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    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_ClassKMember_MSCIAllCountryWorldInformationTechnology1040IndexNetMember"
      id="h_109_619ad62e_598f_46a1_85a8_982f13443cc8"
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    <oef:AnnlRtrPct
      contextRef="FY2020_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_10_2b598754-0dbe-73f0-93d1-073e260b0396"
      unitRef="pure">0.8625</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2021_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_11_a13eec96-d911-9d5a-7b6d-28dd8833a623"
      unitRef="pure">0.0808</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2022_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_12_49e6ad27-9ef2-98e9-f775-8b3a43974a71"
      unitRef="pure">-0.4313</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2023_S000001510Member_C000004063Member_ServicesMember"
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      id="h_13_618b2787-1c2c-80d8-4fd8-43061b7ce880"
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    <oef:AnnlRtrPct
      contextRef="FY2024_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_14_e321d3b5-6877-466f-1ca1-8b297c49ee22"
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    <oef:AnnlRtrPct
      contextRef="FY2025_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_15_26006acb-7ebe-c040-40aa-59f38280eb0b"
      unitRef="pure">0.1954</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2016_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_6_3d0736a3-8c7f-a457-0208-4ef37b205631"
      unitRef="pure">0.0780</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2017_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_7_f1ded5ea-db46-d819-2fc0-f7e2d9bfc744"
      unitRef="pure">0.4985</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2018_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_8_a7be2137-5275-2f6d-82ea-fbc5dd51f647"
      unitRef="pure">0.0202</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2019_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_9_fd5d4998-a378-4273-0b61-b11e85cadc7e"
      unitRef="pure">0.4385</oef:AnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_ServicesMember_MSCIAllCountryWorldInformationTechnology1040IndexNetMember"
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    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_ServicesMember_MSCIAllCountryWorldInformationTechnology1040IndexNetMember"
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      contextRef="DefaultContext"
      id="h_01_05ae1689_d234_4983_99a4_af6b53149b41">N-1A</dei:EntityInvCompanyType>
    <dei:EntityRegistrantName
      contextRef="DefaultContext"
      id="t_4_61cdbbb4_eb07_3d24_43f6_6ffa4f71aa92">BLACKROCK FUNDS</dei:EntityRegistrantName>
    <oef:ProspectusDate
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      id="h_03_11b7731c_5e24_4022_aba0_6ce5c1e23b01">2026-09-28</oef:ProspectusDate>
    <oef:RiskReturnHeading
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_1_86ea47b6_e5b9_4b68_9e13_e2cdaa1f039b"> Fund Overview  Key Facts About BlackRock Technology Opportunities Fund </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
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      id="t_2_f5b9f788_29ec_430e_84c9_0c3beadc7375">  Investment Objective  </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_3_18fc7dc4_4617_4a77_9bbe_b6a0690882c2"> &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The investment objective of BlackRock Technology Opportunities Fund (the &#x201c;Fund&#x201d;), a series of BlackRock Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;SM&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;Trust&#x201d;), is to provide long-term capital appreciation.&lt;/span&gt;&lt;/div&gt; </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_4_abbd2c3c_1a55_46d2_9ea0_d152a27fad1f">  Fees and Expenses of the Fund  </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_5_11b37010_4395_45c8_93d0_008c50255631"> &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. Amounts in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the table are rounded to the nearest basis point, which in some cases may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;0.00.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;You may pay other fees, such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;as brokerage commissions and other fees to your financial professional or your selected securities dealer, broker, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;investment adviser, service provider or industry professional (including BlackRock Advisors, LLC (&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;) and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;its affiliates) (each, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;Financial Intermediary&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;), which are not reflected in the table and example below.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; You may&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;fund complex advised by BlackRock or its affiliates. More information about these and other discounts is available &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;from your Financial Intermediary and in the &#x201c;Details About the Share Classes&#x201d; and the &#x201c;Intermediary-Defined Sales &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Charge Waiver Policies&#x201d; sections on pages &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;27&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;A-1&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;, respectively, of the Fund&#x2019;s prospectus and in the &#x201c;Purchase of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Shares&#x201d; section on page &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;II-97&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; of Part II of the Fund&#x2019;s Statement of Additional Information.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:ExpenseNarrativeTextBlock>
    <oef:ExpenseBreakpointDiscounts
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_18_415ee535_2ccc_4ca1_1a9c_7bba8ce0577a">You may&#160;qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in the&#160;fund complex advised by BlackRock or its affiliates.</oef:ExpenseBreakpointDiscounts>
    <oef:ExpenseBreakpointMinimumInvestmentRequiredAmount
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      decimals="INF"
      id="h_1_fc0c5f74_d179_47ef_9702_5d8e5407b0f3"
      unitRef="USD">25000</oef:ExpenseBreakpointMinimumInvestmentRequiredAmount>
    <oef:ShareholderFeesCaption
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_6_5d241003_62eb_4598_b7a8_6e8126c78a22">  Shareholder Fees  (fees paid directly from your investment)  </oef:ShareholderFeesCaption>
    <oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_2_b0993e0c_1322_43a0_b55e_841c111547b0"
      unitRef="pure">0.0525</oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
    <oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_3_1595939f_9d03_4959_838e_c112b085da45"
      unitRef="pure">0</oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
    <oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_4_f01572fb_ba14_4825_b9ee_07a03d273884"
      unitRef="pure">0</oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
    <oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_5_bb80abfc_c61c_483f_a7e4_389c158b73c1"
      unitRef="pure">0</oef:MaximumSalesChargeImposedOnPurchasesOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_6_cc85666c_a1cf_4641_907d_dd6aeefae2f3"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_8_047efd08_8958_46d4_b654_856bc5d416c9"
      unitRef="pure">0.0100</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_10_54ea27c2_618e_4972_8d54_f8b77da345b3"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:MaximumDeferredSalesChargeOverOfferingPrice
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_11_7bba41ef_4007_4cca_a1ce_7d2a86c84333"
      unitRef="pure">0</oef:MaximumDeferredSalesChargeOverOfferingPrice>
    <oef:OperatingExpensesCaption
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_7_240daa19_1eaf_469d_9006_29f9ab59e807">  Annual Fund Operating Expenses  (expenses that you pay each year as a  percentage of the value of your investment)  </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_12_16249711_dcbc_45c0_a44a_1b964838b361"
      unitRef="pure">0.0075</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_13_0cf3d648_1c2b_4ea3_bc9d_e9d95cb9e944"
      unitRef="pure">0.0075</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_14_849b5d09_55d0_4699_838a_3aebb03fd98e"
      unitRef="pure">0.0075</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_15_02b77825_0dd2_4379_a70c_1d1c611002d9"
      unitRef="pure">0.0075</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_16_f77daafa_b0e6_4ddb_bc41_00d056fd0d1e"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_17_1f5dd006_04ec_4694_b54f_3aabb387d56f"
      unitRef="pure">0.0100</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_18_7ee5c137_6899_4fc6_ae1a_5e7995360d28"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_19_3f211961_541d_4600_a472_85e38892bcae"
      unitRef="pure">0.0050</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_20_6f945945_cafe_42a8_9472_8934e7a586c6"
      unitRef="pure">0.0019</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_21_51e3eb6a_495a_4287_80fb_4d6c1a310824"
      unitRef="pure">0.0017</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_22_cbf4ed89_4fd9_4939_85a8_0c250977b51d"
      unitRef="pure">0.0019</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_23_7508e17f_0e2c_47b5_9ab7_3289e0ee5dfd"
      unitRef="pure">0.0027</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_24_1e1ddae4_0ea9_4a05_8825_77fd76ec90a0"
      unitRef="pure">0.0119</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_25_3977bd18_2ed9_46e4_9833_b90d1bb10f6c"
      unitRef="pure">0.0192</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_26_8cd8b401_3840_45b3_a7cd_84fe384a9aa3"
      unitRef="pure">0.0094</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_27_169c72da_f0b2_47b1_a637_dba875cd6c8a"
      unitRef="pure">0.0152</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_28_c99d0d6f_f84d_4b15_8409_cc6533ca5334"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_29_b9374c67_27f2_4aa1_a585_e497209a9a37"
      unitRef="pure">-0.0003</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_30_03a610e7_530a_4427_82f6_31fe5798637b"
      unitRef="pure">-0.0005</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_31_2e1e0eae_d236_40fd_828b_7b14a54fd146"
      unitRef="pure">-0.0013</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_32_36e1ba8a_1788_4d66_af0e_3daf17b8d60e"
      unitRef="pure">0.0114</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_33_8850a316_bf95_4c34_8cd7_674cc036a5b9"
      unitRef="pure">0.0189</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_34_45167f59_6d88_495c_b229_99022b51af69"
      unitRef="pure">0.0089</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_35_ffcb905d_3917_4274_9b35_4884bfe05e6f"
      unitRef="pure">0.0139</oef:NetExpensesOverAssets>
    <oef:ExpensesDeferredChargesTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_19_bea6ac62_96fd_628e_ca04_173c4fd16c47">A contingent deferred sales charge (&#x201c;CDSC&#x201d;) of 1.00% is assessed on certain redemptions of Investor A Shares made within 18 months after&#160;purchase where no initial sales charge was paid at the time of purchase as part of an investment of $1,000,000 or more.</oef:ExpensesDeferredChargesTextBlock>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_20_b49b8877_fd72_2818_5314_be35982668a1">June 30, 2028</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_8_9a97de10_6c56_445c_ad0f_0a42601404fe">  Example:  </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_9_220aba8d_e70f_49cb_a8a5_252b6c4f3f29"> &lt;div style="line-height: 10.5555pt; margin-top: 0.00pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.5555pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;or lower, based on these assumptions your costs would be:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_36_a11fada5_3f58_40ba_99e1_cb95ffd2b54c"
      unitRef="USD">635</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_37_33cda372_5a03_4a1f_89ec_17b5378a4527"
      unitRef="USD">878</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_38_75e6c292_9ce3_45b3_b194_f28dbda0432e"
      unitRef="USD">1140</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_39_e920393d_2671_4588_a1f3_96f36e2891c0"
      unitRef="USD">1888</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_40_29f77246_bf35_49c8_8a53_8e41534583cf"
      unitRef="USD">292</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_41_d5b11e57_3e88_4e62_aed0_4b655728eda6"
      unitRef="USD">600</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_42_5dffa497_c8bd_414e_8acc_47d4f3c8bb08"
      unitRef="USD">1034</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_43_e9b4d2e8_cadd_428b_b365_485e3bb99825"
      unitRef="USD">2051</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_44_6fc8e32b_89ee_4825_8657_69bc7ae5c917"
      unitRef="USD">91</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_45_a70b12a3_afc5_4ae0_8341_4c3f33835f33"
      unitRef="USD">295</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_46_a704890a_8364_43bf_a585_0d1918872664"
      unitRef="USD">515</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260531_20260531_S000001510Member_C000004062Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_47_767b370f_5ac7_422b_94db_afef5f1ff7d9"
      unitRef="USD">1150</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_48_e92eac6e_ecf7_4fa8_81a0_ec7681949a81"
      unitRef="USD">142</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_49_926c92d4_303f_4a30_aafc_b044b30fd726"
      unitRef="USD">468</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_50_f46d3983_e960_4dea_bfcb_a281c86f8daa"
      unitRef="USD">817</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260531_20260531_S000001510Member_C000037630Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_51_a7c2f432_2d2a_458b_bab6_dd6553f826d9"
      unitRef="USD">1801</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleNoRedemptionByYearCaption
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_21_080a45f5_2dca_4adc_de6e_c978d218916a"> You would pay the following expenses if you did not redeem your shares:&#x2003; </oef:ExpenseExampleNoRedemptionByYearCaption>
    <oef:ExpenseExampleNoRedemptionYear01
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_52_d3c6b999_1f9a_4d60_ab67_450b8ecbe7e4"
      unitRef="USD">192</oef:ExpenseExampleNoRedemptionYear01>
    <oef:ExpenseExampleNoRedemptionYear03
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_53_1e78593c_ee50_45c9_bae8_c7d16eaeeeac"
      unitRef="USD">600</oef:ExpenseExampleNoRedemptionYear03>
    <oef:ExpenseExampleNoRedemptionYear05
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_54_48721e1c_f4b1_41a0_8ffc_8aadd4b2c889"
      unitRef="USD">1034</oef:ExpenseExampleNoRedemptionYear05>
    <oef:ExpenseExampleNoRedemptionYear10
      contextRef="D20260531_20260531_S000001510Member_C000004066Member_InvestorACInstitutionalAndClassRMember"
      decimals="INF"
      id="h_55_752099f4_dbde_44a4_8019_1344f8c73100"
      unitRef="USD">2051</oef:ExpenseExampleNoRedemptionYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_10_968aa297_8895_47a9_8793_dc03b07cebc8">  Portfolio Turnover:  </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_11_eda03893_ccb9_4ca8_85b1_236206c52dd9"> &lt;div style="line-height: 10.5555pt; margin-top: 0.00pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;57&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;% of the average value of its portfolio.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      decimals="4"
      id="h_56_4430edc0_2b93_4b1c_bde2_8093dd329a0c"
      unitRef="pure">0.57</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_12_a7c30a8c_e3ee_48e3_8cb5_b140342ad663"> Principal Investment Strategies of the Fund </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_13_944eb87a_a474_4da8_ab05_1737960838cf"> &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Under normal market conditions, the Fund invests at least 80% of its net assets, plus the amount of any borrowings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for investment purposes, in equity securities issued by U.S. and non-U.S. technology companies in all market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;capitalization ranges, selected for their rapid and sustainable growth potential from the development, advancement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and use of technology. Investments in derivatives are counted toward the Fund&#x2019;s 80% policy to the extent that they &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;provide investment exposure to the securities included within that policy or to one or more market risk factors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;associated with such securities.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Technology companies may include those companies in the businesses of, among others: software, IT consulting, IT &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;services, interactive home entertainment, interactive media and services, networking equipment, telecom services, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;communications equipment, technology hardware, storage and peripherals, electronic equipment, instruments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;components, semiconductors and semiconductor equipment and consumer finance. The Fund may invest in both &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;developed and emerging markets. BlackRock determines, in its discretion, whether a company is a technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund seeks to invest primarily in common stock but may also invest in preferred stock and convertible securities. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may also invest in Rule 144A securities, which are privately placed securities purchased by qualified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;institutional buyers. From time to time the Fund may invest in shares of companies through initial public offerings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(&#x201c;IPOs&#x201d;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may, when consistent with the Fund&#x2019;s investment objective, buy or sell options or futures on a security or an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;index of securities and may buy options on a currency or a basket of currencies, or enter into foreign currency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transactions, including swaps (collectively, commonly known as derivatives). An option is the right to buy or sell a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security or an index of securities at a specific price on or before a specific date. A future is an agreement to buy or sell &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;a security or an index of securities at a specific price on a specific date. A swap is an agreement whereby one party &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exchanges its right to receive or its obligation to pay one type of currency for another party&#x2019;s obligation to pay or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;right to receive another type of currency in the future or for a period of time. The Fund typically uses derivatives as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;substitute for taking a position in the underlying asset and/or as part of a strategy designed to reduce exposure to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other risks, such as currency risk. The Fund may also use derivatives to enhance returns, in which case their use &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;would involve leveraging risk. The Fund may seek to obtain market exposure to the securities in which it primarily &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;invests by entering into a series of purchase and sale contracts or by using other investment techniques. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may also use forward foreign currency exchange contracts (obligations to buy or sell a currency at a set rate in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;future).&lt;/span&gt;&lt;/div&gt; </oef:StrategyNarrativeTextBlock>
