XML 39 R4.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Condensed Schedule of Investments (Parenthetical) (United States [Member]) | 3 Months Ended
--- | ---
Mar. 31, 2013
NYMEX WTI Crude Oil Futures CL May 2013 contracts, expiring April 2013 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | April 2013
NYMEX WTI Crude Oil Futures CL June 2013 contracts, expiring May 2013 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | May 2013
NYMEX WTI Crude Oil Futures CL July 2013 contracts, expiring June 2013 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | June 2013
NYMEX WTI Crude Oil Futures CL August 2013 contracts, expiring July 2013 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | July 2013
NYMEX WTI Crude Oil Futures CL September 2013 contracts, expiring August 2013 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | August 2013
NYMEX WTI Crude Oil Futures CL October 2013 contracts, expiring September 2013 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | September 2013
NYMEX WTI Crude Oil Futures CL November 2013 contracts, expiring October 2013 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | October 2013
NYMEX WTI Crude Oil Futures CL December 2013 contracts, expiring November 2013 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | November 2013
NYMEX WTI Crude Oil Futures CL January 2014 contracts, expiring December 2013 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | December 2013
NYMEX WTI Crude Oil Futures CL February 2014 contracts, expiring January 2014 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | January 2014
NYMEX WTI Crude Oil Futures CL March 2014 contracts, expiring February 2014 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | February 2014
NYMEX WTI Crude Oil Futures CL April 2014 contracts, expiring March 2014 [Member] | Open Cleared Swap and Futures Contracts [Member] | Open Futures Contracts, Long [Member] |
Expiration date | March 2014
U.S. Treasury Bill [Member] | US Treasury Securities [Member] | Cash Equivalents [Member] |
Interest rate | 0.08%
Expiration date | 5/30/2013

X
- Definition Interest rate stated in the contractual debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The list of dates or date range within which the options may be exercised of the investment subject to option. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 13 -Paragraph 5 -Subparagraph d -Article 12 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 210.12-14.4(b)) -URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611322-123010 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Paragraph 4 -Subparagraph b -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 5 -Subparagraph (SX 210.12-13.5(d)) -URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611282-123010 + Details
Name: | us-gaap_InvestmentOwnedSubjectToOptionExerciseDates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration