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v2.4.1.9

Statements of Cash Flows (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash Flows from Operating Activities: |  |  |
Net income (loss) | $ (26,451,869)us-gaap_NetIncomeLoss | $ 2,260,564 us-gaap_NetIncomeLoss | $ 4,409,324 us-gaap_NetIncomeLoss
Adjustments to reconcile net income (income) to net cash provided by (used in) operating activities: |  |  |
(Increase) decrease in commodity futures trading account - cash and cash equivalents | (5,881,741)us-gaap_IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities | 1,663,093 us-gaap_IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities | 3,366,714 us-gaap_IncreaseDecreaseInFinancialInstrumentsUsedInOperatingActivities
Unrealized (gain) loss on futures contracts | 6,375,760 us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts | 710,660 us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts | (1,655,900)us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts
(Increase) decrease in receivable from General Partner | (13,711)us-gaap_IncreaseDecreaseDueFromOfficersAndStockholders | (33,405)us-gaap_IncreaseDecreaseDueFromOfficersAndStockholders | 57,183 us-gaap_IncreaseDecreaseDueFromOfficersAndStockholders
(Increase) decrease in dividends receivable | 558 us-gaap_IncreaseDecreaseInDividendsReceivable | 452 us-gaap_IncreaseDecreaseInDividendsReceivable | (696)us-gaap_IncreaseDecreaseInDividendsReceivable
(Increase) decrease in interest receivable | 0 bno_IncreaseDecreaseInAcquiredInterestReceivable | 0 bno_IncreaseDecreaseInAcquiredInterestReceivable | 11 bno_IncreaseDecreaseInAcquiredInterestReceivable
(Increase) decrease in ETF transaction fees receivable | (350)us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables | (350)us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables | 0 us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables
Increase (decrease) in General Partner management fees payable | 4,068 bno_IncreaseDecreaseManagementFeesPayable | (10,163)bno_IncreaseDecreaseManagementFeesPayable | (5,637)bno_IncreaseDecreaseManagementFeesPayable
Increase (decrease) in professional fees payable | (24,606)bno_IncreaseDecreaseInProfessionalFeesPayable | 15,103 bno_IncreaseDecreaseInProfessionalFeesPayable | (21,183)bno_IncreaseDecreaseInProfessionalFeesPayable
Increase (decrease) in brokerage commissions payable | 865 us-gaap_IncreaseDecreaseInPayablesToBrokerDealers | (400)us-gaap_IncreaseDecreaseInPayablesToBrokerDealers | 305 us-gaap_IncreaseDecreaseInPayablesToBrokerDealers
Increase (decrease) in directors' fees and insurance payable | 129 us-gaap_IncreaseDecreaseInDueToOfficersAndStockholders | (73)us-gaap_IncreaseDecreaseInDueToOfficersAndStockholders | (717)us-gaap_IncreaseDecreaseInDueToOfficersAndStockholders
Net cash provided by (used in) operating activities | (25,990,897)us-gaap_NetCashProvidedByUsedInOperatingActivities | 4,605,481 us-gaap_NetCashProvidedByUsedInOperatingActivities | 6,149,404 us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash Flows from Financing Activities: |  |  |
Addition of partnership shares | 75,499,118 us-gaap_ProceedsFromPartnershipContribution | 118,483,039 us-gaap_ProceedsFromPartnershipContribution | 89,087,948 us-gaap_ProceedsFromPartnershipContribution
Redemption of partnership shares | (38,357,031)bno_PaymentsToPartnershipRedemption | (137,337,227)bno_PaymentsToPartnershipRedemption | (85,693,039)bno_PaymentsToPartnershipRedemption
Net cash provided by (used in) financing activities | 37,142,087 us-gaap_NetCashProvidedByUsedInFinancingActivities | (18,854,188)us-gaap_NetCashProvidedByUsedInFinancingActivities | 3,394,909 us-gaap_NetCashProvidedByUsedInFinancingActivities
Net Increase (Decrease) in Cash and Cash Equivalents | 11,151,190 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (14,248,707)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 9,544,313 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and Cash Equivalents, beginning of year | 25,257,312 us-gaap_CashAndCashEquivalentsAtCarryingValue | 39,506,019 us-gaap_CashAndCashEquivalentsAtCarryingValue | 29,961,706 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and Cash Equivalents, end of year | $ 36,408,502 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 25,257,312 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 39,506,019 us-gaap_CashAndCashEquivalentsAtCarryingValue

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