    <fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_70_4d8f7f63_d1e4_4ada_e56d_5b541dd164c8">Under normal market conditions, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in equity securities issued by U.S. and non-U.S. technology companies in all market capitalization ranges, selected for their rapid and sustainable growth potential from the development, advancement and use of technology.</fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock>
    <fnd:NmRule35d1TermSlctnCritSmryTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_69_5367d919_ea59_e14f_effd_0e0dd987e103">Technology companies may include those companies in the businesses of, among others: software, IT consulting, IT services, interactive home entertainment, interactive media and services, networking equipment, telecom services, communications equipment, technology hardware, storage and peripherals, electronic equipment, instruments and components, semiconductors and semiconductor equipment and consumer finance. The Fund may invest in both developed and emerging markets. BlackRock determines, in its discretion, whether a company is a technology company.</fnd:NmRule35d1TermSlctnCritSmryTextBlock>
    <fnd:NmRule35d1TermDfnSmryTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_68_1cb34784_79a1_a902_aa61_7e6c11b0dc9d">The Fund seeks to invest primarily in common stock but may also invest in preferred stock and convertible securities. The Fund may also invest in Rule 144A securities, which are privately placed securities purchased by qualified institutional buyers. From time to time the Fund may invest in shares of companies through initial public offerings (&#x201c;IPOs&#x201d;).</fnd:NmRule35d1TermDfnSmryTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_RiskLoseMoneyMember"
      id="t_22_59d5c85f_1d91_134d_8f70_655144a08379">You may lose part or all of your&#160;investment in the Fund or your investment may not perform as well as other similar investments.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_EquitySecuritiesRiskMember"
      id="t_24_eed5e9b5_ceca_15cc_a79f_efa60c51873c"> &lt;div&gt; &lt;div style="clear: both; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Equity Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Stock markets are volatile. The price of equity securities fluctuates based on changes in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company&#x2019;s financial condition and overall market and economic conditions.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_TechnologySecuritiesRiskMember"
      id="t_25_8d1ee8f4_66fc_cdcb_aed6_7be80580ef51"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Technology Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Certain technology-related companies may face special risks that their products or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;services may not prove to be commercially successful. Technology-related companies are also strongly affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;worldwide scientific or technological developments. As a result, their products may rapidly become obsolete. Such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;companies are also often subject to governmental regulation and may, therefore, be adversely affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;governmental policies. In addition, certain technology-related companies in which the Fund may invest may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;currently be profitable and there can be no assurance that such companies will be profitable in the future.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_ConcentrationRiskMember"
      id="t_26_7e6ce318_7eb6_4978_f581_8f23291054b1"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; The Fund&#x2019;s strategy of concentrating in technology and related companies means that its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;performance will be closely tied to the performance of a particular market segment. The Fund&#x2019;s concentration in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;these companies may present more risks than if it were broadly diversified over numerous industries and sectors of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the economy. A downturn in these companies would have a larger impact on the Fund than on a mutual fund that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;does not concentrate in such companies. At times, the performance of these companies will lag the performance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other industries or the broader market as a whole.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_ConvertibleSecuritiesRiskMember"
      id="t_27_e612c88a_8393_32a3_836c_d4ff90e8cc16"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Convertible Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The market value of a convertible security performs like that of a regular debt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security; that is, if market interest rates rise, the value of a convertible security usually falls. In addition, convertible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities are subject to the risk that the issuer will not be able to pay interest, principal or dividends when due, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;their market value may change based on changes in the issuer&#x2019;s credit rating or the market&#x2019;s perception of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuer&#x2019;s creditworthiness. Since it derives a portion of its value from the common stock into which it may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;converted, a convertible security is also subject to the same types of market and issuer risks that apply to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;underlying common stock, including the potential for increased volatility in the price of the convertible security.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_DerivativesRisksMember"
      id="t_28_db2c18c7_67c9_acb8_0d48_d6171aa08051"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund&#x2019;s use of derivatives may increase its costs, reduce the Fund&#x2019;s returns and/or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;increase volatility. Derivatives involve significant risks, including:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Leverage Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund&#x2019;s use of derivatives can magnify the Fund&#x2019;s gains and losses. Relatively small market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;movements may result in large changes in the value of a derivatives position and can result in losses that greatly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exceed the amount originally invested.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some derivatives are more sensitive to interest rate changes and market price fluctuations than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other securities. The Fund could also suffer losses related to its derivatives positions as a result of unanticipated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;market movements, which losses are potentially unlimited. Finally, BlackRock may not be able to predict correctly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the direction of securities prices, interest rates and other economic factors, which could cause the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;derivatives positions to lose value.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Derivatives are also subject to counterparty risk, which is the risk that the other party in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transaction will be unable or unwilling to fulfill its contractual obligation, and the related risks of having concentrated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exposure to such a counterparty.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The possible lack of a liquid secondary market for derivatives and the resulting inability of the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to sell or otherwise close a derivatives position could expose the Fund to losses and could make derivatives more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;difficult for the Fund to value accurately.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Operational Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The use of derivatives includes the risk of potential operational issues, including documentation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues, settlement issues, systems failures, inadequate controls and human error.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Legal Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The risk of insufficient documentation, insufficient capacity or authority of counterparty, or legality or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;enforceability of a contract.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Volatility and Correlation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Volatility is defined as the characteristic of a security, an index or a market to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuate significantly in price within a short time period. A risk of the Fund&#x2019;s use of derivatives is that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuations in their values may not correlate with the overall securities markets.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Valuation for derivatives may not be readily available in the market. Valuation may be more difficult &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;in times of market turmoil since many investors and market makers may be reluctant to purchase complex &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;instruments or quote prices for them.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Hedging Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Hedges are sometimes subject to imperfect matching between the derivative and the underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security, and there can be no assurance that the Fund&#x2019;s hedging transactions will be effective. The use of hedging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may result in certain adverse tax consequences.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Certain aspects of the tax treatment of derivative instruments, including swap agreements and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;commodity-linked derivative instruments, are currently unclear and may be affected by changes in legislation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;regulations or other legally binding authority. Such treatment may be less favorable than that given to a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment in an underlying asset and may adversely affect the timing, character and amount of income the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;realizes from its investments.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_EmergingMarketsRiskMember"
      id="t_29_47474ea1_bc40_29d2_ceab_fd04f0313655"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Emerging Markets Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Emerging markets are riskier than more developed markets because they tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;develop unevenly and may never fully develop. Investments in emerging markets may be considered speculative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Emerging markets are more likely to experience hyperinflation and currency devaluations, which adversely affect &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="line-height: 10.5555pt; margin-left: 12pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;returns to U.S. investors. In addition, many emerging financial markets have far lower trading volumes and less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;liquidity than developed markets.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_ForeignSecuritiesRiskMember"
      id="t_30_cee44407_14b3_8923_2d93_babeadf3066f"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Foreign Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Foreign investments often involve special risks not present in U.S. investments that can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;increase the chances that the Fund will lose money. These risks include:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund generally holds its foreign securities and cash in foreign banks and securities depositories, which may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;be recently organized or new to the foreign custody business and may be subject to only limited or no regulatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;oversight.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Changes in foreign currency exchange rates can affect the value of the Fund&#x2019;s portfolio.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The economies of certain foreign markets may not compare favorably with the economy of the United States with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;respect to such issues as growth of gross national product, reinvestment of capital, resources and balance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;payments position.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The governments of certain countries, or the U.S. Government with respect to certain countries, may prohibit or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;impose substantial restrictions through capital controls and/or sanctions on foreign investments in the capital &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;markets or certain industries in those countries, which may prohibit or restrict the ability to own or transfer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;currency, securities, derivatives or other assets.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Many foreign governments do not supervise and regulate stock exchanges, brokers and the sale of securities to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the same extent as does the United States and may not have laws to protect investors that are comparable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;U.S. securities laws.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 493.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Settlement and clearance procedures in certain foreign markets may result in delays in payment for or delivery of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities not typically associated with settlement and clearance of U.S. investments.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund&#x2019;s claims to recover foreign withholding taxes may not be successful, and if the likelihood of recovery of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;foreign withholding taxes materially decreases, due to, for example, a change in tax regulation or approach in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;foreign country, accruals in the Fund&#x2019;s net asset value for such refunds may be written down partially or in full, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;which will adversely affect the Fund&#x2019;s net asset value.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_GeographicConcentrationRisksMember"
      id="t_31_c19da86d_ce66_1984_f8ea_6ac85e72d581"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Geographic Concentration Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; From time to time the Fund may invest a substantial amount of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers located in a single country or a limited number of countries. If the Fund concentrates its investments in this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;manner, it assumes the risk that economic, political and social conditions in those countries will have a significant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;impact on its investment performance. The Fund&#x2019;s investment performance may also be more volatile if it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;concentrates its investments in certain countries, especially emerging market countries.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_InvestmentStyleRiskMember"
      id="t_32_4f6da354_b778_2894_5486_09d381feefad"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Investment Style Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Under certain market conditions, growth investments have performed better during the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;later stages of economic expansion. Therefore, this investment style may over time go in and out of favor. At times &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;when the investment style used by the Fund is out of favor, the Fund may underperform other equity funds that use &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;different investment styles.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_LeverageRiskMember"
      id="t_33_7a0a760b_9ab4_f726_1fb6_ffca6e26302d"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Leverage Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some transactions may give rise to a form of economic leverage. These transactions may include, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;among others, derivatives, and may expose the Fund to greater risk and increase its costs. The use of leverage may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cause the Fund to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to meet the applicable requirements of the Investment Company Act of 1940, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Company Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;), and the rules thereunder. Increases and decreases in the value of the Fund&#x2019;s portfolio will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;magnified when the Fund uses leverage.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_MarketRiskAndSelectionRiskMember"
