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      id="h_61_2a615db8_de5e_b09d_8ac9_e1efe6251ad1"
      unitRef="pure"
      xsi:nil="true"/>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_CustomizedReferenceBenchmarkMember"
      id="h_74_80fb8c9a_6b9e_4ab9_b11e_03040eadd762"
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      xsi:nil="true"/>
    <dei:EntityCentralIndexKey
      contextRef="DefaultContext"
      id="h1_51530f36_c8c1_4755_83d0_b03bacb10e9e">0000799113</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="DefaultContext"
      id="h3_f21e7cc5_bf61_4ed9_ba46_4d46c3c8c74c">false</dei:AmendmentFlag>
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      contextRef="DefaultContext"
      id="h_1_13fb96d0-0687-475d-0762-ecae62f734bf">N-1A</dei:EntityInvCompanyType>
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      contextRef="DefaultContext"
      id="t_1_ef1b9605_7171_8df8_5b23_d0456ef703c7">N-CSRS</dei:DocumentType>
    <dei:EntityRegistrantName
      contextRef="DefaultContext"
      id="t_1_b9416588_41b2_58df_85a6_3d8fa8994f69">BlackRock Municipal Series Trust</dei:EntityRegistrantName>
    <dei:DocumentPeriodEndDate
      contextRef="DefaultContext"
      id="t_2_4dc7ad90_ead6_5a5e_007c_e78483aa9037">2024-11-30</dei:DocumentPeriodEndDate>
    <oef:FundName
      contextRef="D20240531_20241130_C000011342Member"
      id="t_1_186abfcf_bbbb_72d5_bd9b_c1ad95372332">BlackRock Strategic Municipal Opportunities Fund</oef:FundName>
    <oef:ClassName
      contextRef="D20240531_20241130_C000011342Member"
      id="t_2_8ac53de7_d0dc_219e_1924_a5734f4e97c1">Institutional Shares</oef:ClassName>
    <dei:TradingSymbol
      contextRef="D20240531_20241130_C000011342Member"
      id="t_3_1275307f_82b4_4c9a_c43c_1d63400c841e">MAMTX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="D20240531_20241130_C000011342Member"
      id="t_5_92eab46c_efb0_4b75_54cc_aac78b0e43de">This semi-annual shareholder report contains important information about BlackRock Strategic Municipal Opportunities Fund (the &#x201c;Fund&#x201d;) for the period of June 1, 2024 to November 30, 2024.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="D20240531_20241130_C000011342Member"
      id="t_4_8e06781e_53b2_9fc5_df42_b02929957afd">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="D20240531_20241130_C000011342Member"
      id="t_6_67f50d32_1e84_af41_8017_e5a8b7f0d7cc">You can find additional information about the Fund at &lt;span style="color: #000000; font-weight: bold; text-decoration-line: none; font-family: 'arial'; font-size: 8pt; line-height: 10.4pt; text-align: justify;"&gt;blackrock.com/fundreports&lt;/span&gt;. You can also request this information by contacting us at (800) 441&#x2011;7762.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="D20240531_20241130_C000011342Member"
      id="t_7_563fef8c_1abc_8d4b_d6ee_8c749a059d46">blackrock.com/fundreports</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="D20240531_20241130_C000011342Member"
      id="t_8_4bb79545_8ddc_6cf8_6836_090c1df73b0b">(800) 441&#x2011;7762</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="D20240531_20241130_C000011342Member"
      id="t_9_d663d518_22dd_f8a6_fff8_197841cb5c33"> &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-weight: bold; font-size: 10pt; color: #000000; margin-bottom: -0.18pt;"&gt;&lt;b&gt;What were the &lt;/b&gt; &lt;b&gt;Fund&lt;/b&gt; &lt;b&gt; costs for the &lt;/b&gt; &lt;b&gt;last six months&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;  &lt;div style="margin-top: 0px; margin-bottom: 0px; font-kerning: none; font-family: 'arial'; font-size: 9pt; color: #000000;"&gt;(based on a hypothetical $10,000 investment)&lt;/div&gt;
&lt;table style="break-inside: avoid-page; margin-top: 2pt; table-layout: auto; width: 100%; border-collapse: collapse;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: left; padding: 2pt 0 2pt 0;"&gt;Class name&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: center; padding: 2pt 0 2pt 0;"&gt;Costs of a $10,000&lt;br/&gt;investment&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: center; padding: 2pt 0 2pt 0;"&gt;Costs paid as a percentage of a&lt;br/&gt;$10,000 investment&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; overflow-x: hidden; font-size: 8pt; line-height: 10pt; text-align: left; padding: 4pt 0 2pt 0;"&gt;Institutional Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: center; font-size: 8pt; line-height: 10pt; padding: 4pt 0 2pt 0;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;36&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; text-align: center; font-size: 8pt; line-height: 10pt; padding: 4pt 0 2pt 0;"&gt;0.71&lt;span&gt;%&lt;/span&gt;&lt;sup&gt;(a)&lt;/sup&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="break-inside: avoid-page; margin-top: 2pt; table-layout: auto; width: 100%; border-collapse: collapse;"&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; text-indent: 0; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; text-indent: 0; width: 100%; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Annualized.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="D20240531_20241130_C000011342Member"
      decimals="INF"
      id="h_1_821f7dfe_712c_463f_8d96_67efa1841e49"
      unitRef="USD">36</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="D20240531_20241130_C000011342Member"
      decimals="4"
      id="h_2_3157a688_dd17_48a3_a994_d2c6f58e502f"
      unitRef="pure">0.0071</oef:ExpenseRatioPct>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="D20240531_20241130_C000011342Member"
      id="t_10_7097dfdb_8d6f_8be3_3869_98915360b645">
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;" title="oef:AvgAnnlRtrTableTextBlock"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; width: auto; font-family: 'Arial'; font-weight: bold; font-style: normal; font-size: 10pt; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;Average annual total returns&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: 60%; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;6-Month&lt;br/&gt;Total&lt;br/&gt;Returns&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;1 Year&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;5 Years&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;10 Years&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Institutional Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.76&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;7.12&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;0.89&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;2.50&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Bloomberg Municipal Bond Index&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.54&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.93&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;1.35&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;2.45&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 6pt;"&gt;Customized Reference Benchmark&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;4.94&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;6.41&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;1.67&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;&lt;span class="sec-hidden" style="-sec-ix-hidden: h_29_b117abc0_da1a_518e_09ec_570b7106be76;" title="Manually tagged"&gt;N/A&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AvgAnnlRtrTableTextBlock>
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      id="h_5_8fa08a4d_0fa1_414d_baf8_9ae3f17ac907"
      unitRef="pure">0.0089</oef:AvgAnnlRtrPct>
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      id="h_9_7c99bd00_5164_4c37_bb42_935ef2c4cf19"
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      id="h_10_8e0fcdb8_5788_42ef_83bc_6d688fd89a3c"
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      id="t_18_f4dff53e_c1f1_bd28_74fd_d5f2de106836">Customized Reference Benchmark</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
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      unitRef="pure">0.0494</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      id="h_12_460ff902_2a4b_4a60_bb06_77c6d0bf63ec"
      unitRef="pure">0.0641</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_CustomizedReferenceBenchmarkMember"
      decimals="4"
      id="h_13_e7145c89_5c96_4661_b78d_54e707e7e3ba"
      unitRef="pure">0.0167</oef:AvgAnnlRtrPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="D20240531_20241130_C000011342Member"
      id="t_11_6a9d38e2_a225_483c_a081_296ff9fa7aa6">
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; width: auto; font-family: 'Arial'; font-weight: bold; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;Key Fund statistics&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 0 6pt;"&gt;Net Assets&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;3,952,789,242&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 0 6pt;"&gt;Number of Portfolio Holdings&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;618&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 1.6pt 6pt;"&gt;Portfolio Turnover Rate&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 1.6pt 6pt;"&gt;20&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20241130_C000011342Member"
      decimals="INF"
      id="h_15_33b0cb66_642a_4567_933c_05968ae6dd79"
      unitRef="USD">3952789242</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20241130_C000011342Member"
      decimals="INF"
      id="h_16_46da9fe6_d98a_4919_acb9_ab981831421c"
      unitRef="Holding">618</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="D20240531_20241130_C000011342Member"
      decimals="4"
      id="h_17_9f56e0a4_d257_4a31_aff5_81b050f4994f"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="D20240531_20241130_C000011342Member"
      id="t_12_f75f7cab_1ec5_bebe_3091_699444b2b34f">Past performance is not an indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="D20240531_20241130_C000011342Member"
      id="t_13_009b7fb6_75a6_4632_87ee_61da31f9a2c9">Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="D20240531_20241130_C000011342Member"
      id="t_14_6959b579_26e1_4f67_ca19_f6342ccc9ec8">Visit &lt;span style="color: #000000; font-weight: bold; text-decoration-line: none; font-family: 'arial'; font-size: 8pt; line-height: 10.4pt; text-align: justify;"&gt;blackrock.com&lt;/span&gt; for more recent performance information.</oef:UpdPerfInfoLocationTextBlock>
    <oef:HoldingsTableTextBlock
      contextRef="D20240531_20241130_C000011342Member"
      id="t_15_fe5b23d6_9274_232a_fcc1_d27402ec1f51"> &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-weight: bold; font-size: 10pt; color: #000000; margin-bottom: -0.18pt;"&gt;What did the Fund invest in?&lt;/div&gt;  &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; text-align: justify; font-size: 9pt; line-height: 11.4pt; color: #000000; margin-bottom: 0px;"&gt;(as of November 30, 2024)&lt;/div&gt;
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td colspan="3" style="break-inside: avoid-page; vertical-align: bottom; white-space: nowrap; width: auto; font-family: 'Arial'; font-weight: normal; font-style: normal; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;&lt;strong&gt;Sector&lt;/strong&gt;&lt;strong&gt; allocation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-weight: normal; text-align: left; text-indent: -6pt; width: auto; padding: 1.6pt 0 0 6pt;"&gt;&lt;em&gt;Sector&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/em&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; padding: 1.6pt 0 0 6pt;"&gt;&lt;em&gt;Percent of Total&lt;br/&gt;Investments&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/em&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; padding: 1.6pt 0 0 6pt;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Utilities&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;23.2&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;County/City/Special District/School District&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;19.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Transportation&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;14.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;State&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;11.6&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Corporate&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;11.1&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Health&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;6.2&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Education&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.9&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Housing&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.3&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Tobacco&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;2.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Commercial Services &amp;amp; Supplies&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;0.7&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 1.6pt 6pt;"&gt;Other&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;*&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 1.6pt 0;"&gt;0.6&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td colspan="3" style="break-inside: avoid-page; vertical-align: bottom; white-space: nowrap; width: auto; font-family: 'Arial'; font-weight: normal; font-style: normal; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 6pt 1.5pt 0;"&gt;&lt;strong&gt;Credit quality allocation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Credit Rating&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(c)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; padding: 1.6pt 0 0 0;"&gt;Percent of Total&lt;br/&gt;Investments&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;AAA/Aaa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;14.2&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;AA/Aa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;41.7&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;A&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;15.5&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;BBB/Baa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.0&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;BB/Ba&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;2.7&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;B&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;0.4&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 1.6pt 6pt;"&gt;N/R&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(d)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 1.6pt 0;"&gt;21.5&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="border-collapse: collapse; break-inside: avoid-page; width: 100%; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; vertical-align: top; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; width: initial; text-indent: 0; color: #000000; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; text-indent: 0; color: #000000; width: 100%; padding: 1.6pt 0 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;For purposes of this report, sector sub-classifications may differ from those utilized by the Fund for compliance purposes.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Excludes short-term securities.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(c)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&amp;amp;P Global Ratings or Moody&#x2019;s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(d)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors and individual investments. Using this approach, the investment adviser has deemed certain of these unrated securities as investment grade quality. As of November 30, 2024, the market value of unrated securities deemed by the investment adviser to be investment grade represents less than 1.0% of&#160;total investments.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
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&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;*&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
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      contextRef="D20240531_20241130_C000011342Member"
      id="t_19_984a359d_b4d0_420e_db6c_40673b717a82">For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&amp;amp;P Global Ratings or Moody&#x2019;s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.</oef:CreditRatingsSelectionTextBlock>
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      contextRef="D20240531_20241130_C000011342Member"
      id="t_20_7dc0fbde_1a1d_35d4_2a22_be44baeb1f02">The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors and individual investments. Using this approach, the investment adviser has deemed certain of these unrated securities as investment grade quality. As of November 30, 2024, the market value of unrated securities deemed by the investment adviser to be investment grade represents less than 1.0% of&#160;total investments.</oef:CreditQualityExplanationTextBlock>
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      contextRef="D20240531_20241130_C000038983Member"
      id="t_1_f9bcbed6_9d36_68b8_9677_05a9ae6a1af9">BlackRock Strategic Municipal Opportunities Fund</oef:FundName>
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      contextRef="D20240531_20241130_C000038983Member"
      id="t_4_ba55dda8_353c_008b_f287_da410ec58ce2">This semi-annual shareholder report contains important information about BlackRock Strategic Municipal Opportunities Fund (the &#x201c;Fund&#x201d;) for the period of June 1, 2024 to November 30, 2024.</oef:AnnlOrSemiAnnlStatementTextBlock>
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      contextRef="D20240531_20241130_C000038983Member"
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      contextRef="D20240531_20241130_C000038983Member"
      id="t_6_39123432_e1ff_b336_6d60_ac6fa9be60ce">You can find additional information about the Fund at &lt;span style="color: #000000; font-weight: bold; text-decoration-line: none; font-family: 'arial'; font-size: 8pt; line-height: 10.4pt; text-align: justify;"&gt;blackrock.com/fundreports&lt;/span&gt;. You can also request this information by contacting us at (800) 441&#x2011;7762.</oef:AddlInfoTextBlock>
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      contextRef="D20240531_20241130_C000038983Member"
      id="t_9_91766240_ef82_c815_b945_d3c645a92550"> &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-weight: bold; font-size: 10pt; color: #000000; margin-bottom: -0.18pt;"&gt;&lt;b&gt;What were the &lt;/b&gt; &lt;b&gt;Fund&lt;/b&gt; &lt;b&gt; costs for the &lt;/b&gt; &lt;b&gt;last six months&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;  &lt;div style="margin-top: 0px; margin-bottom: 0px; font-kerning: none; font-family: 'arial'; font-size: 9pt; color: #000000;"&gt;(based on a hypothetical $10,000 investment)&lt;/div&gt;
&lt;table style="break-inside: avoid-page; margin-top: 2pt; table-layout: auto; width: 100%; border-collapse: collapse;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: left; padding: 2pt 0 2pt 0;"&gt;Class name&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: center; padding: 2pt 0 2pt 0;"&gt;Costs of a $10,000&lt;br/&gt;investment&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: center; padding: 2pt 0 2pt 0;"&gt;Costs paid as a percentage of a&lt;br/&gt;$10,000 investment&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; overflow-x: hidden; font-size: 8pt; line-height: 10pt; text-align: left; padding: 4pt 0 2pt 0;"&gt;Investor A Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: center; font-size: 8pt; line-height: 10pt; padding: 4pt 0 2pt 0;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;46&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; text-align: center; font-size: 8pt; line-height: 10pt; padding: 4pt 0 2pt 0;"&gt;0.90&lt;span&gt;%&lt;/span&gt;&lt;span style="vertical-align: 0.5em; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/span&gt;&lt;sup style="vertical-align: 0.5em; font-size: smaller; line-height: 0px;"&gt;&lt;/sup&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="break-inside: avoid-page; margin-top: 2pt; table-layout: auto; width: 100%; border-collapse: collapse;"&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; text-indent: 0; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; text-indent: 0; width: 100%; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Annualized.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:ExpensesTextBlock>
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&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;" title="oef:AvgAnnlRtrTableTextBlock"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; width: auto; font-family: 'Arial'; font-weight: bold; font-style: normal; font-size: 10pt; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;Average annual total returns&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: 60%; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;6-Month&lt;br/&gt;Total&lt;br/&gt;Returns&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;1 Year&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;5 Years&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;10 Years&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Investor A Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.66&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;6.91&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;0.66&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;2.28&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Investor A Shares (with sales charge)&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;0.21&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;2.37&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;(0.21&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;)&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;1.84&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Bloomberg Municipal Bond Index&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.54&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.93&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;1.35&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;2.45&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 6pt;"&gt;Customized Reference Benchmark&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;4.94&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;6.41&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;1.67&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;&lt;span class="sec-hidden" style="-sec-ix-hidden: h_61_2a615db8_de5e_b09d_8ac9_e1efe6251ad1;" title="Manually tagged"&gt;N/A&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AvgAnnlRtrTableTextBlock>
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      unitRef="pure">0.0466</oef:AvgAnnlRtrPct>
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      id="h_32_9deb24ec_e576_4adc_a6f0_9c1a39fa5414"
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      id="h_33_20c9aa92_818a_4b04_a82a_cc59e3dbca0d"
      unitRef="pure">0.0066</oef:AvgAnnlRtrPct>
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      id="h_34_83941114_a651_43b6_aa59_d03a34a21e26"
      unitRef="pure">0.0228</oef:AvgAnnlRtrPct>
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      id="t_19_29a44a46_63ae_4eef_93e9_e05897556e36">Investor A Shares (with sales charge)</oef:LineGraphAndTableMeasureName>
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      id="h_35_97326024_b59d_4be0_8733_c9606e290c54"
      unitRef="pure">0.0021</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_36_deb0c085_f0be_4d5a_9a59_6765e18de54a"
      unitRef="pure">0.0237</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_37_40baf480_9a35_4eab_8393_acc6e2b6cf00"
      unitRef="pure">-0.0021</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_C000038983Member"
      decimals="4"
      id="h_38_993881da_75c5_4661_83ea_2f8079fcfb5e"
      unitRef="pure">0.0184</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="D20240531_20241130_BloombergMunicipalBondIndexMember"
      id="t_20_c7795a8c_f210_852f_f548_feaa1fb8da6a">Bloomberg Municipal Bond Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="D20240531_20241130_BloombergMunicipalBondIndexMember"
      decimals="4"
      id="h_39_a485055c_2a9c_4611_83e9_ce21bd14d343"
      unitRef="pure">0.0454</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_BloombergMunicipalBondIndexMember"
      decimals="4"
      id="h_40_cf382ef1_fa65_43fa_b8ad_343e1a65a54e"
      unitRef="pure">0.0493</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_BloombergMunicipalBondIndexMember"
      decimals="4"
      id="h_41_24f71e83_f9f2_4bb8_bb7c_bae88afdea6f"
      unitRef="pure">0.0135</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_BloombergMunicipalBondIndexMember"
      decimals="4"
      id="h_42_e7a9c356_470f_421b_a7d3_99ab343224e4"
      unitRef="pure">0.0245</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="D20240531_20241130_CustomizedReferenceBenchmarkMember"
      id="t_21_45f27bf2_3362_c998_f08c_be97c97d305f">Customized Reference Benchmark</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_43_1df242c0_e82a_46e4_84ab_dc58728ae9a0"
      unitRef="pure">0.0494</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_CustomizedReferenceBenchmarkMember"
      decimals="4"
      id="h_44_4cb6b27b_c0bb_435f_b7be_7e17fdc5179d"
      unitRef="pure">0.0641</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_CustomizedReferenceBenchmarkMember"
      decimals="4"
      id="h_45_e05911e0_518f_4330_b7fb_0c35b8797f2c"
      unitRef="pure">0.0167</oef:AvgAnnlRtrPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="D20240531_20241130_C000038983Member"
      id="t_11_4bc836f5_58b1_e1ce_41cd_25f4a266f61c">
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; width: auto; font-family: 'Arial'; font-weight: bold; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;Key Fund statistics&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 0 6pt;"&gt;Net Assets&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;3,952,789,242&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 0 6pt;"&gt;Number of Portfolio Holdings&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;618&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 1.6pt 6pt;"&gt;Portfolio Turnover Rate&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 1.6pt 6pt;"&gt;20&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
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      decimals="INF"
      id="h_47_40d8cfd8_213e_4330_9a24_cd719818284d"
      unitRef="USD">3952789242</us-gaap:AssetsNet>
    <oef:HoldingsCount
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      decimals="INF"
      id="h_48_42dd2bb3_7257_463e_800f_bcede7b14a9e"
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    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="D20240531_20241130_C000038983Member"
      decimals="4"
      id="h_49_285df387_3558_4ebe_8dce_ba5afaabdafc"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="D20240531_20241130_C000038983Member"
      id="t_12_916bbb92_98ff_1fa0_dfdb_575975c6d9d8">Past performance is not an indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
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      contextRef="D20240531_20241130_C000038983Member"
      id="t_13_7e3e9ef4_6d7b_3f7e_1ef6_d20ed621598f">Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="D20240531_20241130_C000038983Member"
      id="t_14_43b6f8c4_fa25_cbd3_2102_5973b4f4864c">Visit &lt;span style="color: #000000; font-weight: bold; text-decoration-line: none; font-family: 'arial'; font-size: 8pt; line-height: 10.4pt; text-align: justify;"&gt;blackrock.com&lt;/span&gt; for more recent performance information.</oef:UpdPerfInfoLocationTextBlock>
    <oef:HoldingsTableTextBlock
      contextRef="D20240531_20241130_C000038983Member"
      id="t_15_07ca6b56_2000_ba3a_b534_7381c6a87978"> &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-weight: bold; font-size: 10pt; color: #000000; margin-bottom: -0.18pt;"&gt;What did the Fund invest in?&lt;/div&gt;  &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; text-align: justify; font-size: 9pt; line-height: 11.4pt; color: #000000; margin-bottom: 0px;"&gt;(as of November 30, 2024)&lt;/div&gt;
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td colspan="3" style="break-inside: avoid-page; vertical-align: bottom; white-space: nowrap; width: auto; font-family: 'Arial'; font-weight: normal; font-style: normal; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;&lt;strong&gt;Sector&lt;/strong&gt;&lt;strong&gt; allocation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-weight: normal; text-align: left; text-indent: -6pt; width: auto; padding: 1.6pt 0 0 6pt;"&gt;&lt;em&gt;Sector&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/em&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; padding: 1.6pt 0 0 6pt;"&gt;&lt;em&gt;Percent of Total&lt;br/&gt;Investments&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/em&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; padding: 1.6pt 0 0 6pt;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Utilities&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;23.2&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;County/City/Special District/School District&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;19.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Transportation&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;14.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;State&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;11.6&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Corporate&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;11.1&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Health&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;6.2&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Education&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.9&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Housing&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.3&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Tobacco&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;2.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Commercial Services &amp;amp; Supplies&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;0.7&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 1.6pt 6pt;"&gt;Other&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;*&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 1.6pt 0;"&gt;0.6&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td colspan="3" style="break-inside: avoid-page; vertical-align: bottom; white-space: nowrap; width: auto; font-family: 'Arial'; font-weight: normal; font-style: normal; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 6pt 1.5pt 0;"&gt;&lt;strong&gt;Credit quality allocation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Credit Rating&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(c)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; padding: 1.6pt 0 0 0;"&gt;Percent of Total&lt;br/&gt;Investments&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;AAA/Aaa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;14.2&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;AA/Aa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;41.7&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;A&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;15.5&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;BBB/Baa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.0&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;BB/Ba&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;2.7&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;B&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;0.4&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 1.6pt 6pt;"&gt;N/R&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(d)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 1.6pt 0;"&gt;21.5&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="border-collapse: collapse; break-inside: avoid-page; width: 100%; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; vertical-align: top; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; width: initial; text-indent: 0; color: #000000; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; text-indent: 0; color: #000000; width: 100%; padding: 1.6pt 0 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;For purposes of this report, sector sub-classifications may differ from those utilized by the Fund for compliance purposes.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Excludes short-term securities.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(c)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&amp;amp;P Global Ratings or Moody&#x2019;s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(d)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors and individual investments. Using this approach, the investment adviser has deemed certain of these unrated securities as investment grade quality. As of November 30, 2024, the market value of unrated securities deemed by the investment adviser to be investment grade represents less than 1.0% of&#160;total investments.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;*&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Ten largest sectors are presented. Additional sectors are found in Other.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:HoldingsTableTextBlock>
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      contextRef="D20240531_20241130_C000038983Member"
      id="t_16_f21ade43_b395_6e5a_571e_9d6a1b321544">For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&amp;amp;P Global Ratings or Moody&#x2019;s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.</oef:CreditRatingsSelectionTextBlock>
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      contextRef="D20240531_20241130_C000038983Member"
      id="t_17_8f081a71_f207_b524_75e5_e4e8584aab87">The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors and individual investments. Using this approach, the investment adviser has deemed certain of these unrated securities as investment grade quality. As of November 30, 2024, the market value of unrated securities deemed by the investment adviser to be investment grade represents less than 1.0% of&#160;total investments.</oef:CreditQualityExplanationTextBlock>
