XML 29 R24.htm IDEA: XBRL DOCUMENT v2.4.0.8

CONTRACTS AND AGREEMENTS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Brokerage commissions	$ 6,641	$ 7,888	$ 10,750	$ 16,290
Rebalancing Investments Transaction [Member]
Brokerage commissions			9,683	13,930
Percentage Of Average Daily Net Assets	90.08%	85.51%	90.08%	85.51%
Creation And Redemption Activity [Member]
Brokerage commissions			$ 1,067	$ 2,360
Percentage Of Average Daily Net Assets	9.92%	14.49%	9.92%	14.49%

X

- Definition

Percentage Of Average Daily Net Assets

+ References

No definition available.

+ Details

Name:	bno_PercentageOfAverageDailyNetAssets
Namespace Prefix:	bno_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The amount of expense during the period for floor brokerage fees paid to other broker-dealers to execute trades on their behalf, stock exchange fees, order flow fees, and clearance fees.

+ References

No definition available.

+ Details

Name:	us-gaap_FloorBrokerageExchangeAndClearanceFees
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration