<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:oef="http://xbrl.sec.gov/oef/2025"
  xmlns:tsr="http://tsr/20260430"
  xmlns:us-gaap="http://fasb.org/us-gaap/2025"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xhtml="http://www.w3.org/1999/xhtml"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="tsr-20260430.xsd" xlink:type="simple"/>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30_1121Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:SalesLoadAxis">oef:WithoutSalesLoadMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2625Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192625_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2637Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407222637_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2615Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192615_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2622Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192622_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_3971Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202409033971_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2618Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192618_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2619Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192619_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2620Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192620_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2617Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192617_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_3970Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202409033970_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2646Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407222646_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2021-05-01_2026-04-30_1121Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:SalesLoadAxis">oef:WithoutSalesLoadMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2021-05-01_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2016-05-01_2026-04-30_1121Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:SalesLoadAxis">oef:WithoutSalesLoadMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2016-05-01_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2016-04-30_2016-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-04-30</startDate>
            <endDate>2016-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-04-30</startDate>
            <endDate>2016-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-04-30</startDate>
            <endDate>2016-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2017-04-30_2017-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2017-04-30</startDate>
            <endDate>2017-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2017-04-30</startDate>
            <endDate>2017-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2017-04-30</startDate>
            <endDate>2017-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2018-04-30_2018-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2018-04-30</startDate>
            <endDate>2018-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2018-04-30</startDate>
            <endDate>2018-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2018-04-30</startDate>
            <endDate>2018-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2019-04-30_2019-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2019-04-30</startDate>
            <endDate>2019-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2019-04-30</startDate>
            <endDate>2019-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2019-04-30</startDate>
            <endDate>2019-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2020-04-30_2020-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-30</startDate>
            <endDate>2020-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-30</startDate>
            <endDate>2020-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-30</startDate>
            <endDate>2020-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2021-04-30_2021-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-04-30</startDate>
            <endDate>2021-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-04-30</startDate>
            <endDate>2021-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-04-30</startDate>
            <endDate>2021-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2022-04-30_2022-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2022-04-30</startDate>
            <endDate>2022-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2022-04-30</startDate>
            <endDate>2022-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2022-04-30</startDate>
            <endDate>2022-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2023-04-30_2023-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-04-30</startDate>
            <endDate>2023-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-04-30</startDate>
            <endDate>2023-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-04-30</startDate>
            <endDate>2023-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2024-04-30_2024-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-30</startDate>
            <endDate>2024-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-30</startDate>
            <endDate>2024-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-30</startDate>
            <endDate>2024-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-04-30_2025-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046459Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-04-30</startDate>
            <endDate>2025-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-04-30</startDate>
            <endDate>2025-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7400Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-04-30</startDate>
            <endDate>2025-04-30</endDate>
        </period>
    </context>
    <context id="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30_1121Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:SalesLoadAxis">oef:WithoutSalesLoadMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2625Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192625_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2637Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407222637_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2615Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192615_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2622Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192622_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_3971Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202409033971_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2618Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192618_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2619Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192619_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2620Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192620_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2617Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192617_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_3970Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202409033970_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2646Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407222646_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2021-05-01_2026-04-30_1121Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:SalesLoadAxis">oef:WithoutSalesLoadMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2021-05-01_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2016-05-01_2026-04-30_1121Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:SalesLoadAxis">oef:WithoutSalesLoadMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2016-05-01_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2016-04-30_2016-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-04-30</startDate>
            <endDate>2016-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-04-30</startDate>
            <endDate>2016-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-04-30</startDate>
            <endDate>2016-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2017-04-30_2017-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2017-04-30</startDate>
            <endDate>2017-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2017-04-30</startDate>
            <endDate>2017-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2017-04-30</startDate>
            <endDate>2017-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2018-04-30_2018-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2018-04-30</startDate>
            <endDate>2018-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2018-04-30</startDate>
            <endDate>2018-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2018-04-30</startDate>
            <endDate>2018-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2019-04-30_2019-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2019-04-30</startDate>
            <endDate>2019-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2019-04-30</startDate>
            <endDate>2019-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2019-04-30</startDate>
            <endDate>2019-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2020-04-30_2020-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-30</startDate>
            <endDate>2020-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-30</startDate>
            <endDate>2020-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-30</startDate>
            <endDate>2020-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2021-04-30_2021-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-04-30</startDate>
            <endDate>2021-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-04-30</startDate>
            <endDate>2021-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-04-30</startDate>
            <endDate>2021-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2022-04-30_2022-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2022-04-30</startDate>
            <endDate>2022-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2022-04-30</startDate>
            <endDate>2022-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2022-04-30</startDate>
            <endDate>2022-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2023-04-30_2023-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-04-30</startDate>