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      contextRef="D20240531_20241130_C000011339Member"
      id="t_4_5ac00e73_b17c_6378_b22c_162e74336134">This semi-annual shareholder report contains important information about BlackRock Strategic Municipal Opportunities Fund (the &#x201c;Fund&#x201d;) for the period of June 1, 2024 to November 30, 2024.</oef:AnnlOrSemiAnnlStatementTextBlock>
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      contextRef="D20240531_20241130_C000011339Member"
      id="t_6_c6b72368_4d81_541a_7406_4a64c715f279">You can find additional information about the Fund at &lt;span style="color: #000000; font-weight: bold; text-decoration-line: none; font-family: 'arial'; font-size: 8pt; line-height: 10.4pt; text-align: justify;"&gt;blackrock.com/fundreports&lt;/span&gt;. You can also request this information by contacting us at (800) 441&#x2011;7762.</oef:AddlInfoTextBlock>
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      contextRef="D20240531_20241130_C000011339Member"
      id="t_9_a2ed070b_67f5_7301_0cdd_67e0723268cf"> &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-weight: bold; font-size: 10pt; color: #000000; margin-bottom: -0.18pt;"&gt;&lt;b&gt;What were the &lt;/b&gt; &lt;b&gt;Fund&lt;/b&gt; &lt;b&gt; costs for the &lt;/b&gt; &lt;b&gt;last six months&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;  &lt;div style="margin-top: 0px; margin-bottom: 0px; font-kerning: none; font-family: 'arial'; font-size: 9pt; color: #000000;"&gt;(based on a hypothetical $10,000 investment)&lt;/div&gt;
&lt;table style="break-inside: avoid-page; margin-top: 2pt; table-layout: auto; width: 100%; border-collapse: collapse;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: left; padding: 2pt 0 2pt 0;"&gt;Class name&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: center; padding: 2pt 0 2pt 0;"&gt;Costs of a $10,000&lt;br/&gt;investment&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: center; padding: 2pt 0 2pt 0;"&gt;Costs paid as a percentage of a&lt;br/&gt;$10,000 investment&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; overflow-x: hidden; font-size: 8pt; line-height: 10pt; text-align: left; padding: 4pt 0 2pt 0;"&gt;Investor A1 Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: center; font-size: 8pt; line-height: 10pt; padding: 4pt 0 2pt 0;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;40&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; text-align: center; font-size: 8pt; line-height: 10pt; padding: 4pt 0 2pt 0;"&gt;0.77&lt;span&gt;%&lt;/span&gt;&lt;sup&gt;(a)&lt;/sup&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="break-inside: avoid-page; margin-top: 2pt; table-layout: auto; width: 100%; border-collapse: collapse;"&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; text-indent: 0; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup&gt;(a)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; text-indent: 0; width: 100%; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Annualized.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
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      id="h_61_c115e8b8_ef89_4176_bc33_0fa1a6f15196"
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    <oef:ExpenseRatioPct
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      decimals="4"
      id="h_62_d7990b30_872a_4fc9_a9c2_b57d0efbbb4e"
      unitRef="pure">0.0077</oef:ExpenseRatioPct>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="D20240531_20241130_C000011339Member"
      id="t_10_748f0205_28aa_51f3_c47e_c532aa8cf7f1">
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;" title="oef:AvgAnnlRtrTableTextBlock"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; width: auto; font-family: 'Arial'; font-weight: bold; font-style: normal; font-size: 10pt; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;Average annual total returns&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: 60%; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;6-Month&lt;br/&gt;Total&lt;br/&gt;Returns&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;1 Year&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;5 Years&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;10 Years&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Investor A1 Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.73&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;7.05&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;0.82&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;2.43&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Bloomberg Municipal Bond Index&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.54&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.93&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;1.35&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;2.45&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 6pt;"&gt;Customized Reference Benchmark&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;4.94&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;6.41&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;1.67&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;&lt;span class="sec-hidden" style="-sec-ix-hidden: h_74_80fb8c9a_6b9e_4ab9_b11e_03040eadd762;" title="element: N0%, context: 0%"&gt;N/A&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="D20240531_20241130_C000011339Member"
      id="t_16_553ddcd2_ae2b_98d5_f446_7bfa78849b5e">Investor A1 Shares</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_63_fd7f92d3_9254_47d3_bc63_a37e2c3a3e1c"
      unitRef="pure">0.0473</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_64_caca25cf_e061_4423_8f59_5a1306a32d17"
      unitRef="pure">0.0705</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_C000011339Member"
      decimals="4"
      id="h_65_594c0f55_9a99_4852_bc7f_87b3040ea6fe"
      unitRef="pure">0.0082</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_66_ae526272_6703_4ee2_b1cb_c01ba5087c5a"
      unitRef="pure">0.0243</oef:AvgAnnlRtrPct>
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      contextRef="D20240531_20241130_BloombergMunicipalBondIndexMember"
      id="t_17_06b1f01f_8b94_8c2e_0c94_96f07db661c6">Bloomberg Municipal Bond Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_67_fc9c0a79_b828_49cf_89f7_5d5280c7d6c3"
      unitRef="pure">0.0454</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_BloombergMunicipalBondIndexMember"
      decimals="4"
      id="h_68_97560ac5_a62b_4140_822e_93ed39b1a35b"
      unitRef="pure">0.0493</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_BloombergMunicipalBondIndexMember"
      decimals="4"
      id="h_69_01be6531_5865_4afd_b173_d55fe59947dd"
      unitRef="pure">0.0135</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_BloombergMunicipalBondIndexMember"
      decimals="4"
      id="h_70_87378e37_4d35_44f7_87eb_f609b8c9f822"
      unitRef="pure">0.0245</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="D20240531_20241130_CustomizedReferenceBenchmarkMember"
      id="t_18_47d4d29c_13c6_d0f1_ce09_6c990387ba86">Customized Reference Benchmark</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
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      decimals="4"
      id="h_71_cb0fd6d0_8b02_4d11_9c1e_1515ed63a390"
      unitRef="pure">0.0494</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_CustomizedReferenceBenchmarkMember"
      decimals="4"
      id="h_72_c0ba8359_91e0_48e7_bd3e_21ee0d0bbb36"
      unitRef="pure">0.0641</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_CustomizedReferenceBenchmarkMember"
      decimals="4"
      id="h_73_b9203401_7fda_4705_b4b1_4ac99bb554e5"
      unitRef="pure">0.0167</oef:AvgAnnlRtrPct>
    <oef:AddlFundStatisticsTextBlock
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      id="t_11_d3a66104_b1f3_4c02_cd9e_d97c2f717b36">
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; width: auto; font-family: 'Arial'; font-weight: bold; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;Key Fund statistics&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 0 6pt;"&gt;Net Assets&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;3,952,789,242&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 0 6pt;"&gt;Number of Portfolio Holdings&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;618&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 1.6pt 6pt;"&gt;Portfolio Turnover Rate&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 1.6pt 6pt;"&gt;20&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20241130_C000011339Member"
      decimals="INF"
      id="h_75_924162ae_d813_4698_a7aa_ef14286dfa8a"
      unitRef="USD">3952789242</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20241130_C000011339Member"
      decimals="INF"
      id="h_76_3a60b399_faa4_4c27_a9d5_1510075d85c5"
      unitRef="Holding">618</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="D20240531_20241130_C000011339Member"
      decimals="4"
      id="h_77_fb11d96a_f760_4417_ae88_155b79ffaf2b"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="D20240531_20241130_C000011339Member"
      id="t_12_c6ad7d55_1916_0a16_9d9c_9ba193e0ee0a">Past performance is not an indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="D20240531_20241130_C000011339Member"
      id="t_13_c22478a6_1563_5e74_5813_f4d20ddf4748">Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="D20240531_20241130_C000011339Member"
      id="t_14_70ce5759_2636_883f_e48e_6379cff8f004">Visit &lt;span style="color: #000000; font-weight: bold; text-decoration-line: none; font-family: 'arial'; font-size: 8pt; line-height: 10.4pt; text-align: justify;"&gt;blackrock.com&lt;/span&gt; for more recent performance information.</oef:UpdPerfInfoLocationTextBlock>
    <oef:HoldingsTableTextBlock
      contextRef="D20240531_20241130_C000011339Member"
      id="t_15_04f5e898_1dcb_7d2a_4f2d_0d9d1aaf53ff"> &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-weight: bold; font-size: 10pt; color: #000000; margin-bottom: -0.18pt;"&gt;What did the Fund invest in?&lt;/div&gt;  &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; text-align: justify; font-size: 9pt; line-height: 11.4pt; color: #000000; margin-bottom: 0px;"&gt;(as of November 30, 2024)&lt;/div&gt;