      id="t_34_bc931a8b_4b29_e80d_9882_52b1e34d59cd"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Market Risk and Selection Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Market risk is the risk that one or more markets in which the Fund invests will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;go down in value, including the possibility that the markets will go down sharply and unpredictably. An investor could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;lose money over short periods due to fluctuation in the Fund&#x2019;s net asset value in response to short-term market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;movements and over longer periods during market downturns. Securities or other investments held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;underperform the markets, the relevant indices or benchmarks, or the securities selected by other funds with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;similar investment objectives and investment strategies, or may otherwise fail to perform as intended. The value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;a security or other asset may decline due to changes in general market conditions, economic trends or events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;are not specifically related to the issuer of the security or other asset, or factors that affect a particular issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers, exchange, country, group of countries, region, market, industry, group of industries, sector or asset class. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The success of a Fund&#x2019;s activities could be affected by interest rates, availability of credit, inflation rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;uncertainty, changes in laws, tariffs and trade barriers, supply chain disruptions, economic sanctions, currency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exchange controls, and local, regional or global events such as war, acts of terrorism, natural and environmental &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;disasters, the spread of infectious illness or other public health issues, recessions, or other events.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 2pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Recent policy initiatives undertaken by the U.S. government have the potential to impact international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;trade agreements and the overall regulatory environment in ways that could create uncertainty and instability in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;domestic and global markets, and could adversely affect the investment performance of the Fund. In particular, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;actions taken by the U.S. government in respect of international trade relations could lead to trade wars, increased &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;costs for imported goods, disruptions in supply chains, reduced foreign investment, and instability in regions where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the Fund invests.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_MidCapSecuritiesRiskMember"
      id="t_35_58523ed6_03ac_01c4_ed5a_6f25082ea81a"> &lt;div&gt; &lt;div style="clear: both; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Mid Cap Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The securities of mid cap companies generally trade in lower volumes and are generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;subject to greater and less predictable price changes than the securities of larger capitalization companies.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_NewIssuesRiskMember"
      id="t_36_fdde4a6a_bddd_5264_96f8_3ccc27d2e2ab"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;&#x201c;New Issues&#x201d; Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x201c;New issues&#x201d; are IPOs of equity securities. Securities issued in IPOs have no trading history, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and information about the companies may be available for very limited periods. In addition, the prices of securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;sold in IPOs may be highly volatile or may decline shortly after the IPO.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_OperationalAndTechnologyRisksMember"
      id="t_37_66b8bafb_eefd_fec3_2b75_cfd74e2d2d9e"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Operational and Technology Risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund is directly and indirectly susceptible to operational and technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;risks, including those related to human errors, processing errors, communication errors, systems failures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cybersecurity incidents, and the use of artificial intelligence and machine learning (&#x201c;AI&#x201d;), which may result in losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the Fund and its shareholders or may impair the Fund&#x2019;s operations. While the Fund&#x2019;s service providers are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;required to have appropriate operational, information security and cybersecurity risk management policies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;procedures, their methods of risk management may differ from those of the Fund. Operational and technology risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the issuers in which the Fund invests could also result in material adverse consequences for such issuers and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may cause the Fund&#x2019;s investments in such issuers to lose value.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_PreferredSecuritiesRiskMember"
      id="t_38_95cfb72b_4a03_7ff9_891c_5e58a6fe4a39"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Preferred Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Preferred securities may pay fixed or adjustable rates of return. Preferred securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;are subject to issuer-specific and market risks applicable generally to equity securities. In addition, a company&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;preferred securities generally pay dividends only after the company makes required payments to holders of its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;bonds and other debt. For this reason, the value of preferred securities will usually react more strongly than bonds &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and other debt to actual or perceived changes in the company&#x2019;s financial condition or prospects. Preferred &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities of smaller companies may be more vulnerable to adverse developments than preferred securities of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;larger companies.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_PurchaseAndSaleContractsRiskMember"
      id="t_39_0673042f_b3e0_4fad_f837_0d608c1001e2"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Purchase and Sale Contracts Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; If the other party to a purchase and sale contract defaults on its obligation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;under the agreement, the Fund may suffer delays and incur costs or lose money in exercising its rights under the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;agreement. If the seller fails to repurchase the security and the market value of the security declines, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;lose money.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember_RestrictedSecuritiesRiskMember"
      id="t_40_56d8494b_69ec_f9a0_cde6_00fe9551ba64"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Restricted Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Limitations on the resale, including any required lock up or holding periods, of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;restricted securities may have an adverse effect on their marketability and their liquidity may prevent the Fund from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;disposing of them promptly at advantageous prices, if at all. Restricted securities may not be listed on an exchange &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and may have no active trading market. In order to sell certain restricted securities, the Fund may have to bear the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;expense of registering the securities for resale and the risk of substantial delays in effecting the registration. Other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transaction costs may be higher for restricted securities than unrestricted securities. Restricted securities may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;difficult to value because market quotations may not be readily available, there may be limited other information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;regarding the investment&#x2019;s market or fair value, and the securities values may have significant volatility. Also, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Fund may get only limited information about the issuer of a given restricted security, and therefore may be less able &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to determine the security&#x2019;s market or fair value or assess the investment risks as fully as for other issuers for which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;more information is available. Certain restricted securities may involve a high degree of business and financial risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and may result in substantial losses to the Fund. Certain restricted securities may represent limited investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;opportunities and each shareholder&#x2019;s proportionate investment exposure to such limited investment opportunities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may be reduced proportionately as the Fund&#x2019;s net assets grow from new or additional investments made in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Fund by other shareholders.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
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      id="t_41_3413b93b_9fd4_91c7_68d9_ccf3355c7892"> &lt;div&gt; &lt;div style="clear: both; margin-top: 2.7945pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.72pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.65pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Small Cap Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Small cap companies may have limited product lines or markets. They may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;financially secure than larger, more established companies. They may depend on a more limited management group &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;than larger capitalized companies.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.5555pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
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      id="t_15_6d1bceec_f39e_4cc6_a6ab_82fa56de3c67"> Performance Information </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_64_b4a380fb_520a_9a59_3b49_65009593e116">&lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The information shows you how the Fund&#x2019;s performance has varied year by year and provides some indication of the&#160;risks of investing in the Fund. Effective December 30, 2017, the Fund changed its name, investment process and investment strategies. Performance for the periods prior to December 30, 2017, shown below, is based on the investment process and investment strategies utilized by the Fund at that time under the name &#x201c;BlackRock Science &amp;amp; Technology Opportunities Portfolio.&#x201d; The table compares the Fund&#x2019;s performance to that of the MSCI All Country World&#160;Index (Net), the MSCI All-Country World Information Technology 10/40 Index (Net) and the MSCI All-Country World&#160;Information Technology Index (Net). The MSCI All-Country World Information Technology 10/40 Index (Net) and the&#160;MSCI All-Country World Information Technology Index (Net) are relevant to the Fund because they have characteristics&#160;similar to the Fund&#x2019;s investment strategy. To the extent that dividends and distributions have been paid by the Fund, the performance information for the Fund in the chart and table assumes reinvestment of the dividends and distributions. As with all such investments, past performance (before and after taxes) is not an indication of future&#160;results. Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;However, the table includes all applicable fees and sales charges. If BlackRock and its affiliates had not waived or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;reimbursed certain Fund expenses during these periods, the Fund&#x2019;s returns would have been lower. Updated &lt;/span&gt;&lt;/div&gt;&lt;div style="line-height: 10.5555pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;information on the Fund&#x2019;s performance, including its current net asset value, can be obtained by visiting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;www.blackrock.com or can be obtained by phone at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(800) 882-0052&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;.&lt;/span&gt;&lt;/div&gt;</oef:PerformanceNarrativeTextBlock>
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      id="t_66_d69743d3_5ea6_9306_2480_919f0920dede">The information shows you how the Fund&#x2019;s performance has varied year by year and provides some indication of the&#160;risks of investing in the Fund.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceAdditionalMarketIndex
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_67_c110c1a9_c00c_dc80_bec1_a6683a64488e">The table compares the Fund&#x2019;s performance to that of the MSCI All Country World&#160;Index (Net), the MSCI All-Country World Information Technology 10/40 Index (Net) and the MSCI All-Country World&#160;Information Technology Index (Net). The MSCI All-Country World Information Technology 10/40 Index (Net) and the&#160;MSCI All-Country World Information Technology Index (Net) are relevant to the Fund because they have characteristics&#160;similar to the Fund&#x2019;s investment strategy.</oef:PerformanceAdditionalMarketIndex>
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      id="t_65_a7f7fabc_37b9_fac9_a507_34a4f54e45e9">As with all such investments, past performance (before and after taxes) is not an indication of future&#160;results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:BarChartDoesNotReflectSalesLoads
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_46_083df3b3_b23c_cf43_c716_7bbf136a7539">Sales charges are not reflected in the bar chart. If they were, returns would be less than those shown.</oef:BarChartDoesNotReflectSalesLoads>
    <oef:PerformanceTableDoesReflectSalesLoads
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      id="t_51_77c2f6d0_945e_6f8a_e1d5_eff600bbfa10">However, the table includes all applicable fees and sales charges.</oef:PerformanceTableDoesReflectSalesLoads>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_55_b6de1037_b0a4_24a3_9b22_ffe17247324a">www.blackrock.com</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_56_19a8efa0_8fc1_615c_cb40_f47c297a32db">(800) 882-0052</oef:PerformanceAvailabilityPhone>
    <oef:BarChartHeading
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_47_0b1ad5a9_a725_016e_b759_abe6a5852ad3"> Investor A Shares ANNUAL TOTAL RETURNS BlackRock Technology Opportunities Fund As of 12/31 </oef:BarChartHeading>
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      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_48_8f48c367_fe7e_08cd_bafc_e39ba8ed5eb4"> &lt;div style="margin-top: 3pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;During the ten-year period shown in the bar chart, the highest return for a quarter was 44.13% (quarter ended &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;June 30, 2020) and the lowest return for a quarter was -27.10% (quarter ended June 30, 2022). The year-to-date return as of June 30, 2026 was 42.71%.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:BarChartClosingTextBlock>
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      id="t_59_a1878166_1e38_8de4_85b4_cb6a910cb8d5">highest return</oef:HighestQuarterlyReturnLabel>
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      decimals="4"
      id="h_85_8502203d_aaf0_4a81_c957_301a343984b9"
      unitRef="pure">0.4413</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
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      id="t_60_f91b1e39_a50d_8420_a458_cf4868c39434">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
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      id="h_86_0b9368ed_6583_8c30_351a_c03ab9fc7403"
      unitRef="pure">-0.2710</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="D20260531_20260531_S000001510Member_C000004064Member_InvestorACInstitutionalAndClassRMember"
      id="t_62_3c1fa53f_5292_e76d_897c_5f5b7b034cac">2022-06-30</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
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      id="t_57_bedb87fc_8721_6855_dfc4_a92c581ceb81">year-to-date return</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturnDate
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      id="t_58_707116fb_e30c_6fce_2f94_b3483894f7f4">2026-06-30</oef:BarChartYearToDateReturnDate>
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      id="h_84_3103c879_7a3c_e8a7_3b6f_233287d98ad8"
      unitRef="pure">0.4271</oef:BarChartYearToDateReturn>
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      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_49_84ac8a94_231a_6498_dc1c_eb71dac8d9d7">For the periods ended 12/31/25Average Annual Total Returns</oef:PerformanceTableHeading>
    <oef:AvgAnnlRtrPct
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      unitRef="pure">0.1326</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_58_e46b20a5_1d48_488e_95f7_a2be3b92ba2b"
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    <oef:AvgAnnlRtrPct
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      decimals="4"
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      unitRef="pure">0.1996</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0967</oef:AvgAnnlRtrPct>
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      id="h_61_705a86d4_db16_4989_a805_3320fb495089"
      unitRef="pure">0.0567</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.1877</oef:AvgAnnlRtrPct>
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    <oef:AvgAnnlRtrPct
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      decimals="4"
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      decimals="4"
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    <oef:AvgAnnlRtrPct
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      decimals="4"
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      decimals="4"
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      decimals="4"
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      decimals="4"
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      decimals="4"
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      unitRef="pure">0.1923</oef:AvgAnnlRtrPct>
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      decimals="4"
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      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_50_911cd9f0_8494_3660_f411_f0797ae7bd9e"> &lt;div style="margin-top: 9pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;reflect the impact of state and local taxes. Actual after-tax returns depend on the investor&#x2019;s tax situation and may&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;Investor A Shares only, and the after-tax returns for Investor C, Institutional and Class R Shares will vary.&lt;/span&gt;&lt;/div&gt; </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_52_36909315_4f1b_60cb_2ae4_0a752c195471">After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not&#160;reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_53_97958745_61b7_1738_2763_4dcfee51ffbd">Actual after-tax returns depend on the investor&#x2019;s tax situation and may&#160;differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through&#160;tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="D20260531_20260531_S000001510Member_InvestorACInstitutionalAndClassRMember"
      id="t_54_1c627f89_1be3_150b_b87f_4e9419dfcbbd">After-tax returns are shown for&#160;Investor A Shares only, and the after-tax returns for Investor C, Institutional and Class R Shares will vary.</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:RiskReturnHeading
