssetValuePerUnit
Market value per share | $ 22.70 bno_MarketValuePerUnit | $ 44.54 bno_MarketValuePerUnit

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