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td colspan="3" style="break-inside: avoid-page; vertical-align: bottom; white-space: nowrap; width: auto; font-family: 'Arial'; font-weight: normal; font-style: normal; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;&lt;strong&gt;Sector&lt;/strong&gt;&lt;strong&gt; allocation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-weight: normal; text-align: left; text-indent: -6pt; width: auto; padding: 1.6pt 0 0 6pt;"&gt;&lt;em&gt;Sector&lt;sup&gt;(a)&lt;/sup&gt;&lt;/em&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; padding: 1.6pt 0 0 6pt;"&gt;&lt;em&gt;Percent of Total&lt;br/&gt;Investments&lt;sup&gt;(b)&lt;/sup&gt;&lt;/em&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; padding: 1.6pt 0 0 6pt;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Utilities&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;23.2&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;County/City/Special District/School District&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;19.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Transportation&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;14.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;State&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;11.6&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Corporate&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;11.1&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Health&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;6.2&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Education&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.9&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Housing&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.3&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Tobacco&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;2.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Commercial Services &amp;amp; Supplies&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;0.7&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 1.6pt 6pt;"&gt;Other&lt;sup&gt;*&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 1.6pt 0;"&gt;0.6&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td colspan="3" style="break-inside: avoid-page; vertical-align: bottom; white-space: nowrap; width: auto; font-family: 'Arial'; font-weight: normal; font-style: normal; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 6pt 1.5pt 0;"&gt;&lt;strong&gt;Credit quality allocation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Credit Rating&lt;sup&gt;(c)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; padding: 1.6pt 0 0 0;"&gt;Percent of Total&lt;br/&gt;Investments&lt;sup&gt;(b)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;AAA/Aaa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;14.2&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;AA/Aa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;41.7&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;A&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;15.5&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;BBB/Baa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.0&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;BB/Ba&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;2.7&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;B&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;0.4&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 1.6pt 6pt;"&gt;N/R&lt;sup&gt;(d)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 1.6pt 0;"&gt;21.5&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="border-collapse: collapse; break-inside: avoid-page; width: 100%; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; vertical-align: top; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; width: initial; text-indent: 0; color: #000000; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup&gt;(a)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; text-indent: 0; color: #000000; width: 100%; padding: 1.6pt 0 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;For purposes of this report, sector sub-classifications may differ from those utilized by the Fund for compliance purposes.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup&gt;(b)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Excludes short-term securities.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup&gt;(c)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&amp;amp;P Global Ratings or Moody&#x2019;s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup&gt;(d)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors and individual investments. Using this approach, the investment adviser has deemed certain of these unrated securities as investment grade quality. As of November 30, 2024, the market value of unrated securities deemed by the investment adviser to be investment grade represents less than 1.0% of&#160;total investments.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup&gt;*&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Ten largest sectors are presented. Additional sectors are found in Other.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:HoldingsTableTextBlock>
    <oef:PctOfTotalInv
      contextRef="TI20241130_C000011339Member_UtilitiesSectorMember"
      decimals="4"
      id="h_78_4503067f_818f_4319_a8d3_508bba8b272b"
      unitRef="pure">0.232</oef:PctOfTotalInv>
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      contextRef="TI20241130_C000011339Member_CountyCitySpecialDistrictSchoolDistrictMember"
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      id="h_79_40400474_7407_4dbe_b13b_968d715fb7e8"
      unitRef="pure">0.198</oef:PctOfTotalInv>
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      contextRef="TI20241130_C000011339Member_TransportationSectorMember"
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      id="h_80_12911bcd_4370_4780_94ff_9286d5bf3b3b"
      unitRef="pure">0.148</oef:PctOfTotalInv>
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      contextRef="TI20241130_C000011339Member_StateMember"
      decimals="4"
      id="h_81_62bd04d0_1e0f_46c3_8acb_ee7dd367648a"
      unitRef="pure">0.116</oef:PctOfTotalInv>
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      contextRef="TI20241130_C000011339Member_CorporateSectorMember"
      decimals="4"
      id="h_82_32f02adb_7add_4c8d_9be9_6935e61187e4"
      unitRef="pure">0.111</oef:PctOfTotalInv>
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      contextRef="TI20241130_C000011339Member_HealthcareSectorMember"
      decimals="4"
      id="h_83_cb7df85c_49b3_47a1_afb8_fa7f1d593ec4"
      unitRef="pure">0.062</oef:PctOfTotalInv>
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      contextRef="TI20241130_C000011339Member_EducationMember"
      decimals="4"
      id="h_84_39f8c6d8_f9bb_416b_a993_c2e5a044d3f5"
      unitRef="pure">0.049</oef:PctOfTotalInv>
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      contextRef="TI20241130_C000011339Member_HousingMember"
      decimals="4"
      id="h_85_8044fab7_5ef0_44b3_9ab9_5ea3c590769a"
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      contextRef="TI20241130_C000011339Member_TobaccoMember"
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      id="h_86_22589fcb_bf34_4fbf_9780_75d6706d09f3"
      unitRef="pure">0.028</oef:PctOfTotalInv>
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      contextRef="TI20241130_C000011339Member_CommercialServicesAndSuppliesMember"
      decimals="4"
      id="h_87_e4a847e3_ef27_4d30_a5bd_b9a939fa6831"
      unitRef="pure">0.007</oef:PctOfTotalInv>
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      contextRef="TI20241130_C000011339Member_UnclassifiedSectorMember"
      decimals="4"
      id="h_88_cab4a84a_b193_4bdd_8d34_2eeb36fc1265"
      unitRef="pure">0.006</oef:PctOfTotalInv>
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      contextRef="TI20241130_C000011339Member_StandardPoorsAAARatingMember"
      decimals="4"
      id="h_89_1d8e0547_b313_3574_ff7b_56610214edb6"
      unitRef="pure">0.142</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="TI20241130_C000011339Member_StandardPoorsAARatingMember"
      decimals="4"
      id="h_90_18f65261_31ef_326a_bd83_8a0e34eb1f1a"
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    <oef:PctOfTotalInv
      contextRef="TI20241130_C000011339Member_StandardPoorsARatingMember"
      decimals="4"
      id="h_91_4a87721e_b765_586c_2d68_9c783737b9d8"
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      contextRef="TI20241130_C000011339Member_StandardPoorsBBBRatingMember"
      decimals="4"
      id="h_92_be0d8c28_e9ec_34db_995b_489695788d20"
      unitRef="pure">0.040</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="TI20241130_C000011339Member_StandardPoorsBBRatingMember"
      decimals="4"
      id="h_93_5abbc783_0ae2_386e_3357_785dbadc21b7"
      unitRef="pure">0.027</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="TI20241130_C000011339Member_StandardPoorsBRatingMember"
      decimals="4"
      id="h_94_5f6cb824_e07a_4f3d_38ca_46f657bb3b5e"
      unitRef="pure">0.004</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="TI20241130_C000011339Member_NRMember"
      decimals="4"
      id="h_95_15fcf703_2fdc_a5ac_9381_5faefc9e7df4"
      unitRef="pure">0.215</oef:PctOfTotalInv>
    <oef:CreditRatingsSelectionTextBlock
      contextRef="D20240531_20241130_C000011339Member"
      id="t_19_9bb6e456_7e88_6653_c412_3f7a1271c7b6">For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&amp;amp;P Global Ratings or Moody&#x2019;s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.</oef:CreditRatingsSelectionTextBlock>
    <oef:CreditQualityExplanationTextBlock
      contextRef="D20240531_20241130_C000011339Member"
      id="t_20_ffa932a6_f215_006c_6429_b3ed6d6e1b26">The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors and individual investments. Using this approach, the investment adviser has deemed certain of these unrated securities as investment grade quality. As of November 30, 2024, the market value of unrated securities deemed by the investment adviser to be investment grade represents less than 1.0% of&#160;total investments.</oef:CreditQualityExplanationTextBlock>
    <oef:FundName
      contextRef="D20240531_20241130_C000038984Member"
      id="t_1_9eaba4e6_cabe_90ba_ac80_1103426dd0b6">BlackRock Strategic Municipal Opportunities Fund</oef:FundName>
    <oef:ClassName
      contextRef="D20240531_20241130_C000038984Member"
      id="t_2_6b0f6db3_70bd_bac2_c04a_9d304cd5cdf1">Investor C Shares</oef:ClassName>
    <dei:TradingSymbol
      contextRef="D20240531_20241130_C000038984Member"
      id="t_3_bcf83cc8_8bdd_38a5_f830_e192357efe10">MFMTX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="D20240531_20241130_C000038984Member"
      id="t_5_ca21e8fe_ea08_1b26_89a4_ee96452a880c">This semi-annual shareholder report contains important information about BlackRock Strategic Municipal Opportunities Fund (the &#x201c;Fund&#x201d;) for the period of June 1, 2024 to November 30, 2024.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="D20240531_20241130_C000038984Member"
      id="t_4_edafc76c_042a_b026_3d36_03dff81740f1">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="D20240531_20241130_C000038984Member"
      id="t_6_649e18b0_afd8_8f23_5ab1_8e1789f922d3">You can find additional information about the Fund at &lt;span style="color: #000000; font-weight: bold; text-decoration-line: none; font-family: 'arial'; font-size: 8pt; line-height: 10.4pt; text-align: justify;"&gt;blackrock.com/fundreports&lt;/span&gt;. You can also request this information by contacting us at (800) 441&#x2011;7762.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="D20240531_20241130_C000038984Member"
      id="t_8_7fda3c4d_5bf8_e90f_d154_38a1e18f37a3">blackrock.com/fundreports</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="D20240531_20241130_C000038984Member"
      id="t_7_10c0315d_78bc_8d4e_2d03_d093fe189006">(800) 441&#x2011;7762</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="D20240531_20241130_C000038984Member"
      id="t_9_cc3bf005_6b6b_dc55_8ea7_c6042d95c729"> &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-weight: bold; font-size: 10pt; color: #000000; margin-bottom: -0.18pt;"&gt;&lt;b&gt;What were the &lt;/b&gt; &lt;b&gt;Fund&lt;/b&gt; &lt;b&gt; costs for the &lt;/b&gt; &lt;b&gt;last six months&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;  &lt;div style="margin-top: 0px; margin-bottom: 0px; font-kerning: none; font-family: 'arial'; font-size: 9pt; color: #000000;"&gt;(based on a hypothetical $10,000 investment)&lt;/div&gt;
&lt;table style="break-inside: avoid-page; margin-top: 2pt; table-layout: auto; width: 100%; border-collapse: collapse;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: left; padding: 2pt 0 2pt 0;"&gt;Class name&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: center; padding: 2pt 0 2pt 0;"&gt;Costs of a $10,000&lt;br/&gt;investment&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: center; padding: 2pt 0 2pt 0;"&gt;Costs paid as a percentage of a&lt;br/&gt;$10,000 investment&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; overflow-x: hidden; font-size: 8pt; line-height: 10pt; text-align: left; padding: 4pt 0 2pt 0;"&gt;Investor C Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: center; font-size: 8pt; line-height: 10pt; padding: 4pt 0 2pt 0;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;86&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; text-align: center; font-size: 8pt; line-height: 10pt; padding: 4pt 0 2pt 0;"&gt;1.68&lt;span&gt;%&lt;/span&gt;&lt;span style="vertical-align: 0.5em; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/span&gt;&lt;sup style="vertical-align: 0.5em; font-size: smaller; line-height: 0px;"&gt;&lt;/sup&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="break-inside: avoid-page; margin-top: 2pt; table-layout: auto; width: 100%; border-collapse: collapse;"&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; text-indent: 0; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; text-indent: 0; width: 100%; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Annualized.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="D20240531_20241130_C000038984Member"
      decimals="INF"
      id="h_89_c35e790a_ff51_415d_8a88_35f7f42922f3"
      unitRef="USD">86</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="D20240531_20241130_C000038984Member"
      decimals="4"
      id="h_90_d0fd62a0_984d_49ba_b211_e0d822a39b12"
      unitRef="pure">0.0168</oef:ExpenseRatioPct>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="D20240531_20241130_C000038984Member"
      id="t_10_e6032cfa_1348_1c47_b775_5da768e7c8f9">
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;" title="oef:AvgAnnlRtrTableTextBlock"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; width: auto; font-family: 'Arial'; font-weight: bold; font-style: normal; font-size: 10pt; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;Average annual total returns&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: 60%; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;6-Month&lt;br/&gt;Total&lt;br/&gt;Returns&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;1 Year&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;5 Years&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;10 Years&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Investor C Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.25&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: middle; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;6.08&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: middle; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;(0.10&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: middle; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;)&lt;/span&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;1.66&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: middle; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Investor C Shares (with sales charge)&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;3.25&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;5.08&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;(0.10&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;)&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;1.66&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Bloomberg Municipal Bond Index&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.54&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.93&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;1.35&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;2.45&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 6pt;"&gt;Customized Reference Benchmark&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;4.94&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;6.41&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;1.67&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;&lt;span class="sec-hidden" style="-sec-ix-hidden: h_106_630a97a4_cc1c_4512_a9af_916dcaaf268f;" title="Manually tagged"&gt;N/A&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AvgAnnlRtrTableTextBlock>
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      id="h_97_ff0d1759_cab1_4742_8175_b61fcdfdaa4b"
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      id="h_98_0c680195_4d9e_423c_9dff_14737afd8052"
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      id="t_20_b238e39e_84f5_0237_f31d_569fbef6e4ff">Bloomberg Municipal Bond Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
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      id="h_99_9e81a839_7383_4d4a_916f_78fd8c54da7f"
      unitRef="pure">0.0454</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
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      id="h_100_0673ca19_89b3_4aff_b008_5bc8fbeb145a"
      unitRef="pure">0.0493</oef:AvgAnnlRtrPct>
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      id="h_101_3f094200_f7cc_4430_9f06_da4a44dd00cf"
      unitRef="pure">0.0135</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="h_102_5938d4e4_7c8d_4ac8_b1e4_8770bbdd9fc3"
      unitRef="pure">0.0245</oef:AvgAnnlRtrPct>
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      contextRef="D20240531_20241130_CustomizedReferenceBenchmarkMember"
      id="t_21_135598ef_c428_a22c_c7fd_ad46b4368393">Customized Reference Benchmark</oef:LineGraphAndTableMeasureName>
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      id="h_103_25426830_03a3_4500_82f3_73b5a1aab2f6"
      unitRef="pure">0.0494</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="h_104_b61525ee_5cee_476a_995d_e348d0df76ea"
      unitRef="pure">0.0641</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_CustomizedReferenceBenchmarkMember"
      decimals="4"
      id="h_105_53a53456_fd84_4c95_ba55_e9db7b6dd030"
      unitRef="pure">0.0167</oef:AvgAnnlRtrPct>
    <oef:AddlFundStatisticsTextBlock
      contextRef="D20240531_20241130_C000038984Member"
      id="t_11_357c0456_edc7_ca66_2cef_7f94a97fbb1a">
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; width: auto; font-family: 'Arial'; font-weight: bold; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;Key Fund statistics&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 0 6pt;"&gt;Net Assets&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;3,952,789,242&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 0 6pt;"&gt;Number of Portfolio Holdings&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;618&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 1.6pt 6pt;"&gt;Portfolio Turnover Rate&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 1.6pt 6pt;"&gt;20&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20241130_C000038984Member"
      decimals="INF"
      id="h_107_237bf487_b11e_4241_b3e1_ee8f01ffe9ff"
      unitRef="USD">3952789242</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20241130_C000038984Member"
      decimals="INF"
      id="h_108_8a95f026_d9fb_45e9_9183_4b17d212f96e"
      unitRef="Holding">618</oef:HoldingsCount>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="D20240531_20241130_C000038984Member"
      decimals="4"
      id="h_109_0dfd1d68_7bff_4109_8890_f500ff2d90b7"
      unitRef="pure">0.20</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="D20240531_20241130_C000038984Member"
      id="t_12_468ea000_c2b9_5b1e_a8f2_1f9efa4f7cba">Past performance is not an indication of future results.</oef:PerformancePastDoesNotIndicateFuture>
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      contextRef="D20240531_20241130_C000038984Member"
      id="t_13_37121b5a_a8be_8e92_1a44_1dd858aaf342">Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="D20240531_20241130_C000038984Member"
      id="t_14_5523e6be_4f3b_a0ad_3878_c323bf393264">Visit &lt;span style="color: #000000; font-weight: bold; text-decoration-line: none; font-family: 'arial'; font-size: 8pt; line-height: 10.4pt; text-align: justify;"&gt;blackrock.com&lt;/span&gt; for more recent performance information.</oef:UpdPerfInfoLocationTextBlock>
    <oef:HoldingsTableTextBlock
      contextRef="D20240531_20241130_C000038984Member"
      id="t_15_9b9dcb8d_ea87_7483_e4e5_80e9e9b4bb2d"> &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-weight: bold; font-size: 10pt; color: #000000; margin-bottom: -0.18pt;"&gt;What did the Fund invest in?&lt;/div&gt;  &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; text-align: justify; font-size: 9pt; line-height: 11.4pt; color: #000000; margin-bottom: 0px;"&gt;(as of November 30, 2024)&lt;/div&gt;
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td colspan="3" style="break-inside: avoid-page; vertical-align: bottom; white-space: nowrap; width: auto; font-family: 'Arial'; font-weight: normal; font-style: normal; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;&lt;strong&gt;Sector&lt;/strong&gt;&lt;strong&gt; allocation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-weight: normal; text-align: left; text-indent: -6pt; width: auto; padding: 1.6pt 0 0 6pt;"&gt;&lt;em&gt;Sector&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/em&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; padding: 1.6pt 0 0 6pt;"&gt;&lt;em&gt;Percent of Total&lt;br/&gt;Investments&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/em&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; padding: 1.6pt 0 0 6pt;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Utilities&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;23.2&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: middle; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;County/City/Special District/School District&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;19.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Transportation&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;14.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;State&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;11.6&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Corporate&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;11.1&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Health&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;6.2&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Education&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.9&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Housing&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.3&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Tobacco&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;2.