            <endDate>2023-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-04-30</startDate>
            <endDate>2023-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-04-30</startDate>
            <endDate>2023-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2024-04-30_2024-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-30</startDate>
            <endDate>2024-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-30</startDate>
            <endDate>2024-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-30</startDate>
            <endDate>2024-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-04-30_2025-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046461Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-04-30</startDate>
            <endDate>2025-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-04-30</startDate>
            <endDate>2025-04-30</endDate>
        </period>
    </context>
    <context id="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7401Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-04-30</startDate>
            <endDate>2025-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2625Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192625_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2637Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407222637_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2615Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192615_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2622Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192622_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_3971Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202409033971_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2618Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192618_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2619Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192619_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2620Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192620_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2617Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407192617_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_3970Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202409033970_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2646Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">tsr:bench202407222646_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-04-30</instant>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2021-05-01_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2016-05-01_2026-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-05-01</startDate>
            <endDate>2026-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2016-04-30_2016-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-04-30</startDate>
            <endDate>2016-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-04-30</startDate>
            <endDate>2016-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-04-30</startDate>
            <endDate>2016-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2017-04-30_2017-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2017-04-30</startDate>
            <endDate>2017-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2017-04-30</startDate>
            <endDate>2017-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2017-04-30</startDate>
            <endDate>2017-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2018-04-30_2018-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2018-04-30</startDate>
            <endDate>2018-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2018-04-30</startDate>
            <endDate>2018-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2018-04-30</startDate>
            <endDate>2018-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2019-04-30_2019-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2019-04-30</startDate>
            <endDate>2019-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2019-04-30</startDate>
            <endDate>2019-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2019-04-30</startDate>
            <endDate>2019-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2020-04-30_2020-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-30</startDate>
            <endDate>2020-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-30</startDate>
            <endDate>2020-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-04-30</startDate>
            <endDate>2020-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2021-04-30_2021-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-04-30</startDate>
            <endDate>2021-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-04-30</startDate>
            <endDate>2021-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-04-30</startDate>
            <endDate>2021-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2022-04-30_2022-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2022-04-30</startDate>
            <endDate>2022-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2022-04-30</startDate>
            <endDate>2022-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2022-04-30</startDate>
            <endDate>2022-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2023-04-30_2023-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-04-30</startDate>
            <endDate>2023-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-04-30</startDate>
            <endDate>2023-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2023-04-30</startDate>
            <endDate>2023-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2024-04-30_2024-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-30</startDate>
            <endDate>2024-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-30</startDate>
            <endDate>2024-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2024-04-30</startDate>
            <endDate>2024-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-04-30_2025-04-30Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">tsr:C000046462Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-04-30</startDate>
            <endDate>2025-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5079Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">tsr:bench202501165079_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-04-30</startDate>
            <endDate>2025-04-30</endDate>
        </period>
    </context>
    <context id="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5437Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000764624</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">tsr:benchmarkBMLM0236_7402Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-04-30</startDate>
            <endDate>2025-04-30</endDate>
        </period>
    </context>
    <unit id="USD">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="RATIO">
        <measure>pure</measure>
    </unit>
    <unit id="UNIT">
        <divide>
            <unitNumerator>
                <measure>iso4217:USD</measure>
            </unitNumerator>
            <unitDenominator>
                <measure>shares</measure>
            </unitDenominator>
        </divide>
    </unit>
    <dei:AmendmentFlag
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-9351">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-9352">0000764624</dei:EntityCentralIndexKey>
    <dei:EntityInvCompanyType
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-9353">N-1A</dei:EntityInvCompanyType>
    <dei:DocumentType
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-10658">N-CSR</dei:DocumentType>
    <dei:EntityRegistrantName
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-10659">Legg Mason Partners Income Trust</dei:EntityRegistrantName>
    <dei:DocumentPeriodEndDate
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-10660"
      xml:lang="en-US">2026-04-30</dei:DocumentPeriodEndDate>
    <oef:FundName
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-80"
      xml:lang="en-US">Western Asset Oregon Municipals Fund</oef:FundName>
    <oef:ClassName
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-86"
      xml:lang="en-US">Class A</oef:ClassName>
    <dei:TradingSymbol
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-89"
      xml:lang="en-US">SHORX</dei:TradingSymbol>
    <dei:DocumentPeriodEndDate
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-95"
      xml:lang="en-US">2026-04-30</dei:DocumentPeriodEndDate>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-104"
      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;This &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;annual shareholder report&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt; contains important information about &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;Western Asset Oregon Municipals Fund for the period &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;May 1, 2025, to &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;April 30, 2026.&lt;/span&gt;</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-106"
      xml:lang="en-US">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-113"
      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;You can find additional information about the Fund at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;https://www.franklintempleton.com/regulatory-fund-documents&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;. You can also &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;request this information by contacting us at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;877-6LM-FUND/656-3863&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;.&lt;/span&gt;</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-115"
      xml:lang="en-US">https://www.franklintempleton.com/regulatory-fund-documents</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-119"
      xml:lang="en-US">877-6LM-FUND/656-3863</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="foot-7400_802668-1011"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;WHAT WERE THE FUND COSTS FOR THE LAST YEAR? &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(based on a hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #E6FAFF;border-left:1.5pt solid #E6FAFF;  border-right:1.5pt solid #E6FAFF;  border-bottom:1.5pt solid #E6FAFF; margin-left:7.9pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:50%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:22.33812949640288%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:27.661870503597125%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Class Name&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Costs of a $10,000 &lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;investment&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Costs paid as a percentage of a &lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;$10,000 investment&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;sup&gt;*&lt;/sup&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;Class A&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$77&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;0.75%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10661"
      unitRef="USD">77</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="foot-7400_802668-1021"
      unitRef="RATIO">0.0075</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-181"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?&lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;For the twelve months ended April 30, 2026, &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Class A shares of Western Asset Oregon Municipals Fund returned &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;5.76%. The Fund &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;compares its performance to the&#160;&#x2009;Bloomberg Oregon Municipal Bond Index, which returned 6.70% for the same period.&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#161616;;"&gt;&lt;b&gt;PERFORMANCE HIGHLIGHTS&lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;padding-bottom:2pt;padding-top:0pt;margin-left:7.75pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:1.8507194244604317%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:98.14928057553956%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="2" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Top contributors to performance:&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#30DB87;;"&gt;&#x2191;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Rates positioning&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#30DB87;;"&gt;&#x2191;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Overweight education&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#30DB87;;"&gt;&#x2191;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Issue selection within hospital&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;padding-bottom:2pt;padding-top:0pt;margin-left:7.75pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:1.8507194244604317%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:98.14928057553956%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="2" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Top detractors from performance:&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#CA0046;;"&gt;&#x2193;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Overweight leasing&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#CA0046;;"&gt;&#x2193;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Issue selection within pre-refunded&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#CA0046;;"&gt;&#x2193;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Issue selection within transportation&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-290"
      xml:lang="en-US">The Fund&#x2019;s past performance is not necessarily an indication of how the Fund will perform in the future. </oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-293"
      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;The graph and table &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-313"
      xml:lang="en-US">&lt;div&gt;&lt;img alt="image" src="ts7400img004.jpg" style="width:88.88888888888889%"/&gt;&lt;/div&gt;</oef:LineGraphTableTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-317"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#161616;;"&gt;&lt;b&gt;AVERAGE ANNUAL TOTAL RETURNS (%) &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;Period Ended &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;April 30, 2026&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;margin-left:7.75pt;border-bottom:1.5pt solid #778B8B;margin-top:10px;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:47.530575539568346%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:17.489208633093526%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:17.140287769784173%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:17.83992805755396%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&#160;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;1 Year&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;5 Year&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;10 Year&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Class A&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;5.76&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;0.51&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;1.60&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Class A (with sales charge)&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;1.77&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;-0.36&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;1.16&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Bloomberg Municipal Bond Index&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;6.34&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;0.90&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;2.20&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Bloomberg Oregon Municipal Bond Index&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;6.70&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;0.62&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;2.04&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30_1121Member"
      id="ixv-353"
      xml:lang="en-US">Class A</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30_1121Member"
      decimals="INF"
      id="ixv-10663"
      unitRef="RATIO">0.0576</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2021-05-01_2026-04-30_1121Member"
      decimals="INF"
      id="ixv-10664"
      unitRef="RATIO">0.0051</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2016-05-01_2026-04-30_1121Member"
      decimals="INF"
      id="ixv-10665"
      unitRef="RATIO">0.0160</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-368"
      xml:lang="en-US">Class A (with sales charge)</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10666"
      unitRef="RATIO">0.0177</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2021-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10667"
      unitRef="RATIO">-0.0036</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2016-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10668"
      unitRef="RATIO">0.0116</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member"
      id="ixv-383"
      xml:lang="en-US">Bloomberg Municipal Bond Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10669"
      unitRef="RATIO">0.0634</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10670"
      unitRef="RATIO">0.0090</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10671"
      unitRef="RATIO">0.0220</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member"
      id="ixv-398"
      xml:lang="en-US">Bloomberg Oregon Municipal Bond Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10672"
      unitRef="RATIO">0.0670</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10673"
      unitRef="RATIO">0.0062</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10674"
      unitRef="RATIO">0.0204</oef:AvgAnnlRtrPct>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-417"
      xml:lang="en-US">&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;For current month-end performance, please call Franklin Templeton at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;877-6LM-FUND/656-3863 or visit&lt;/span&gt;&lt;br/&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;https://www.franklintempleton.com/investments/options/mutual-funds&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;. &lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Important data provider notices and terms available at www.franklintempletondatasources.com.&lt;/span&gt;&lt;/div&gt;</oef:UpdPerfInfoLocationTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-431"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;KEY FUND STATISTICS &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(as of &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;April 30, 2026)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #6B6B6B;margin-left:7.75pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:74.41007194244604%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:25.58992805755396%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Total Net Assets&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$39,659,455&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Total Number of Portfolio Holdings&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;49&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Total Management Fee Paid&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$17,920&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Portfolio Turnover Rate&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;5%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30Member"
      decimals="INF"
      id="ixv-10675"
      unitRef="USD">39659455</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30Member"
      decimals="INF"
      id="ixv-10676"
      unitRef="UNIT">49</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10677"
      unitRef="USD">17920</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10678"
      unitRef="RATIO">0.05</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="foot-7400_819495-1011"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;WHAT DID THE FUND INVEST IN? &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(as of &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;April 30, 2026)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;Portfolio Composition&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;sup&gt;*&lt;/sup&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;&#160;&#x2009;&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;(% of Total Investments)&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;img alt="image" src="ts7400img005.jpg" style="width:96.41294838145232%"/&gt;&lt;/div&gt;</oef:HoldingsTableTextBlock>
    <oef:UpdProspectusWebAddress
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      id="ixv-545"
      xml:lang="en-US">https://www.franklintempleton.com/regulatory-fund-documents</oef:UpdProspectusWebAddress>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2016-04-30_2016-04-30Member"
      decimals="INF"
      id="ixv-10679"
      unitRef="USD">9575</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2017-04-30_2017-04-30Member"
      decimals="INF"
      id="ixv-10680"
      unitRef="USD">9455</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2018-04-30_2018-04-30Member"
      decimals="INF"
      id="ixv-10681"
      unitRef="USD">9620</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2019-04-30_2019-04-30Member"
      decimals="INF"
      id="ixv-10682"
      unitRef="USD">10068</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2020-04-30_2020-04-30Member"
      decimals="INF"
      id="ixv-10683"
      unitRef="USD">10185</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2021-04-30_2021-04-30Member"
      decimals="INF"
      id="ixv-10684"
      unitRef="USD">10942</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2022-04-30_2022-04-30Member"
      decimals="INF"
      id="ixv-10685"
      unitRef="USD">10185</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2023-04-30_2023-04-30Member"
      decimals="INF"
      id="ixv-10686"
      unitRef="USD">10275</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2024-04-30_2024-04-30Member"
      decimals="INF"
      id="ixv-10687"
      unitRef="USD">10410</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-04-30_2025-04-30Member"
      decimals="INF"
      id="ixv-10688"
      unitRef="USD">10611</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_ClassA_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10689"
      unitRef="USD">11223</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5079Member"
      decimals="INF"
      id="ixv-10690"
      unitRef="USD">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5079Member"
      decimals="INF"
      id="ixv-10691"
      unitRef="USD">10014</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5079Member"
      decimals="INF"
      id="ixv-10692"
      unitRef="USD">10170</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5079Member"
      decimals="INF"
      id="ixv-10693"
      unitRef="USD">10797</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5079Member"
      decimals="INF"
      id="ixv-10694"
      unitRef="USD">11030</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5079Member"
      decimals="INF"
      id="ixv-10695"
      unitRef="USD">11884</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5079Member"
      decimals="INF"
      id="ixv-10696"
      unitRef="USD">10947</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5079Member"
      decimals="INF"
      id="ixv-10697"
      unitRef="USD">11262</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5079Member"
      decimals="INF"
      id="ixv-10698"
      unitRef="USD">11497</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5079Member"
      decimals="INF"
      id="ixv-10699"
      unitRef="USD">11688</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10700"
      unitRef="USD">12429</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5437Member"
      decimals="INF"
      id="ixv-10701"
      unitRef="USD">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5437Member"
      decimals="INF"
      id="ixv-10702"
      unitRef="USD">10022</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5437Member"
      decimals="INF"
      id="ixv-10703"
      unitRef="USD">10130</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5437Member"
      decimals="INF"
      id="ixv-10704"
      unitRef="USD">10748</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5437Member"
      decimals="INF"
      id="ixv-10705"
      unitRef="USD">11154</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5437Member"
      decimals="INF"
      id="ixv-10706"
      unitRef="USD">11859</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5437Member"
      decimals="INF"
      id="ixv-10707"
      unitRef="USD">10845</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5437Member"
      decimals="INF"
      id="ixv-10708"
      unitRef="USD">11164</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5437Member"
      decimals="INF"
      id="ixv-10709"
      unitRef="USD">11285</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5437Member"
      decimals="INF"
      id="ixv-10710"
      unitRef="USD">11465</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10711"
      unitRef="USD">12234</oef:AccmVal>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2625Member"
      decimals="INF"
      id="ixv-10712"
      unitRef="RATIO">0.356</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2637Member"
      decimals="INF"
      id="ixv-10713"
      unitRef="RATIO">0.144</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2615Member"
      decimals="INF"
      id="ixv-10714"
      unitRef="RATIO">0.082</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2622Member"
      decimals="INF"
      id="ixv-10715"
      unitRef="RATIO">0.077</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_3971Member"
      decimals="INF"
      id="ixv-10716"
      unitRef="RATIO">0.077</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2618Member"
      decimals="INF"
      id="ixv-10717"
      unitRef="RATIO">0.071</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2619Member"
      decimals="INF"
      id="ixv-10718"
      unitRef="RATIO">0.057</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2620Member"
      decimals="INF"
      id="ixv-10719"
      unitRef="RATIO">0.033</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2617Member"
      decimals="INF"
      id="ixv-10720"
      unitRef="RATIO">0.026</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_3970Member"
      decimals="INF"
      id="ixv-10721"
      unitRef="RATIO">0.026</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7400_instant_WesternAssetOregonMunicipalsFund_ClassA_2026-04-30_2646Member"
      decimals="INF"
      id="ixv-10722"
      unitRef="RATIO">0.051</oef:PctOfTotalInv>
    <oef:FundName
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-597"
      xml:lang="en-US">Western Asset Oregon Municipals Fund</oef:FundName>
    <oef:ClassName
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-603"
      xml:lang="en-US">Class C</oef:ClassName>
    <dei:TradingSymbol
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-606"
      xml:lang="en-US">SORLX</dei:TradingSymbol>
    <dei:DocumentPeriodEndDate
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-612"
      xml:lang="en-US">2026-04-30</dei:DocumentPeriodEndDate>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-621"
      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;This &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;annual shareholder report&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt; contains important information about &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;Western Asset Oregon Municipals Fund for the period &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;May 1, 2025, to &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;April 30, 2026.&lt;/span&gt;</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-623"
      xml:lang="en-US">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-630"
      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;You can find additional information about the Fund at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;https://www.franklintempleton.com/regulatory-fund-documents&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;. You can also &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;request this information by contacting us at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;877-6LM-FUND/656-3863&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;.&lt;/span&gt;</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-632"
      xml:lang="en-US">https://www.franklintempleton.com/regulatory-fund-documents</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-636"
      xml:lang="en-US">877-6LM-FUND/656-3863</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="foot-7401_802791-1011"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;WHAT WERE THE FUND COSTS FOR THE LAST YEAR? &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(based on a hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #E6FAFF;border-left:1.5pt solid #E6FAFF;  border-right:1.5pt solid #E6FAFF;  border-bottom:1.5pt solid #E6FAFF; margin-left:7.9pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:50%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:22.33812949640288%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:27.661870503597125%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Class Name&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Costs of a $10,000 &lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;investment&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Costs paid as a percentage of a &lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;$10,000 investment&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;sup&gt;*&lt;/sup&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;Class C&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$133&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;1.30%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10723"
      unitRef="USD">133</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="foot-7401_802791-1021"
      unitRef="RATIO">0.0130</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-698"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?&lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;For the twelve months ended April 30, 2026, &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Class C shares of Western Asset Oregon Municipals Fund returned &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;5.20%. The Fund &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;compares its performance to the&#160;&#x2009;Bloomberg Oregon Municipal Bond Index, which returned 6.70% for the same period.&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#161616;;"&gt;&lt;b&gt;PERFORMANCE HIGHLIGHTS&lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;padding-bottom:2pt;padding-top:0pt;margin-left:7.75pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:1.8507194244604317%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:98.14928057553956%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="2" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Top contributors to performance:&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#30DB87;;"&gt;&#x2191;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Rates positioning&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#30DB87;;"&gt;&#x2191;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Overweight education&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#30DB87;;"&gt;&#x2191;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Issue selection within hospital&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;padding-bottom:2pt;padding-top:0pt;margin-left:7.75pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:1.8507194244604317%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:98.14928057553956%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="2" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Top detractors from performance:&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#CA0046;;"&gt;&#x2193;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Overweight leasing&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#CA0046;;"&gt;&#x2193;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Issue selection within pre-refunded&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#CA0046;;"&gt;&#x2193;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Issue selection within transportation&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-807"
      xml:lang="en-US">The Fund&#x2019;s past performance is not necessarily an indication of how the Fund will perform in the future. </oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-810"
      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;The graph and table &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-826"
      xml:lang="en-US">&lt;div&gt;&lt;img alt="image" src="ts7401img004.jpg" style="width:88.88888888888889%"/&gt;&lt;/div&gt;</oef:LineGraphTableTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-830"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#161616;;"&gt;&lt;b&gt;AVERAGE ANNUAL TOTAL RETURNS (%) &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;Period Ended &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;April 30, 2026&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;margin-left:7.75pt;border-bottom:1.5pt solid #778B8B;margin-top:10px;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:47.530575539568346%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:17.489208633093526%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:17.140287769784173%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:17.83992805755396%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&#160;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;1 Year&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;5 Year&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;10 Year&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Class C&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;5.20&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;-0.05&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;1.04&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Class C (with sales charge)&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;4.20&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;-0.05&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;1.04&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Bloomberg Municipal Bond Index&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;6.34&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;0.90&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;2.20&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Bloomberg Oregon Municipal Bond Index&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;6.70&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;0.62&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;2.04&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30_1121Member"
      id="ixv-866"
      xml:lang="en-US">Class C</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30_1121Member"
      decimals="INF"
      id="ixv-10725"
      unitRef="RATIO">0.0520</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2021-05-01_2026-04-30_1121Member"
      decimals="INF"
      id="ixv-10726"
      unitRef="RATIO">-0.0005</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2016-05-01_2026-04-30_1121Member"
      decimals="INF"
      id="ixv-10727"
      unitRef="RATIO">0.0104</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-881"
      xml:lang="en-US">Class C (with sales charge)</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10728"
      unitRef="RATIO">0.0420</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2021-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10729"
      unitRef="RATIO">-0.0005</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2016-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10730"
      unitRef="RATIO">0.0104</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member"
      id="ixv-896"
      xml:lang="en-US">Bloomberg Municipal Bond Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10731"
      unitRef="RATIO">0.0634</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10732"
      unitRef="RATIO">0.0090</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10733"
      unitRef="RATIO">0.0220</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member"
      id="ixv-911"
      xml:lang="en-US">Bloomberg Oregon Municipal Bond Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10734"
      unitRef="RATIO">0.0670</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10735"
      unitRef="RATIO">0.0062</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10736"
      unitRef="RATIO">0.0204</oef:AvgAnnlRtrPct>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-927"
      xml:lang="en-US">&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;For current month-end performance, please call Franklin Templeton at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;877-6LM-FUND/656-3863 or visit&lt;/span&gt;&lt;br/&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;https://www.franklintempleton.com/investments/options/mutual-funds&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;. &lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Important data provider notices and terms available at www.franklintempletondatasources.com.&lt;/span&gt;&lt;/div&gt;</oef:UpdPerfInfoLocationTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-941"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;KEY FUND STATISTICS &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(as of &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;April 30, 2026)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #6B6B6B;margin-left:7.75pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:74.41007194244604%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:25.58992805755396%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Total Net Assets&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$39,659,455&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Total Number of Portfolio Holdings&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;49&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Total Management Fee Paid&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$17,920&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Portfolio Turnover Rate&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;5%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30Member"
      decimals="INF"
      id="ixv-10737"
      unitRef="USD">39659455</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30Member"
      decimals="INF"
      id="ixv-10738"
      unitRef="UNIT">49</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10739"
      unitRef="USD">17920</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10740"
      unitRef="RATIO">0.05</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="foot-7401_819519-1011"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;WHAT DID THE FUND INVEST IN? &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(as of &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;April 30, 2026)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;Portfolio Composition&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;sup&gt;*&lt;/sup&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;&#160;&#x2009;&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;(% of Total Investments)&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;img alt="image" src="ts7401img005.jpg" style="width:96.41294838145232%"/&gt;&lt;/div&gt;</oef:HoldingsTableTextBlock>
    <oef:UpdProspectusWebAddress
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      id="ixv-1054"
      xml:lang="en-US">https://www.franklintempleton.com/regulatory-fund-documents</oef:UpdProspectusWebAddress>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2016-04-30_2016-04-30Member"
      decimals="INF"
      id="ixv-10741"
      unitRef="USD">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2017-04-30_2017-04-30Member"
      decimals="INF"
      id="ixv-10742"
      unitRef="USD">9814</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2018-04-30_2018-04-30Member"
      decimals="INF"
      id="ixv-10743"
      unitRef="USD">9939</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2019-04-30_2019-04-30Member"
      decimals="INF"
      id="ixv-10744"
      unitRef="USD">10346</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2020-04-30_2020-04-30Member"
      decimals="INF"
      id="ixv-10745"
      unitRef="USD">10398</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2021-04-30_2021-04-30Member"
      decimals="INF"
      id="ixv-10746"
      unitRef="USD">11113</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2022-04-30_2022-04-30Member"
      decimals="INF"
      id="ixv-10747"
      unitRef="USD">10282</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2023-04-30_2023-04-30Member"
      decimals="INF"
      id="ixv-10748"
      unitRef="USD">10328</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2024-04-30_2024-04-30Member"
      decimals="INF"
      id="ixv-10749"
      unitRef="USD">10395</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-04-30_2025-04-30Member"
      decimals="INF"
      id="ixv-10750"
      unitRef="USD">10538</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_ClassC_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10751"
      unitRef="USD">11086</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5079Member"
      decimals="INF"
      id="ixv-10752"
      unitRef="USD">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5079Member"
      decimals="INF"
      id="ixv-10753"
      unitRef="USD">10014</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5079Member"
      decimals="INF"
      id="ixv-10754"
      unitRef="USD">10170</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5079Member"
      decimals="INF"
      id="ixv-10755"
      unitRef="USD">10797</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5079Member"
      decimals="INF"
      id="ixv-10756"
      unitRef="USD">11030</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5079Member"
      decimals="INF"
      id="ixv-10757"
      unitRef="USD">11884</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5079Member"
      decimals="INF"
      id="ixv-10758"
      unitRef="USD">10947</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5079Member"
      decimals="INF"
      id="ixv-10759"
      unitRef="USD">11262</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5079Member"
      decimals="INF"
      id="ixv-10760"
      unitRef="USD">11497</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5079Member"
      decimals="INF"
      id="ixv-10761"
      unitRef="USD">11688</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10762"
      unitRef="USD">12429</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5437Member"
      decimals="INF"
      id="ixv-10763"
      unitRef="USD">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5437Member"
      decimals="INF"
      id="ixv-10764"
      unitRef="USD">10022</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5437Member"
      decimals="INF"
      id="ixv-10765"
      unitRef="USD">10130</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5437Member"
      decimals="INF"
      id="ixv-10766"
      unitRef="USD">10748</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5437Member"
      decimals="INF"
      id="ixv-10767"
      unitRef="USD">11154</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5437Member"
      decimals="INF"
      id="ixv-10768"
      unitRef="USD">11859</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5437Member"
      decimals="INF"
      id="ixv-10769"
      unitRef="USD">10845</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5437Member"
      decimals="INF"
      id="ixv-10770"
      unitRef="USD">11164</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5437Member"
      decimals="INF"
      id="ixv-10771"
      unitRef="USD">11285</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5437Member"
      decimals="INF"
      id="ixv-10772"
      unitRef="USD">11465</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7401_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10773"
      unitRef="USD">12234</oef:AccmVal>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2625Member"
      decimals="INF"
      id="ixv-10774"
      unitRef="RATIO">0.356</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2637Member"
      decimals="INF"
      id="ixv-10775"
      unitRef="RATIO">0.144</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2615Member"
      decimals="INF"
      id="ixv-10776"
      unitRef="RATIO">0.082</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2622Member"
      decimals="INF"
      id="ixv-10777"
      unitRef="RATIO">0.077</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_3971Member"
      decimals="INF"
      id="ixv-10778"
      unitRef="RATIO">0.077</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2618Member"
      decimals="INF"
      id="ixv-10779"
      unitRef="RATIO">0.071</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2619Member"
      decimals="INF"
      id="ixv-10780"
      unitRef="RATIO">0.057</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2620Member"
      decimals="INF"
      id="ixv-10781"
      unitRef="RATIO">0.033</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2617Member"
      decimals="INF"
      id="ixv-10782"
      unitRef="RATIO">0.026</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_3970Member"
      decimals="INF"
      id="ixv-10783"
      unitRef="RATIO">0.026</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7401_instant_WesternAssetOregonMunicipalsFund_ClassC_2026-04-30_2646Member"
      decimals="INF"
      id="ixv-10784"
      unitRef="RATIO">0.051</oef:PctOfTotalInv>
    <oef:FundName
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1106"
      xml:lang="en-US">Western Asset Oregon Municipals Fund</oef:FundName>
    <oef:ClassName
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1112"
      xml:lang="en-US">Class I</oef:ClassName>
    <dei:TradingSymbol
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1115"
      xml:lang="en-US">LMOOX</dei:TradingSymbol>
    <dei:DocumentPeriodEndDate
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-1121"
      xml:lang="en-US">2026-04-30</dei:DocumentPeriodEndDate>
    <oef:AnnlOrSemiAnnlStatementTextBlock
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1130"
      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;This &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;annual shareholder report&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt; contains important information about &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;Western Asset Oregon Municipals Fund for the period &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;May 1, 2025, to &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;April 30, 2026.&lt;/span&gt;</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual
      contextRef="c_7400_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30Member"
      id="ixv-1132"
      xml:lang="en-US">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1139"
      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;You can find additional information about the Fund at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;https://www.franklintempleton.com/regulatory-fund-documents&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;. You can also &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;request this information by contacting us at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;877-6LM-FUND/656-3863&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#161616;;"&gt;.&lt;/span&gt;</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1141"
      xml:lang="en-US">https://www.franklintempleton.com/regulatory-fund-documents</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1145"
      xml:lang="en-US">877-6LM-FUND/656-3863</oef:AddlInfoPhoneNumber>
    <oef:ExpensesTextBlock
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="foot-7402_802913-1011"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;WHAT WERE THE FUND COSTS FOR THE LAST YEAR? &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(based on a hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #E6FAFF;border-left:1.5pt solid #E6FAFF;  border-right:1.5pt solid #E6FAFF;  border-bottom:1.5pt solid #E6FAFF; margin-left:7.9pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:50%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:22.33812949640288%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:27.661870503597125%;background-color:#E6FAFF;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Class Name&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Costs of a $10,000 &lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;investment&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;Costs paid as a percentage of a &lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;b&gt;$10,000 investment&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;&lt;sup&gt;*&lt;/sup&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;Class I&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$57&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="background-color:#E6FAFF;;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#E6FAFF;padding-left:2pt;padding-top:1.5pt;padding-bottom:0;align:center;text-align:center;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;0.55%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10785"
      unitRef="USD">57</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="foot-7402_802913-1021"
      unitRef="RATIO">0.0055</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1207"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE?&lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;For the twelve months ended April 30, 2026, &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Class I shares of Western Asset Oregon Municipals Fund returned &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;5.97%. The Fund &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;compares its performance to the&#160;&#x2009;Bloomberg Oregon Municipal Bond Index, which returned 6.70% for the same period.&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#161616;;"&gt;&lt;b&gt;PERFORMANCE HIGHLIGHTS&lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;padding-bottom:2pt;padding-top:0pt;margin-left:7.75pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:1.8507194244604317%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:98.14928057553956%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="2" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Top contributors to performance:&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#30DB87;;"&gt;&#x2191;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Rates positioning&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#30DB87;;"&gt;&#x2191;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Overweight education&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#30DB87;;"&gt;&#x2191;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Issue selection within hospital&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;padding-bottom:2pt;padding-top:0pt;margin-left:7.75pt;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:1.8507194244604317%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:98.14928057553956%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="2" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Top detractors from performance:&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#CA0046;;"&gt;&#x2193;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Overweight leasing&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#CA0046;;"&gt;&#x2193;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Issue selection within pre-refunded&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#CA0046;;"&gt;&#x2193;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Issue selection within transportation&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1316"
      xml:lang="en-US">The Fund&#x2019;s past performance is not necessarily an indication of how the Fund will perform in the future. </oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1319"
