2.2.0.7 true Sheet 00090 - Document - Document and Entity Information Document and Entity Information http://www.ishares.com/role/DocumentDocumentAndEntityInformation false R1.xml false Sheet 00100 - Statement - Balance Sheets Balance Sheets http://www.ishares.com/role/StatementBalanceSheets false R2.xml false Sheet 00110 - Statement - Balance Sheets (Parenthetical) Balance Sheets (Parenthetical) http://www.ishares.com/role/StatementBalanceSheetsParenthetical false R3.xml false Sheet 00200 - Statement - Income Statements Income Statements http://www.ishares.com/role/StatementIncomeStatements false R4.xml false Sheet 00300 - Statement - Statements of Changes in Shareholders' Equity (Deficit) Statements of Changes in Shareholders' Equity (Deficit) http://www.ishares.com/role/StatementStatementsOfChangesInShareholdersEquityDeficit false R5.xml false Sheet 00400 - Statement - Statements of Cash Flows Statements of Cash Flows http://www.ishares.com/role/StatementStatementsOfCashFlows false R6.xml false Sheet 10101 - Disclosure - Organization Organization http://www.ishares.com/role/DisclosureOrganization false R7.xml false Sheet 10201 - Disclosure - Summary of Significant Accounting Policies Summary of Significant Accounting Policies http://www.ishares.com/role/DisclosureSummaryOfSignificantAccountingPolicies false R8.xml false Sheet 10301 - Disclosure - Expenses Expenses http://www.ishares.com/role/DisclosureExpenses false R9.xml false Sheet 10401 - Disclosure - Related Parties Related Parties http://www.ishares.com/role/DisclosureRelatedParties false R10.xml false Sheet 10501 - Disclosure - Indemnification Indemnification http://www.ishares.com/role/Disclosure false R11.xml false Sheet 10601 - Disclosure - Concentration Risk Concentration Risk http://www.ishares.com/role/DisclosureConcentrationRisk false R12.xml false Sheet 10701 - Disclosure - Subsequent Events Subsequent Events http://www.ishares.com/role/DisclosureReviewForSubsequentEvents false R13.xml false Book All Reports All Reports false 1 8 0 0 3 50 false false Duration_1_1_2010_To_6_30_2010 36 Duration_1_1_2009_To_12_31_2009 3 Duration_4_1_2010_To_6_30_2010 11 As_Of_6_30_2009 1 Duration_1_1_2009_To_6_30_2009 18 As_Of_6_30_2010 14 As_Of_12_31_2009 11 Duration_4_1_2009_To_6_30_2009 12 true true