2.2.0.25truefalse040000 - Disclosure - Risk/Return Detail Data {Elements}truetruefalse1falsefalsefalsefalse3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011http://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:002true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:3false0dei_DocumentTypedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00OtherfalsefalsefalsefalsefalseOtherus-types:SECReportItemTypenaThe type of document being provided (such as 10-K, 10-Q, N-1A, etc). The document type should be limited to the same value as the supporting SEC submission type. The acceptable values are as follows: S-1, S-3, S-4, S-11, F-1, F-3, F-4, F-9, F-10, 6-K, 8-K, 10, 10-K, 10-Q, 20-F, 40-F, N-1A, 485BPOS, NCSR, N-Q, and Other.No authoritative reference available.falsefalseDocument Type4false0dei_DocumentPeriodEndDatedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002011-03-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements this will be the filing date. The format of the date is CCYY-MM-DD.No authoritative reference available.falsefalseDocument Period End Date5false0dei_EntityRegistrantNamedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00BLACKROCK BOND FUND, INC.falsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringThe exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 falsefalseRegistrant Name6false0dei_EntityCentralIndexKeydeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse000000276463falsefalsefalsefalsefalseOtherus-types:centralIndexKeyItemTypenaA unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 falsefalseCentral Index Key7false0dei_AmendmentFlagdeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalsefalseOtherxbrli:booleanItemTypenaIf the value is true, then the document as an amendment to previously-filed/accepted document.No authoritative reference available.falsefalseAmendment Flag8false0dei_DocumentCreationDatedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002011-03-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe date the document was made available and submitted, in CCYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different.No authoritative reference available.falsefalseDocument Creation Date9false0dei_DocumentEffectiveDatedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002011-04-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe date when a document, upon receipt and acceptance, becomes officially effective, in CCYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases.No authoritative reference available.falsefalseDocument Effective Date10false0rr_ProspectusDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002011-03-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe date of the prospectus.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 1 -Paragraph 3 -Subsection a falsefalseProspectus Date11false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> <table border="0" cellspacing="0" cellpadding="0" width="100%"> <tr valign="top"><td width="50%" align="center">BlackRock Bond Fund, Inc. BlackRock High Income Fund BlackRock EuroFund BlackRock FundsSM BlackRock All-Cap Energy & Resources Portfolio BlackRock Energy & Resources Portfolio BlackRock Global Opportunities Portfolio BlackRock Health Sciences Opportunities Portfolio BlackRock International Opportunities Portfolio BlackRock Science & Technology Opportunities Portfolio BlackRock Small Cap Core Equity Portfolio BlackRock Small Cap Growth Equity Portfolio BlackRock Small/Mid-Cap Growth Portfolio BlackRock U.S. Opportunities Portfolio BlackRock World Gold Fund BlackRock Funds II BlackRock Emerging Market Debt Portfolio BlackRock High Yield Bond Portfolio BlackRock International Bond Portfolio BlackRock Strategic Income Opportunities Portfolio BlackRock Global Allocation Fund, Inc. </td> <td width="50%" align="center">BlackRock Global Dynamic Equity Fund BlackRock Global Emerging Markets Fund, Inc. BlackRock Global Financial Services Fund, Inc. BlackRock Global Growth Fund, Inc. BlackRock Global SmallCap Fund, Inc. BlackRock Index Funds, Inc. BlackRock International Index Fund BlackRock Small Cap Index Fund BlackRock International Value Trust BlackRock International Value Fund BlackRock Latin America Fund, Inc. BlackRock Pacific Fund, Inc. BlackRock Series, Inc. BlackRock International Fund BlackRock Small Cap Growth Fund II BlackRock Value Opportunities Fund, Inc. BlackRock World Income Fund, Inc. FDP Series, Inc. MFS Research International FDP Fund </td></tr></table> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged. </li> <li> The Shares at a Glance chart in the section of each Fund's prospectus entitled "Account Information—How to Choose the Share Class that Best Suits Your Needs" is hereby amended to state that no redemption fee is charged by any Fund on any share class. </li> <li> The fifth paragraph in the section "Account Information—Short-Term Trading Policy" in each Fund's prospectus is deleted in its entirety. </li> <li> The section in each Fund's prospectus entitled "Account Information—Redemption Fee" is deleted in its entirety.</li></ul> Effective April 1, 2011, each Fund's Statement of Additional Information is amended as set forth below. The sub-section "Redemption Fee" in the section entitled "Purchase of Shares" is deleted in its entirety. Shareholders should retain this Supplement for future reference. Code #ALLPRSAI-FEE-0211SUP </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]12false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000001869 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000001869Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock All-Cap Energy & Resources Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000001869Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | BlackRock All-Cap Energy & Resources Portfolio13true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:14false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]15false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse3falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000001875 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000001875Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Energy & Resources Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000001875Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | BlackRock Energy & Resources Portfolio16true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:17false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]18false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse4falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000008399 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000008399Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Global Opportunities Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000008399Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | BlackRock Global Opportunities Portfolio19true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:20false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]21false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse5falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000001877 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000001877Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Health Sciences Opportunities Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000001877Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | BlackRock Health Sciences Opportunities Portfolio22true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:23false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]24false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse6falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000001511 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000001511Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseInternational Opportunities Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000001511Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | International Opportunities Portfolio25true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:26false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]27false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse7falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000001510 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000001510Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Science & Technology Opportunities Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000001510Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | BlackRock Science & Technology Opportunities Portfolio28true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:29false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]30false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse8falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000001508 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000001508Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Small Cap Core Equitydei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000001508Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | BlackRock Small Cap Core Equity31true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:32false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]33false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse9falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000001507 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000001507Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Small Cap Growth Equity Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000001507Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | BlackRock Small Cap Growth Equity Portfolio34true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:35false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]36false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse10falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000001874 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000001874Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Small/Mid-Cap Growth Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000001874Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | BlackRock Small/Mid-Cap Growth Portfolio37true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:38false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]39false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse11falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000001509 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000001509Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock U.S. Opportunities Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000001509Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | BlackRock U.S. Opportunities Portfolio40true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:41false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]42false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse12falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000844779 Member {dei_LegalEntityAxis} : S000028960 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000844779Member_dei_LegalEntityAxis_cik000276463_S000028960Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Fundscik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000844779Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock World Gold Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000028960Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds | BlackRock World Gold Fund43true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:44false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]45false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse13falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0001398078 Member {dei_LegalEntityAxis} : S000018381 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0001398078Member_dei_LegalEntityAxis_cik000276463_S000018381Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Funds IIcik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0001398078Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock High Yield Bond Portfoliodei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000018381Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Funds II | BlackRock High Yield Bond Portfolio46true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:47false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]48false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse14falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000834237 Member {dei_LegalEntityAxis} : S000002245 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000834237Member_dei_LegalEntityAxis_cik000276463_S000002245Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Global Allocation Fund Inccik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000834237Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Global Allocation Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000002245Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Global Allocation Fund Inc | BlackRock Global Allocation Fund, Inc.49true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:50false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]51false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse15falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0001324285 Member {dei_LegalEntityAxis} : S000002718 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0001324285Member_dei_LegalEntityAxis_cik000276463_S000002718Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Global Dynamic Equity Fundcik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0001324285Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Global Dynamic Equity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000002718Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Global Dynamic Equity Fund | BlackRock Global Dynamic Equity Fund52true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:53false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]54false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse16falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000849402 Member {dei_LegalEntityAxis} : S000002250 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000849402Member_dei_LegalEntityAxis_cik000276463_S000002250Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Global Emerging Markets Fund Inccik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000849402Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Global Emerging Markets Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000002250Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Global Emerging Markets Fund Inc | BlackRock Global Emerging Markets Fund, Inc.55true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:56false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]57false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse17falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0001086641 Member {dei_LegalEntityAxis} : S000002241 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0001086641Member_dei_LegalEntityAxis_cik000276463_S000002241Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Global Financial Services Fund Inccik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0001086641Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Global Financial Services Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000002241Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Global Financial Services Fund Inc | BlackRock Global Financial Services Fund, Inc.58true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:59false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]60false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse18falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0000877151 Member {dei_LegalEntityAxis} : S000002247 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0000877151Member_dei_LegalEntityAxis_cik000276463_S000002247Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Latin America Fund Inccik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0000877151Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock Latin America Fund, Inc.dei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000002247Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Latin America Fund Inc | BlackRock Latin America Fund, Inc.61true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:62false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]63false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse19falsefalsetruefalse{cik000276463_CoregistrantAxis} : Cik0001062806 Member {dei_LegalEntityAxis} : S000002291 Member 3/1/2011 - 3/1/2011 Duration_3_1_2011_To_3_1_2011_cik000276463_CoregistrantAxis_cik000276463_Cik0001062806Member_dei_LegalEntityAxis_cik000276463_S000002291Memberhttp://www.sec.gov/CIK0000276463duration2011-03-01T00:00:002011-03-01T00:00:00falsefalseBlackRock Series Inccik000276463_CoregistrantAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_Cik0001062806Membercik000276463_CoregistrantAxisexplicitMemberfalsefalseBlackRock International Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldicik000276463_S000002291Memberdei_LegalEntityAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseBlackRock Series Inc | BlackRock International Fund64true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:65false0cik000276463_SupplementTextBlockcik000276463falsenadurationSuuplement Text Blockfalsefalsefalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div> (each, a "Fund" and collectively, the "Funds") Supplement dated March 1, 2011 to the Prospectuses and Statement of Additional Information of each Fund Effective April 1, 2011, each Fund's Prospectuses are amended as set forth below: Effective at the opening of business on April 1, 2011, the 2% redemption fee charged by the Funds upon the sale or exchange of shares within 30 days of purchase or exchange is terminated and will no longer be charged by the Funds. All references to this fee in the Funds' prospectuses and statements of additional information are hereby deleted. In particular, <ul> <li> In the Fund Overview section of each Fund's prospectus, the Fee Table line item for Redemption Fee should indicate that no redemption fee is charged.</li></ul> </div>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringSuuplement Text BlockNo authoritative reference available.falsefalseSupplement [Text Block]164Risk/Return Detail DataUnKnownUnKnownUnKnownUnKnownfalsetrue