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Commercial Services &amp;amp; Supplies&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;0.7&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 1.6pt 6pt;"&gt;Other&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;*&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 1.6pt 0;"&gt;0.6&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td colspan="3" style="break-inside: avoid-page; vertical-align: bottom; white-space: nowrap; width: auto; font-family: 'Arial'; font-weight: normal; font-style: normal; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 6pt 1.5pt 0;"&gt;&lt;strong&gt;Credit quality allocation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Credit Rating&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;(c)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; padding: 1.6pt 0 0 0;"&gt;Percent of Total&lt;br/&gt;Investments&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;AAA/Aaa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;14.2&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: middle; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;AA/Aa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;41.7&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;A&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;15.5&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;BBB/Baa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.0&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;BB/Ba&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;2.7&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;B&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;0.4&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 1.6pt 6pt;"&gt;N/R&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;(d)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 1.6pt 0;"&gt;21.5&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="border-collapse: collapse; break-inside: avoid-page; width: 100%; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; vertical-align: top; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; width: initial; text-indent: 0; color: #000000; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; text-indent: 0; color: #000000; width: 100%; padding: 1.6pt 0 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;For purposes of this report, sector sub-classifications may differ from those utilized by the Fund for compliance purposes.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Excludes short-term securities.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;(c)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&amp;amp;P Global Ratings or Moody&#x2019;s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;(d)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors and individual investments. Using this approach, the investment adviser has deemed certain of these unrated securities as investment grade quality. As of November 30, 2024, the market value of unrated securities deemed by the investment adviser to be investment grade represents less than 1.0% of&#160;total investments.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="vertical-align: middle; font-size: smaller; line-height: 0px;"&gt;*&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Ten largest sectors are presented. Additional sectors are found in Other.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:HoldingsTableTextBlock>
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      id="h_122_83f98316_4934_d310_02ab_ecbdd570cbf5"
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      id="h_123_b7c30a4e_c699_b8ce_28e6_a241e524520e"
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      contextRef="TI20241130_C000038984Member_StandardPoorsBBBRatingMember"
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      id="h_124_12277ee4_cec3_efd8_5c5d_f20e36057f36"
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      decimals="4"
      id="h_125_424d9ea9_d1e2_f604_5c77_753cca01d0de"
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      decimals="4"
      id="h_126_85ff1fec_0ab2_6f0a_6888_fdc5f27028e9"
      unitRef="pure">0.004</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="TI20241130_C000038984Member_NRMember"
      decimals="4"
      id="h_127_92926623_a0d3_f781_456f_231e289626bc"
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      contextRef="D20240531_20241130_C000038984Member"
      id="t_16_d19158f3_b0a4_23f3_da3a_b59492f14ddc">For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&amp;amp;P Global Ratings or Moody&#x2019;s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.</oef:CreditRatingsSelectionTextBlock>
    <oef:CreditQualityExplanationTextBlock
      contextRef="D20240531_20241130_C000038984Member"
      id="t_17_e9aff1ef_e59c_3366_3b86_dacee4ce2d21">The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors and individual investments. Using this approach, the investment adviser has deemed certain of these unrated securities as investment grade quality. As of November 30, 2024, the market value of unrated securities deemed by the investment adviser to be investment grade represents less than 1.0% of&#160;total investments.</oef:CreditQualityExplanationTextBlock>
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      contextRef="D20240531_20241130_C000199785Member"
      id="t_1_306f9bbc_5e98_9392_b7e5_a94a48b7a8a1">BlackRock Strategic Municipal Opportunities Fund</oef:FundName>
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      contextRef="D20240531_20241130_C000199785Member"
      id="t_2_f3ff221b_b5a4_d3b1_af3c_a4544a3e08f2">Class K Shares</oef:ClassName>
    <dei:TradingSymbol
      contextRef="D20240531_20241130_C000199785Member"
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      contextRef="D20240531_20241130_C000199785Member"
      id="t_4_e4d3d25e_c286_dbc1_7944_2add6e11719d">This semi-annual shareholder report contains important information about BlackRock Strategic Municipal Opportunities Fund (the &#x201c;Fund&#x201d;) for the period of June 1, 2024 to November 30, 2024.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="D20240531_20241130_C000199785Member"
      id="t_5_a9e0e981_6d4a_0d00_ead4_f4f295258045">semi-annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="D20240531_20241130_C000199785Member"
      id="t_6_0a447193_6a8d_6bfa_54f0_938415910d39">You can find additional information about the Fund at &lt;span style="color: #000000; font-weight: bold; text-decoration-line: none; font-family: 'arial'; font-size: 8pt; line-height: 10.4pt; text-align: justify;"&gt;blackrock.com/fundreports&lt;/span&gt;. You can also request this information by contacting us at (800) 441&#x2011;7762.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="D20240531_20241130_C000199785Member"
      id="t_7_2e3c00e4_40f5_cc25_843c_492b99decc93">blackrock.com/fundreports</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="D20240531_20241130_C000199785Member"
      id="t_8_fd2cf576_caff_7dc2_c041_e63d817c42bd">(800) 441&#x2011;7762</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="D20240531_20241130_C000199785Member"
      id="t_9_f0ed7a5c_0a52_6ca4_7e30_20fcecd06bc0"> &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-weight: bold; font-size: 10pt; color: #000000; margin-bottom: -0.18pt;"&gt;&lt;b&gt;What were the &lt;/b&gt; &lt;b&gt;Fund&lt;/b&gt; &lt;b&gt; costs for the &lt;/b&gt; &lt;b&gt;last six months&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;  &lt;div style="margin-top: 0px; margin-bottom: 0px; font-kerning: none; font-family: 'arial'; font-size: 9pt; color: #000000;"&gt;(based on a hypothetical $10,000 investment)&lt;/div&gt;
&lt;table style="break-inside: avoid-page; margin-top: 2pt; table-layout: auto; width: 100%; border-collapse: collapse;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: left; padding: 2pt 0 2pt 0;"&gt;Class name&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: center; padding: 2pt 0 2pt 0;"&gt;Costs of a $10,000&lt;br/&gt;investment&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-weight: bold; font-size: 9pt; line-height: 11pt; color: #000000; background-color: #ffce00; text-align: center; padding: 2pt 0 2pt 0;"&gt;Costs paid as a percentage of a&lt;br/&gt;$10,000 investment&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; overflow-x: hidden; font-size: 8pt; line-height: 10pt; text-align: left; padding: 4pt 0 2pt 0;"&gt;Class K Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: center; font-size: 8pt; line-height: 10pt; padding: 4pt 0 2pt 0;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;32&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; text-align: center; font-size: 8pt; line-height: 10pt; padding: 4pt 0 2pt 0;"&gt;0.62&lt;span&gt;%&lt;/span&gt;&lt;sup&gt;(a)&lt;/sup&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="break-inside: avoid-page; margin-top: 2pt; table-layout: auto; width: 100%; border-collapse: collapse;"&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; text-indent: 0; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; text-indent: 0; width: 100%; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Annualized.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:ExpensesTextBlock>
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      id="h_121_8e340af2_91cc_4fab_ba24_aef10136708d"
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      id="h_122_18996837_4e60_4221_a1f6_59cb6e67288a"
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    <oef:AvgAnnlRtrTableTextBlock
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&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;" title="oef:AvgAnnlRtrTableTextBlock"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; width: auto; font-family: 'Arial'; font-weight: bold; font-style: normal; font-size: 10pt; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;Average annual total returns&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; width: auto; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: 60%; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;6-Month&lt;br/&gt;Total&lt;br/&gt;Returns&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;1 Year&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;5 Years&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;10 Years&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; width: auto; font-family: 'Arial'; font-weight: normal; font-style: italic; font-size: 8pt; line-height: 10pt; white-space: nowrap; color: #000000; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Class K Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.81&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;7.21&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;0.97&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;2.55&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 6pt;"&gt;Bloomberg Municipal Bond Index&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.54&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;4.93&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;1.35&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 0 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 0 0;"&gt;2.45&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; color: #000000; overflow-x: hidden; font-family: 'Arial'; width: 100%; text-indent: -6pt; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 6pt;"&gt;Customized Reference Benchmark&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;4.94&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;6.41&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;1.67&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 6pt 1.6pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; color: #000000; width: auto; font-size: 8pt; line-height: 10pt; padding: 2pt 0 1.6pt 0;"&gt;&lt;span class="sec-hidden" style="-sec-ix-hidden: h_134_b334c009_7c38_487b_8530_20afbef6aed6;" title="element: N0%, context: 0%"&gt;N/A&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; color: #000000; text-align: left; white-space: nowrap; width: auto; font-size: 8pt; line-height: 10pt; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AvgAnnlRtrTableTextBlock>