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_18_a3f097ea_328c_4889_aaec_b769f5f90413"> Fund Overview  Key Facts About BlackRock Technology Opportunities Fund </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_19_403f8614_519d_4ce0_a6f0_d0de33d94328">  Investment Objective  </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_20_6343c31a_9626_4b57_80e2_de3839c676e3"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The investment objective of BlackRock Technology Opportunities Fund (the &#x201c;Fund&#x201d;), a series of BlackRock Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;SM&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;Trust&#x201d;), is to provide long-term capital appreciation.&lt;/span&gt;&lt;/div&gt; </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_21_e8c4b506_fe83_4a91_8801_93f7ae11f8af">  Fees and Expenses of the Fund  </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_22_b7b5d8a8_cb59_45da_a78d_e76dfa40bf9e"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This table describes the fees and expenses that you may pay if you buy, hold and sell Class K Shares of the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Amounts in the table are rounded to the nearest basis point, which in some cases may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;0.00.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;You may pay other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;fees, such as brokerage commissions and other fees to your financial professional or your selected securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;dealer, broker, investment adviser, service provider or industry professional (including BlackRock Advisors, LLC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;) and its affiliates) (each, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;Financial Intermediary&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;), which are not reflected in the table and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;example below.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_23_08a4921d_f35d_42c4_bd4c_d911b72d05fd">  Annual Fund Operating Expenses  (expenses that you pay each year as a  percentage of the value of your investment)  </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="4"
      id="h_84_aec9e527_fb14_499c_9d5a_09b51c472ff8"
      unitRef="pure">0.0075</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="4"
      id="h_85_a594c300_4b37_43c6_8759_7ba4c25020af"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="4"
      id="h_86_3518f3d8_de53_46c3_90b7_990b758d5e0a"
      unitRef="pure">0.0008</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="4"
      id="h_87_859af850_07ae_479d_a440_2b2e3e20726f"
      unitRef="pure">0.0083</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="4"
      id="h_88_113b00c9_e888_4069_85ad_3752e3113764"
      unitRef="pure">0.0000</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="4"
      id="h_89_51604930_1f7c_4229_8fc8_274bf9123f95"
      unitRef="pure">0.0083</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_34_521d1210_d758_807a_2144_4c5a6eb98a44">June 30, 2028</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_24_f94e45fb_2947_40ab_88cc_4478deb21096">  Example:  </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_25_2319a6d0_96df_40e8_8f74_83e620945db4"> &lt;div style="line-height: 10.695pt; margin-top: 0.0pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;or lower, based on these assumptions your costs would be:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="INF"
      id="h_90_b77bbf73_7f27_49cc_af11_c8a0e24da37d"
      unitRef="USD">85</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="INF"
      id="h_91_1f2bd733_3a5c_4a51_a5fc_009cea310cec"
      unitRef="USD">265</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="INF"
      id="h_92_df6019dd_9f6b_456b_ab7e_cd54318f7c78"
      unitRef="USD">460</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="INF"
      id="h_93_d112dd4f_cd16_4e50_99bd_a974e3a89bea"
      unitRef="USD">1025</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_26_b012f76a_9864_4738_a679_257195bed24e">  Portfolio Turnover:  </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_27_0bf2ee55_c0ac_4cf2_a065_a7c3e8d55bfc"> &lt;div style="line-height: 10.695pt; margin-top: 0.0pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.695pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;57&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;% of the average value of its portfolio.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      decimals="4"
      id="h_94_bef80ed4_58ce_435c_a269_5efe13562c0c"
      unitRef="pure">0.57</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_28_eb53fe64_8e6d_4478_8914_8d4e927f25ce"> Principal Investment Strategies of the Fund </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_29_68e4705a_abf4_4e32_afa9_558149530b6c"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Under normal market conditions, the Fund invests at least 80% of its net assets, plus the amount of any borrowings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for investment purposes, in equity securities issued by U.S. and non-U.S. technology companies in all market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;capitalization ranges, selected for their rapid and sustainable growth potential from the development, advancement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and use of technology. Investments in derivatives are counted toward the Fund&#x2019;s 80% policy to the extent that they &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;provide investment exposure to the securities included within that policy or to one or more market risk factors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;associated with such securities.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Technology companies may include those companies in the businesses of, among others: software, IT consulting, IT &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;services, interactive home entertainment, interactive media and services, networking equipment, telecom services, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;communications equipment, technology hardware, storage and peripherals, electronic equipment, instruments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;components, semiconductors and semiconductor equipment and consumer finance. The Fund may invest in both &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;developed and emerging markets. BlackRock determines, in its discretion, whether a company is a technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund seeks to invest primarily in common stock but may also invest in preferred stock and convertible securities. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may also invest in Rule 144A securities, which are privately placed securities purchased by qualified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;institutional buyers. From time to time the Fund may invest in shares of companies through initial public offerings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(&#x201c;IPOs&#x201d;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may, when consistent with the Fund&#x2019;s investment objective, buy or sell options or futures on a security or an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;index of securities and may buy options on a currency or a basket of currencies, or enter into foreign currency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transactions, including swaps (collectively, commonly known as derivatives). An option is the right to buy or sell a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security or an index of securities at a specific price on or before a specific date. A future is an agreement to buy or sell &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;a security or an index of securities at a specific price on a specific date. A swap is an agreement whereby one party &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exchanges its right to receive or its obligation to pay one type of currency for another party&#x2019;s obligation to pay or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;right to receive another type of currency in the future or for a period of time. The Fund typically uses derivatives as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;substitute for taking a position in the underlying asset and/or as part of a strategy designed to reduce exposure to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other risks, such as currency risk. The Fund may also use derivatives to enhance returns, in which case their use &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;would involve leveraging risk. The Fund may seek to obtain market exposure to the securities in which it primarily &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;invests by entering into a series of purchase and sale contracts or by using other investment techniques. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may also use forward foreign currency exchange contracts (obligations to buy or sell a currency at a set rate in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;future).&lt;/span&gt;&lt;/div&gt; </oef:StrategyNarrativeTextBlock>
    <fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_74_4db49a57_54d3_59c5_0cb8_3cae524c1725">Under normal market conditions, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in equity securities issued by U.S. and non-U.S. technology companies in all market capitalization ranges, selected for their rapid and sustainable growth potential from the development, advancement and use of technology.</fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock>
    <fnd:NmRule35d1TermSlctnCritSmryTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_76_549bb7b9_1a6c_5529_65c7_ffe515b621c2">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Technology companies may include those companies in the businesses of, among others: software, IT consulting, IT &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;services, interactive home entertainment, interactive media and services, networking equipment, telecom services, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;communications equipment, technology hardware, storage and peripherals, electronic equipment, instruments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;components, semiconductors and semiconductor equipment and consumer finance. The Fund may invest in both &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;developed and emerging markets. BlackRock determines, in its discretion, whether a company is a technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company.&lt;/span&gt;&lt;/div&gt;</fnd:NmRule35d1TermSlctnCritSmryTextBlock>
    <fnd:NmRule35d1TermDfnSmryTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_75_c0976bf3_55bf_7240_a9d1_47bd9cc40c33">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund seeks to invest primarily in common stock but may also invest in preferred stock and convertible securities. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may also invest in Rule 144A securities, which are privately placed securities purchased by qualified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;institutional buyers. From time to time the Fund may invest in shares of companies through initial public offerings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(&#x201c;IPOs&#x201d;).&lt;/span&gt;&lt;/div&gt;</fnd:NmRule35d1TermDfnSmryTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_RiskLoseMoneyMember"
      id="t_35_f85e2f61_07d0_a13d_a664_b6ee06773fb0">You may lose part or all of your&#160;investment in the Fund or your investment may not perform as well as other similar investments.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_EquitySecuritiesRiskMember"
      id="t_37_b3b91fff_cb0a_d28f_cafc_67cf62034469"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Equity Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Stock markets are volatile. The price of equity securities fluctuates based on changes in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company&#x2019;s financial condition and overall market and economic conditions.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_TechnologySecuritiesRiskMember"
      id="t_38_1056a2ea_7268_d113_799f_5e9d7f8cd81c"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Technology Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Certain technology-related companies may face special risks that their products or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;services may not prove to be commercially successful. Technology-related companies are also strongly affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;worldwide scientific or technological developments. As a result, their products may rapidly become obsolete. Such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;companies are also often subject to governmental regulation and may, therefore, be adversely affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;governmental policies. In addition, certain technology-related companies in which the Fund may invest may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;currently be profitable and there can be no assurance that such companies will be profitable in the future.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_ConcentrationRiskMember"
      id="t_39_57d587a9_7d40_7d64_e726_523fb0ff8bfe"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; The Fund&#x2019;s strategy of concentrating in technology and related companies means that its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;performance will be closely tied to the performance of a particular market segment. The Fund&#x2019;s concentration in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;these companies may present more risks than if it were broadly diversified over numerous industries and sectors of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the economy. A downturn in these companies would have a larger impact on the Fund than on a mutual fund that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;does not concentrate in such companies. At times, the performance of these companies will lag the performance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other industries or the broader market as a whole.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_ConvertibleSecuritiesRiskMember"
      id="t_40_74a9b08f_53eb_1e6b_4e7a_b0cf867d9607"> &lt;div&gt; &lt;div style="clear: both; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Convertible Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The market value of a convertible security performs like that of a regular debt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security; that is, if market interest rates rise, the value of a convertible security usually falls. In addition, convertible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities are subject to the risk that the issuer will not be able to pay interest, principal or dividends when due, and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;their market value may change based on changes in the issuer&#x2019;s credit rating or the market&#x2019;s perception of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuer&#x2019;s creditworthiness. Since it derives a portion of its value from the common stock into which it may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;converted, a convertible security is also subject to the same types of market and issuer risks that apply to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;underlying common stock, including the potential for increased volatility in the price of the convertible security.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_DerivativesRisksMember"
      id="t_41_92691f2d_dd61_6f16_c093_c6987ec067c2"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund&#x2019;s use of derivatives may increase its costs, reduce the Fund&#x2019;s returns and/or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;increase volatility. Derivatives involve significant risks, including:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Leverage Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund&#x2019;s use of derivatives can magnify the Fund&#x2019;s gains and losses. Relatively small market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;movements may result in large changes in the value of a derivatives position and can result in losses that greatly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exceed the amount originally invested.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some derivatives are more sensitive to interest rate changes and market price fluctuations than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other securities. The Fund could also suffer losses related to its derivatives positions as a result of unanticipated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;market movements, which losses are potentially unlimited. Finally, BlackRock may not be able to predict correctly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the direction of securities prices, interest rates and other economic factors, which could cause the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;derivatives positions to lose value.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Derivatives are also subject to counterparty risk, which is the risk that the other party in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transaction will be unable or unwilling to fulfill its contractual obligation, and the related risks of having concentrated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exposure to such a counterparty.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The possible lack of a liquid secondary market for derivatives and the resulting inability of the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to sell or otherwise close a derivatives position could expose the Fund to losses and could make derivatives more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;difficult for the Fund to value accurately.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Operational Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The use of derivatives includes the risk of potential operational issues, including documentation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues, settlement issues, systems failures, inadequate controls and human error.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Legal Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The risk of insufficient documentation, insufficient capacity or authority of counterparty, or legality or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;enforceability of a contract.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Volatility and Correlation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Volatility is defined as the characteristic of a security, an index or a market to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuate significantly in price within a short time period. A risk of the Fund&#x2019;s use of derivatives is that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuations in their values may not correlate with the overall securities markets.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Valuation for derivatives may not be readily available in the market. Valuation may be more difficult &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;in times of market turmoil since many investors and market makers may be reluctant to purchase complex &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;instruments or quote prices for them.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Hedging Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Hedges are sometimes subject to imperfect matching between the derivative and the underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security, and there can be no assurance that the Fund&#x2019;s hedging transactions will be effective. The use of hedging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may result in certain adverse tax consequences.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Certain aspects of the tax treatment of derivative instruments, including swap agreements and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;commodity-linked derivative instruments, are currently unclear and may be affected by changes in legislation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;regulations or other legally binding authority. Such treatment may be less favorable than that given to a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment in an underlying asset and may adversely affect the timing, character and amount of income the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;realizes from its investments.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_EmergingMarketsRiskMember"
