XML 45 R21.htm IDEA: XBRL DOCUMENT
v2.4.0.8

ORGANIZATION AND BUSINESS (Details Textual) (USD $) | 1 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 02, 2010 | Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2013 | Dec. 31, 2012 | May 31, 2010
Units Issued During Period To Authorized Purchasers Through Distributors |  | 50,000 |  |  |  |  |  |
Transaction Fee |  | $ 350 |  |  |  |  |  |
Initially Registered Units Of Entity With Sec |  |  |  |  |  |  |  | 50,000,000
Net asset value per unit | $ 50.00 | $ 45.35 | $ 43.81 | $ 38.88 | [1] | $ 40.98 | [1] |
Initial stock units issued | 200,000 | 450,000 |  |  |  |  |  |
Initial Stock Units Outstanding |  | 450,000 |  |  |  |  |  |
Initial Units Value, Issued | $ 10,000,000 |  |  |  |  |  |  |
Total Units Registered Of Entity |  | 50,000,000 |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |
Net asset value per unit |  | $ 89.92 |  |  |  |  |  |
Initial stock units issued |  | 900,000 |  |  |  |  |  |
Initial Stock Units Outstanding |  | 900,000 |  |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |
Net asset value per unit |  | $ 44.96 |  |  |  |  |  |
Open Futures Contracts - Long [Member] | United States [Member] | ICE Brent Crude Oil Futures CO August 2014 contracts, expiring July 2014 [Member] |  |  |  |  |  |  |  |
Number of Contracts |  | 484 |  |  |  |  |  |
[1] | On August 26, 2013, BNO executed a 2-for-1 forward share split for all shareholders of record as of the close of markets on August 26, 2013. The 2-for-1 forward share split was payable after the close of markets on August 28, 2013. BNO began trading at its post split price on August 29, 2013. The Financial Highlights (Unaudited) have been adjusted for the periods shown to reflect the 2-for-1 forward share split on a retroactive basis.

X
- Definition Initially Registered Units of Entity With SEC based on during period. + References No definition available. + Details
Name: | bno_InitiallyRegisteredUnitsOfEntityWithSec
Namespace Prefix: | bno_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total number of initial units of an entity that have been issued so reported as of the period. + References No definition available. + Details
Name: | bno_InitialStockUnitsIssued
Namespace Prefix: | bno_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total number of initial units of an entity that have been outstanding so reported as of the period. + References No definition available. + Details
Name: | bno_InitialStockUnitsOutstanding
Namespace Prefix: | bno_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the initial value issued during the period. + References No definition available. + Details
Name: | bno_InitialUnitsValueIssued
Namespace Prefix: | bno_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net asset value per unit. + References No definition available. + Details
Name: | bno_NetAssetValuePerUnit
Namespace Prefix: | bno_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The total units of the entity registered under the Securities and Exchange commission reported as of the period. + References No definition available. + Details
Name: | bno_TotalUnitsRegisteredOfEntity
Namespace Prefix: | bno_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition A description of what the Transaction fee during the period. + References No definition available. + Details
Name: | bno_TransactionFee
Namespace Prefix: | bno_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Units issuers during period to authorized purchasers of face-amount certificates and registered investment companies. + References No definition available. + Details
Name: | bno_UnitsIssuedDuringPeriodToAuthorizedPurchasersThroughDistributors
Namespace Prefix: | bno_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Balance held at close of period in number of contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C.Column B) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611225-123010 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14.Column B) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611322-123010 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12.Column B) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611133-123010 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Paragraph Column B -Article 12 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column B -Article 12 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Paragraph Column B -Article 12 + Details
Name: | us-gaap_InvestmentOwnedBalanceContracts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant