<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:bmstmbf="http://www.bny.com/20250520"
  xmlns:dei="http://xbrl.sec.gov/dei/2023"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:oef="http://xbrl.sec.gov/oef/2023"
  xmlns:stpr="http://xbrl.sec.gov/stpr/2023"
  xmlns:us-gaap="http://fasb.org/us-gaap/2023"
  xmlns:utr="http://www.xbrl.org/2009/utr"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="bmstmbf-20250520.xsd" xlink:type="simple"/>
    <context id="DefaultContext">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
        </entity>
        <period>
            <startDate>2024-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FiveY2025_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FiveY2025_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FiveY2025_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FiveY2025_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FiveY2025_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FiveY2025_C000079007Member_WithoutSalesLoadMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:SalesLoadAxis">oef:WithoutSalesLoadMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FiveY2025_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FY2025_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FY2025_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FY2025_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FY2025_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FY2025_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FY2025_C000079007Member_WithoutSalesLoadMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:SalesLoadAxis">oef:WithoutSalesLoadMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="FY2025_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="TenY2025_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2015-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="TenY2025_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2015-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="TenY2025_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2015-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="TenY2025_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2015-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="TenY2025_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2015-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="TenY2025_C000079007Member_WithoutSalesLoadMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:SalesLoadAxis">oef:WithoutSalesLoadMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2015-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="TenY2025_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2015-04-01</startDate>
            <endDate>2025-03-31</endDate>
        </period>
    </context>
    <context id="TI20150331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2015-03-31</instant>
        </period>
    </context>
    <context id="TI20150331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2015-03-31</instant>
        </period>
    </context>
    <context id="TI20150331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2015-03-31</instant>
        </period>
    </context>
    <context id="TI20150331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2015-03-31</instant>
        </period>
    </context>
    <context id="TI20150331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2015-03-31</instant>
        </period>
    </context>
    <context id="TI20150331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2015-03-31</instant>
        </period>
    </context>
    <context id="TI20160331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2016-03-31</instant>
        </period>
    </context>
    <context id="TI20160331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2016-03-31</instant>
        </period>
    </context>
    <context id="TI20160331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2016-03-31</instant>
        </period>
    </context>
    <context id="TI20160331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2016-03-31</instant>
        </period>
    </context>
    <context id="TI20160331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2016-03-31</instant>
        </period>
    </context>
    <context id="TI20160331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2016-03-31</instant>
        </period>
    </context>
    <context id="TI20170331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2017-03-31</instant>
        </period>
    </context>
    <context id="TI20170331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2017-03-31</instant>
        </period>
    </context>
    <context id="TI20170331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2017-03-31</instant>
        </period>
    </context>
    <context id="TI20170331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2017-03-31</instant>
        </period>
    </context>
    <context id="TI20170331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2017-03-31</instant>
        </period>
    </context>
    <context id="TI20170331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2017-03-31</instant>
        </period>
    </context>
    <context id="TI20180331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2018-03-31</instant>
        </period>
    </context>
    <context id="TI20180331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2018-03-31</instant>
        </period>
    </context>
    <context id="TI20180331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2018-03-31</instant>
        </period>
    </context>
    <context id="TI20180331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2018-03-31</instant>
        </period>
    </context>
    <context id="TI20180331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2018-03-31</instant>
        </period>
    </context>
    <context id="TI20180331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2018-03-31</instant>
        </period>
    </context>
    <context id="TI20190331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2019-03-31</instant>
        </period>
    </context>
    <context id="TI20190331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2019-03-31</instant>
        </period>
    </context>
    <context id="TI20190331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2019-03-31</instant>
        </period>
    </context>
    <context id="TI20190331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2019-03-31</instant>
        </period>
    </context>
    <context id="TI20190331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2019-03-31</instant>
        </period>
    </context>
    <context id="TI20190331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2019-03-31</instant>
        </period>
    </context>
    <context id="TI20200331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2020-03-31</instant>
        </period>
    </context>
    <context id="TI20200331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2020-03-31</instant>
        </period>
    </context>
    <context id="TI20200331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2020-03-31</instant>
        </period>
    </context>
    <context id="TI20200331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2020-03-31</instant>
        </period>
    </context>
    <context id="TI20200331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2020-03-31</instant>
        </period>
    </context>
    <context id="TI20200331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2020-03-31</instant>
        </period>
    </context>
    <context id="TI20210331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2021-03-31</instant>
        </period>
    </context>
    <context id="TI20210331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2021-03-31</instant>
        </period>
    </context>
    <context id="TI20210331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2021-03-31</instant>
        </period>
    </context>
    <context id="TI20210331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2021-03-31</instant>
        </period>
    </context>
    <context id="TI20210331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2021-03-31</instant>
        </period>
    </context>
    <context id="TI20210331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2021-03-31</instant>
        </period>
    </context>
    <context id="TI20220331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2022-03-31</instant>
        </period>
    </context>
    <context id="TI20220331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2022-03-31</instant>
        </period>
    </context>
    <context id="TI20220331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2022-03-31</instant>
        </period>
    </context>
    <context id="TI20220331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2022-03-31</instant>
        </period>
    </context>
    <context id="TI20220331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2022-03-31</instant>
        </period>
    </context>
    <context id="TI20220331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2022-03-31</instant>
        </period>
    </context>
    <context id="TI20230331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2023-03-31</instant>
        </period>
    </context>
    <context id="TI20230331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2023-03-31</instant>
        </period>
    </context>
    <context id="TI20230331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2023-03-31</instant>
        </period>
    </context>
    <context id="TI20230331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2023-03-31</instant>
        </period>
    </context>
    <context id="TI20230331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2023-03-31</instant>
        </period>
    </context>
    <context id="TI20230331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2023-03-31</instant>
        </period>
    </context>
    <context id="TI20240331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-03-31</instant>
        </period>
    </context>
    <context id="TI20240331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-03-31</instant>
        </period>
    </context>
    <context id="TI20240331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-03-31</instant>
        </period>
    </context>
    <context id="TI20240331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-03-31</instant>
        </period>
    </context>
    <context id="TI20240331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-03-31</instant>
        </period>
    </context>
    <context id="TI20240331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2024-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_BloombergMunicipalBond13YearBlendIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergMunicipalBond13YearBlendIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_BloombergUSMunicipalBondIndexMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">bmstmbf:BloombergUSMunicipalBondIndexMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_AirportMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:AirportMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_AL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:AL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_AZ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:AZ</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_CA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_CT">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:CT</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_DevelopmentMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:DevelopmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_EducationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:EducationMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_FL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:FL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_GeneralObligationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">bmstmbf:GeneralObligationMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_HousingMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:HousingMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_IA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_IL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_IN">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_MA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_MD">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MD</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_MedicalMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:MedicalMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_MI">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MI</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_MO">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MO</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_NC">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NC</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_NetOtherAssetsAndLiabilitiesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">bmstmbf:NetOtherAssetsAndLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_NetOtherAssetsAndLiabilitiesStateAllocationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:OtherCategory1Axis">bmstmbf:NetOtherAssetsAndLiabilitiesStateAllocationMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_NJ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NJ</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_NursingHomesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:NursingHomesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_NV">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NV</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_NY">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NY</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_OH">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:OH</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_PA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:PA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_PowerMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:PowerMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_SC">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:SC</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_SchoolDistrictMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:SchoolDistrictMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_StudentLoanMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">us-gaap:StudentLoanMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_TN">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:TN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_TobaccoSettlementMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:TobaccoSettlementMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_TransportationSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:TransportationSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_TX">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:TX</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_USRelatedMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:OtherCategory1Axis">bmstmbf:USRelatedMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_WA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:WA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000000147Member_WI">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000000147Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:WI</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_AirportMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:AirportMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_AL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:AL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_AZ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:AZ</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_CA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_CT">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:CT</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_DevelopmentMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:DevelopmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_EducationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:EducationMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_FL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:FL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_GeneralObligationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">bmstmbf:GeneralObligationMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_HousingMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:HousingMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_IA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_IL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_IN">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_MA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_MD">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MD</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_MedicalMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:MedicalMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_MI">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MI</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_MO">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MO</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_NC">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NC</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_NetOtherAssetsAndLiabilitiesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">bmstmbf:NetOtherAssetsAndLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_NetOtherAssetsAndLiabilitiesStateAllocationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:OtherCategory1Axis">bmstmbf:NetOtherAssetsAndLiabilitiesStateAllocationMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_NJ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NJ</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_NursingHomesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:NursingHomesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_NV">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NV</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_NY">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NY</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_OH">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:OH</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_PA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:PA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_PowerMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:PowerMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_SC">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:SC</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_SchoolDistrictMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:SchoolDistrictMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_StudentLoanMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">us-gaap:StudentLoanMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_TN">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:TN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_TobaccoSettlementMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:TobaccoSettlementMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_TransportationSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:TransportationSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_TX">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:TX</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_USRelatedMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:OtherCategory1Axis">bmstmbf:USRelatedMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_WA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:WA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000073380Member_WI">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000073380Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:WI</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_AirportMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:AirportMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_AL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:AL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_AZ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:AZ</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_CA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_CT">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:CT</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_DevelopmentMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:DevelopmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_EducationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:EducationMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_FL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:FL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_GeneralObligationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">bmstmbf:GeneralObligationMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_HousingMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:HousingMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_IA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_IL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_IN">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_MA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_MD">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MD</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_MedicalMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:MedicalMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_MI">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MI</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_MO">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MO</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_NC">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NC</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_NetOtherAssetsAndLiabilitiesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">bmstmbf:NetOtherAssetsAndLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_NetOtherAssetsAndLiabilitiesStateAllocationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:OtherCategory1Axis">bmstmbf:NetOtherAssetsAndLiabilitiesStateAllocationMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_NJ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NJ</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_NursingHomesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:NursingHomesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_NV">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NV</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_NY">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NY</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_OH">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:OH</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_PA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:PA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_PowerMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:PowerMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_SC">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:SC</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_SchoolDistrictMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:SchoolDistrictMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_StudentLoanMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">us-gaap:StudentLoanMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_TN">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:TN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_TobaccoSettlementMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:TobaccoSettlementMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_TransportationSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:TransportationSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_TX">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:TX</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_USRelatedMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:OtherCategory1Axis">bmstmbf:USRelatedMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_WA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:WA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000079007Member_WI">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000079007Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:WI</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_AirportMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:AirportMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_AL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:AL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_AZ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:AZ</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_CA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_CT">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:CT</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_DevelopmentMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:DevelopmentMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_EducationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:EducationMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_FL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:FL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_GeneralObligationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">bmstmbf:GeneralObligationMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_HousingMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:HousingMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_IA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_IL">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IL</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_IN">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:IN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_MA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_MD">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MD</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_MedicalMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:MedicalMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_MI">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MI</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_MO">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:MO</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_NC">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NC</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_NetOtherAssetsAndLiabilitiesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">bmstmbf:NetOtherAssetsAndLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_NetOtherAssetsAndLiabilitiesStateAllocationMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:OtherCategory1Axis">bmstmbf:NetOtherAssetsAndLiabilitiesStateAllocationMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_NJ">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NJ</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_NursingHomesMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:NursingHomesMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_NV">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NV</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_NY">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:NY</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_OH">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:OH</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_PA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:PA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_PowerMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:PowerMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_SC">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:SC</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_SchoolDistrictMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:SchoolDistrictMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_StudentLoanMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">us-gaap:StudentLoanMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_TN">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:TN</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_TobaccoSettlementMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">bmstmbf:TobaccoSettlementMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_TransportationSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">us-gaap:TransportationSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_TX">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:TX</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_USRelatedMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:OtherCategory1Axis">bmstmbf:USRelatedMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_UtilitiesSectorMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">oef:UtilitiesSectorMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_WA">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:WA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <context id="TI20250331_C000130293Member_WI">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000810305</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">bmstmbf:C000130293Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">stpr:WI</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2025-03-31</instant>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="USD_shares">
        <divide>
            <unitNumerator>
                <measure>iso4217:USD</measure>
            </unitNumerator>
            <unitDenominator>
                <measure>shares</measure>
            </unitDenominator>
        </divide>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <unit id="shares">
        <measure>shares</measure>
    </unit>
    <unit id="Day">
        <measure>utr:D</measure>
    </unit>
    <unit id="Holding">
        <measure>bmstmbf:Holding</measure>
    </unit>
    <oef:AcctVal
      contextRef="TI20190331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_03dcc754_d421_4ee2_b285_d2b6d15f46af"
      unitRef="USD">11266</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_TN"
      decimals="4"
      id="h_05e6cf9c_1291_4a5e_9d57_70bd2254ace7"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_PA"
      decimals="4"
      id="h_060ebc08_5f87_4b1a_88e5_10fa9f1c6979"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20220331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_0a9ace0f_14af_4b11_8ab7_f1a3719baca9"
      unitRef="USD">10726</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_IA"
      decimals="4"
      id="h_0ab05437_d6fd_413d_9d04_f66d3ec1a45e"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20210331_C000079007Member"
      decimals="INF"
      id="h_0b986537_e44e_463d_8ef6_da351fdce917"
      unitRef="USD">10436</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_SC"
      decimals="4"
      id="h_0fa8a5a7_d955_46b9_a5aa_40b94b2facc8"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20170331_C000079007Member"
      decimals="INF"
      id="h_100a408a_1ed0_42d4_bb73_f11c637ce2ce"
      unitRef="USD">9840</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_TN"
      decimals="4"
      id="h_102fc842_27a3_427b_9fec_e1e29e206f7d"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_TransportationSectorMember"
      decimals="4"
      id="h_1231851c_768d_4ee8_bda5_e5ee70d1fbe6"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20220331_C000079007Member"
      decimals="INF"
      id="h_135bd558_c2df_4646_b43b_60911f8c4087"
      unitRef="USD">10054</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20200331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_13d8e661_d5d3_4775_bdf0_82338656b95c"
      unitRef="USD">11699</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_FL"
      decimals="4"
      id="h_14623d40_89c6_4374_b580_7c6d08eb0545"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20170331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_15c34243_0c63_495e_83a0_b273ebe72fed"
      unitRef="USD">10188</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20200331_C000000147Member"
      decimals="INF"
      id="h_173a72cc_3656_4fea_a400_c1ca0347e1db"
      unitRef="USD">10513</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_WI"
      decimals="4"
      id="h_1764f5a0_b706_41e7_a17b_7457429008d3"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20230331_C000079007Member"
      decimals="INF"
      id="h_1908b8a9_b260_49a1_bad7_639c8ded83e5"
      unitRef="USD">10116</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_PowerMember"
      decimals="4"
      id="h_1913aade_1f98_4958_b40c_91fa9588ed22"
      unitRef="pure">0.059</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20240331_C000079007Member"
      decimals="INF"
      id="h_1f61bfa0_0294_4a79_98eb_1dc318e4cfd9"
      unitRef="USD">10314</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_WI"
      decimals="4"
      id="h_20acf2da_d96f_4f15_811d_70b03e1557d0"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_AZ"
      decimals="4"
      id="h_2166408b_2274_4692_8c9c_0495b7229763"
      unitRef="pure">0.040</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20180331_C000000147Member"
      decimals="INF"
      id="h_218e0c2f_06eb_447b_bfd3_41da9d1a22ff"
      unitRef="USD">10121</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_TobaccoSettlementMember"
      decimals="4"
      id="h_231706cd_5cb0_4bcc_9697_08926cab47e3"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_SchoolDistrictMember"
      decimals="4"
      id="h_26bd2be0_5009_425c_a8be_6f9e33708bb2"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20190331_C000130293Member"
      decimals="INF"
      id="h_271b7713_3c4b_417f_bfe9_fb2872a28f57"
      unitRef="USD">1037350</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_MD"
      decimals="4"
      id="h_2737174e_e0e8_4f37_9e6e_161cb5763ffa"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20190331_C000000147Member"
      decimals="INF"
      id="h_2832e035_d531_4c7a_9738_72e58593a5da"
      unitRef="USD">10364</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_AZ"
      decimals="4"
      id="h_285ddf96_4b80_45b1_8ca6_8181010621b0"
      unitRef="pure">0.040</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20230331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_2cd7ddf9_2288_4274_b486_f8e09b58490f"
      unitRef="USD">10888</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_NC"
      decimals="4"
      id="h_2fe2c592_f9f0_41bb_b7c3_3883247388a9"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_FL"
      decimals="4"
      id="h_32060013_31b1_44d1_8207_3ee78852535f"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20200331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_3236ae17_cffa_44a0_b1ae_0a7675fc21a5"
      unitRef="USD">10709</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_NJ"
      decimals="4"
      id="h_34d4194a_5668_4942_af8c_b03073db2324"
      unitRef="pure">0.041</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_GeneralObligationMember"
      decimals="4"
      id="h_361a2a69_3eaa_443b_8732_2b2855a3cd5c"
      unitRef="pure">0.125</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_NetOtherAssetsAndLiabilitiesStateAllocationMember"
      decimals="4"
      id="h_36d4b0c6_3f4f_41d7_b3d6_b1d0b2eef1c3"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_AirportMember"
      decimals="4"
      id="h_38105ca2_9e59_40e2_a550_397471d7e030"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_USRelatedMember"
      decimals="4"
      id="h_39002195_6af5_430a_93d4_6a31a083fbfd"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_AirportMember"
      decimals="4"
      id="h_39446f59_bbf9_4ad7_b6cf_114ea10caa8d"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_OH"
      decimals="4"
      id="h_3c71dea1_cfb6_4885_945e_6f7e74d1c65f"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20160331_C000130293Member"
      decimals="INF"
      id="h_3d1ed678_46b1_4628_84ef_82c99d70ede1"
      unitRef="USD">1012062</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_NetOtherAssetsAndLiabilitiesStateAllocationMember"
      decimals="4"
      id="h_3d7f90ea_90f1_4c78_b1b6_4e64c9459aeb"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_AZ"
      decimals="4"
      id="h_3dbbba85_3d7d_475b_9843_683b4725eb80"
      unitRef="pure">0.040</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_TX"
      decimals="4"
      id="h_3dc708d4_d887_4ec0_82b3_35b0405ba801"
      unitRef="pure">0.124</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_AirportMember"
      decimals="4"
      id="h_3e7038f3_a428_4f57_b2b7_3e355a659777"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20250331_C000130293Member"
      decimals="INF"
      id="h_3ec9a577_d1c5_4279_993a_8cc71f1efc2c"
      unitRef="USD">1114400</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20240331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_3f0c1af5_06e3_4ef2_b6a3_4a55261becaa"
      unitRef="USD">12193</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_MA"
      decimals="4"
      id="h_3f103f9e_deb7_4b23_91f3_47971a5d07c4"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_MD"
      decimals="4"
      id="h_3feab0af_04af_4130_a701_c1c38a199717"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_FL"
      decimals="4"
      id="h_408f6afa_1aff_47a0_9ff0_8bfef95c5a4b"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_MD"
      decimals="4"
      id="h_4214fc35_7126_46ce_938f_3f6160be5ae9"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20210331_C000000147Member"
      decimals="INF"
      id="h_456636af_2d48_4f88_8961_dfdc2c69cea2"
      unitRef="USD">10797</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20250331_C000079007Member"
      decimals="INF"
      id="h_475ae043_04ea_40a6_97bd_8d3ee0f17420"
      unitRef="USD">10617</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_HousingMember"
      decimals="4"
      id="h_482bf71d_2448_4694_8c26_df0fbdff0b8a"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_TX"
      decimals="4"
      id="h_49570fc5_e736_496f_84a9_6f62c4f325e8"
      unitRef="pure">0.124</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_IN"
      decimals="4"
      id="h_4a0b8267_9d2e_47c8_8a6d_bbf9d6bafc1f"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20220331_C000130293Member"
      decimals="INF"
      id="h_4aa0a7a7_6413_4323_a0e2_b0cccd253117"
      unitRef="USD">1046824</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20170331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_4dac007e_ac65_4404_a533_d7da3668c812"
      unitRef="USD">10414</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_IL"
      decimals="4"
      id="h_4df5800b_4694_45d8_b795_d66e7243d529"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_AL"
      decimals="4"
      id="h_4dfb2bac_e36e_4033_a0bb_d8c31f2f1656"
      unitRef="pure">0.029</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_IL"
      decimals="4"
      id="h_4f092c96_4d02_48f8_a442_6c9cd38c3de1"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_AirportMember"
      decimals="4"
      id="h_4fe18930_9ba7_4007_b9ca_a531fb7222a0"
      unitRef="pure">0.054</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_TN"
      decimals="4"
      id="h_5242a202_e089_49e8_96be_e849b5603f1d"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_StudentLoanMember"
      decimals="4"
      id="h_52bf56db_a29a_479b_8872_5a189eee1032"
      unitRef="pure">0.068</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20150331_C000079007Member"
      decimals="INF"
      id="h_53cb9cb3_d2dd_4b89_9e63_3af17b0a7847"
      unitRef="USD">9753</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_IL"
      decimals="4"
      id="h_55cc86e0_0050_490f_ae83_584db0922c97"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_NetOtherAssetsAndLiabilitiesStateAllocationMember"
      decimals="4"
      id="h_57fa5cc6_c2c7_4566_b48f_ede39d0a0195"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_TX"
      decimals="4"
      id="h_5a36164e_3f98_4c8b_b9de_087346cc5b7b"
      unitRef="pure">0.124</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20220331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_5a833bd2_3495_4ca0_9625_cc206cd556c2"
      unitRef="USD">11792</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_NJ"
      decimals="4"
      id="h_5c602b1d_350f_41c5_96fc_bd1aafe0ca2e"
      unitRef="pure">0.041</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_NV"
      decimals="4"
      id="h_5d37741d_20cc_42b8_adde_0c7ed8bef2b6"
      unitRef="pure">0.021</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_SC"
      decimals="4"
      id="h_5de0e047_a547_4dfe_bbe3_0fd91a2d2726"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_IN"
      decimals="4"
      id="h_5e1c792a_4bdc_42d1_bc70_dd7c30773206"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_NetOtherAssetsAndLiabilitiesStateAllocationMember"
      decimals="4"
      id="h_60111151_b446_4713_908a_90124a5187d9"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20180331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_646cc5fb_d254_43f7_8a6f_5967c087b45c"
      unitRef="USD">10691</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_NY"
      decimals="4"
      id="h_64aecff0_d035_4d3d_b023_ba5d2dd5ddb3"
      unitRef="pure">0.074</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20160331_C000000147Member"
      decimals="INF"
      id="h_65941ed8_9e8b_427c_b1d7_f1f5a1982e9b"
      unitRef="USD">10110</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_TransportationSectorMember"
      decimals="4"
      id="h_65e999b1_24c9_4ecf_9ac0_18e74efed1e9"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_NursingHomesMember"
      decimals="4"
      id="h_65ebdd3b_f8b2_42c3_949e_85f8a7cb008b"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_UtilitiesSectorMember"
      decimals="4"
      id="h_65f0d74d_f537_4431_a805_39db8d8991c8"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_NY"
      decimals="4"
      id="h_66661ca7_8c3a_4255_a56d_2280744577e2"
      unitRef="pure">0.074</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20250331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_68c785b6_78cb_4a3c_a4a0_5c9337b80d59"
      unitRef="USD">11495</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_PowerMember"
      decimals="4"
      id="h_6b80d620_e675_4558_b416_2b6ed82a981b"
      unitRef="pure">0.059</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_FL"
      decimals="4"
      id="h_6d4883ac_a859_4876_8a77_8041fdbb50c0"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20220331_C000000147Member"
      decimals="INF"
      id="h_6df4ef7f_8f01_426f_a67c_8861106b82db"
      unitRef="USD">10418</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_UtilitiesSectorMember"
      decimals="4"
      id="h_70e8eddc_d1b3_426b_95e7_080697674d8a"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_MI"
      decimals="4"
      id="h_70f7f2fe_bf9c_4bcd_84ff_c9a7f5e6baee"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_USRelatedMember"
      decimals="4"
      id="h_727161bd_ca56_46b6_be35_57917be4e1a2"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20160331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_767ac725_3f89_40c4_84da_d80fd3565f05"
      unitRef="USD">10125</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_WA"
      decimals="4"
      id="h_77b42f1e_39b2_4301_af61_3ae276d9e811"
      unitRef="pure">0.046</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_StudentLoanMember"
      decimals="4"
      id="h_7b2a28f1_f769_42cf_95b3_23ae748f0caf"
      unitRef="pure">0.068</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_NursingHomesMember"
      decimals="4"
      id="h_7bad4bd2_aad2_4ea7_b32c_7058ffbd5b22"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_CA"
      decimals="4"
      id="h_7c3071fd_40b1_400e_a9ec_e75ea82338ab"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20150331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_7cf4d5e6_10a1_4ec1_a44a_0f7292a0f593"
      unitRef="USD">10000</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_PowerMember"
      decimals="4"
      id="h_7e2dc70d_3712_477a_bfb1_11804814a8e0"
      unitRef="pure">0.059</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_SchoolDistrictMember"
      decimals="4"
      id="h_7f3cb402_6f41_40ff_87f5_cdc986e8cc5b"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_IL"
      decimals="4"
      id="h_8027c53a_37ab_45ec_a8ee_d363c29b9556"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_MI"
      decimals="4"
      id="h_807a29bb_d0c0_4a73_ae89_0899b4c854e6"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_EducationMember"
      decimals="4"
      id="h_80f5a089_65f3_49f7_95e5_2f0fa0940122"
      unitRef="pure">0.110</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20150331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_81ba2d59_6c4a_428d_91f8_501ad93e2226"
      unitRef="USD">10000</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_HousingMember"
      decimals="4"
      id="h_82607341_9bd1_4ca5_aa53_65b537568f4e"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_AL"
      decimals="4"
      id="h_82b17704_c944_4a14_86f4_b0e2e253af12"
      unitRef="pure">0.029</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_MedicalMember"
      decimals="4"
      id="h_84bf5766_5dd0_4d02_96d9_d5fdbea7b597"
      unitRef="pure">0.118</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_DevelopmentMember"
      decimals="4"
      id="h_84eacc29_bac6_4db0_8869_60609df4517a"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_MA"
      decimals="4"
      id="h_86a375e1_aea5_434f_8244_6f0995ab7a6b"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_WA"
      decimals="4"
      id="h_86af2cff_744e_4e34_84d6_0f774f44f165"
      unitRef="pure">0.046</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_NC"
      decimals="4"
      id="h_8731d777_c72d_4f33_a5cb_f470eede1f96"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20200331_C000079007Member"
      decimals="INF"
      id="h_88b26706_3c98_4315_895b_d1a3789f7c24"
      unitRef="USD">10177</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_MedicalMember"
      decimals="4"
      id="h_88ba9f09_23f2_4c1f_b02d_5b964f89c731"
      unitRef="pure">0.118</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_MO"
      decimals="4"
      id="h_8951a058_34cd_4bfc_987c_7347f6b9cbe3"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_NV"
      decimals="4"
      id="h_8ab4fce9_3c34_4012_b80d_bada151bd04c"
      unitRef="pure">0.021</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20230331_C000130293Member"
      decimals="INF"
      id="h_8bf421d0_8249_4d94_bf98_d59779154ce4"
      unitRef="USD">1054825</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_TN"
      decimals="4"
      id="h_8cf3cac5_d50b_4dab_9cc0_3e488ab0829c"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_MA"
      decimals="4"
      id="h_8f7127ec_b793_4b14_b5ff_6a01ccdae20a"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_USRelatedMember"
      decimals="4"
      id="h_90122dde_3603_4128_a7d7_43ca8fc852cf"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_IN"
      decimals="4"
      id="h_909f61f9_c44c_48df_aa34_5313eb897f24"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20210331_C000130293Member"
      decimals="INF"
      id="h_90b61952_cbfd_4761_a421_c7de24ea264f"
      unitRef="USD">1083075</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20160331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_915f8298_7f50_4fef_959c_ff17e1f0afff"
      unitRef="USD">10398</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_CT"
      decimals="4"
      id="h_91ff136d_fc13_48ee_b0fc_324750b3c8a8"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_GeneralObligationMember"
      decimals="4"
      id="h_92121824_62ea_4970_90c6_9ad988dd8bd6"
      unitRef="pure">0.125</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_WI"
      decimals="4"
      id="h_9280c4ac_c969_4c40_8f7e_b4dff3f8e03e"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20170331_C000130293Member"
      decimals="INF"
      id="h_930ab361_ca18_40c3_a468_f3f7a25c0eef"
      unitRef="USD">1014096</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_NursingHomesMember"
      decimals="4"
      id="h_94334672_94d2_47ba_8162_93aaf1718b1c"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_EducationMember"
      decimals="4"
      id="h_9566df83_470f_4814_9493_ad65d12980bf"
      unitRef="pure">0.110</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_MO"
      decimals="4"
      id="h_95ba0fe8_6996_4199_858b_cc5424fea4fd"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_AL"
      decimals="4"
      id="h_96679a6d_b1e1_4485_8cae_e6c4044ea68b"
      unitRef="pure">0.029</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_NY"
      decimals="4"
      id="h_97a37cb7_c32c_4a6b_8163_8e75258d8765"
      unitRef="pure">0.074</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_TobaccoSettlementMember"
      decimals="4"
      id="h_985dda1d_4835_435a_a311_e96d6cf01614"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_NJ"
      decimals="4"
      id="h_98ab8442_6e72_4d92_8be0_5fe5cf2a4d51"
      unitRef="pure">0.041</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_GeneralObligationMember"
      decimals="4"
      id="h_98b9774d_8b0a_4a6a_9148_f37201dc6d12"
      unitRef="pure">0.125</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_WI"
      decimals="4"
      id="h_9be8da75_d493_4d19_82d3_0691a52bd9ae"
      unitRef="pure">0.033</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20230331_C000000147Member"
      decimals="INF"
      id="h_9c3c8fa4_395d_4119_b21e_aa3e6f7e848f"
      unitRef="USD">10498</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_TX"
      decimals="4"
      id="h_9dcd68de_1124_4a43_9ff5_409d23f692e7"
      unitRef="pure">0.124</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_PA"
      decimals="4"
      id="h_a0c293b1_fbcf_49fa_bcfd_11164defea71"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_NetOtherAssetsAndLiabilitiesMember"
      decimals="4"
      id="h_a16258f1_8cc4_4aef_9e13_84bda433c5e5"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_MI"
      decimals="4"
      id="h_a26bb6a9_602e_47b1_bfb5_321e8298df45"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_DevelopmentMember"
      decimals="4"
      id="h_a40133d9_9c7a_49d8_9b97_9bcd59e1befb"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_IN"
      decimals="4"
      id="h_a41fe146_af97_455a_9596_f97b6e70c12d"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_CT"
      decimals="4"
      id="h_a61a9aa1_237a_45af_b009_f686c01ea600"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_PA"
      decimals="4"
      id="h_a660339b_0386_49ed_a8d6_d897ccbd27bc"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_WA"
      decimals="4"
      id="h_a7a83b6b_8582_487f_a825_df5a5052fa62"
      unitRef="pure">0.046</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_NetOtherAssetsAndLiabilitiesMember"
      decimals="4"
      id="h_a9304f0f_7719_40ad_921b_91e188ccbd7b"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_SC"
      decimals="4"
      id="h_a9ebe9a0_f1e9_4d0b_8eb2_9d6fc1b92b65"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_TobaccoSettlementMember"
      decimals="4"
      id="h_ab3faabd_c77e_4e3b_a84d_85b8b52e2602"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_MA"
      decimals="4"
      id="h_ac42daa1_03e5_4950_b112_6dfe1449eb13"
      unitRef="pure">0.014</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20180331_C000130293Member"
      decimals="INF"
      id="h_ac451f15_cc67_4569_835e_82b00327cf58"
      unitRef="USD">1015989</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20240331_C000000147Member"
      decimals="INF"
      id="h_ad6df1d9_9dd7_496b_98bb_4cb10910b72f"
      unitRef="USD">10719</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_IA"
      decimals="4"
      id="h_ae56e9d2_f065_403d_a21f_fd1d0c5b5c00"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_CA"
      decimals="4"
      id="h_af82c21a_7056_4399_80c4_ebe26a8e4b18"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_IA"
      decimals="4"
      id="h_b09ac936_b29f_4c16_aec0_7c7997bd9007"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_NV"
      decimals="4"
      id="h_b16cfcc7_c494_40ee_a819_130868ce67de"
      unitRef="pure">0.021</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20150331_C000073380Member"
      decimals="INF"
      id="h_b17089ce_f069_4b08_96a5_042f27a9bb76"
      unitRef="USD">10000</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_NV"
      decimals="4"
      id="h_b202a591_7224_4e3a_ab02_ea8232cd6bdf"
      unitRef="pure">0.021</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_StudentLoanMember"
      decimals="4"
      id="h_b34e3093_a32b_4877_95a1_e0ebf04002d8"
      unitRef="pure">0.068</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_WA"
      decimals="4"
      id="h_b43c7c61_a8d4_4a85_ab40_9b68989ff98f"
      unitRef="pure">0.046</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_StudentLoanMember"
      decimals="4"
      id="h_b4d763ab_1116_4324_a1aa_91dc5c214372"
      unitRef="pure">0.068</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20150331_C000130293Member"
      decimals="INF"
      id="h_b54ef709_9f1e_4667_a9a7_fc032173d9e5"
      unitRef="USD">1000000</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20190331_C000079007Member"
      decimals="INF"
      id="h_b587409a_9ebd_40cb_93e9_cb789ecff8ab"
      unitRef="USD">10047</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_NetOtherAssetsAndLiabilitiesMember"
      decimals="4"
      id="h_b5aef62f_7ea4_4e00_a179_35a7a65d9f79"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_AZ"
      decimals="4"
      id="h_b71e009e_de9b_4c82_972d_30f3dc9aed59"
      unitRef="pure">0.040</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20150331_C000000147Member"
      decimals="INF"
      id="h_b7a97a6b_b4f7_4c96_b638_89a744e7af9d"
      unitRef="USD">10000</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_NetOtherAssetsAndLiabilitiesMember"
      decimals="4"
      id="h_b8fc5183_d93b_435f_b1c9_609a016ca41c"
      unitRef="pure">0.156</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20240331_C000130293Member"
      decimals="INF"
      id="h_b918fca7_2337_4612_82e7_b5ab1c1370d1"
      unitRef="USD">1079061</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_NursingHomesMember"
      decimals="4"
      id="h_baf45bc2_75fe_44d4_aba3_a65ba6fbea5a"
      unitRef="pure">0.048</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_MD"
      decimals="4"
      id="h_bb956212_90bf_44d0_a8ad_58ebbe7b5cd8"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_MO"
      decimals="4"
      id="h_bcaae318_4b77_46dc_8d8f_837caf67205c"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_UtilitiesSectorMember"
      decimals="4"
      id="h_bd5b0b95_a7a3_42ff_bb0a_6314f4b9cafc"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_NY"
      decimals="4"
      id="h_bd721284_d1a7_4d01_bb8d_af5f8a9d9f1e"
      unitRef="pure">0.074</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20250331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_bf9e5c0d_bb0f_4f82_87b2_3731af675f2a"
      unitRef="USD">12341</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_CA"
      decimals="4"
      id="h_bfbe7908_d910_4b65_bf18_881a06edf22a"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20230331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_c0b469e6_e2a4_451f_83ab_8559b34ad30e"
      unitRef="USD">11823</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_GeneralObligationMember"
      decimals="4"
      id="h_c21baa7c_79ae_4300_b294_b093a53c7d33"
      unitRef="pure">0.125</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_OH"
      decimals="4"
      id="h_c2cf442b_6fcc_4637_94e7_f32de5531407"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_NC"
      decimals="4"
      id="h_c444611d_3a54_46ca_87c7_bcd01085731e"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20200331_C000130293Member"
      decimals="INF"
      id="h_c5dd196a_9702_4525_9c66_6395aab18d19"
      unitRef="USD">1054366</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_PowerMember"
      decimals="4"
      id="h_c64aab69_9049_495a_a43d_ebab0a16f902"
      unitRef="pure">0.059</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_USRelatedMember"
      decimals="4"
      id="h_c72bf2d9_96a3_40a5_b0be_5d643772922f"
      unitRef="pure">0.024</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20250331_C000000147Member"
      decimals="INF"
      id="h_c74a660a_6b54_43e4_9f58_419a88eb6a07"
      unitRef="USD">11050</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20210331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_c77cdd59_3216_4a5d_bf3d_0454c75a5e77"
      unitRef="USD">11022</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_HousingMember"
      decimals="4"
      id="h_c7cfb32a_b741_4bdb_a5ce_4e2f404d51ea"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_CT"
      decimals="4"
      id="h_c84aa018_e40b_4ea0_aeeb_50e691305460"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_EducationMember"
      decimals="4"
      id="h_c8b60690_2b65_417b_9290_1ef7f9c395af"
      unitRef="pure">0.110</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_NJ"
      decimals="4"
      id="h_c93add5b_9a68_491c_9564_b65dcdc57562"
      unitRef="pure">0.041</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_MI"
      decimals="4"
      id="h_ca3a635d_fa44_4b8f_9828_edc3f6f63bdd"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_SC"
      decimals="4"
      id="h_cb30fc5c_5962_413e_bdcf_e97806a99807"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_DevelopmentMember"
      decimals="4"
      id="h_cba817b8_f0e2_4613_a1f1_6eba5e3caa62"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_SchoolDistrictMember"
      decimals="4"
      id="h_cdeb8ed3_7b64_445b_bec2_45d0beef109c"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_IA"
      decimals="4"
      id="h_ce7bf4d9_0926_4e2b_b86d_0186ee8163ad"
      unitRef="pure">0.027</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_MedicalMember"
      decimals="4"
      id="h_ce7f0a0b_af8d_4592_bb1e_fe86f8ff606d"
      unitRef="pure">0.118</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_TobaccoSettlementMember"
      decimals="4"
      id="h_cf2508a4_2f0e_4072_83ee_67dea7f5b7cc"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_PA"
      decimals="4"
      id="h_d23be18d_016f_4733_8763_2c55fe1474d8"
      unitRef="pure">0.084</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20170331_C000000147Member"
      decimals="INF"
      id="h_d25cce80_7f56_4b40_afa4_c4384d42be6d"
      unitRef="USD">10113</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_MO"
      decimals="4"
      id="h_d38bec6e_f115_4585_a4ba_e6556b949b03"
      unitRef="pure">0.013</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_MedicalMember"
      decimals="4"
      id="h_d4034576_494d_4c81_9fa0_c3f76ac51067"
      unitRef="pure">0.118</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20180331_C000079007Member"
      decimals="INF"
      id="h_d428ab37_70f0_456d_b898_490cf71963cb"
      unitRef="USD">9834</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_UtilitiesSectorMember"
      decimals="4"
      id="h_d58a0f78_12a4_44c0_be8d_d9eacce06ea1"
      unitRef="pure">0.034</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_AL"
      decimals="4"
      id="h_d8b8b48c_93e5_4e52_9c20_c2569cd601f8"
      unitRef="pure">0.029</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_OH"
      decimals="4"
      id="h_e0d3a7db_e28a_4630_9d68_ec67ab4c0a1f"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_EducationMember"
      decimals="4"
      id="h_e92f593f_9ae6_4ed1_b8fd_a3899aa485af"
      unitRef="pure">0.110</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_DevelopmentMember"
      decimals="4"
      id="h_ea748efe_210b_4a60_a3ea_eb157376faad"
      unitRef="pure">0.104</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_SchoolDistrictMember"
      decimals="4"
      id="h_eb83c6f7_aa26_4141_8f3d_1e01be52f55d"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20160331_C000079007Member"
      decimals="INF"
      id="h_ecbe6a33_6cea_4dad_aece_20e7b89ce9cd"
      unitRef="USD">9845</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000079007Member_HousingMember"
      decimals="4"
      id="h_ee03a5d2_5360_4153_9b2e_518079a029e5"
      unitRef="pure">0.030</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20210331_BloombergUSMunicipalBondIndexMember"
      decimals="INF"
      id="h_f127a5f8_d766_40b2_a3fe_1a4896a17a68"
      unitRef="USD">12344</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20240331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_f24dafb2_3c28_4712_a2dc_f1d5403aa5e4"
      unitRef="USD">11109</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_CT"
      decimals="4"
      id="h_f2e8be1c_216e_41c4_92bf_fa6944c5abf2"
      unitRef="pure">0.015</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000130293Member_TransportationSectorMember"
      decimals="4"
      id="h_f6e362a5_e9fa_4585_a3da_a7eb64288089"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_NC"
      decimals="4"
      id="h_f75c7464_7256_49d5_8c88_b27e39c1e172"
      unitRef="pure">0.026</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20190331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_fc32bf00_fd96_453a_bfb8_0ee7e4fce9f2"
      unitRef="USD">10515</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_TransportationSectorMember"
      decimals="4"
      id="h_fe2a5229_0547_4859_9dbd_423b7d0b95a8"
      unitRef="pure">0.055</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20180331_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="INF"
      id="h_fe7ae9e6_bba3_4a7f_bbfd_f748e1a8ecbd"
      unitRef="USD">10238</oef:AcctVal>
    <oef:PctOfNav
      contextRef="TI20250331_C000000147Member_OH"
      decimals="4"
      id="h_ff762d53_0fb9_4533_8b35_34aee3a51cea"
      unitRef="pure">0.032</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="TI20250331_C000073380Member_CA"
      decimals="4"
      id="h_ffde0b71_2ab2_4036_b161_254a26b237c2"
      unitRef="pure">0.039</oef:PctOfNav>
    <oef:AcctVal
      contextRef="TI20250331_C000073380Member"
      decimals="INF"
      id="h_095d8edc_6819_4ee5_824d_6fa19d5c27c9"
      unitRef="USD">11160</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20220331_C000073380Member"
      decimals="INF"
      id="h_0f524352_b1bb_4a6a_9fb8_f51581d36b14"
      unitRef="USD">10498</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20230331_C000073380Member"
      decimals="INF"
      id="h_424663bf_be85_44d4_8bac_3bacdbde032e"
      unitRef="USD">10580</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20180331_C000073380Member"
      decimals="INF"
      id="h_5dabc3f6_9a84_4967_b948_c7c7e0d3f88e"
      unitRef="USD">10159</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20200331_C000073380Member"
      decimals="INF"
      id="h_6884c970_8c90_48e2_ae28_e7fc74a9f3ed"
      unitRef="USD">10565</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20240331_C000073380Member"
      decimals="INF"
      id="h_78873f98_7e75_4db0_8cee_3b2214b8d41c"
      unitRef="USD">10814</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20190331_C000073380Member"
      decimals="INF"
      id="h_85e7c3b9_8b51_4884_973b_9a252c1d0262"
      unitRef="USD">10404</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20160331_C000073380Member"
      decimals="INF"
      id="h_9f7e84b6_a7c7_4465_bf36_6a8764b26b9f"
      unitRef="USD">10120</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20170331_C000073380Member"
      decimals="INF"
      id="h_ac2551cb_71f3_472a_88bd_87faf2701a5e"
      unitRef="USD">10140</oef:AcctVal>
    <oef:AcctVal
      contextRef="TI20210331_C000073380Member"
      decimals="INF"
      id="h_ef3a0e20_3840_43ec_8b7c_62812a5a7def"
      unitRef="USD">10860</oef:AcctVal>
    <dei:EntityCentralIndexKey
      contextRef="DefaultContext"
      id="h1_81051c23_dbd8_4cde_b438_ff9fc6792d62">0000810305</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="DefaultContext"
      id="h3_28fca139_388c_4660_b1a5_37a5e51e03d0">false</dei:AmendmentFlag>
    <dei:EntityInvCompanyType
      contextRef="DefaultContext"
      id="h_1_a10a724d-2524-f060-47ae-bb2bc621694e">N-1A</dei:EntityInvCompanyType>
    <dei:DocumentType
      contextRef="DefaultContext"
      id="t_1_062c3501_fcec_29c9_546d_1718cb14c6f1">N-CSR</dei:DocumentType>
    <dei:EntityRegistrantName
      contextRef="DefaultContext"
      id="t_2_fe012231_a6c7_ecf9_28e5_21d2abf546a7">BNY Mellon Short Term Municipal Bond Fund</dei:EntityRegistrantName>
    <dei:DocumentPeriodEndDate
      contextRef="DefaultContext"
      id="t_3_f25f4e38_f970_9e44_e366_c347cbba1829">2025-03-31</dei:DocumentPeriodEndDate>
    <oef:FundName
      contextRef="FY2025_C000079007Member"
      id="t_1_6e6b09c4_a24d_5ece_b7a5_c800a75c2cdc">BNY Mellon Short Term Municipal Bond Fund</oef:FundName>
    <oef:ClassName
      contextRef="FY2025_C000079007Member"
      id="t_2_33df0e52_dbde_9ace_15e1_0a359d9db113">Class A</oef:ClassName>
    <dei:TradingSymbol
      contextRef="FY2025_C000079007Member"
      id="t_3_1919487a_6de8_2ee6_285d_d4df638eab10">DMBAX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_4_0fa5873a_7dbd_b0d3_b1f9_bbb68ae76de9">This annual shareholder report contains important information about BNY Mellon Short Term Municipal Bond Fund (the &#x201c;Fund&#x201d;) for the period of April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="FY2025_C000079007Member"
      id="t_6_10fced5a_2c56_629a_9ff7_098c8cd01a0e">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_5_88f67d59_72dc_c522_9de3_770acedee1b6">You can find additional information about the Fund at &lt;span style="color: #000000; text-decoration-line: none; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; display: inline-block; line-height: 7.5pt; font-family: 'times new roman'; font-size: 10pt;"&gt;bny.com/investments/literaturecenter&lt;/span&gt;. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="FY2025_C000079007Member"
      id="t_7_7db1766d_9fd4_df10_ec53_1ac5fd1d3e18">bny.com/investments/literaturecenter</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="FY2025_C000079007Member"
      id="t_9_bebbf666_2f67_be16_f2c1_1e0ff681e67e">1-800-373-9387</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail
      contextRef="FY2025_C000079007Member"
      id="t_8_5c0495d5_1d68_6030_0038_f95fae0b3a1c">info@bny.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_10_3484dedd_34b5_80da_0ef5_6a0ae1fa0cb5">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 2pt;"&gt;&lt;b&gt;What were the Fund&#x2019;s costs for the last &lt;/b&gt; &lt;b&gt;year&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'times new roman'; color: #000000; font-size: 10pt; line-height: 11pt; margin-bottom: 3pt;"&gt;(based on a hypothetical $10,000 investment)&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: left; width: 25%; padding: 1pt 3pt 10pt 3pt;"&gt;Share Class&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: center; width: 30%; padding: 1pt 3pt 10pt 3pt;"&gt;Costs of a $10,000 investment&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: center; width: 40%; padding: 1pt 3pt 10pt 3pt;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; background-color: #e3ebed; height: 19pt;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: left; vertical-align: top; text-indent: -6pt; padding: 1pt 3pt 3pt 6pt;"&gt;Class &lt;span style="white-space: nowrap;"&gt;A&lt;sup style="vertical-align: baseline; position: relative; top: -0.7em; font-size: 5pt;"&gt;*&lt;/sup&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: center; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;65&lt;/td&gt;
&lt;td style="break-inside: avoid-page; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: center; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;0.64&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 22pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;*&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund&#x2019;s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;
</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="FY2025_C000079007Member"
      decimals="INF"
      id="h_1_032a065c_7deb_4cc1_8115_acc1b578c8e8"
      unitRef="USD">65</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="FY2025_C000079007Member"
      decimals="4"
      id="h_2_84f7666d_65f3_4177_8da5_2eaf8fdb2bcf"
      unitRef="pure">0.0064</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_26_a657772c_4352_bdfc_76bb_a7fcc921d4dd">
&lt;div style="margin-bottom: 9pt; width: 540pt; margin-left: 18pt;"&gt;
&lt;div style="break-inside: avoid;"&gt;
&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 4pt; margin-top: 0px;"&gt;&lt;b&gt;How did the Fund perform last &lt;/b&gt; &lt;b&gt;year&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;
&lt;ul style="break-inside: avoid; padding: 0; margin: 0;"&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;For the 12-month period ended March 31, 2025, the Fund&#x2019;s Class A&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;shares returned 2.95%.&lt;/div&gt;
&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 8pt;"&gt;In comparison, the Bloomberg Municipal Bond 1-3 Year Blend Index (the &#x201c;Index&#x201d;)&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;returned 3.48% for the same period.&lt;/div&gt;
&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
&lt;div style="break-inside: avoid;"&gt;
&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 4pt; margin-top: 0px;"&gt;&lt;b&gt;What affected the Fund&#x2019;s performance?&lt;/b&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;ul style="break-inside: avoid; padding: 0; margin: 0;"&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;The municipal bond market rose during the reporting period, driven by elevated yields. High-yield municipals and shorter-dated municipals outperformed investment-grade and longer-duration municipals.&lt;/div&gt;
&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;The Fund&#x2019;s performance relative to the Index benefited from its excess yield and exposure to lower-rated municipals.&lt;/div&gt;
&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 8pt;"&gt;Longer-dated exposure, as well as exposure to essential service issuers, detracted from relative returns.&lt;/div&gt;
&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;&lt;table cellpadding="0" cellspacing="0" style="width: 60%; border-collapse: collapse"&gt;
&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 100%; border: Black 1pt solid; font: 11pt/107% Calibri, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-bottom: 8pt; padding-left: 5.4pt; text-align: center"&gt;&lt;span style="font-family: Times New Roman, Times, Serif; font-size: 12pt; line-height: 107%"&gt;Not FDIC Insured. Not Bank-Guaranteed. May Lose Value &lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_23_d1e60ab2_01d9_0af0_ca86_3f827acefcfb">
&lt;div style="margin-top: 0px; padding-left: 3.5pt; padding-right: 3.5pt; font-family: 'cambria'; font-weight: bold; color: #00485e; font-size: 10pt; line-height: 12pt; padding-top: 5pt; margin-bottom: 0px;"&gt;&lt;b&gt; &lt;i&gt;How did the Fund perform over the past 10 years?&lt;/i&gt; &lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; padding-left: 3.5pt; padding-right: 3.5pt; font-family: 'times new roman'; color: #00485e; font-size: 10pt; line-height: 11pt; padding-top: 5pt; margin-bottom: 6pt;"&gt;&lt;b&gt;The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance.&lt;/b&gt; The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; margin-bottom: 3pt; font-weight: bold; text-transform: none;"&gt;&lt;b&gt;Cumulative Performance from &lt;/b&gt; &lt;b&gt;April 1&lt;/b&gt; &lt;b&gt;, &lt;/b&gt; &lt;b&gt;2015&lt;/b&gt; &lt;b&gt; through &lt;/b&gt; &lt;b&gt;March 31, 2025&lt;/b&gt; &lt;b&gt; &lt;/b&gt; &lt;br/&gt;&lt;b&gt;Initial Investment of $10,000&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-bottom: 6pt;"&gt;&lt;img alt="Fund Performance - Growth of 10K Chart" src="chartimages_9853092.jpg" style="display: block; margin-left: auto; margin-right: auto; width: 396pt;"/&gt; &lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'times new roman'; color: #000000; font-size: 10pt; line-height: 11pt; margin-bottom: 6.5pt;"&gt;The above graph compares a hypothetical $10,000 investment in the Fund&#x2019;s Class A&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;shares to a hypothetical investment of $10,000 made in each of the Bloomberg U.S. Municipal Bond Index (a broad-based index) and Bloomberg Municipal Bond 1-3 Year Blend Index on 3/31/2015. The performance shown takes into account the maximum initial sales charge on Class A shares and applicable fees and expenses of the Fund, including management fees and other expenses. The Fund&#x2019;s performance also assumes the reinvestment of dividends and capital gains. Unlike the Fund, the indexes are not subject to charges, fees and other expenses. Investors cannot invest directly in any index.&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 30pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px; font-family: 'cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0px;"&gt;*&lt;/div&gt;
&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;
</oef:LineGraphTableTextBlock>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="FY2025_C000079007Member"
      id="t_16_59d26d35_f185_83a0_1ead_25877a9d6807">The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_17_1677c8f6_0279_b143_31f2_88e975ac723d">The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_13_94bd1cff_c60f_a524_d2a7_6ff88231a87f">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 0px;" title="oef:AvgAnnlRtrTableTextBlock"&gt;&lt;b&gt;AVERAGE ANNUAL TOTAL RETURNS (AS OF &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: left; width: 60%; padding: 1pt 3pt 10pt 3pt;"&gt;Class A Shares&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;1YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;5YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;10YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;with Maximum Sales Charge - 2.50%&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;0.40&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;0.34&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;0.60&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;without Sales Charge&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;2.95&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;0.85&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;0.85&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Bloomberg U.S. Municipal Bond Index (broad-based index)&lt;sup style="vertical-align: baseline; position: relative; top: -0.7em; font-size: 5pt;"&gt;*&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.22&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.07&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;2.13&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Bloomberg Municipal Bond 1-3 Year Blend Index&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;3.48&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.43&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.40&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;


&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 30pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px; font-family: 'cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0px;"&gt;*&lt;/div&gt;
&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;

</oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_C000079007Member"
      id="t_19_d545ddc0_484c_ea9a_b9ff_7ae50cd01664">with Maximum Sales Charge - 2.50%</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000079007Member"
      decimals="4"
      id="h_6_c754a37c_7b9a_4cf1_8b69_c36f740334c1"
      unitRef="pure">0.0040</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000079007Member"
      decimals="4"
      id="h_7_60d4cd3f_fd03_4290_a141_2e38a5efed13"
      unitRef="pure">0.0034</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000079007Member"
      decimals="4"
      id="h_8_0c4a8caa_bd2d_4565_b240_e744aa263d45"
      unitRef="pure">0.0060</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_C000079007Member_WithoutSalesLoadMember"
      id="t_20_749bfc93_0c33_7fb3_7cdc_edbb62be6ef9">without Sales Charge</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000079007Member_WithoutSalesLoadMember"
      decimals="4"
      id="h_9_b4154a38_b077_4b19_a231_3b2a558c6ae9"
      unitRef="pure">0.0295</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000079007Member_WithoutSalesLoadMember"
      decimals="4"
      id="h_10_00d242ed_9cd2_4726_be6e_a4c8e6c20d2a"
      unitRef="pure">0.0085</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000079007Member_WithoutSalesLoadMember"
      decimals="4"
      id="h_11_382758f2_8441_43cf_a7bd_4c4d4ef4de7d"
      unitRef="pure">0.0085</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_BloombergUSMunicipalBondIndexMember"
      id="t_22_8ffc7ba3_d95d_12f2_8701_a7ff5be7e1d7">Bloomberg U.S. Municipal Bond Index (broad-based index)</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_12_f7fc3aa9_511c_4d0e_8978_58eb4c99b53d"
      unitRef="pure">0.0122</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_13_20d15089_9897_4ef1_affd_4a6c81fd565d"
      unitRef="pure">0.0107</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_14_75dd4a3f_9772_498c_924a_d4eba7a8de54"
      unitRef="pure">0.0213</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_BloombergMunicipalBond13YearBlendIndexMember"
      id="t_27_0233d919_d11e_4809_b75c_52dd62f5cd24">Bloomberg Municipal Bond 1-3 Year Blend Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_15_e34c2fc9_3514_4102_99f4_7627f974aa48"
      unitRef="pure">0.0348</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_22_09c90dc2_81d9_e524_7f8e_cd65e5cd6be2"
      unitRef="pure">0.0143</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_23_bdb6e8c7_be6b_7efc_6a27_cc20f962a3c6"
      unitRef="pure">0.0140</oef:AvgAnnlRtrPct>
    <oef:PerfTableMarketIndexChngdTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_25_1512fc44_ac73_71c2_f16c_4b074c1bc4e8">In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.</oef:PerfTableMarketIndexChngdTextBlock>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_18_bfd39f0a_b3fe_5950_8fe6_a495a28acaa2">For more current information visit bny.com/investments/literaturecenter.</oef:UpdPerfInfoLocationTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_14_7b980cba_0b38_f0cf_f662_59527f2abe9b">
&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-top: 0px; margin-bottom: 0px;"&gt;&lt;b&gt;KEY FUND STATISTICS (AS OF &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Fund Size (Millions)&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Number of Holdings&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;Total Advisory Fee Paid During&lt;br/&gt;Period&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Annual Portfolio Turnover&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; background-color: #e3ebed; height: 19pt;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;130&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;106&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;278,525&lt;/td&gt;
&lt;td style="break-inside: avoid-page; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;41.53&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;&lt;table cellpadding="0" cellspacing="0" style="width: 60%; border-collapse: collapse"&gt;
&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 100%; border: Black 1pt solid; font: 11pt/107% Calibri, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-bottom: 8pt; padding-left: 5.4pt; text-align: center"&gt;&lt;span style="font-family: Times New Roman, Times, Serif; font-size: 12pt; line-height: 107%"&gt;Not FDIC Insured. Not Bank-Guaranteed. May Lose Value &lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20250331_C000079007Member"
      decimals="INF"
      id="h_18_5a0b2b40_ab5f_4d55_a2e8_7adb596f03f9"
      unitRef="USD">130000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20250331_C000079007Member"
      decimals="INF"
      id="h_19_5b418bba_16c6_4384_8c46_1cf7e18ca1c8"
      unitRef="Holding">106</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="FY2025_C000079007Member"
      decimals="INF"
      id="h_20_ced80dc2_0c5d_489b_bcda_2af23a99e462"
      unitRef="USD">278525</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="FY2025_C000079007Member"
      decimals="4"
      id="h_21_2291cdfb_860a_46c4_9de1_b3d82d79bccf"
      unitRef="pure">0.4153</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="FY2025_C000079007Member"
      id="t_15_cd29e60a_5150_8925_b2f1_24c14c62f58e">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; text-transform: uppercase; font-size: 9pt; margin-bottom: 3pt; font-weight: bold;"&gt;&lt;b&gt;Portfolio Holdings (as of &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; font-weight: bold; margin-bottom: 0px; text-transform: none;"&gt;&lt;b&gt;Sector Allocation (Based on Net Assets)&lt;/b&gt;&lt;/div&gt;

&lt;div style="width: 540pt; margin-left: 18pt; margin-bottom: 12pt;"&gt;&lt;img alt="Graphical Representation - Top N Holdings Chart" src="chartimages_9853121.jpg" style="margin-left: 50pt; width: 437pt;"/&gt; &lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; font-weight: bold; margin-bottom: 0px; text-transform: none; page-break-after: avoid;"&gt;&lt;b&gt;State Allocation (Based on Net Assets)&lt;/b&gt;&lt;/div&gt;

&lt;div style="width: 540pt; margin-left: 18pt; margin-bottom: 6pt;"&gt;&lt;img alt="Graphical Representation - Allocation 1 Chart" src="chartimages_9853097.jpg" style="margin-left: 29pt; width: 437pt;"/&gt; &lt;/div&gt;
</oef:HoldingsTableTextBlock>
    <oef:FundName
      contextRef="FY2025_C000000147Member"
      id="t_19_0f7b9a60_d2cd_129b_e742_46038fd62c5b">BNY Mellon Short Term Municipal Bond Fund</oef:FundName>
    <oef:ClassName
      contextRef="FY2025_C000000147Member"
      id="t_2_c0f1171c_256f_1fd4_7191_0ec629786d24">Class D</oef:ClassName>
    <dei:TradingSymbol
      contextRef="FY2025_C000000147Member"
      id="t_3_ded376d1_5b70_a7ac_6676_ded28b6b6ac3">DSIBX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_4_0962ebb9_adb1_e68d_909b_ae9155df6fe1">This annual shareholder report contains important information about BNY Mellon Short Term Municipal Bond Fund (the &#x201c;Fund&#x201d;) for the period of April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="FY2025_C000000147Member"
      id="t_5_cc79f87e_b9c0_1970_ac8c_908ad9c9ac0d">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_6_4e8e48eb_1826_724d_0850_002b081e8e3f">You can find additional information about the Fund at &lt;span style="color: #000000; text-decoration-line: none; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; display: inline-block; line-height: 7.5pt; font-family: 'times new roman'; font-size: 10pt;"&gt;bny.com/investments/literaturecenter&lt;/span&gt;. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="FY2025_C000000147Member"
      id="t_7_ef7a44c2_cb82_e353_e676_e97ce0accd53">bny.com/investments/literaturecenter</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="FY2025_C000000147Member"
      id="t_8_73a71439_2185_14c0_c3c9_e691c4aaa9c1">1-800-373-9387</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail
      contextRef="FY2025_C000000147Member"
      id="t_9_5ad95cc8_b171_904c_fb9f_1f539d5ed4cc">info@bny.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_23_ac2461e0_85b4_1849_a757_a72c3026725a">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 2pt;"&gt;&lt;b&gt;What were the Fund&#x2019;s costs for the last &lt;/b&gt; &lt;b&gt;year&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'times new roman'; color: #000000; font-size: 10pt; line-height: 11pt; margin-bottom: 3pt;"&gt;(based on a hypothetical $10,000 investment)&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: left; width: 25%; padding: 1pt 3pt 10pt 3pt;"&gt;Share Class&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: center; width: 30%; padding: 1pt 3pt 10pt 3pt;"&gt;Costs of a $10,000 investment&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: center; width: 40%; padding: 1pt 3pt 10pt 3pt;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; background-color: #e3ebed; height: 19pt;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: left; vertical-align: top; text-indent: -6pt; padding: 1pt 3pt 3pt 6pt;"&gt;Class &lt;span style="white-space: nowrap;"&gt;D&lt;sup style="vertical-align: baseline; position: relative; top: -0.7em; font-size: 5pt;"&gt;*&lt;/sup&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: center; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;50&lt;/td&gt;
&lt;td style="break-inside: avoid-page; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: center; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;0.49&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 22pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;*&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund&#x2019;s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;
</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="FY2025_C000000147Member"
      decimals="INF"
      id="h_22_21c70d0b_b349_467a_8984_6c3d328676a3"
      unitRef="USD">50</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="FY2025_C000000147Member"
      decimals="4"
      id="h_23_aed3f35d_78b9_43e0_a4df_6eab639b9539"
      unitRef="pure">0.0049</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_17_56c0c1d7_1cd1_f878_41e0_50250024a7b1">
&lt;div style="margin-bottom: 9pt; width: 540pt; margin-left: 18pt;"&gt;
&lt;div style="break-inside: avoid;"&gt;
&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 4pt; margin-top: 0px;"&gt;&lt;b&gt;How did the Fund perform last &lt;/b&gt; &lt;b&gt;year&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;
&lt;ul style="break-inside: avoid; padding: 0; margin: 0;"&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;For the 12-month period ended March 31, 2025, the Fund&#x2019;s Class D&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;shares returned 3.10%.&lt;/div&gt;
&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 8pt;"&gt;In comparison, the Bloomberg Municipal Bond 1-3 Year Blend Index (the &#x201c;Index&#x201d;)&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;returned 3.48% for the same period.&lt;/div&gt;
&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
&lt;div style="break-inside: avoid;"&gt;
&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 4pt; margin-top: 0px;"&gt;&lt;b&gt;What affected the Fund&#x2019;s performance?&lt;/b&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;ul style="break-inside: avoid; padding: 0; margin: 0;"&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;The municipal bond market rose during the reporting period, driven by elevated yields. High-yield municipals and shorter-dated municipals outperformed investment-grade and longer-duration municipals.&lt;/div&gt;
&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;The Fund&#x2019;s performance relative to the Index benefited from its excess yield and exposure to lower-rated municipals.&lt;/div&gt;
&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 8pt;"&gt;Longer-dated exposure, as well as exposure to essential service issuers, detracted from relative returns.&lt;/div&gt;
&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;&lt;table cellpadding="0" cellspacing="0" style="width: 60%; border-collapse: collapse"&gt;
&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 100%; border: Black 1pt solid; font: 11pt/107% Calibri, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-bottom: 8pt; padding-left: 5.4pt; text-align: center"&gt;&lt;span style="font-family: Times New Roman, Times, Serif; font-size: 12pt; line-height: 107%"&gt;Not FDIC Insured. Not Bank-Guaranteed. May Lose Value &lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_12_e45f78d0_005f_8a25_4532_1aa891f19749">
&lt;div style="margin-top: 0px; padding-left: 3.5pt; padding-right: 3.5pt; font-family: 'cambria'; font-weight: bold; color: #00485e; font-size: 10pt; line-height: 12pt; padding-top: 5pt; margin-bottom: 0px;"&gt;&lt;b&gt; &lt;i&gt;How did the Fund perform over the past 10 years?&lt;/i&gt; &lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; padding-left: 3.5pt; padding-right: 3.5pt; font-family: 'times new roman'; color: #00485e; font-size: 10pt; line-height: 11pt; padding-top: 5pt; margin-bottom: 6pt;"&gt;&lt;b&gt;The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance.&lt;/b&gt; The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; margin-bottom: 3pt; font-weight: bold; text-transform: none;"&gt;&lt;b&gt;Cumulative Performance from &lt;/b&gt; &lt;b&gt;April 1&lt;/b&gt; &lt;b&gt;, &lt;/b&gt; &lt;b&gt;2015&lt;/b&gt; &lt;b&gt; through &lt;/b&gt; &lt;b&gt;March 31, 2025&lt;/b&gt; &lt;b&gt; &lt;/b&gt; &lt;br/&gt;&lt;b&gt;Initial Investment of $10,000&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-bottom: 6pt;"&gt;&lt;img alt="Fund Performance - Growth of 10K Chart" src="chartimages_9853142.jpg" style="display: block; margin-left: auto; margin-right: auto; width: 396pt;"/&gt; &lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'times new roman'; color: #000000; font-size: 10pt; line-height: 11pt; margin-bottom: 6.5pt;"&gt;The above graph compares a hypothetical $10,000 investment in the Fund&#x2019;s Class D&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;shares to a hypothetical investment of $10,000 made in each of the Bloomberg U.S. Municipal Bond Index (a broad-based index) and Bloomberg Municipal Bond 1-3 Year Blend Index on 3/31/2015. The performance shown takes into account applicable fees and expenses of the Fund, including management fees,&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;12b-1&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;fees and other expenses. The Fund&#x2019;s performance also assumes the reinvestment of dividends and capital gains. Unlike the Fund, the indexes are not subject to charges, fees and other expenses. Investors cannot invest directly in any index.&lt;/div&gt;
&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 30pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px; font-family: 'cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0px;"&gt;*&lt;/div&gt;
&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;</oef:LineGraphTableTextBlock>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="FY2025_C000000147Member"
      id="t_18_c6ca5584_97a8_a172_dade_f270c6969805">The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_24_65713ee0_cd77_3190_72bf_9b474722ab0a">The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_13_8de95994_e4b9_c9fa_c434_b4c19e69d4e6">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 0px;"&gt;&lt;b&gt;AVERAGE ANNUAL TOTAL RETURNS (AS OF &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: left; width: 60%; padding: 1pt 3pt 10pt 3pt;"&gt;Share Class&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;1YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;5YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;10YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Class D&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;3.10&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.00&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.00&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Bloomberg U.S. Municipal Bond Index (broad-based index)&lt;sup style="vertical-align: baseline; position: relative; top: -0.7em; font-size: 5pt;"&gt;*&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.22&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.07&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;2.13&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Bloomberg Municipal Bond 1-3 Year Blend Index&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;3.48&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.43&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.40&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 30pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px; font-family: 'cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0px;"&gt;*&lt;/div&gt;
&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;
</oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_C000000147Member"
      id="t_16_3c3f23b8_f79b_e47f_ecdf_dfc8a20f1d85">Class D</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000000147Member"
      decimals="4"
      id="h_24_036432f6_5bc7_4cd5_b223_5dae27134f3d"
      unitRef="pure">0.0310</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000000147Member"
      decimals="4"
      id="h_25_5e6ed8dd_7915_493f_a81b_077557b9dffd"
      unitRef="pure">0.0100</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000000147Member"
      decimals="4"
      id="h_26_a2ccbd00_5885_4823_a98d_9669faf55d40"
      unitRef="pure">0.0100</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_BloombergUSMunicipalBondIndexMember"
      id="t_21_7504cd25_b5f0_4beb_7ab3_6b20b71b9721">Bloomberg U.S. Municipal Bond Index (broad-based index)</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_27_1b6681f8_2398_484f_8133_898c72dfe3ea"
      unitRef="pure">0.0122</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_28_d67e04ba_cca4_43ab_91b7_c3b23dd7ff52"
      unitRef="pure">0.0107</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_29_29a99de2_00a7_4ad0_b825_c67ce5143c6f"
      unitRef="pure">0.0213</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_BloombergMunicipalBond13YearBlendIndexMember"
      id="t_20_a083b7d3_f253_e615_303a_b778935e99fc">Bloomberg Municipal Bond 1-3 Year Blend Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_30_76efeb8d_9045_4fff_8fc2_9d3b4fa36983"
      unitRef="pure">0.0348</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_31_5a8408c8_65cd_4101_aa92_3eba66ea1a71"
      unitRef="pure">0.0143</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_32_23f3fe25_d0f2_46df_b935_065afdedbc9f"
      unitRef="pure">0.0140</oef:AvgAnnlRtrPct>
    <oef:PerfTableMarketIndexChngdTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_25_f16ae458_934d_8a5b_9cb0_2588112f4b00">In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.</oef:PerfTableMarketIndexChngdTextBlock>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_22_84804d54_128b_130b_3d90_2c2a72eea402">For more current information visitbny.com/investments/literaturecenter&#160;.</oef:UpdPerfInfoLocationTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_14_c53fc261_bad5_c4e3_b5f6_437815552bff">
&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-top: 0px; margin-bottom: 0px;"&gt;&lt;b&gt;KEY FUND STATISTICS (AS OF &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Fund Size (Millions)&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Number of Holdings&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;Total Advisory Fee Paid During&lt;br/&gt;Period&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Annual Portfolio Turnover&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; background-color: #e3ebed; height: 19pt;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;130&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;106&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;278,525&lt;/td&gt;
&lt;td style="break-inside: avoid-page; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;41.53&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;&lt;table cellpadding="0" cellspacing="0" style="width: 60%; border-collapse: collapse"&gt;
&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 100%; border: Black 1pt solid; font: 11pt/107% Calibri, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-bottom: 8pt; padding-left: 5.4pt; text-align: center"&gt;&lt;span style="font-family: Times New Roman, Times, Serif; font-size: 12pt; line-height: 107%"&gt;Not FDIC Insured. Not Bank-Guaranteed. May Lose Value &lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20250331_C000000147Member"
      decimals="INF"
      id="h_33_31ef5644_9d65_4ea1_8706_ef5302ac4a31"
      unitRef="USD">130000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20250331_C000000147Member"
      decimals="INF"
      id="h_34_d357358e_5549_415d_8f8d_d8fd32ca4302"
      unitRef="Holding">106</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="FY2025_C000000147Member"
      decimals="INF"
      id="h_35_61c01515_83ce_4871_b33f_90ae326f36c2"
      unitRef="USD">278525</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="FY2025_C000000147Member"
      decimals="4"
      id="h_36_55b12823_bb85_40f7_8e07_509913735ffd"
      unitRef="pure">0.4153</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="FY2025_C000000147Member"
      id="t_15_8d39845f_90a2_fc29_99c2_ca2d1ff4f547">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; text-transform: uppercase; font-size: 9pt; margin-bottom: 3pt; font-weight: bold;"&gt;&lt;b&gt;Portfolio Holdings (as of &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; font-weight: bold; margin-bottom: 0px; text-transform: none;"&gt;&lt;b&gt;Sector Allocation (Based on Net Assets)&lt;/b&gt;&lt;/div&gt;

&lt;div style="width: 540pt; margin-left: 18pt; margin-bottom: 12pt;"&gt;&lt;img alt="Graphical Representation - Top N Holdings Chart" src="chartimages_9853171.jpg" style="margin-left: 50pt; width: 437pt;"/&gt; &lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; font-weight: bold; margin-bottom: 0px; text-transform: none; page-break-after: avoid;"&gt;&lt;b&gt;State Allocation (Based on Net Assets)&lt;/b&gt;&lt;/div&gt;

&lt;div style="width: 540pt; margin-left: 18pt; margin-bottom: 6pt;"&gt;&lt;img alt="Graphical Representation - Allocation 1 Chart" src="chartimages_9853147.jpg" style="margin-left: 29pt; width: 437pt;"/&gt; &lt;/div&gt;
</oef:HoldingsTableTextBlock>
    <oef:FundName
      contextRef="FY2025_C000073380Member"
      id="t_1_ca6a9337_7410_c202_080e_b845d21d80a5">BNY Mellon Short Term Municipal Bond Fund</oef:FundName>
    <oef:ClassName
      contextRef="FY2025_C000073380Member"
      id="t_2_b343b3d6_a9fb_e553_5231_89794bf60805">Class I</oef:ClassName>
    <dei:TradingSymbol
      contextRef="FY2025_C000073380Member"
      id="t_3_8962f4e5_99aa_d55e_65a6_e6ee5de43070">DIMIX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_5_a5b34ce7_40f4_20f9_fdf7_4c9545e8c00b">This annual shareholder report contains important information about BNY Mellon Short Term Municipal Bond Fund (the &#x201c;Fund&#x201d;) for the period of April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="FY2025_C000073380Member"
      id="t_4_49074f8b_4cde_1b8b_60b0_633aa132afdc">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_6_b6bac6fa_acb5_bd55_d087_33fcdfdd858a">You can find additional information about the Fund at &lt;span style="color: #000000; text-decoration-line: none; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; display: inline-block; line-height: 7.5pt; font-family: 'times new roman'; font-size: 10pt;"&gt;bny.com/investments/literaturecenter&lt;/span&gt;. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="FY2025_C000073380Member"
      id="t_7_87e0b0bb_6236_7b17_3837_8ac179dbd599">bny.com/investments/literaturecenter</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="FY2025_C000073380Member"
      id="t_8_5b3c84ef_0d5a_82eb_c2e1_54d8bdcd2641">1-800-373-9387</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail
      contextRef="FY2025_C000073380Member"
      id="t_9_763380cc_bd6e_b8ff_391b_bd8751eee466">info@bny.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_10_32740211_0a9f_18e1_66f3_691cb70ea159">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 2pt;"&gt;&lt;b&gt;What were the Fund&#x2019;s costs for the last &lt;/b&gt; &lt;b&gt;year&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'times new roman'; color: #000000; font-size: 10pt; line-height: 11pt; margin-bottom: 3pt;"&gt;(based on a hypothetical $10,000 investment)&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: left; width: 25%; padding: 1pt 3pt 10pt 3pt;"&gt;Share Class&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: center; width: 30%; padding: 1pt 3pt 10pt 3pt;"&gt;Costs of a $10,000 investment&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: center; width: 40%; padding: 1pt 3pt 10pt 3pt;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; background-color: #e3ebed; height: 19pt;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: left; vertical-align: top; text-indent: -6pt; padding: 1pt 3pt 3pt 6pt;"&gt;Class &lt;span style="white-space: nowrap;"&gt;I&lt;sup style="vertical-align: baseline; position: relative; top: -0.7em; font-size: 5pt;"&gt;*&lt;/sup&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: center; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;40&lt;/td&gt;
&lt;td style="break-inside: avoid-page; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: center; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;0.39&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 22pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;*&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund&#x2019;s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;
</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="FY2025_C000073380Member"
      decimals="INF"
      id="h_37_df22c241_b0eb_4035_b0e7_a655f851e2ee"
      unitRef="USD">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="FY2025_C000073380Member"
      decimals="4"
      id="h_38_f944e4a7_7235_4490_81e9_57868e986603"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_22_f2a52275_d1ab_25ff_845e_890c9da2a844">&lt;div style="margin-bottom: 9pt; width: 540pt; margin-left: 18pt;"&gt;
&lt;div style="break-inside: avoid;"&gt;

&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 4pt; margin-top: 0px;"&gt;&lt;b&gt;How did the Fund perform last &lt;/b&gt; &lt;b&gt;year&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;

&lt;ul style="break-inside: avoid; padding: 0; margin: 0;"&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;

&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;For the 12-month period ended March 31, 2025, the Fund&#x2019;s Class I&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;shares returned 3.20%.&lt;/div&gt;

&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;

&lt;div style="margin-top: 0px; margin-bottom: 8pt;"&gt;In comparison, the Bloomberg Municipal Bond 1-3 Year Blend Index (the &#x201c;Index&#x201d;)&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;returned 3.48% for the same period.&lt;/div&gt;

&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
&lt;div style="break-inside: avoid;"&gt;

&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 4pt; margin-top: 0px;"&gt;&lt;b&gt;What affected the Fund&#x2019;s performance?&lt;/b&gt;&lt;/div&gt;

&lt;/div&gt;
&lt;ul style="break-inside: avoid; padding: 0; margin: 0;"&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;

&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;The municipal bond market rose during the reporting period, driven by elevated yields. High-yield municipals and shorter-dated municipals outperformed investment-grade and longer-duration municipals.&lt;/div&gt;

&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;

&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;The Fund&#x2019;s performance relative to the Index benefited from its excess yield and exposure to lower-rated municipals.&lt;/div&gt;

&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;

&lt;div style="margin-top: 0px; margin-bottom: 8pt;"&gt;Longer-dated exposure, as well as exposure to essential service issuers, detracted from relative returns.&lt;/div&gt;

&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;&lt;table cellpadding="0" cellspacing="0" style="width: 60%; border-collapse: collapse"&gt;
&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 100%; border: Black 1pt solid; font: 11pt/107% Calibri, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-bottom: 8pt; padding-left: 5.4pt; text-align: center"&gt;&lt;span style="font-family: Times New Roman, Times, Serif; font-size: 12pt; line-height: 107%"&gt;Not FDIC Insured. Not Bank-Guaranteed. May Lose Value &lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;
</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_12_9b50d94a_8849_7600_ac95_9ea48d0a196d">
&lt;div style="margin-top: 0px; padding-left: 3.5pt; padding-right: 3.5pt; font-family: 'cambria'; font-weight: bold; color: #00485e; font-size: 10pt; line-height: 12pt; padding-top: 5pt; margin-bottom: 0px;"&gt;&lt;b&gt; &lt;i&gt;How did the Fund perform over the past 10 years?&lt;/i&gt; &lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; padding-left: 3.5pt; padding-right: 3.5pt; font-family: 'times new roman'; color: #00485e; font-size: 10pt; line-height: 11pt; padding-top: 5pt; margin-bottom: 6pt;"&gt;&lt;b&gt;The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance.&lt;/b&gt; The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; margin-bottom: 3pt; font-weight: bold; text-transform: none;"&gt;&lt;b&gt;Cumulative Performance from &lt;/b&gt; &lt;b&gt;April 1&lt;/b&gt; &lt;b&gt;, &lt;/b&gt; &lt;b&gt;2015&lt;/b&gt; &lt;b&gt; through &lt;/b&gt; &lt;b&gt;March 31, 2025&lt;/b&gt; &lt;b&gt; &lt;/b&gt; &lt;br/&gt;&lt;b&gt;Initial Investment of $10,000&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-bottom: 6pt;"&gt;&lt;img alt="Fund Performance - Growth of 10K Chart" src="chartimages_9853192.jpg" style="display: block; margin-left: auto; margin-right: auto; width: 396pt;"/&gt; &lt;/div&gt;
&lt;div style="margin-top: 0px; font-family: 'times new roman'; color: #000000; font-size: 10pt; line-height: 11pt; margin-bottom: 6.5pt;"&gt;The above graph compares a hypothetical $10,000 investment in the Fund&#x2019;s Class I&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;shares to a hypothetical investment of $10,000 made in each of the Bloomberg U.S. Municipal Bond Index (a broad-based index) and Bloomberg Municipal Bond 1-3 Year Blend Index on 3/31/2015. The performance shown takes into account applicable fees and expenses of the Fund, including management fees and other expenses. The Fund&#x2019;s performance also assumes the reinvestment of dividends and capital gains. Unlike the Fund, the indexes are not subject to charges, fees and other expenses. Investors cannot invest directly in any index.&lt;/div&gt;&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 30pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px; font-family: 'cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0px;"&gt;*&lt;/div&gt;
&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;</oef:LineGraphTableTextBlock>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="FY2025_C000073380Member"
      id="t_20_0796ca6c_08b4_b5c6_a2ba_adbcf92fed36">The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_21_1254b1b8_8ac7_f657_08e6_12bb0ffe9be1">The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_13_dcd71e08_4ae8_b940_ed6f_bab13f4e429b">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 0px;"&gt;&lt;b&gt;AVERAGE ANNUAL TOTAL RETURNS (AS OF &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: left; width: 60%; padding: 1pt 3pt 10pt 3pt;"&gt;Share Class&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;1YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;5YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;10YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Class I&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;3.20&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.10&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.10&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Bloomberg U.S. Municipal Bond Index (broad-based index)&lt;sup style="vertical-align: baseline; position: relative; top: -0.7em; font-size: 5pt;"&gt;*&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.22&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.07&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;2.13&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Bloomberg Municipal Bond 1-3 Year Blend Index&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;3.48&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.43&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.40&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 30pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px; font-family: 'cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0px;"&gt;*&lt;/div&gt;
&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;
</oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_C000073380Member"
      id="t_14_8ca821ea_fdf1_ed4e_2269_d0b7572b97dc">Class I</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000073380Member"
      decimals="4"
      id="h_39_00e831c3_fbd2_45bd_b466_8b61ec9b50f9"
      unitRef="pure">0.0320</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000073380Member"
      decimals="4"
      id="h_40_f10944f0_cc73_4a30_a14a_857ec893a6ad"
      unitRef="pure">0.0110</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000073380Member"
      decimals="4"
      id="h_41_ba067e2c_9e80_47b0_ae49_83dbfd5470d8"
      unitRef="pure">0.0110</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_BloombergUSMunicipalBondIndexMember"
      id="t_15_8744e781_f132_8961_975b_a9f3625195cd">Bloomberg U.S. Municipal Bond Index (broad-based index)</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_42_7a6ab600_8e27_4800_b70b_12b6399b41e7"
      unitRef="pure">0.0122</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_43_b489135b_60c5_47f5_bbbb_2c2d63049b97"
      unitRef="pure">0.0107</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_44_db82b31c_f72e_4156_80eb_f0354da2f5dc"
      unitRef="pure">0.0213</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_BloombergMunicipalBond13YearBlendIndexMember"
      id="t_16_37d10629_feb1_f740_c43d_8be26670c031">Bloomberg Municipal Bond 1-3 Year Blend Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_45_5dffe022_6080_43cb_916d_f0ae0115071a"
      unitRef="pure">0.0348</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_46_af9774c1_55db_4e3e_8b98_2cd0542bb4e7"
      unitRef="pure">0.0143</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_47_6479ebd2_4563_4cf2_90b4_dee0db2a5292"
      unitRef="pure">0.0140</oef:AvgAnnlRtrPct>
    <oef:PerfTableMarketIndexChngdTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_23_73e01618_6a0d_43b9_cfe9_6b08ad5a29bd">In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.</oef:PerfTableMarketIndexChngdTextBlock>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_17_ca5b0791_5f5c_f06e_926c_06042c7970dc">For more current information visitbny.com/investments/literaturecenter.</oef:UpdPerfInfoLocationTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_18_a64a1eba_f0e5_ef3c_7889_3da436f45ee2">&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-top: 0px; margin-bottom: 0px;"&gt;&lt;b&gt;KEY FUND STATISTICS (AS OF &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Fund Size (Millions)&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Number of Holdings&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;Total Advisory Fee Paid During&lt;br/&gt;Period&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Annual Portfolio Turnover&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; background-color: #e3ebed; height: 19pt;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;130&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;106&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;278,525&lt;/td&gt;
&lt;td style="break-inside: avoid-page; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;41.53&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;&lt;table cellpadding="0" cellspacing="0" style="width: 60%; border-collapse: collapse"&gt;
&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 100%; border: Black 1pt solid; font: 11pt/107% Calibri, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-bottom: 8pt; padding-left: 5.4pt; text-align: center"&gt;&lt;span style="font-family: Times New Roman, Times, Serif; font-size: 12pt; line-height: 107%"&gt;Not FDIC Insured. Not Bank-Guaranteed. May Lose Value &lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;
</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20250331_C000073380Member"
      decimals="INF"
      id="h_48_12e4e733_687d_48a1_b5a7_3729528ee2b7"
      unitRef="USD">130000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20250331_C000073380Member"
      decimals="INF"
      id="h_49_513bfc83_2638_4f43_86ce_78968ae4bc12"
      unitRef="Holding">106</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="FY2025_C000073380Member"
      decimals="INF"
      id="h_50_5403a739_750d_4522_84a9_4726e2fe3d9e"
      unitRef="USD">278525</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="FY2025_C000073380Member"
      decimals="4"
      id="h_51_88898a17_8734_4f00_b05f_1f43e0d6ce1e"
      unitRef="pure">0.4153</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="FY2025_C000073380Member"
      id="t_19_d3f87752_d87f_65f1_eecf_349a63a6f4a1">&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; text-transform: uppercase; font-size: 9pt; margin-bottom: 3pt; font-weight: bold;"&gt;&lt;b&gt;Portfolio Holdings (as of &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; font-weight: bold; margin-bottom: 0px; text-transform: none;"&gt;&lt;b&gt;Sector Allocation (Based on Net Assets)&lt;/b&gt;&lt;/div&gt;&lt;div style="width: 540pt; margin-left: 18pt; margin-bottom: 12pt;"&gt;&lt;img alt="Graphical Representation - Top N Holdings Chart" src="chartimages_9853221.jpg" style="margin-left: 50pt; width: 437pt;"/&gt; &lt;/div&gt;&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; font-weight: bold; margin-bottom: 0px; text-transform: none; page-break-after: avoid;"&gt;&lt;b&gt;State Allocation (Based on Net Assets)&lt;/b&gt;&lt;/div&gt;&lt;div style="width: 540pt; margin-left: 18pt; margin-bottom: 6pt;"&gt;&lt;img alt="Graphical Representation - Allocation 1 Chart" src="chartimages_9853197.jpg" style="margin-left: 29pt; width: 437pt;"/&gt; &lt;/div&gt;</oef:HoldingsTableTextBlock>
    <oef:FundName
      contextRef="FY2025_C000130293Member"
      id="t_1_7da11dd3_2a57_a19a_f3bc_1b28c15b13dd">BNY Mellon Short Term Municipal Bond Fund</oef:FundName>
    <oef:ClassName
      contextRef="FY2025_C000130293Member"
      id="t_2_49847dc8_e75d_5530_076e_9728ab8c440b">Class Y</oef:ClassName>
    <dei:TradingSymbol
      contextRef="FY2025_C000130293Member"
      id="t_3_82275a0d_8386_343e_77e1_fadd4cd69d41">DMYBX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_4_1e738e8b_8b40_4cf8_6142_00d7677c84c5">This annual shareholder report contains important information about BNY Mellon Short Term Municipal Bond Fund (the &#x201c;Fund&#x201d;) for the period of April 1, 2024 to March 31, 2025.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="FY2025_C000130293Member"
      id="t_5_a5895f67_f6e0_74b3_5956_9bb6e01e1359">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_6_24d1467b_dc95_90d0_f163_b6fd955286f3">You can find additional information about the Fund at &lt;span style="color: #000000; text-decoration-line: none; border-bottom-color: #000000; border-bottom-style: solid; border-bottom-width: 0.5pt; display: inline-block; line-height: 7.5pt; font-family: 'times new roman'; font-size: 10pt;"&gt;bny.com/investments/literaturecenter&lt;/span&gt;. You can also request this information by calling 1-800-373-9387 (inside the U.S. only) or by sending an e-mail request to info@bny.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="FY2025_C000130293Member"
      id="t_7_edba66ab_2ede_9414_5160_d74476998081">bny.com/investments/literaturecenter</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="FY2025_C000130293Member"
      id="t_8_7136586a_7c17_b5fd_dfce_a7effda78cfb">1-800-373-9387</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail
      contextRef="FY2025_C000130293Member"
      id="t_9_5973eea2_5c93_df3e_0ceb_466d97f28e25">info@bny.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_10_8244752e_1b1a_749a_d306_09a39c21673d">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 2pt;"&gt;&lt;b&gt;What were the Fund&#x2019;s costs for the last &lt;/b&gt; &lt;b&gt;year&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'times new roman'; color: #000000; font-size: 10pt; line-height: 11pt; margin-bottom: 3pt;"&gt;(based on a hypothetical $10,000 investment)&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: left; width: 25%; padding: 1pt 3pt 10pt 3pt;"&gt;Share Class&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: center; width: 30%; padding: 1pt 3pt 10pt 3pt;"&gt;Costs of a $10,000 investment&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: center; width: 40%; padding: 1pt 3pt 10pt 3pt;"&gt;Costs paid as a percentage of a $10,000 investment&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; background-color: #e3ebed; height: 19pt;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: left; vertical-align: top; text-indent: -6pt; padding: 1pt 3pt 3pt 6pt;"&gt;Class &lt;span style="white-space: nowrap;"&gt;Y&lt;sup style="vertical-align: baseline; position: relative; top: -0.7em; font-size: 5pt;"&gt;*&lt;/sup&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: center; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;40&lt;/td&gt;
&lt;td style="break-inside: avoid-page; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; text-align: center; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;0.39&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 22pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;*&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund&#x2019;s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;
</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="FY2025_C000130293Member"
      decimals="INF"
      id="h_52_2f5c9ada_850d_43d2_b9cd_327a7203345f"
      unitRef="USD">40</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="FY2025_C000130293Member"
      decimals="4"
      id="h_53_6228f971_e9bd_4140_8e37_4832f6d517c6"
      unitRef="pure">0.0039</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_11_9778180a_a8b8_bcd0_2e06_66e3f52f8625">
&lt;div style="margin-bottom: 9pt; width: 540pt; margin-left: 18pt;"&gt;
&lt;div style="break-inside: avoid;"&gt;
&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 4pt; margin-top: 0px;"&gt;&lt;b&gt;How did the Fund perform last &lt;/b&gt; &lt;b&gt;year&lt;/b&gt; &lt;b&gt;?&lt;/b&gt;&lt;/div&gt;
&lt;ul style="break-inside: avoid; padding: 0; margin: 0;"&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;For the 12-month period ended March 31, 2025, the Fund&#x2019;s Class Y&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;shares returned 3.27%.&lt;/div&gt;
&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 8pt;"&gt;In comparison, the Bloomberg Municipal Bond 1-3 Year Blend Index (the &#x201c;Index&#x201d;)&lt;span style="white-space: nowrap;"&gt;&#160;&lt;/span&gt;returned 3.48% for the same period.&lt;/div&gt;
&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
&lt;div style="break-inside: avoid;"&gt;
&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 4pt; margin-top: 0px;"&gt;&lt;b&gt;What affected the Fund&#x2019;s performance?&lt;/b&gt;&lt;/div&gt;
&lt;/div&gt;
&lt;ul style="break-inside: avoid; padding: 0; margin: 0;"&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;The municipal bond market rose during the reporting period, driven by elevated yields. High-yield municipals and shorter-dated municipals outperformed investment-grade and longer-duration municipals.&lt;/div&gt;
&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px;"&gt;The Fund&#x2019;s performance relative to the Index benefited from its excess yield and exposure to lower-rated municipals.&lt;/div&gt;
&lt;/li&gt;
&lt;li style="padding-left: 3pt; margin-left: 7pt; font-family: 'Times New Roman'; color: #000000; font-size: 10pt; line-height: 11pt; list-style-type: disc; margin-bottom: 3pt;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 8pt;"&gt;Longer-dated exposure, as well as exposure to essential service issuers, detracted from relative returns.&lt;/div&gt;
&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;&lt;table cellpadding="0" cellspacing="0" style="width: 60%; border-collapse: collapse"&gt;
&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 100%; border: Black 1pt solid; font: 11pt/107% Calibri, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-bottom: 8pt; padding-left: 5.4pt; text-align: center"&gt;&lt;span style="font-family: Times New Roman, Times, Serif; font-size: 12pt; line-height: 107%"&gt;Not FDIC Insured. Not Bank-Guaranteed. May Lose Value &lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_14_fa5b601e_3485_17ee_fba8_3f3081c11c69">
&lt;div style="margin-top: 0px; padding-left: 3.5pt; padding-right: 3.5pt; font-family: 'cambria'; font-weight: bold; color: #00485e; font-size: 10pt; line-height: 12pt; padding-top: 5pt; margin-bottom: 0px;"&gt;&lt;b&gt; &lt;i&gt;How did the Fund perform over the past 10 years?&lt;/i&gt; &lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; padding-left: 3.5pt; padding-right: 3.5pt; font-family: 'times new roman'; color: #00485e; font-size: 10pt; line-height: 11pt; padding-top: 5pt; margin-bottom: 6pt;"&gt;&lt;b&gt;The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance.&lt;/b&gt; The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; margin-bottom: 3pt; font-weight: bold; text-transform: none;"&gt;&lt;b&gt;Cumulative Performance from &lt;/b&gt; &lt;b&gt;April 1&lt;/b&gt; &lt;b&gt;, &lt;/b&gt; &lt;b&gt;2015&lt;/b&gt; &lt;b&gt; through &lt;/b&gt; &lt;b&gt;March 31, 2025&lt;/b&gt; &lt;b&gt; &lt;/b&gt; &lt;br/&gt;&lt;b&gt;Initial Investment of $1,000,000&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-bottom: 6pt;"&gt;&lt;img alt="Fund Performance - Growth of 10K Chart" src="chartimages_9853242.jpg" style="display: block; margin-left: auto; margin-right: auto; width: 400pt;"/&gt; &lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'times new roman'; color: #000000; font-size: 10pt; line-height: 11pt; margin-bottom: 6.5pt;"&gt;The above graph compares a hypothetical $1,000,000 investment in the Fund&#x2019;s Class Y shares to a hypothetical investment of $1,000,000 made in each of the Bloomberg U.S. Municipal Bond Index (a broad-based index) and Bloomberg Municipal Bond 1-3 Year Blend Index on 3/31/2015. The performance shown takes into account applicable fees and expenses of the Fund, including management fees and other expenses. The Fund&#x2019;s performance also assumes the reinvestment of dividends and capital gains. Unlike the Fund, the indexes are not subject to charges, fees and other expenses. Investors cannot invest directly in any index.&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 30pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px; font-family: 'cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0px;"&gt;*&lt;/div&gt;
&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;
</oef:LineGraphTableTextBlock>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="FY2025_C000130293Member"
      id="t_20_9e531121_123b_9d25_b61d_2c802cf498c6">The Fund&#x2019;s past performance is not a good predictor of the Fund&#x2019;s future performance.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_21_53c18769_66a5_ef3b_dd6b_9c70ffdc790a">The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.</oef:NoDeductionOfTaxesTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_15_c5ba5857_9cfa_fd96_cc59_28c071f1257b">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-bottom: 0px;"&gt;&lt;b&gt;AVERAGE ANNUAL TOTAL RETURNS (AS OF &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; text-align: left; width: 60%; padding: 1pt 3pt 10pt 3pt;"&gt;Share Class&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;1YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;5YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;10YR&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; text-align: right; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Class Y&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;3.27&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.11&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.09&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Bloomberg U.S. Municipal Bond Index (broad-based index)&lt;sup style="vertical-align: baseline; position: relative; top: -0.7em; font-size: 5pt;"&gt;*&lt;/sup&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.22&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.07&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;2.13&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; background-color: #e3ebed; height: 19pt; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-weight: normal; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 3pt 3pt 3pt;"&gt;Bloomberg Municipal Bond 1-3 Year Blend Index&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;3.48&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.43&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: right; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; padding: 1pt 0 3pt 3pt;"&gt;1.40&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;td style="width: auto; break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; text-align: left; padding: 1pt 3pt 3pt 0;"&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;


&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page; margin-bottom: 30pt;"&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-family: 'Cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0;"&gt;
&lt;div style="margin-top: 0px; margin-bottom: 0px; font-family: 'cambria'; color: #000000; font-size: 5pt; line-height: normal; width: 10pt; text-align: left; vertical-align: super; padding: 0px;"&gt;*&lt;/div&gt;
&lt;/td&gt;
&lt;td style="break-inside: avoid-page; text-align: left; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: normal; vertical-align: top; padding: 0;"&gt;
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; font-size: 9pt; line-height: normal; text-align: left; margin-bottom: 0px; padding: 0px;"&gt;In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;

</oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_C000130293Member"
      id="t_19_406e7cd0_7fd0_bdeb_7e97_a153834431a6">Class Y</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_C000130293Member"
      decimals="4"
      id="h_54_84ed47c4_042e_4df9_96f9_a851b1159e47"
      unitRef="pure">0.0327</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_C000130293Member"
      decimals="4"
      id="h_55_c3798b98_8be5_4965_bbe8_e6b60b9a30f0"
      unitRef="pure">0.0111</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_C000130293Member"
      decimals="4"
      id="h_56_b80cd26b_c273_4c17_a138_8f78b5e5616f"
      unitRef="pure">0.0109</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_BloombergUSMunicipalBondIndexMember"
      id="t_26_a4d45460_90d7_0507_31e9_4a836ec2dca2">Bloomberg U.S. Municipal Bond Index (broad-based index)</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_57_67345bf8_7944_4fb7_b726_0c837fb53f16"
      unitRef="pure">0.0122</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_58_dd8a9d96_911b_419d_9c19_7957b712d7b8"
      unitRef="pure">0.0107</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_BloombergUSMunicipalBondIndexMember"
      decimals="4"
      id="h_59_fe5f6553_afde_4f9d_b76d_b884c47e3a19"
      unitRef="pure">0.0213</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="FY2025_BloombergMunicipalBond13YearBlendIndexMember"
      id="t_27_3b58e2ed_8c8b_2c70_7694_72894d5ecf13">Bloomberg Municipal Bond 1-3 Year Blend Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="FY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_67_8c4e9143_4e9f_f447_bab7_6bbe0094e670"
      unitRef="pure">0.0348</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_61_7e970cab_2543_4eda_bf87_024ee6201717"
      unitRef="pure">0.0143</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2025_BloombergMunicipalBond13YearBlendIndexMember"
      decimals="4"
      id="h_68_3098d1be_5c6e_41ce_809b_171c1cf17410"
      unitRef="pure">0.0140</oef:AvgAnnlRtrPct>
    <oef:PerfTableMarketIndexChngdTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_24_fce1ec6e_3974_5346_58eb_5aaa98aa30bd">In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.</oef:PerfTableMarketIndexChngdTextBlock>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_25_e859ba16_e5bb_9af1_0ba3_41b83b08bb8d">For more current information visit bny.com/investments/literaturecenter&#160;.&#160;</oef:UpdPerfInfoLocationTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_17_2a18e378_828b_1797_04f7_205ca75cb422">
&lt;div style="font-family: 'cambria'; color: #000000; font-size: 11pt; font-weight: bold; margin-top: 0px; margin-bottom: 0px;"&gt;&lt;b&gt;KEY FUND STATISTICS (AS OF &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;

&lt;table style="width: 100%; border-collapse: collapse; break-inside: avoid-page;"&gt;

&lt;tr style="break-after: avoid; border-bottom-style: none; border-bottom-width: initial; break-inside: avoid-page; background-color: #00485e; height: auto; border-bottom-color: initial;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Fund Size (Millions)&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Number of Holdings&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;Total Advisory Fee Paid During&lt;br/&gt;Period&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #ffffff; font-size: 9pt; line-height: 9pt; font-weight: bold; text-align: center; width: 170pt; vertical-align: top; padding: 1pt 3pt 10pt 3pt;"&gt;&lt;br/&gt;Annual Portfolio Turnover&lt;/td&gt;
&lt;/tr&gt;
&lt;tr style="border-bottom-width: initial; border-bottom-style: none; break-inside: avoid-page; border-bottom-color: initial; background-color: #e3ebed; height: 19pt;"&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;130&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;106&lt;/td&gt;
&lt;td style="break-inside: avoid-page; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;&lt;span style="float: none;"&gt;$&lt;/span&gt;278,525&lt;/td&gt;
&lt;td style="break-inside: avoid-page; white-space: nowrap; font-family: 'Cambria'; color: #000000; font-size: 9pt; line-height: 9pt; vertical-align: top; border-left-color: initial; border-left-style: none; border-left-width: initial; text-align: center; width: 170pt; font-weight: normal; padding: 1pt 3pt 3pt 3pt;"&gt;41.53&lt;span&gt;%&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;

&lt;/table&gt;&lt;table cellpadding="0" cellspacing="0" style="width: 60%; border-collapse: collapse"&gt;
&lt;tr style="vertical-align: top"&gt;
&lt;td style="width: 100%; border: Black 1pt solid; font: 11pt/107% Calibri, Helvetica, Sans-Serif; padding-right: 5.4pt; padding-bottom: 8pt; padding-left: 5.4pt; text-align: center"&gt;&lt;span style="font-family: Times New Roman, Times, Serif; font-size: 12pt; line-height: 107%"&gt;Not FDIC Insured. Not Bank-Guaranteed. May Lose Value &lt;/span&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;

</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="TI20250331_C000130293Member"
      decimals="INF"
      id="h_63_1b626254_402d_4ae7_81ed_50a4f7f19c7c"
      unitRef="USD">130000000</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="TI20250331_C000130293Member"
      decimals="INF"
      id="h_64_71e8ae53_9e15_4c84_bad1_8b7c4f2abe2c"
      unitRef="Holding">106</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="FY2025_C000130293Member"
      decimals="INF"
      id="h_65_93e7ab2f_98e2_43ab_a075_b8ce0fce4e2e"
      unitRef="USD">278525</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="FY2025_C000130293Member"
      decimals="4"
      id="h_66_94cbdc06_9278_4b38_930c_bf1a156d6fe2"
      unitRef="pure">0.4153</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="FY2025_C000130293Member"
      id="t_18_806ad463_d980_e820_2450_5ea835cd6a7b">
&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; text-transform: uppercase; font-size: 9pt; margin-bottom: 3pt; font-weight: bold;"&gt;&lt;b&gt;Portfolio Holdings (as of &lt;/b&gt; &lt;b&gt;3/31/25&lt;/b&gt; &lt;b&gt;)&lt;/b&gt;&lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; font-weight: bold; margin-bottom: 0px; text-transform: none;"&gt;&lt;b&gt;Sector Allocation (Based on Net Assets)&lt;/b&gt;&lt;/div&gt;

&lt;div style="width: 540pt; margin-left: 18pt; margin-bottom: 12pt;"&gt;&lt;img alt="Graphical Representation - Top N Holdings Chart" src="chartimages_9853271.jpg" style="margin-left: 50pt; width: 437pt;"/&gt; &lt;/div&gt;

&lt;div style="margin-top: 0px; font-family: 'cambria'; color: #000000; letter-spacing: 0px; font-size: 9pt; font-weight: bold; margin-bottom: 0px; text-transform: none; page-break-after: avoid;"&gt;&lt;b&gt;State Allocation (Based on Net Assets)&lt;/b&gt;&lt;/div&gt;

&lt;div style="width: 540pt; margin-left: 18pt; margin-bottom: 6pt;"&gt;&lt;img alt="Graphical Representation - Allocation 1 Chart" src="chartimages_9853247.jpg" style="margin-left: 29pt; width: 437pt;"/&gt; &lt;/div&gt;
</oef:HoldingsTableTextBlock>
    <link:footnoteLink
      xlink:role="http://www.xbrl.org/2003/role/link"
      xlink:type="extended">
        <link:loc
          xlink:href="#h_03dcc754_d421_4ee2_b285_d2b6d15f46af"
          xlink:label="h_03dcc754_d421_4ee2_b285_d2b6d15f46af"
          xlink:type="locator"/>
        <link:footnote id="f_0001_000002" xlink:label="f_0001_000002" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.</link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_03dcc754_d421_4ee2_b285_d2b6d15f46af"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_1_032a065c_7deb_4cc1_8115_acc1b578c8e8"
          xlink:label="h_1_032a065c_7deb_4cc1_8115_acc1b578c8e8"
          xlink:type="locator"/>
        <link:footnote id="f_0001_000001" xlink:label="f_0001_000001" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund&#x2019;s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.</link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_1_032a065c_7deb_4cc1_8115_acc1b578c8e8"
          xlink:to="f_0001_000001"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_12_f7fc3aa9_511c_4d0e_8978_58eb4c99b53d"
          xlink:label="h_12_f7fc3aa9_511c_4d0e_8978_58eb4c99b53d"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_12_f7fc3aa9_511c_4d0e_8978_58eb4c99b53d"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_13_20d15089_9897_4ef1_affd_4a6c81fd565d"
          xlink:label="h_13_20d15089_9897_4ef1_affd_4a6c81fd565d"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_13_20d15089_9897_4ef1_affd_4a6c81fd565d"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_13d8e661_d5d3_4775_bdf0_82338656b95c"
          xlink:label="h_13d8e661_d5d3_4775_bdf0_82338656b95c"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_13d8e661_d5d3_4775_bdf0_82338656b95c"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_14_75dd4a3f_9772_498c_924a_d4eba7a8de54"
          xlink:label="h_14_75dd4a3f_9772_498c_924a_d4eba7a8de54"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_14_75dd4a3f_9772_498c_924a_d4eba7a8de54"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_2_84f7666d_65f3_4177_8da5_2eaf8fdb2bcf"
          xlink:label="h_2_84f7666d_65f3_4177_8da5_2eaf8fdb2bcf"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_2_84f7666d_65f3_4177_8da5_2eaf8fdb2bcf"
          xlink:to="f_0001_000001"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_22_21c70d0b_b349_467a_8984_6c3d328676a3"
          xlink:label="h_22_21c70d0b_b349_467a_8984_6c3d328676a3"
          xlink:type="locator"/>
        <link:footnote id="f_0003_000002" xlink:label="f_0003_000002" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund&#x2019;s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.</link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_22_21c70d0b_b349_467a_8984_6c3d328676a3"
          xlink:to="f_0003_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_23_aed3f35d_78b9_43e0_a4df_6eab639b9539"
          xlink:label="h_23_aed3f35d_78b9_43e0_a4df_6eab639b9539"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_23_aed3f35d_78b9_43e0_a4df_6eab639b9539"
          xlink:to="f_0003_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_27_1b6681f8_2398_484f_8133_898c72dfe3ea"
          xlink:label="h_27_1b6681f8_2398_484f_8133_898c72dfe3ea"
          xlink:type="locator"/>
        <link:footnote id="f_0003_000001" xlink:label="f_0003_000001" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.</link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_27_1b6681f8_2398_484f_8133_898c72dfe3ea"
          xlink:to="f_0003_000001"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_28_d67e04ba_cca4_43ab_91b7_c3b23dd7ff52"
          xlink:label="h_28_d67e04ba_cca4_43ab_91b7_c3b23dd7ff52"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_28_d67e04ba_cca4_43ab_91b7_c3b23dd7ff52"
          xlink:to="f_0003_000001"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_29_29a99de2_00a7_4ad0_b825_c67ce5143c6f"
          xlink:label="h_29_29a99de2_00a7_4ad0_b825_c67ce5143c6f"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_29_29a99de2_00a7_4ad0_b825_c67ce5143c6f"
          xlink:to="f_0003_000001"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_37_df22c241_b0eb_4035_b0e7_a655f851e2ee"
          xlink:label="h_37_df22c241_b0eb_4035_b0e7_a655f851e2ee"
          xlink:type="locator"/>
        <link:footnote id="f_0005_000001" xlink:label="f_0005_000001" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund&#x2019;s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.</link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_37_df22c241_b0eb_4035_b0e7_a655f851e2ee"
          xlink:to="f_0005_000001"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_38_f944e4a7_7235_4490_81e9_57868e986603"
          xlink:label="h_38_f944e4a7_7235_4490_81e9_57868e986603"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_38_f944e4a7_7235_4490_81e9_57868e986603"
          xlink:to="f_0005_000001"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_3f0c1af5_06e3_4ef2_b6a3_4a55261becaa"
          xlink:label="h_3f0c1af5_06e3_4ef2_b6a3_4a55261becaa"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_3f0c1af5_06e3_4ef2_b6a3_4a55261becaa"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_42_7a6ab600_8e27_4800_b70b_12b6399b41e7"
          xlink:label="h_42_7a6ab600_8e27_4800_b70b_12b6399b41e7"
          xlink:type="locator"/>
        <link:footnote id="f_0005_000002" xlink:label="f_0005_000002" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.</link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_42_7a6ab600_8e27_4800_b70b_12b6399b41e7"
          xlink:to="f_0005_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_43_b489135b_60c5_47f5_bbbb_2c2d63049b97"
          xlink:label="h_43_b489135b_60c5_47f5_bbbb_2c2d63049b97"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_43_b489135b_60c5_47f5_bbbb_2c2d63049b97"
          xlink:to="f_0005_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_44_db82b31c_f72e_4156_80eb_f0354da2f5dc"
          xlink:label="h_44_db82b31c_f72e_4156_80eb_f0354da2f5dc"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_44_db82b31c_f72e_4156_80eb_f0354da2f5dc"
          xlink:to="f_0005_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_4dac007e_ac65_4404_a533_d7da3668c812"
          xlink:label="h_4dac007e_ac65_4404_a533_d7da3668c812"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_4dac007e_ac65_4404_a533_d7da3668c812"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_52_2f5c9ada_850d_43d2_b9cd_327a7203345f"
          xlink:label="h_52_2f5c9ada_850d_43d2_b9cd_327a7203345f"
          xlink:type="locator"/>
        <link:footnote id="f_0007_000001" xlink:label="f_0007_000001" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">During the period, fees were waived and/or expenses reimbursed pursuant to an agreement with the Fund&#x2019;s investment adviser, BNY Mellon Investment Adviser, Inc. If this agreement is not extended in the future, expenses could be higher.</link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_52_2f5c9ada_850d_43d2_b9cd_327a7203345f"
          xlink:to="f_0007_000001"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_53_6228f971_e9bd_4140_8e37_4832f6d517c6"
          xlink:label="h_53_6228f971_e9bd_4140_8e37_4832f6d517c6"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_53_6228f971_e9bd_4140_8e37_4832f6d517c6"
          xlink:to="f_0007_000001"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_57_67345bf8_7944_4fb7_b726_0c837fb53f16"
          xlink:label="h_57_67345bf8_7944_4fb7_b726_0c837fb53f16"
          xlink:type="locator"/>
        <link:footnote id="f_0007_000002" xlink:label="f_0007_000002" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-US">In accordance with regulatory changes requiring the Fund&#x2019;s primary benchmark to represent the overall applicable market, the Fund&#x2019;s primary prospectus benchmark changed to the indicated benchmark effective as of March 31, 2025.</link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_57_67345bf8_7944_4fb7_b726_0c837fb53f16"
          xlink:to="f_0007_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_58_dd8a9d96_911b_419d_9c19_7957b712d7b8"
          xlink:label="h_58_dd8a9d96_911b_419d_9c19_7957b712d7b8"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_58_dd8a9d96_911b_419d_9c19_7957b712d7b8"
          xlink:to="f_0007_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_59_fe5f6553_afde_4f9d_b76d_b884c47e3a19"
          xlink:label="h_59_fe5f6553_afde_4f9d_b76d_b884c47e3a19"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_59_fe5f6553_afde_4f9d_b76d_b884c47e3a19"
          xlink:to="f_0007_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_5a833bd2_3495_4ca0_9625_cc206cd556c2"
          xlink:label="h_5a833bd2_3495_4ca0_9625_cc206cd556c2"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_5a833bd2_3495_4ca0_9625_cc206cd556c2"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_646cc5fb_d254_43f7_8a6f_5967c087b45c"
          xlink:label="h_646cc5fb_d254_43f7_8a6f_5967c087b45c"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_646cc5fb_d254_43f7_8a6f_5967c087b45c"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_7cf4d5e6_10a1_4ec1_a44a_0f7292a0f593"
          xlink:label="h_7cf4d5e6_10a1_4ec1_a44a_0f7292a0f593"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_7cf4d5e6_10a1_4ec1_a44a_0f7292a0f593"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_915f8298_7f50_4fef_959c_ff17e1f0afff"
          xlink:label="h_915f8298_7f50_4fef_959c_ff17e1f0afff"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_915f8298_7f50_4fef_959c_ff17e1f0afff"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_bf9e5c0d_bb0f_4f82_87b2_3731af675f2a"
          xlink:label="h_bf9e5c0d_bb0f_4f82_87b2_3731af675f2a"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_bf9e5c0d_bb0f_4f82_87b2_3731af675f2a"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_c0b469e6_e2a4_451f_83ab_8559b34ad30e"
          xlink:label="h_c0b469e6_e2a4_451f_83ab_8559b34ad30e"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_c0b469e6_e2a4_451f_83ab_8559b34ad30e"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#h_f127a5f8_d766_40b2_a3fe_1a4896a17a68"
          xlink:label="h_f127a5f8_d766_40b2_a3fe_1a4896a17a68"
          xlink:type="locator"/>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="h_f127a5f8_d766_40b2_a3fe_1a4896a17a68"
          xlink:to="f_0001_000002"
          xlink:type="arc"/>
    </link:footnoteLink>
</xbrl>