      id="t_42_937bf11e_672d_fea9_254f_137c1fcba996"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Emerging Markets Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Emerging markets are riskier than more developed markets because they tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;develop unevenly and may never fully develop. Investments in emerging markets may be considered speculative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Emerging markets are more likely to experience hyperinflation and currency devaluations, which adversely affect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;returns to U.S. investors. In addition, many emerging financial markets have far lower trading volumes and less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;liquidity than developed markets.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_ForeignSecuritiesRiskMember"
      id="t_43_d689f095_9201_425e_219f_20d98c0de890"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Foreign Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Foreign investments often involve special risks not present in U.S. investments that can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;increase the chances that the Fund will lose money. These risks include:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund generally holds its foreign securities and cash in foreign banks and securities depositories, which may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;be recently organized or new to the foreign custody business and may be subject to only limited or no regulatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;oversight.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Changes in foreign currency exchange rates can affect the value of the Fund&#x2019;s portfolio.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The economies of certain foreign markets may not compare favorably with the economy of the United States with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;respect to such issues as growth of gross national product, reinvestment of capital, resources and balance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;payments position.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The governments of certain countries, or the U.S. Government with respect to certain countries, may prohibit or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;impose substantial restrictions through capital controls and/or sanctions on foreign investments in the capital &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;markets or certain industries in those countries, which may prohibit or restrict the ability to own or transfer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;currency, securities, derivatives or other assets.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Many foreign governments do not supervise and regulate stock exchanges, brokers and the sale of securities to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the same extent as does the United States and may not have laws to protect investors that are comparable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;U.S. securities laws.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Settlement and clearance procedures in certain foreign markets may result in delays in payment for or delivery of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities not typically associated with settlement and clearance of U.S. investments.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund&#x2019;s claims to recover foreign withholding taxes may not be successful, and if the likelihood of recovery of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;foreign withholding taxes materially decreases, due to, for example, a change in tax regulation or approach in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;foreign country, accruals in the Fund&#x2019;s net asset value for such refunds may be written down partially or in full, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;which will adversely affect the Fund&#x2019;s net asset value.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_GeographicConcentrationRisksMember"
      id="t_44_f1f67079_e17f_5a94_ec94_501210651b81"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Geographic Concentration Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; From time to time the Fund may invest a substantial amount of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers located in a single country or a limited number of countries. If the Fund concentrates its investments in this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;manner, it assumes the risk that economic, political and social conditions in those countries will have a significant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;impact on its investment performance. The Fund&#x2019;s investment performance may also be more volatile if it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;concentrates its investments in certain countries, especially emerging market countries.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_InvestmentStyleRiskMember"
      id="t_45_cf4f24e3_829a_b3c4_8b9e_9f38bb3a9a67"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Investment Style Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Under certain market conditions, growth investments have performed better during the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;later stages of economic expansion. Therefore, this investment style may over time go in and out of favor. At times &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;when the investment style used by the Fund is out of favor, the Fund may underperform other equity funds that use &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;different investment styles.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_LeverageRiskMember"
      id="t_46_6b1dc19c_13cd_768d_45f5_ceb8d0115f8c"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Leverage Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some transactions may give rise to a form of economic leverage. These transactions may include, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;among others, derivatives, and may expose the Fund to greater risk and increase its costs. The use of leverage may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cause the Fund to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to meet the applicable requirements of the Investment Company Act of 1940, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Company Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;), and the rules thereunder. Increases and decreases in the value of the Fund&#x2019;s portfolio will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;magnified when the Fund uses leverage.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_MarketRiskAndSelectionRiskMember"
      id="t_47_532623c7_a1b1_7a46_a12c_014a31821d09"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Market Risk and Selection Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Market risk is the risk that one or more markets in which the Fund invests will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;go down in value, including the possibility that the markets will go down sharply and unpredictably. An investor could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;lose money over short periods due to fluctuation in the Fund&#x2019;s net asset value in response to short-term market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;movements and over longer periods during market downturns. Securities or other investments held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;underperform the markets, the relevant indices or benchmarks, or the securities selected by other funds with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;similar investment objectives and investment strategies, or may otherwise fail to perform as intended. The value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;a security or other asset may decline due to changes in general market conditions, economic trends or events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;are not specifically related to the issuer of the security or other asset, or factors that affect a particular issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers, exchange, country, group of countries, region, market, industry, group of industries, sector or asset class. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The success of a Fund&#x2019;s activities could be affected by interest rates, availability of credit, inflation rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;uncertainty, changes in laws, tariffs and trade barriers, supply chain disruptions, economic sanctions, currency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exchange controls, and local, regional or global events such as war, acts of terrorism, natural and environmental &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;disasters, the spread of infectious illness or other public health issues, recessions, or other events.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Recent policy initiatives undertaken by the U.S. government have the potential to impact international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;trade agreements and the overall regulatory environment in ways that could create uncertainty and instability in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;domestic and global markets, and could adversely affect the investment performance of the Fund. In particular, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;actions taken by the U.S. government in respect of international trade relations could lead to trade wars, increased &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;costs for imported goods, disruptions in supply chains, reduced foreign investment, and instability in regions where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the Fund invests.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_MidCapSecuritiesRiskMember"
      id="t_48_88dde419_0995_eab9_8d2a_c41e161aa958"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Mid Cap Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The securities of mid cap companies generally trade in lower volumes and are generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;subject to greater and less predictable price changes than the securities of larger capitalization companies.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_NewIssuesRiskMember"
      id="t_49_451619a2_6f5f_f796_117b_3293e34e98d1"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;&#x201c;New Issues&#x201d; Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x201c;New issues&#x201d; are IPOs of equity securities. Securities issued in IPOs have no trading history, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and information about the companies may be available for very limited periods. In addition, the prices of securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;sold in IPOs may be highly volatile or may decline shortly after the IPO.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember_OperationalAndTechnologyRisksMember"
      id="t_50_a97b8ca0_93e5_870b_73a2_a42f6bb6d27f"> &lt;div&gt; &lt;div style="clear: both; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Operational and Technology Risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund is directly and indirectly susceptible to operational and technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;risks, including those related to human errors, processing errors, communication errors, systems failures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cybersecurity incidents, and the use of artificial intelligence and machine learning (&#x201c;AI&#x201d;), which may result in losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the Fund and its shareholders or may impair the Fund&#x2019;s operations. While the Fund&#x2019;s service providers are &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;required to have appropriate operational, information security and cybersecurity risk management policies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;procedures, their methods of risk management may differ from those of the Fund. Operational and technology risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the issuers in which the Fund invests could also result in material adverse consequences for such issuers and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may cause the Fund&#x2019;s investments in such issuers to lose value.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
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      contextRef="D20260531_20260531_S000001510Member_ClassKMember_PreferredSecuritiesRiskMember"
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      contextRef="D20260531_20260531_S000001510Member_ClassKMember_PurchaseAndSaleContractsRiskMember"
      id="t_52_b6eee333_0a8d_70dc_809c_ce545653b9d7"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Purchase and Sale Contracts Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; If the other party to a purchase and sale contract defaults on its obligation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;under the agreement, the Fund may suffer delays and incur costs or lose money in exercising its rights under the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;agreement. If the seller fails to repurchase the security and the market value of the security declines, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;lose money.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
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      id="t_53_71ccde0b_25f4_b738_58b5_7ff136cb33d1"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Restricted Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Limitations on the resale, including any required lock up or holding periods, of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;restricted securities may have an adverse effect on their marketability and their liquidity may prevent the Fund from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;disposing of them promptly at advantageous prices, if at all. Restricted securities may not be listed on an exchange &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and may have no active trading market. In order to sell certain restricted securities, the Fund may have to bear the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;expense of registering the securities for resale and the risk of substantial delays in effecting the registration. Other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transaction costs may be higher for restricted securities than unrestricted securities. Restricted securities may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;difficult to value because market quotations may not be readily available, there may be limited other information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;regarding the investment&#x2019;s market or fair value, and the securities values may have significant volatility. Also, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Fund may get only limited information about the issuer of a given restricted security, and therefore may be less able &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to determine the security&#x2019;s market or fair value or assess the investment risks as fully as for other issuers for which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;more information is available. Certain restricted securities may involve a high degree of business and financial risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and may result in substantial losses to the Fund. Certain restricted securities may represent limited investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;opportunities and each shareholder&#x2019;s proportionate investment exposure to such limited investment opportunities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may be reduced proportionately as the Fund&#x2019;s net assets grow from new or additional investments made in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Fund by other shareholders.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
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      id="t_54_c2ae0a68_01c4_6c26_0d74_766ec0ce2d4f"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Small Cap Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Small cap companies may have limited product lines or markets. They may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;financially secure than larger, more established companies. They may depend on a more limited management group &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;than larger capitalized companies.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_31_26766348_b417_47eb_b2a6_b47075e2a20e"> Performance Information </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_55_95e3cf8b_0632_9a9f_16da_a818682bb708"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The information shows you how the Fund&#x2019;s performance has varied year by year and provides some indication of the&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;risks of investing in the Fund. Effective December 30, 2017, the Fund changed its name, investment process and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment strategies. Performance for the periods prior to December 30, 2017, shown below, is based on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment process and investment strategies utilized by the Fund at that time under the name &#x201c;BlackRock Science &amp;amp; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Technology Opportunities Portfolio.&#x201d; Class K Shares commenced operations on December 10, 2019. As a result, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;returns shown below for Class K Shares prior to December 10, 2019 are those of the Fund&#x2019;s Institutional Shares, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;which are not offered in this prospectus. The performance of Class K Shares would be substantially similar to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Institutional Shares because Class K Shares and Institutional Shares are invested in the same portfolio of securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and performance would differ only to the extent that Class K Shares and Institutional Shares have different expenses. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The actual returns of Class K Shares would have been higher than those of Institutional Shares because Class K &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Shares have lower expenses than Institutional Shares. The table compares the Fund&#x2019;s performance to that of the&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;MSCI All Country World Index (Net), the MSCI All-Country World Information Technology 10/40 Index (Net) and the&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;MSCI All-Country World Information Technology Index (Net). The MSCI All-Country World Information Technology 10/40&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;Index (Net) and the MSCI All-Country World Information Technology Index (Net) are relevant to the Fund because they&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;have characteristics similar to the Fund&#x2019;s investment strategy. To the extent that dividends and distributions have been &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;paid by the Fund, the performance information for the Fund in the chart and table assumes reinvestment of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;dividends and distributions. As with all such investments, past performance (before and after taxes) is not an&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;indication of future results. The table includes all applicable fees. If BlackRock and its affiliates had not waived or &lt;/span&gt;&lt;/div&gt;  &lt;div style="line-height: 10.695pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;reimbursed certain Fund expenses during these periods, the Fund&#x2019;s returns would have been lower. Updated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;information on the Fund&#x2019;s performance, including its current net asset value, can be obtained by visiting &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;www.blackrock.com or can be obtained by phone at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(800) 882-0052&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;.&lt;/span&gt;&lt;/div&gt; </oef:PerformanceNarrativeTextBlock>