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&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; width: auto; font-family: 'Arial'; font-weight: bold; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;Key Fund statistics&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 0 6pt;"&gt;Net Assets&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;3,952,789,242&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 0 6pt;"&gt;Number of Portfolio Holdings&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 0 6pt;"&gt;618&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-size: 8pt; line-height: 10pt; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 6pt 1.6pt 6pt;"&gt;Portfolio Turnover Rate&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; font-family: 'Arial'; color: #000000; font-size: 8pt; line-height: 10pt; width: 12%; padding: 1.6pt 6pt 1.6pt 6pt;"&gt;20&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:AddlFundStatisticsTextBlock>
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    <oef:HoldingsCount
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    <us-gaap:InvestmentCompanyPortfolioTurnover
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      id="h_137_0bb97e09_6cf6_4292_9995_52b02e46abfa"
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      id="t_12_e75b5388_63e7_6b5f_a2d8_bec5827cb130">2018-01-25</oef:PerfInceptionDate>
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      id="t_14_f05c6fed_dab0_544c_4109_8f8d91185a67">Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.</oef:NoDeductionOfTaxesTextBlock>
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      contextRef="D20240531_20241130_C000199785Member"
      id="t_15_fecc8583_ab75_86ac_9cb8_87b621ffef1e">Visit &lt;span style="color: #000000; font-weight: bold; text-decoration-line: none; font-family: 'arial'; font-size: 8pt; line-height: 10.4pt; text-align: justify;"&gt;blackrock.com&lt;/span&gt; for more recent performance information.</oef:UpdPerfInfoLocationTextBlock>
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      contextRef="D20240531_20241130_C000199785Member"
      id="t_16_ef3bb2a8_4ef9_c859_564c_2b0f1070a08a"> &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-weight: bold; font-size: 10pt; color: #000000; margin-bottom: -0.18pt;"&gt;What did the Fund invest in?&lt;/div&gt;  &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; text-align: justify; font-size: 9pt; line-height: 11.4pt; color: #000000; margin-bottom: 0px;"&gt;(as of November 30, 2024)&lt;/div&gt;
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td colspan="3" style="break-inside: avoid-page; vertical-align: bottom; white-space: nowrap; width: auto; font-family: 'Arial'; font-weight: normal; font-style: normal; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 0 1.5pt 0;"&gt;&lt;strong&gt;Sector&lt;/strong&gt;&lt;strong&gt; allocation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-weight: normal; text-align: left; text-indent: -6pt; width: auto; padding: 1.6pt 0 0 6pt;"&gt;&lt;em&gt;Sector&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/em&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; padding: 1.6pt 0 0 6pt;"&gt;&lt;em&gt;Percent of Total&lt;br/&gt;Investments&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/em&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; padding: 1.6pt 0 0 6pt;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Utilities&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;23.2&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;County/City/Special District/School District&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;19.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Transportation&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;14.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;State&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;11.6&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Corporate&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;11.1&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Health&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;6.2&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Education&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.9&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Housing&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.3&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Tobacco&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;2.8&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Commercial Services &amp;amp; Supplies&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;0.7&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 1.6pt 6pt;"&gt;Other&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;*&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 1.6pt 0;"&gt;0.6&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="break-inside: avoid-page; table-layout: auto; width: 100%; border-collapse: collapse; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; background-color: #ffce00; border-bottom-color: #000000;"&gt;
&lt;td colspan="3" style="break-inside: avoid-page; vertical-align: bottom; white-space: nowrap; width: auto; font-family: 'Arial'; font-weight: normal; font-style: normal; font-size: 10pt; line-height: normal; text-align: left; text-indent: 0; letter-spacing: normal; text-transform: none; font-kerning: none; color: #000000; margin-top: 0; margin-bottom: 0; padding: 2pt 6pt 1.5pt 0;"&gt;&lt;strong&gt;Credit quality allocation&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-style: solid; border-bottom-width: 0.5pt; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: italic; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; white-space: nowrap; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;Credit Rating&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(c)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; white-space: nowrap; padding: 1.6pt 0 0 0;"&gt;Percent of Total&lt;br/&gt;Investments&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; vertical-align: bottom; font-kerning: none; text-align: left; white-space: nowrap; padding: 1.6pt 0 0 0;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;AAA/Aaa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;14.2&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;AA/Aa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;41.7&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;A&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;15.5&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;BBB/Baa&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;4.0&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;BB/Ba&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;2.7&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 0 6pt;"&gt;B&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 0 0;"&gt;0.4&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 0 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: 0.5pt; border-bottom-style: solid; break-inside: avoid-page; height: auto; font-family: 'arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: #000000;"&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; font-weight: normal; text-align: left; width: 100%; text-indent: -6pt; padding: 1.6pt 0 1.6pt 6pt;"&gt;N/R&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(d)&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; text-align: right; font-kerning: none; color: #000000; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 2pt 0 1.6pt 0;"&gt;21.5&lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; color: #000000; text-align: left; white-space: nowrap; width: auto; font-family: 'Arial'; font-style: normal; font-size: 8pt; line-height: 10pt; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; padding: 1.6pt 0 1.6pt 0;"&gt;&lt;span style="visibility: hidden; margin-left: -7pt;"&gt;%&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table style="border-collapse: collapse; break-inside: avoid-page; width: 100%; margin-top: 0px;"&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; vertical-align: top; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; width: initial; text-indent: 0; color: #000000; padding: 1.6pt 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(a)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; text-indent: 0; color: #000000; width: 100%; padding: 1.6pt 0 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;For purposes of this report, sector sub-classifications may differ from those utilized by the Fund for compliance purposes.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(b)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Excludes short-term securities.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(c)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&amp;amp;P Global Ratings or Moody&#x2019;s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;(d)&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;The investment adviser evaluates the credit quality of unrated investments based upon certain factors including, but not limited to, credit ratings for similar investments and financial analysis of sectors and individual investments. Using this approach, the investment adviser has deemed certain of these unrated securities as investment grade quality. As of November 30, 2024, the market value of unrated securities deemed by the investment adviser to be investment grade represents less than 1.0% of&#160;total investments.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-kerning: none; overflow-x: hidden; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: initial; vertical-align: top; text-indent: 0; padding: 0 6pt 0 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;&#x200b;&lt;sup style="; font-size: smaller; line-height: 0px;"&gt;*&lt;/sup&gt;&lt;/div&gt; &lt;/td&gt;
&lt;td style="break-inside: avoid-page; vertical-align: bottom; font-kerning: none; font-family: 'Arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; color: #000000; width: 100%; padding: 0;"&gt; &lt;div style="margin-top: 0px; font-kerning: none; font-family: 'arial'; font-style: normal; font-size: 7pt; line-height: 9pt; text-align: justify; vertical-align: top; color: #000000; margin-bottom: 0px; padding: 0px;"&gt;Ten largest sectors are presented. Additional sectors are found in Other.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:HoldingsTableTextBlock>
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      id="t_17_9a4019a2_baed_5397_9ce5_18601c562da1">For purposes of this report, credit quality ratings shown above reflect the highest rating assigned by either S&amp;amp;P Global Ratings or Moody&#x2019;s Investors Service, Inc. if ratings differ. These rating agencies are independent, nationally recognized statistical rating organizations and are widely used. Investment grade ratings are credit ratings of BBB/Baa or higher. Below investment grade ratings are credit ratings of BB/Ba or lower. Investments designated N/R are not rated by either rating agency. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.</oef:CreditRatingsSelectionTextBlock>
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