      xml:lang="en-US">&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;The graph and table &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:LineGraphTableTextBlock
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1335"
      xml:lang="en-US">&lt;div&gt;&lt;img alt="image" src="ts7402img004.jpg" style="width:88.88888888888889%"/&gt;&lt;/div&gt;</oef:LineGraphTableTextBlock>
    <oef:AvgAnnlRtrTableTextBlock
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1339"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#161616;;"&gt;&lt;b&gt;AVERAGE ANNUAL TOTAL RETURNS (%) &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;Period Ended &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;April 30, 2026&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;margin-left:7.75pt;border-bottom:1.5pt solid #778B8B;margin-top:10px;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:47.530575539568346%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:17.489208633093526%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:17.140287769784173%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:17.83992805755396%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:0pt;margin-bottom:0;"&gt;&#160;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;1 Year&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;5 Year&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:1.5pt solid #1447FF;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;10 Year&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Class I&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;5.97&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;0.69&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:0.5pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;1.76&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Bloomberg Municipal Bond Index&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;6.34&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;0.90&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #778B8B;white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;2.20&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Bloomberg Oregon Municipal Bond Index&lt;/b&gt;&lt;/span&gt;
               &lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;6.70&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;0.62&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;2.04&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:AvgAnnlRtrTableTextBlock>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1375"
      xml:lang="en-US">Class I</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10787"
      unitRef="RATIO">0.0597</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2021-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10788"
      unitRef="RATIO">0.0069</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2016-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10789"
      unitRef="RATIO">0.0176</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member"
      id="ixv-1390"
      xml:lang="en-US">Bloomberg Municipal Bond Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10790"
      unitRef="RATIO">0.0634</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10791"
      unitRef="RATIO">0.0090</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10792"
      unitRef="RATIO">0.0220</oef:AvgAnnlRtrPct>
    <oef:LineGraphAndTableMeasureName
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member"
      id="ixv-1405"
      xml:lang="en-US">Bloomberg Oregon Municipal Bond Index</oef:LineGraphAndTableMeasureName>
    <oef:AvgAnnlRtrPct
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10793"
      unitRef="RATIO">0.0670</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2021-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10794"
      unitRef="RATIO">0.0062</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2016-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10795"
      unitRef="RATIO">0.0204</oef:AvgAnnlRtrPct>
    <oef:UpdPerfInfoLocationTextBlock
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1421"
      xml:lang="en-US">&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;For current month-end performance, please call Franklin Templeton at &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;877-6LM-FUND/656-3863 or visit&lt;/span&gt;&lt;br/&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;;"&gt;https://www.franklintempleton.com/investments/options/mutual-funds&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;. &lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;Important data provider notices and terms available at www.franklintempletondatasources.com.&lt;/span&gt;&lt;/div&gt;</oef:UpdPerfInfoLocationTextBlock>
    <oef:AddlFundStatisticsTextBlock
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1435"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;KEY FUND STATISTICS &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(as of &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;April 30, 2026)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;
      &lt;table cellspacing="0" style="width:98%;cellspacing:0;border-top:1.5pt solid #6B6B6B;margin-left:7.75pt;border-bottom:1.5pt solid #6B6B6B;margin-top:10px;"&gt;
         &lt;tr style="height:1px;"&gt;
            &lt;td style="height:1px;width:74.41007194244604%;"&gt;&lt;/td&gt;
            &lt;td style="height:1px;width:25.58992805755396%;"&gt;&lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Total Net Assets&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$39,659,455&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Total Number of Portfolio Holdings&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;49&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Total Management Fee Paid&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="border-bottom:0.75pt solid #6B6B6B;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;$17,920&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
         &lt;tr&gt;
            &lt;td colspan="1" style="vertical-align:top"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:left;text-align:left;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;color:#2D2D2D;;"&gt;&lt;b&gt;Portfolio Turnover Rate&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
            &lt;td colspan="1" style="white-space:nowrap;vertical-align:bottom"&gt;
               &lt;div style="background-color:#FFFFFF;padding-left:2pt;padding-top:1pt;padding-bottom:0;align:right;text-align:right;padding-right:2pt;font-family:Arial, Helvetica, sans-serif;font-size:10pt;margin-top:1pt;margin-bottom:0;"&gt;&lt;span style="font-family:Arial, Helvetica, sans-serif;font-size:10.02pt;"&gt;5%&lt;/span&gt;&lt;/div&gt;
            &lt;/td&gt;
         &lt;/tr&gt;
      &lt;/table&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30Member"
      decimals="INF"
      id="ixv-10796"
      unitRef="USD">39659455</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30Member"
      decimals="INF"
      id="ixv-10797"
      unitRef="UNIT">49</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10798"
      unitRef="USD">17920</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10799"
      unitRef="RATIO">0.05</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="foot-7402_819523-1011"
      xml:lang="en-US">&lt;div&gt;&lt;span style="text-transform:uppercase;"&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;text-transform:uppercase;color:#1447FF;;"&gt;&lt;b&gt;WHAT DID THE FUND INVEST IN? &lt;/b&gt;&lt;/span&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;(as of &lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:10.824pt;color:#2D2D2D;;"&gt;April 30, 2026)&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;Portfolio Composition&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;sup&gt;*&lt;/sup&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;&#160;&#x2009;&lt;/b&gt;&lt;/span&gt;&lt;span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:12.024pt;color:#161616;;"&gt;&lt;b&gt;(% of Total Investments)&lt;/b&gt;&lt;/span&gt;&lt;/div&gt;&lt;div&gt;&lt;img alt="image" src="ts7402img005.jpg" style="width:96.41294838145232%"/&gt;&lt;/div&gt;</oef:HoldingsTableTextBlock>
    <oef:UpdProspectusWebAddress
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      id="ixv-1549"
      xml:lang="en-US">https://www.franklintempleton.com/regulatory-fund-documents</oef:UpdProspectusWebAddress>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2016-04-30_2016-04-30Member"
      decimals="INF"
      id="ixv-10800"
      unitRef="USD">1000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2017-04-30_2017-04-30Member"
      decimals="INF"
      id="ixv-10801"
      unitRef="USD">988542</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2018-04-30_2018-04-30Member"
      decimals="INF"
      id="ixv-10802"
      unitRef="USD">1008208</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2019-04-30_2019-04-30Member"
      decimals="INF"
      id="ixv-10803"
      unitRef="USD">1056788</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2020-04-30_2020-04-30Member"
      decimals="INF"
      id="ixv-10804"
      unitRef="USD">1070679</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2021-04-30_2021-04-30Member"
      decimals="INF"
      id="ixv-10805"
      unitRef="USD">1150844</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2022-04-30_2022-04-30Member"
      decimals="INF"
      id="ixv-10806"
      unitRef="USD">1072815</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2023-04-30_2023-04-30Member"
      decimals="INF"
      id="ixv-10807"
      unitRef="USD">1085305</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2024-04-30_2024-04-30Member"
      decimals="INF"
      id="ixv-10808"
      unitRef="USD">1100514</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-04-30_2025-04-30Member"
      decimals="INF"
      id="ixv-10809"
      unitRef="USD">1124107</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_ClassI_2025-05-01_2026-04-30Member"
      decimals="INF"
      id="ixv-10810"
      unitRef="USD">1191179</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5079Member"
      decimals="INF"
      id="ixv-10811"
      unitRef="USD">1000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5079Member"
      decimals="INF"
      id="ixv-10812"
      unitRef="USD">1001447</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5079Member"
      decimals="INF"
      id="ixv-10813"
      unitRef="USD">1017025</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5079Member"
      decimals="INF"
      id="ixv-10814"