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      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_57_a7fcf93b_d40f_539b_e9a5_c9b6862795a7">The information shows you how the Fund&#x2019;s performance has varied year by year and provides some indication of the&#160;risks of investing in the Fund.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceAdditionalMarketIndex
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_58_4f5af919_8adb_e498_6727_aa93a4a5105b">The table compares the Fund&#x2019;s performance to that of the&#160;MSCI All Country World Index (Net), the MSCI All-Country World Information Technology 10/40 Index (Net) and the&#160;MSCI All-Country World Information Technology Index (Net). The MSCI All-Country World Information Technology 10/40&#160;Index (Net) and the MSCI All-Country World Information Technology Index (Net) are relevant to the Fund because they&#160;have characteristics similar to the Fund&#x2019;s investment strategy.</oef:PerformanceAdditionalMarketIndex>
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      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_56_65326353_4f40_bcdb_d587_4eafe4ecbb2b">As with all such investments, past performance (before and after taxes) is not an&#160;indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_65_686c60bc_56a7_b029_db5e_aed009e41cbc">www.blackrock.com</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceAvailabilityPhone
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_66_aa895656_6adf_eb06_1032_451d5bd3153b">(800) 882-0052</oef:PerformanceAvailabilityPhone>
    <oef:BarChartHeading
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_59_73dee2d4_d882_2718_65ca_d7bd0eddb7c2"> Class K Shares ANNUAL TOTAL RETURNS BlackRock Technology Opportunities Fund As of 12/31 </oef:BarChartHeading>
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      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_60_6d962009_0be2_491b_43be_6b99325eb101"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;During the ten-year period shown in the bar chart, the highest return for a quarter was 44.20% (quarter ended &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;June 30, 2020) and the lowest return for a quarter was -27.05% (quarter ended June 30, 2022). The year-to-date return as of June 30, 2026 was 42.95%.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      id="t_69_ebc820df_9bb1_83e7_b425_e5fea1a5a775">highest return</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="4"
      id="h_114_34f0b096_7421_bb53_60ca_25950e03f969"
      unitRef="pure">0.4420</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      id="t_70_cb5b5662_184e_31a9_5bbd_8d00aaae9365">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      id="t_71_c5ec3f0a_a6d6_0847_bc87_7be2f09a0615">lowest return</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="4"
      id="h_115_b7a04b0c_178c_4fda_e5a9_268e9ad7b89c"
      unitRef="pure">-0.2705</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      id="t_72_d435c1a8_2ca0_b0e2_442a_ea15444a574a">2022-06-30</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      id="t_67_d8e1a091_5237_a272_e4a7_9725044ba161">year-to-date return</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturnDate
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      id="t_68_a8108737_ff56_3fe3_3ee9_f3a74224dac8">2026-06-30</oef:BarChartYearToDateReturnDate>
    <oef:BarChartYearToDateReturn
      contextRef="D20260531_20260531_S000001510Member_C000216612Member_ClassKMember"
      decimals="4"
      id="h_113_d1c60969_c4d1_b9be_8d6f_45ef9b7fb48e"
      unitRef="pure">0.4295</oef:BarChartYearToDateReturn>
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      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_61_55bd7e2b_76ee_dbf4_459d_5aa6b28c74f0">For the periods ended 12/31/25Average Annual Total Returns</oef:PerformanceTableHeading>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000216612Member_ClassKMember"
      decimals="4"
      id="h_95_ee4f3f2d_be9b_4ea7_a17a_ab366aa2a968"
      unitRef="pure">0.1995</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000216612Member_ClassKMember"
      decimals="4"
      id="h_96_ccbf195f_ae03_4f05_bc2c_e85af73205a0"
      unitRef="pure">0.0845</oef:AvgAnnlRtrPct>
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      contextRef="TenY2025_C000216612Member_ClassKMember"
      decimals="4"
      id="h_97_f51c9402_7c8e_4dd4_804d_08b1481cb271"
      unitRef="pure">0.2097</oef:AvgAnnlRtrPct>
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      contextRef="FY2025_C000216612Member_ClassKMember_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_98_e80bbefb_6dc2_4410_b927_9ee80e331bf4"
      unitRef="pure">0.1648</oef:AvgAnnlRtrPct>
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      contextRef="FiveY2025_C000216612Member_ClassKMember_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_99_a7bda101_915a_4e82_a54b_be6d87c71bd2"
      unitRef="pure">0.0726</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000216612Member_ClassKMember_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_100_d246ba3c_aa2f_450a_8bd4_305cebe63473"
      unitRef="pure">0.1985</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000216612Member_ClassKMember_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_101_f38c276b_f0fe_4fe4_b82f_19eec78fd8af"
      unitRef="pure">0.1378</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000216612Member_ClassKMember_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_102_49882510_fe61_4c15_9e7f_cb8d7e724af4"
      unitRef="pure">0.0650</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000216612Member_ClassKMember_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_103_72c676fd_1d92_4e12_a1eb_2dd11c486955"
      unitRef="pure">0.1788</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_ClassKMember_MSCIAllCountryWorldIndexNetMember"
      decimals="4"
      id="h_104_b419f518_fd86_4886_8b8b_c24cadd09299"
      unitRef="pure">0.2234</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_ClassKMember_MSCIAllCountryWorldIndexNetMember"
      decimals="4"
      id="h_105_4f742d10_f01a_4405_b2a7_ba06bcf467c2"
      unitRef="pure">0.1119</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_ClassKMember_MSCIAllCountryWorldIndexNetMember"
      decimals="4"
      id="h_106_b8be9e81_f8aa_416c_9dee_df409e027d88"
      unitRef="pure">0.1172</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_ClassKMember_MSCIAllCountryWorldInformationTechnology1040IndexNetMember"
      decimals="4"
      id="h_107_b25ab90b_31be_49a5_b89b_afd02f566027"
      unitRef="pure">0.3016</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_ClassKMember_MSCIAllCountryWorldInformationTechnologyIndexNetMember"
      decimals="4"
      id="h_110_d7c70a7e_5ad6_4fb0_9f1a_516498ce9fc8"
      unitRef="pure">0.2637</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_ClassKMember_MSCIAllCountryWorldInformationTechnologyIndexNetMember"
      decimals="4"
      id="h_111_c1b72a31_51f3_410b_a6db_885f49931122"
      unitRef="pure">0.1713</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_ClassKMember_MSCIAllCountryWorldInformationTechnologyIndexNetMember"
      decimals="4"
      id="h_112_2531b872_c9fc_40c4_8e19_241984186b8e"
      unitRef="pure">0.2159</oef:AvgAnnlRtrPct>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_62_8ab55fb1_c1a3_b51b_079d_b7faeb0b1b12"> &lt;div style="margin-top: 12pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;reflect the impact of state and local taxes. Actual after-tax returns depend on the investor&#x2019;s tax situation and may&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_63_28fbe29c_2466_7e46_813e_65ae6e2a230b">After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not&#160;reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="D20260531_20260531_S000001510Member_ClassKMember"
      id="t_64_cfef13c9_8e16_c3a3_3733_dc02247ecc79">Actual after-tax returns depend on the investor&#x2019;s tax situation and may&#160;differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through&#160;tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:RiskReturnHeading
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_34_04390499_4952_4d51_a8df_a2e6b3d3b945"> Fund Overview  Key Facts About BlackRock Technology Opportunities Fund </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_35_3589339b_31ee_4b67_a7d1_87eea39db573">  Investment Objective  </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_36_a9ff1fcb_7662_4187_832e_72d5c5b9dfb3"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The investment objective of BlackRock Technology Opportunities Fund (the &#x201c;Fund&#x201d;), a series of BlackRock Funds&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 5pt; position: relative; top: -3.25pt;"&gt;SM&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;Trust&#x201d;), is to provide long-term capital appreciation.&lt;/span&gt;&lt;/div&gt; </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_37_908ced88_70da_48aa_9e71_eb817b4a1803">  Fees and Expenses of the Fund  </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_38_23b09d1f_849e_44f5_b2eb_d65f9017caf5"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This table describes the fees and expenses that you may pay if you buy, hold and sell Service Shares of the Fund. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Amounts in the table are rounded to the nearest basis point, which in some cases may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;0.00.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;You may pay other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;fees, such as brokerage commissions and other fees to your financial professional or your selected securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;dealer, broker, investment adviser, service provider or industry professional (including BlackRock Advisors, LLC &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;(&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;BlackRock&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;) and its affiliates) (each, a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;Financial Intermediary&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;), which are not reflected in the table and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-weight: bold;"&gt;example below.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_39_9db6e11e_83cb_4cdb_a40d_4e6acf746c3e">  Annual Fund Operating Expenses  (expenses that you pay each year as a  percentage of the value of your investment)  </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_113_9a646699_7c2e_4152_a8aa_d53d72d8ea41"
      unitRef="pure">0.0075</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_114_713469b9_13d1_454b_93bc_9363e681b078"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_115_e27e7e3e_e7df_4d72_9f0e_a4bec8c59cd8"
      unitRef="pure">0.0023</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_116_13a71b3a_0b78_4470_900e_4ae5e2a39563"
      unitRef="pure">0.0123</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_117_5d05d001_db22_4f6c_a96c_309bf953aae3"
      unitRef="pure">-0.0009</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_118_55982706_a724_41b8_8997_d50c776ab3bd"
      unitRef="pure">0.0114</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_50_98a119b9_51e3_85ce_0688_7db9cdac32e1">June 30, 2028</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_40_2e8f24a1_ef92_47e6_a086_93cfb92e175e">  Example:  </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_41_b244cee9_d58d_4846_b16f_a875995a4af5"> &lt;div style="line-height: 10.695pt; margin-top: 0.0pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;or lower, based on these assumptions your costs would be:&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="INF"
      id="h_119_0cc433ec_c2d1_4ada_a7f2_af076fd534f9"
      unitRef="USD">116</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="INF"
      id="h_120_55c2419b_6672_41d6_94dc_e0b0b47ee9db"
      unitRef="USD">381</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="INF"
      id="h_121_8e4a7878_c39a_4e23_904c_565ab79a3ebf"
      unitRef="USD">667</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="INF"
      id="h_122_eb9b9893_d56d_4371_aaeb_78d40daff03d"
      unitRef="USD">1481</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_42_4d4ac4fd_6ae9_4cff_b980_487732a5c827">  Portfolio Turnover:  </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_43_f1ba8c9f_4b7f_4c8a_81e5_8c89826a40ce"> &lt;div style="line-height: 10.695pt; margin-top: 0.0pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;57&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;% of the average value of its portfolio.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      decimals="4"
      id="h_123_8404da32_9e21_45d4_823e_670412465e9a"
      unitRef="pure">0.57</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_44_c9706ca7_f11d_458e_923d_a9eff9cf9d6e"> Principal Investment Strategies of the Fund </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_45_144f48ab_e417_4146_b569_21bc24dafacc"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Under normal market conditions, the Fund invests at least 80% of its net assets, plus the amount of any borrowings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for investment purposes, in equity securities issued by U.S. and non-U.S. technology companies in all market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;capitalization ranges, selected for their rapid and sustainable growth potential from the development, advancement &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and use of technology. Investments in derivatives are counted toward the Fund&#x2019;s 80% policy to the extent that they &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;provide investment exposure to the securities included within that policy or to one or more market risk factors &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;associated with such securities.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Technology companies may include those companies in the businesses of, among others: software, IT consulting, IT &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;services, interactive home entertainment, interactive media and services, networking equipment, telecom services, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;communications equipment, technology hardware, storage and peripherals, electronic equipment, instruments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;components, semiconductors and semiconductor equipment and consumer finance. The Fund may invest in both &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;developed and emerging markets. BlackRock determines, in its discretion, whether a company is a technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund seeks to invest primarily in common stock but may also invest in preferred stock and convertible securities. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may also invest in Rule 144A securities, which are privately placed securities purchased by qualified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;institutional buyers. From time to time the Fund may invest in shares of companies through initial public offerings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(&#x201c;IPOs&#x201d;).&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may, when consistent with the Fund&#x2019;s investment objective, buy or sell options or futures on a security or an &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;index of securities and may buy options on a currency or a basket of currencies, or enter into foreign currency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transactions, including swaps (collectively, commonly known as derivatives). An option is the right to buy or sell a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security or an index of securities at a specific price on or before a specific date. A future is an agreement to buy or sell &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;a security or an index of securities at a specific price on a specific date. A swap is an agreement whereby one party &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exchanges its right to receive or its obligation to pay one type of currency for another party&#x2019;s obligation to pay or its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;right to receive another type of currency in the future or for a period of time. The Fund typically uses derivatives as a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;substitute for taking a position in the underlying asset and/or as part of a strategy designed to reduce exposure to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other risks, such as currency risk. The Fund may also use derivatives to enhance returns, in which case their use &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;would involve leveraging risk. The Fund may seek to obtain market exposure to the securities in which it primarily &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;invests by entering into a series of purchase and sale contracts or by using other investment techniques. The Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may also use forward foreign currency exchange contracts (obligations to buy or sell a currency at a set rate in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;future).&lt;/span&gt;&lt;/div&gt; </oef:StrategyNarrativeTextBlock>
    <fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_90_e9b795a5_e83a_7f1e_7ddc_3c899c25b4f5">Under normal market conditions, the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in equity securities issued by U.S. and non-U.S. technology companies in all market capitalization ranges, selected for their rapid and sustainable growth potential from the development, advancement and use of technology.</fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock>
    <fnd:NmRule35d1TermSlctnCritSmryTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_92_727ab4ce_3198_b440_d1d9_13a49d0671e1">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Technology companies may include those companies in the businesses of, among others: software, IT consulting, IT &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;services, interactive home entertainment, interactive media and services, networking equipment, telecom services, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;communications equipment, technology hardware, storage and peripherals, electronic equipment, instruments and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;components, semiconductors and semiconductor equipment and consumer finance. The Fund may invest in both &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;developed and emerging markets. BlackRock determines, in its discretion, whether a company is a technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company.&lt;/span&gt;&lt;/div&gt;</fnd:NmRule35d1TermSlctnCritSmryTextBlock>
    <fnd:NmRule35d1TermDfnSmryTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_91_ad5abbfa_99de_c24d_ad80_ea3da2162cb6">&lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund seeks to invest primarily in common stock but may also invest in preferred stock and convertible securities. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund may also invest in Rule 144A securities, which are privately placed securities purchased by qualified &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;institutional buyers. From time to time the Fund may invest in shares of companies through initial public offerings &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(&#x201c;IPOs&#x201d;).&lt;/span&gt;&lt;/div&gt;</fnd:NmRule35d1TermDfnSmryTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_RiskLoseMoneyMember"
      id="t_52_59e1fe00_a6ed_e06a_990a_0081912c54fe">You may lose part or all of your&#160;investment in the Fund or your investment may not perform as well as other similar investments.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_EquitySecuritiesRiskMember"
      id="t_53_38f33f29_a118_8556_d98b_4bb8a1c85b65"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Equity Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Stock markets are volatile. The price of equity securities fluctuates based on changes in a &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;company&#x2019;s financial condition and overall market and economic conditions.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_TechnologySecuritiesRiskMember"
      id="t_54_112c05c4_0d6d_8d7a_f042_fac9984775ef"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Technology Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Certain technology-related companies may face special risks that their products or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;services may not prove to be commercially successful. Technology-related companies are also strongly affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;worldwide scientific or technological developments. As a result, their products may rapidly become obsolete. Such &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;companies are also often subject to governmental regulation and may, therefore, be adversely affected by &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;governmental policies. In addition, certain technology-related companies in which the Fund may invest may not &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;currently be profitable and there can be no assurance that such companies will be profitable in the future.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_ConcentrationRiskMember"
      id="t_55_be34b5a6_516a_242a_2e3c_5b174294c68d"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Concentration Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; The Fund&#x2019;s strategy of concentrating in technology and related companies means that its &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;performance will be closely tied to the performance of a particular market segment. The Fund&#x2019;s concentration in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;these companies may present more risks than if it were broadly diversified over numerous industries and sectors of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the economy. A downturn in these companies would have a larger impact on the Fund than on a mutual fund that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;does not concentrate in such companies. At times, the performance of these companies will lag the performance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other industries or the broader market as a whole.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_ConvertibleSecuritiesRiskMember"
      id="t_56_13ed1ae5_647b_1a90_7b62_18147439fd0a"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Convertible Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The market value of a convertible security performs like that of a regular debt &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security; that is, if market interest rates rise, the value of a convertible security usually falls. In addition, convertible &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities are subject to the risk that the issuer will not be able to pay interest, principal or dividends when due, and &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="line-height: 10.695pt; margin-left: 12pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;their market value may change based on changes in the issuer&#x2019;s credit rating or the market&#x2019;s perception of the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuer&#x2019;s creditworthiness. Since it derives a portion of its value from the common stock into which it may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;converted, a convertible security is also subject to the same types of market and issuer risks that apply to the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;underlying common stock, including the potential for increased volatility in the price of the convertible security.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_DerivativesRisksMember"
      id="t_57_f1b35bf6_2cb5_b72b_6912_a2c7694feadf"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Derivatives Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund&#x2019;s use of derivatives may increase its costs, reduce the Fund&#x2019;s returns and/or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;increase volatility. Derivatives involve significant risks, including:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Leverage Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund&#x2019;s use of derivatives can magnify the Fund&#x2019;s gains and losses. Relatively small market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;movements may result in large changes in the value of a derivatives position and can result in losses that greatly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exceed the amount originally invested.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Market Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some derivatives are more sensitive to interest rate changes and market price fluctuations than &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;other securities. The Fund could also suffer losses related to its derivatives positions as a result of unanticipated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;market movements, which losses are potentially unlimited. Finally, BlackRock may not be able to predict correctly &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the direction of securities prices, interest rates and other economic factors, which could cause the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;derivatives positions to lose value.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Counterparty Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Derivatives are also subject to counterparty risk, which is the risk that the other party in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transaction will be unable or unwilling to fulfill its contractual obligation, and the related risks of having concentrated &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exposure to such a counterparty.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Illiquidity Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The possible lack of a liquid secondary market for derivatives and the resulting inability of the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to sell or otherwise close a derivatives position could expose the Fund to losses and could make derivatives more &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;difficult for the Fund to value accurately.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Operational Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The use of derivatives includes the risk of potential operational issues, including documentation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issues, settlement issues, systems failures, inadequate controls and human error.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Legal Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; The risk of insufficient documentation, insufficient capacity or authority of counterparty, or legality or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;enforceability of a contract.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Volatility and Correlation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Volatility is defined as the characteristic of a security, an index or a market to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuate significantly in price within a short time period. A risk of the Fund&#x2019;s use of derivatives is that the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;fluctuations in their values may not correlate with the overall securities markets.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Valuation Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Valuation for derivatives may not be readily available in the market. Valuation may be more difficult &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;in times of market turmoil since many investors and market makers may be reluctant to purchase complex &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;instruments or quote prices for them.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Hedging Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Hedges are sometimes subject to imperfect matching between the derivative and the underlying &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;security, and there can be no assurance that the Fund&#x2019;s hedging transactions will be effective. The use of hedging &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may result in certain adverse tax consequences.&lt;/span&gt;&lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;Tax Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Certain aspects of the tax treatment of derivative instruments, including swap agreements and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;commodity-linked derivative instruments, are currently unclear and may be affected by changes in legislation, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;regulations or other legally binding authority. Such treatment may be less favorable than that given to a direct &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment in an underlying asset and may adversely affect the timing, character and amount of income the Fund &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;realizes from its investments.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_EmergingMarketsRiskMember"
      id="t_58_53e7ffff_2f19_f2e7_225b_6477c00bd3b3"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Emerging Markets Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Emerging markets are riskier than more developed markets because they tend to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;develop unevenly and may never fully develop. Investments in emerging markets may be considered speculative. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Emerging markets are more likely to experience hyperinflation and currency devaluations, which adversely affect &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;returns to U.S. investors. In addition, many emerging financial markets have far lower trading volumes and less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;liquidity than developed markets.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_ForeignSecuritiesRiskMember"
      id="t_59_771103a5_0fd0_49fc_dbc4_cfd980fdc9c4"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Foreign Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Foreign investments often involve special risks not present in U.S. investments that can &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;increase the chances that the Fund will lose money. These risks include:&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund generally holds its foreign securities and cash in foreign banks and securities depositories, which may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;be recently organized or new to the foreign custody business and may be subject to only limited or no regulatory &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;oversight.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Changes in foreign currency exchange rates can affect the value of the Fund&#x2019;s portfolio.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The economies of certain foreign markets may not compare favorably with the economy of the United States with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;respect to such issues as growth of gross national product, reinvestment of capital, resources and balance of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;payments position.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The governments of certain countries, or the U.S. Government with respect to certain countries, may prohibit or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;impose substantial restrictions through capital controls and/or sanctions on foreign investments in the capital &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;markets or certain industries in those countries, which may prohibit or restrict the ability to own or transfer &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;currency, securities, derivatives or other assets.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Many foreign governments do not supervise and regulate stock exchanges, brokers and the sale of securities to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the same extent as does the United States and may not have laws to protect investors that are comparable to &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;U.S. securities laws.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Settlement and clearance procedures in certain foreign markets may result in delays in payment for or delivery of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;securities not typically associated with settlement and clearance of U.S. investments.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; margin-left: 12pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 493.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The Fund&#x2019;s claims to recover foreign withholding taxes may not be successful, and if the likelihood of recovery of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;foreign withholding taxes materially decreases, due to, for example, a change in tax regulation or approach in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;foreign country, accruals in the Fund&#x2019;s net asset value for such refunds may be written down partially or in full, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;which will adversely affect the Fund&#x2019;s net asset value.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_GeographicConcentrationRisksMember"
      id="t_60_02d8f570_c55e_37cf_664a_af9ba319c8c6"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Geographic Concentration Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; From time to time the Fund may invest a substantial amount of its assets in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers located in a single country or a limited number of countries. If the Fund concentrates its investments in this &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;manner, it assumes the risk that economic, political and social conditions in those countries will have a significant &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;impact on its investment performance. The Fund&#x2019;s investment performance may also be more volatile if it &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;concentrates its investments in certain countries, especially emerging market countries.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_InvestmentStyleRiskMember"
      id="t_61_8e805795_5830_c7b7_f24e_b716a1655962"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Investment Style Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Under certain market conditions, growth investments have performed better during the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;later stages of economic expansion. Therefore, this investment style may over time go in and out of favor. At times &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;when the investment style used by the Fund is out of favor, the Fund may underperform other equity funds that use &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;different investment styles.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_LeverageRiskMember"
      id="t_62_83314f06_3529_4d54_b583_d81a1be45e8d"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Leverage Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x2014; Some transactions may give rise to a form of economic leverage. These transactions may include, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;among others, derivatives, and may expose the Fund to greater risk and increase its costs. The use of leverage may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cause the Fund to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to meet the applicable requirements of the Investment Company Act of 1940, as amended (the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201c;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Company Act&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x201d;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;), and the rules thereunder. Increases and decreases in the value of the Fund&#x2019;s portfolio will be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;magnified when the Fund uses leverage.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_MarketRiskAndSelectionRiskMember"
      id="t_63_b86c1e7e_2360_0ccf_e51b_dd5c9da9e511"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.0pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Market Risk and Selection Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; Market risk is the risk that one or more markets in which the Fund invests will &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;go down in value, including the possibility that the markets will go down sharply and unpredictably. An investor could &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;lose money over short periods due to fluctuation in the Fund&#x2019;s net asset value in response to short-term market &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;movements and over longer periods during market downturns. Securities or other investments held by the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;underperform the markets, the relevant indices or benchmarks, or the securities selected by other funds with &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;similar investment objectives and investment strategies, or may otherwise fail to perform as intended. The value of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;a security or other asset may decline due to changes in general market conditions, economic trends or events that &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;are not specifically related to the issuer of the security or other asset, or factors that affect a particular issuer or &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;issuers, exchange, country, group of countries, region, market, industry, group of industries, sector or asset class. &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The success of a Fund&#x2019;s activities could be affected by interest rates, availability of credit, inflation rates, economic &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;uncertainty, changes in laws, tariffs and trade barriers, supply chain disruptions, economic sanctions, currency &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;exchange controls, and local, regional or global events such as war, acts of terrorism, natural and environmental &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;disasters, the spread of infectious illness or other public health issues, recessions, or other events.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="margin-top: 4pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Recent policy initiatives undertaken by the U.S. government have the potential to impact international relations, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;trade agreements and the overall regulatory environment in ways that could create uncertainty and instability in &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;domestic and global markets, and could adversely affect the investment performance of the Fund. In particular, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;actions taken by the U.S. government in respect of international trade relations could lead to trade wars, increased &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;costs for imported goods, disruptions in supply chains, reduced foreign investment, and instability in regions where &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the Fund invests.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_MidCapSecuritiesRiskMember"