      unitRef="USD">1079667</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5079Member"
      decimals="INF"
      id="ixv-10815"
      unitRef="USD">1103007</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5079Member"
      decimals="INF"
      id="ixv-10816"
      unitRef="USD">1188442</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5079Member"
      decimals="INF"
      id="ixv-10817"
      unitRef="USD">1094741</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5079Member"
      decimals="INF"
      id="ixv-10818"
      unitRef="USD">1126211</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5079Member"
      decimals="INF"
      id="ixv-10819"
      unitRef="USD">1149664</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5079Member"
      decimals="INF"
      id="ixv-10820"
      unitRef="USD">1168785</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5079Member"
      decimals="INF"
      id="ixv-10821"
      unitRef="USD">1242926</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2016-04-30_2016-04-30_5437Member"
      decimals="INF"
      id="ixv-10822"
      unitRef="USD">1000000</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2017-04-30_2017-04-30_5437Member"
      decimals="INF"
      id="ixv-10823"
      unitRef="USD">1002172</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2018-04-30_2018-04-30_5437Member"
      decimals="INF"
      id="ixv-10824"
      unitRef="USD">1012960</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2019-04-30_2019-04-30_5437Member"
      decimals="INF"
      id="ixv-10825"
      unitRef="USD">1074825</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2020-04-30_2020-04-30_5437Member"
      decimals="INF"
      id="ixv-10826"
      unitRef="USD">1115425</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2021-04-30_2021-04-30_5437Member"
      decimals="INF"
      id="ixv-10827"
      unitRef="USD">1185865</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2022-04-30_2022-04-30_5437Member"
      decimals="INF"
      id="ixv-10828"
      unitRef="USD">1084525</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2023-04-30_2023-04-30_5437Member"
      decimals="INF"
      id="ixv-10829"
      unitRef="USD">1116411</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2024-04-30_2024-04-30_5437Member"
      decimals="INF"
      id="ixv-10830"
      unitRef="USD">1128494</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-04-30_2025-04-30_5437Member"
      decimals="INF"
      id="ixv-10831"
      unitRef="USD">1146538</oef:AccmVal>
    <oef:AccmVal
      contextRef="c_7402_duration_WesternAssetOregonMunicipalsFund_2025-05-01_2026-04-30_5437Member"
      decimals="INF"
      id="ixv-10832"
      unitRef="USD">1223358</oef:AccmVal>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2625Member"
      decimals="INF"
      id="ixv-10833"
      unitRef="RATIO">0.356</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2637Member"
      decimals="INF"
      id="ixv-10834"
      unitRef="RATIO">0.144</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2615Member"
      decimals="INF"
      id="ixv-10835"
      unitRef="RATIO">0.082</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2622Member"
      decimals="INF"
      id="ixv-10836"
      unitRef="RATIO">0.077</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_3971Member"
      decimals="INF"
      id="ixv-10837"
      unitRef="RATIO">0.077</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2618Member"
      decimals="INF"
      id="ixv-10838"
      unitRef="RATIO">0.071</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2619Member"
      decimals="INF"
      id="ixv-10839"
      unitRef="RATIO">0.057</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2620Member"
      decimals="INF"
      id="ixv-10840"
      unitRef="RATIO">0.033</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2617Member"
      decimals="INF"
      id="ixv-10841"
      unitRef="RATIO">0.026</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_3970Member"
      decimals="INF"
      id="ixv-10842"
      unitRef="RATIO">0.026</oef:PctOfTotalInv>
    <oef:PctOfTotalInv
      contextRef="c_7402_instant_WesternAssetOregonMunicipalsFund_ClassI_2026-04-30_2646Member"
      decimals="INF"
      id="ixv-10843"
      unitRef="RATIO">0.051</oef:PctOfTotalInv>
    <link:footnoteLink
      xlink:role="http://www.xbrl.org/2003/role/link"
      xlink:type="extended">
        <link:loc
          xlink:href="#foot-7400_802668-1011"
          xlink:label="foot-7400_802668-1011"
          xlink:type="locator"/>
        <link:footnote id="WSF_7400_802668_1991" xlink:label="WSF_7400_802668_1991" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en"><xhtml:table style="padding-top:5pt;width:100%;cellspacing:0;margin-left:8pt;"><xhtml:tr><xhtml:td style="vertical-align:top;font-family:Arial, Helvetica, sans-serif;font-size:6pt;text-align:left;align:left;width:2%;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:8.02pt;color:#6B6B6B;;">*</xhtml:span></xhtml:td><xhtml:td style="padding-bottom:0pt;padding-top:-10.02pt;padding-left:2pt;padding-right:0pt;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:9.02pt;color:#6B6B6B;;">Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.</xhtml:span></xhtml:td></xhtml:tr></xhtml:table></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="foot-7400_802668-1011"
          xlink:to="WSF_7400_802668_1991"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#foot-7400_819495-1011"
          xlink:label="foot-7400_819495-1011"
          xlink:type="locator"/>
        <link:footnote id="WSF_7400_802690_490" xlink:label="WSF_7400_802690_490" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en"><xhtml:table style="padding-top:5pt;width:100%;cellspacing:0;margin-left:8pt;"><xhtml:tr><xhtml:td style="vertical-align:top;font-family:Arial, Helvetica, sans-serif;font-size:6pt;text-align:left;align:left;width:2%;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:8.02pt;color:#6B6B6B;;">*</xhtml:span></xhtml:td><xhtml:td style="padding-bottom:0pt;padding-top:-10.02pt;padding-left:2pt;padding-right:0pt;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:9.02pt;color:#6B6B6B;;">Does not include derivatives, except purchased options, if any.&#160;&#x2009;</xhtml:span></xhtml:td></xhtml:tr></xhtml:table></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="foot-7400_819495-1011"
          xlink:to="WSF_7400_802690_490"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#foot-7401_802791-1011"
          xlink:label="foot-7401_802791-1011"
          xlink:type="locator"/>
        <link:footnote id="WSF_7401_802791_1991" xlink:label="WSF_7401_802791_1991" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en"><xhtml:table style="padding-top:5pt;width:100%;cellspacing:0;margin-left:8pt;"><xhtml:tr><xhtml:td style="vertical-align:top;font-family:Arial, Helvetica, sans-serif;font-size:6pt;text-align:left;align:left;width:2%;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:8.02pt;color:#6B6B6B;;">*</xhtml:span></xhtml:td><xhtml:td style="padding-bottom:0pt;padding-top:-10.02pt;padding-left:2pt;padding-right:0pt;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:9.02pt;color:#6B6B6B;;">Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.</xhtml:span></xhtml:td></xhtml:tr></xhtml:table></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="foot-7401_802791-1011"
          xlink:to="WSF_7401_802791_1991"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#foot-7401_819519-1011"
          xlink:label="foot-7401_819519-1011"
          xlink:type="locator"/>
        <link:footnote id="WSF_7401_802812_490" xlink:label="WSF_7401_802812_490" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en"><xhtml:table style="padding-top:5pt;width:100%;cellspacing:0;margin-left:8pt;"><xhtml:tr><xhtml:td style="vertical-align:top;font-family:Arial, Helvetica, sans-serif;font-size:6pt;text-align:left;align:left;width:2%;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:8.02pt;color:#6B6B6B;;">*</xhtml:span></xhtml:td><xhtml:td style="padding-bottom:0pt;padding-top:-10.02pt;padding-left:2pt;padding-right:0pt;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:9.02pt;color:#6B6B6B;;">Does not include derivatives, except purchased options, if any.&#160;&#x2009;</xhtml:span></xhtml:td></xhtml:tr></xhtml:table></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="foot-7401_819519-1011"
          xlink:to="WSF_7401_802812_490"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#foot-7402_802913-1011"
          xlink:label="foot-7402_802913-1011"
          xlink:type="locator"/>
        <link:footnote id="WSF_7402_802913_1991" xlink:label="WSF_7402_802913_1991" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en"><xhtml:table style="padding-top:5pt;width:100%;cellspacing:0;margin-left:8pt;"><xhtml:tr><xhtml:td style="vertical-align:top;font-family:Arial, Helvetica, sans-serif;font-size:6pt;text-align:left;align:left;width:2%;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:8.02pt;color:#6B6B6B;;">*</xhtml:span></xhtml:td><xhtml:td style="padding-bottom:0pt;padding-top:-10.02pt;padding-left:2pt;padding-right:0pt;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:9.02pt;color:#6B6B6B;;">Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.</xhtml:span></xhtml:td></xhtml:tr></xhtml:table></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="foot-7402_802913-1011"
          xlink:to="WSF_7402_802913_1991"
          xlink:type="arc"/>
        <link:loc
          xlink:href="#foot-7402_819523-1011"
          xlink:label="foot-7402_819523-1011"
          xlink:type="locator"/>
        <link:footnote id="WSF_7402_802934_490" xlink:label="WSF_7402_802934_490" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en"><xhtml:table style="padding-top:5pt;width:100%;cellspacing:0;margin-left:8pt;"><xhtml:tr><xhtml:td style="vertical-align:top;font-family:Arial, Helvetica, sans-serif;font-size:6pt;text-align:left;align:left;width:2%;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:8.02pt;color:#6B6B6B;;">*</xhtml:span></xhtml:td><xhtml:td style="padding-bottom:0pt;padding-top:-10.02pt;padding-left:2pt;padding-right:0pt;"><xhtml:span style="clear:both;font-family:Arial, Helvetica, sans-serif;font-size:9.02pt;color:#6B6B6B;;">Does not include derivatives, except purchased options, if any.&#160;&#x2009;</xhtml:span></xhtml:td></xhtml:tr></xhtml:table></link:footnote>
        <link:footnoteArc
          xlink:arcrole="http://www.xbrl.org/2003/arcrole/fact-footnote"
          xlink:from="foot-7402_819523-1011"
          xlink:to="WSF_7402_802934_490"
          xlink:type="arc"/>
    </link:footnoteLink>
</xbrl>