      id="t_64_c8216f69_323f_c8b6_6bea_289467317572"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Mid Cap Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The securities of mid cap companies generally trade in lower volumes and are generally &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;subject to greater and less predictable price changes than the securities of larger capitalization companies.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_NewIssuesRiskMember"
      id="t_65_5a5609c2_091f_2345_5d92_eaafb2dcbd12"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;&#x201c;New Issues&#x201d; Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; &#x201c;New issues&#x201d; are IPOs of equity securities. Securities issued in IPOs have no trading history, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and information about the companies may be available for very limited periods. In addition, the prices of securities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;sold in IPOs may be highly volatile or may decline shortly after the IPO.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember_OperationalAndTechnologyRisksMember"
      id="t_66_88088043_898c_b142_81d6_a209d614aeb2"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Operational and Technology Risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; The Fund is directly and indirectly susceptible to operational and technology &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;risks, including those related to human errors, processing errors, communication errors, systems failures, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;cybersecurity incidents, and the use of artificial intelligence and machine learning (&#x201c;AI&#x201d;), which may result in losses &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the Fund and its shareholders or may impair the Fund&#x2019;s operations. While the Fund&#x2019;s service providers are &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt;  &lt;div style="line-height: 10.695pt; margin-left: 12pt; text-align: left;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;required to have appropriate operational, information security and cybersecurity risk management policies and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;procedures, their methods of risk management may differ from those of the Fund. Operational and technology risks &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;for the issuers in which the Fund invests could also result in material adverse consequences for such issuers and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may cause the Fund&#x2019;s investments in such issuers to lose value.&lt;/span&gt;&lt;/div&gt; </oef:RiskTextBlock>
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      contextRef="D20260531_20260531_S000001510Member_ServicesMember_PreferredSecuritiesRiskMember"
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      id="t_68_aeb7f953_196e_734e_8992_8d731abdddb0"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Purchase and Sale Contracts Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#x2014; If the other party to a purchase and sale contract defaults on its obligation &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;under the agreement, the Fund may suffer delays and incur costs or lose money in exercising its rights under the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;agreement. If the seller fails to repurchase the security and the market value of the security declines, the Fund may &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;lose money.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
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      id="t_69_5411cfe0_3b98_8fb3_b6a4_ffa723857977"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Restricted Securities Risk&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Limitations on the resale, including any required lock up or holding periods, of &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;restricted securities may have an adverse effect on their marketability and their liquidity may prevent the Fund from &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;disposing of them promptly at advantageous prices, if at all.. Restricted securities may not be listed on an exchange &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and may have no active trading market. In order to sell certain restricted securities, the Fund may have to bear the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;expense of registering the securities for resale and the risk of substantial delays in effecting the registration. Other &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;transaction costs may be higher for restricted securities than unrestricted securities. Restricted securities may be &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;difficult to value because market quotations may not be readily available, there may be limited other information &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;regarding the investment&#x2019;s market or fair value, and the securities values may have significant volatility. Also, the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Fund may get only limited information about the issuer of a given restricted security, and therefore may be less able &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;to determine the security&#x2019;s market or fair value or assess the investment risks as fully as for other issuers for which &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;more information is available. Certain restricted securities may involve a high degree of business and financial risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;and may result in substantial losses to the Fund. Certain restricted securities may represent limited investment &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;opportunities and each shareholder&#x2019;s proportionate investment exposure to such limited investment opportunities &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;may be reduced proportionately as the Fund&#x2019;s net assets grow from new or additional investments made in the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Fund by other shareholders.&lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
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      id="t_70_8b0ae636_d5f5_18b7_0959_64a07aac9a42"> &lt;div&gt; &lt;div style="clear: both; margin-top: 4.805pt; position: relative; width: 100%;"&gt; &lt;div style="float: left; line-height: 9.87pt; text-align: left; width: 8pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 8.37pt; position: relative; top: -0.5pt;"&gt;&#x25fc;&lt;/span&gt;&lt;/div&gt; &lt;div style="float: left; line-height: 10.80pt; margin-left: 4pt; text-align: left; width: 505.00pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic; font-weight: bold;"&gt;Small Cap Securities Risk &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; font-style: italic;"&gt;&#x2014;&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt; Small cap companies may have limited product lines or markets. They may be less &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;financially secure than larger, more established companies. They may depend on a more limited management group &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;than larger capitalized companies.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt; line-height: 10.695pt;"&gt; &lt;/span&gt;&lt;/div&gt; &lt;/div&gt; &lt;div style="clear: both; position: relative;"&gt; &lt;/div&gt; &lt;/div&gt; </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_47_f159f2ee_d701_4020_a29f_db377ac10532"> Performance Information </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_71_107c688d_dda4_40e7_0760_a296534032f4"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;The information shows you how the Fund&#x2019;s performance has varied year by year and provides some indication of the&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;risks of investing in the Fund. Effective December 30, 2017, the Fund changed its name, investment process and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment strategies. Performance for the periods prior to December 30, 2017, shown below, is based on the &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;investment process and investment strategies utilized by the Fund at that time under the name &#x201c;BlackRock Science &amp;amp; &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Technology Opportunities Portfolio.&#x201d; The table compares the Fund&#x2019;s performance to that of the MSCI All Country World&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;Index (Net), the MSCI All-Country World Information Technology 10/40 Index (Net) and the MSCI All-Country World&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;Information Technology Index (Net). The MSCI All-Country World Information Technology 10/40 Index (Net) and the&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;MSCI All-Country World Information Technology Index (Net) are relevant to the Fund because they have characteristics&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;similar to the Fund&#x2019;s investment strategy. To the extent that dividends and distributions have been paid by the Fund, &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;the performance information for the Fund in the chart and table assumes reinvestment of the dividends and &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;distributions. As with all such investments, past performance (before and after taxes) is not an indication of future&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;&#160;results. The table includes all applicable fees. If BlackRock and its affiliates had not waived or reimbursed certain &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;Fund expenses during these periods, the Fund&#x2019;s returns would have been lower. Updated information on the Fund&#x2019;s &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;performance, including its current net asset value, can be obtained by visiting www.blackrock.com or can be obtained &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;by phone at &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;(800) 882-0052&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;.&lt;/span&gt;&lt;/div&gt; </oef:PerformanceNarrativeTextBlock>
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      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_73_9ef1f5a9_482a_fb11_f1d1_1ce9004c330b">The information shows you how the Fund&#x2019;s performance has varied year by year and provides some indication of the&#160;risks of investing in the Fund.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerformanceAdditionalMarketIndex
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_74_b4a42f3c_994c_c3d2_b6d0_180da7e3a377">The table compares the Fund&#x2019;s performance to that of the MSCI All Country World&#160;Index (Net), the MSCI All-Country World Information Technology 10/40 Index (Net) and the MSCI All-Country World&#160;Information Technology Index (Net). The MSCI All-Country World Information Technology 10/40 Index (Net) and the&#160;MSCI All-Country World Information Technology Index (Net) are relevant to the Fund because they have characteristics&#160;similar to the Fund&#x2019;s investment strategy.</oef:PerformanceAdditionalMarketIndex>
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      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_72_62980268_f553_ad5c_a4c0_e92992644d2c">As with all such investments, past performance (before and after taxes) is not an indication of future&#160;results.</oef:PerformancePastDoesNotIndicateFuture>
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      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_76_e32cfc22_ad85_01cd_63c2_b728775b71d1">www.blackrock.com</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceAvailabilityPhone
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_75_df5e0009_9d00_1b72_2e9e_b54b80713c06">(800) 882-0052</oef:PerformanceAvailabilityPhone>
    <oef:BarChartHeading
      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_77_7c838603_bf32_9f1d_30fd_0943103ab794"> Service Shares ANNUAL TOTAL RETURNS BlackRock Technology Opportunities Fund As of 12/31 </oef:BarChartHeading>
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      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_78_9309295d_ef87_4e7d_eb14_e743ad0bdf49"> &lt;div style="margin-top: 6pt;"&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;During the ten-year period shown in the bar chart, the highest return for a quarter was 44.11% (quarter ended &lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 9.30pt;"&gt;June 30, 2020) and the lowest return for a quarter was -27.10% (quarter ended June 30, 2022). The year-to-date return as of June 30, 2026 was 42.73%.&lt;/span&gt;&lt;span style="color: #000000; font-family: arial; font-size: 1pt; line-height: 0.93pt;"&gt;&#x2003;&lt;/span&gt;&lt;/div&gt; </oef:BarChartClosingTextBlock>
    <oef:HighestQuarterlyReturnLabel
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      id="t_85_71efc7ac_2d27_fa29_212d_e232a3cd92f5">highest return</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_143_3837ca57_d772_d1ff_ee2e_1ab56ca70075"
      unitRef="pure">0.4411</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      id="t_86_97700ed9_68d2_52a7_7fc9_d9c15d107734">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      id="t_87_b0c9010e_b24a_eb7d_9861_609d7fb79b06">lowest return</oef:LowestQuarterlyReturnLabel>
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      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_144_e441a487_fbe0_00f8_67fd_610cded1d1c2"
      unitRef="pure">-0.2710</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      id="t_88_85ee2c2d_ec97_c876_d2ae_5102c6af7403">2022-06-30</oef:BarChartLowestQuarterlyReturnDate>
    <oef:YearToDateReturnLabel
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      id="t_83_4f4885b4_57ca_2b56_8163_a5b14cecbf47">year-to-date return</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturnDate
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      id="t_84_e37609a5_e76a_f40c_bc20_ac16dbce95c7">2026-06-30</oef:BarChartYearToDateReturnDate>
    <oef:BarChartYearToDateReturn
      contextRef="D20260531_20260531_S000001510Member_C000004063Member_ServicesMember"
      decimals="4"
      id="h_142_ca5763c0_4d03_bc8b_34cd_558ff12ac767"
      unitRef="pure">0.4273</oef:BarChartYearToDateReturn>
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      contextRef="D20260531_20260531_S000001510Member_ServicesMember"
      id="t_79_71f82b4e_0064_aea6_5eed_8dae63865152">For the periods ended 12/31/25Average Annual Total Returns</oef:PerformanceTableHeading>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000004063Member_ServicesMember"
      decimals="4"
      id="h_124_6ce3bc08_c7c6_489f_8217_e6578ed5e562"
      unitRef="pure">0.1954</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000004063Member_ServicesMember"
      decimals="4"
      id="h_125_16a13b9c_71d9_431b_81c7_ce8e0472cb71"
      unitRef="pure">0.0810</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000004063Member_ServicesMember"
      decimals="4"
      id="h_126_eee2eddf_89cf_495e_b43e_b991a782a66c"
      unitRef="pure">0.2062</oef:AvgAnnlRtrPct>
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      contextRef="FY2025_C000004063Member_ServicesMember_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_127_6b90497f_84d3_4360_84e6_b13a138f2f2a"
      unitRef="pure">0.1585</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000004063Member_ServicesMember_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_128_ae48c44e_d82a_4de3_8ac5_192f6676b02d"
      unitRef="pure">0.0684</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000004063Member_ServicesMember_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_129_69906bed_46c5_4ce5_adbe_a3e1ac7da077"
      unitRef="pure">0.1945</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000004063Member_ServicesMember_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_130_3f5206b6_8f63_4252_a574_caa350c1c617"
      unitRef="pure">0.1370</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000004063Member_ServicesMember_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_131_e7a0ce64_5912_4300_bd49_3a7258e4204b"
      unitRef="pure">0.0621</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000004063Member_ServicesMember_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_132_d2f0367e_fc1c_4eb3_ac29_b83ab5440205"
      unitRef="pure">0.1755</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_ServicesMember_MSCIAllCountryWorldIndexNetMember"
      decimals="4"
      id="h_133_7e5a3380_ab13_44a3_a7b7_8475c8c25615"
      unitRef="pure">0.2234</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_ServicesMember_MSCIAllCountryWorldIndexNetMember"
      decimals="4"
      id="h_134_15b80180_d5c7_4eff_b18a_cce7dd844bc4"
      unitRef="pure">0.1119</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_ServicesMember_MSCIAllCountryWorldIndexNetMember"
      decimals="4"
      id="h_135_472593fb_ee42_4eb9_a29a_cd94572c56af"
      unitRef="pure">0.1172</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_ServicesMember_MSCIAllCountryWorldInformationTechnology1040IndexNetMember"
      decimals="4"
      id="h_136_1f4e76c7_c9ce_42ba_8ce2_0e6ffe9bbfd7"
      unitRef="pure">0.3016</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_ServicesMember_MSCIAllCountryWorldInformationTechnologyIndexNetMember"
      decimals="4"
      id="h_139_529c46fd_6f6c_4a0a_9a03_8fae7e4c0227"
      unitRef="pure">0.2637</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_ServicesMember_MSCIAllCountryWorldInformationTechnologyIndexNetMember"
      decimals="4"
      id="h_140_a1b76b04_d6e9_495d_a280_e5ad08fb0cc5"
      unitRef="pure">0.1713</oef:AvgAnnlRtrPct>
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      contextRef="TenY2025_ServicesMember_MSCIAllCountryWorldInformationTechnologyIndexNetMember"
      decimals="4"
      id="h_141_b42732b7_f3c2_48a5_a7a1_7c42be2f85db"
      unitRef="pure">0.2159</oef:AvgAnnlRtrPct>
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